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Search - "centos"
The programmer and the interns part 2.
We will discuss numerous events that happened over the past week or so.
We had our weekly engineering meeting. The interns were invited as well.
We hold meetings in the generic, big, corporate meeting rooms with a huge table in the middle.
There were more than enough chairs for everyone yet the most motivated and awkward intern (let's call him Simon) chose to stand, cause "it's cool man, I always stand". At this point we all know that he probably read about Agile stand up meetings and is confusing it with this one. Otherwise he's simply trying to stand out from the rest. (See what I did there?)
Anyway the meeting has started way later than planned (what a surprise) and took much longer than Simon expected. Everybody is sitting and listening to the CTO while occasionally glancing at the weird looking intern standing awkwardly and refusing to sit because it would make his original intentions pointless. He even tried to nod whith a serious face and his hands crossed when the CTO said something and looked at his general direction. The meeting was about a hour and a half long but with the delay it was at least 2.5 hours.
At the end Simon was so exhausted that he fell asleep on the office puff, was forgotten and locked inside. 3 hours later when I was home I received a call from him with his sleepy-trying-to-sound-awake voice telling the news. Lucky there's a 24/7 Noc team that could rescue him.
An intern who was late on his Linux test connected to every test VM (should I remind you that each one has a personal VM but they share passwords for their roots?) and tried to reset it with "sleep 10s; shutdown -h now".
He took down all 13 of those so I had to turn them on and switch passwords again.
One of the interns didn't do any of his training chores. Apparently he forgot what he was told to use, ignored all online documentation and used Windows CMD with Linux commands for almost a week already.
Simon uses Vim to write all text possible. Even mails, he then selects all and copies into the mail body. He spent half a day on a homework task I gave them. He wrote everything inside one text file using Vim. When he was done he saved the file and quit the editor. He then said "Oh shit! I've forgot to sign my name!". I explicitly told him that theres absolutely no need for that because I see which mail the file was sent from. He said "I don't even need a program for that!" and gave a couple of strokes on the keyboard.
Later I received an email from him with a .txt attachment. When I opened it the only text that was inside was "by Simon ;)".
I logged to his machine and checked the last command ran on the file:
echo "by Simon ;)" > linuxtasks.txt
The girl here uses a MacBook. She keeps getting confused with the terminal windows and rebooting her own machine instead of the remote VM.
Haven't checked yet how this happened but one of the interns deleted the gui from his local Centos.35
So I got the job. Here's a story, never let anyone stop you from accomplishing your dreams!
It all started in 2010. Windows just crashed unrecoverably for the 3rd time in two years. Back then I wasn't good with computers yet so we got our tech guy to look at it and he said: "either pay for a windows license again (we nearly spend 1K on licenses already) or try another operating system which is free: Ubuntu. If you don't like it anyways, we can always switch back to Windows!"
Oh well, fair enough, not much to lose, right! So we went with Ubuntu. Within about 2 hours I could find everything. From the software installer to OpenOffice, browsers, email things and so on. Also I already got the basics of the Linux terminal (bash in this case) like ls, cd, mkdir and a few more.
My parents found it very easy to work with as well so we decided to stick with it.
I already started to experiment with some html/css code because the thought of being able to write my own websites was awesome! Within about a week or so I figured out a simple html site.
Then I started to experiment more and more.
After about a year of trial and error (repeat about 1000+ times) I finally got my first Apache server setup on a VirtualBox running Ubuntu server. Damn, it felt awesome to see my own shit working!
From that moment on I continued to try everything I could with Linux because I found the principle that I basically could do everything I wanted (possible with software solutions) without any limitations (like with Windows/Mac) very fucking awesome. I owned the fucking system.
Then, after some years, I got my first shared hosting plan! It was awesome to see my own (with subdomain) website online, functioning very well!
I started to learn stuff like FTP, SSH and so on.
Went on with trial and error for a while and then the thought occured to me: what if I'd have a little server ONLINE which I could use myself to experiment around?
First rented VPS was there! Couldn't get enough of it and kept experimenting with server thingies, linux in general aaand so on.
Started learning about rsa key based login, firewalls (iptables), brute force prevention (fail2ban), vhosts (apache2 still), SSL (damn this was an interesting one, how the fuck do you do this yourself?!), PHP and many other things.
Then, after a while, the thought came to mind: what if I'd have a dedicated server!?!?!?!
I ordered my first fucking dedicated server. Damn, this was awesome! Already knew some stuff about defending myself from brute force bots and so on so it went pretty well.
Finally made the jump to NginX and CentOS!
Made multiple VPS's for shitloads of purposes and just to learn. Started working with reverse proxies (nginx), proxy servers, SSL for everything (because fuck basic http WITHOUT SSL), vhosts and so on.
Started with simple, one screen linux setup with ubuntu 10.04.
Running a five monitor setup now with many distro's, running about 20 servers with proxies/nginx/apache2/multiple db engines, as much security as I can integrate and this fucking passion just got me my first Linux job!
It's not just an operating system for me, it's a way of life. And with that I don't just mean the operating system, but also the idea behind it :).20
Before anyone starts going batshit crazy, this is NOT a windows hate post. Just a funny experience imo.
So I was tasked with installing ProxMox on a dedicated server at my last internship. The windows admin was my guider (he could also do debian). (he was a really nice/chill guy)
So we were discussing what VM's we wanted and the boss (really cool dude by the way) said he wanted a VPS for storing some company stuff as well. Fair enough, what would we use? I suggested debian and centos. Then we started discussing what we'd do if the systems would fuck up etc (at installation or whatever).
So I didn't wanna look like a Linux Nazi so I suggested windows. Then the happy/positive guider/windows admin suddenly became dead serious (I was actually like 'woah' for a second) and said this:
No. We're not going to fucking use windows for this. For general servers etc sometimes, fair enough but we're talking about sensitive company data here. I don't want that data to be stored on a proprietary/closed source system, hell what if there's some kinda fucking backdoor build in, who can fucking verify that? We're using Linux, end of discussion.
I was pretty flabbergasted as he's a nice guy and actually really likes windows!
Linux it became.5
CIO: what kind of web server do you want for your dev environment? WordPress?
Me: Uhm, Linux centos running apa-
CIO: whoa that's dangerous you need to think of the people who are going to support this.
CIO: we're going to pick something and stick with it.
FML company is just starting to do in house dev. CIO is heavily involved and knows more than I do... My life is a Dilbert comic strip11
Spend half the day setting up a dedicated server at work (including getting all the hardware together) and installing CentOS and tweaking around.
For a client? Oh no, there just literally wasn't anything else to do and I didn't want to sit around doing nothing or working on shell scripts AGAIN. (working in support (+ linux server management) and due to the holidays hardly any support requests come in)
*Hmmm, lets install nginx for fun*
"yum install ngi..."
*wait, let's compile from source and make it more fun!*
So yeah, that was my day, I guess.5
one day my dad brings home an old blade server from work and a centos distro. we set it up in the garage of our hot Florida house and he gave me his old perl programming books and showed me a few things. I was 12 or 13. that summer I moved my bed to the garage and barely slept as I learned everything I could. I've never looked back.2
Proxmox, i love you but kindly to fuck yourself.
It shouldn't be such a pain to get you up and running.
Let's go for CentOS or Ubuntu server, then.
I met some guys who were Computer Engineering students who were studying web platform as a hobby aside from IoT lessons at school, they met me at my school's library coding stuff and I noticed one of them messing around with yum
"Is that Fedora?" I said, because I wasn't familiar what are the package managers of every distro.
"No, it's CentOS" the guy replied, he also noticed I was coding in a cloud IDE, so he was amazed. He asked if he can use C# there, can he share his workspace, etc.He also asked what's my course. I replied " i'm jsut a senior high student". And they were out of words.
after that, I always think that my skills are way ahead of my age. I don't know my brain anymore, but I felt badass3
To any fellow Linux sysadmin out there, is it true that 32 bits systems can handle a max of 16gb ram?
Running a 32 bits CentOS live disc in my dedi which shows 16gb ram available while the BIOS shows 32gb installed...
Got to a client, we are taking over their software dev and IT.
"you're not touching my code ". Listen fuck twit, a robocopy script is not fucking code.
"I wrote a 3500 line code for this company" no fuck twit, you wrote a whole lot of fucking gibberish that looks like someone shat out BASH and it met html along the way. It doesn't compile, it doesn't run, it's a fucking dormant file. You charged people for shit all.
Setting up exchange is also not a big whoop.
Moving them over to CentOS server (he had them on XP still), and writing enough code to qualm my frustration at people.4
Fucking cloud providers always trying to steal your shit and spy on your things, fucking prying eyes. That's why i've decided to go back hosting my own private cloud from home. Running on some very energy efficient shit: dual core intel atom cpu (so slow that it can't fucking run windows normally), 16gb of ram, because why the fuck not? and 1tb 2.5"hdd, along with unlimited data - 100/100 Mbit/s internet connection with a server response time less than 95ms just to backup my shitty Iphone selfies and cat pics, host some very important files and regularly back up my contacts. This shit runs CentOS, Nginx, https, bitch! This platform is more trustworthy than your shitty dropbox or whatever other shit they offer you. I can choose whether i back-up my shit from local network or over internetz, Costing me no more than 25€ annually(just to keep the machine on 24/7/365).14
Time to move my mailserver!
I am having an inner struggle about what distro/OS to use:
What should I use? Why?43
My first job was actually nontechnical - I was 18 years old and sold premium office furniture for a small store in Munich.
I did code in my free time though (PHP/JS mostly, had a litte browsergame back then - those were the days), so when my boss approached me and asked me whether I liked to take over a coding project, I agreed to the idea.
Little did I know at the time: I was supposed to work with a web agency the boss had contracted to build their online shop. Only that he had no plan or anything, he basically told them "build me an online shop like abc(a major competitor of ours at the time)"
He employed another sales lady who was supposed to manage the shop (that didn't exist yet). In the end, I think 80% of her job was to keep me from killing my boss.
As you can imagine, with this huuuuge amout of planning and these exact visions of what was supposed to be, things went south fast and far. So far that I could visit my fellow flightless birds down in the Penguin's republic of Antarctica and still need to go further.
Well... When my boss started suing the web agency, I was... ahem, asked to take over. Dumb as I was, I did - I was a PHP kid and thought that Magento, being written in PHP, would be easy to master. If you know Magento, you know that was maybe the wrongest thing I ever said.
Fast forward 3 very exhausting months, the thing was online. Not all of it worked yet, but it was online and fairly secure.
I did next to everything myself, administrating the CentOS box the shop was running on, its (own) e-mail server, the web server, all the coding required for the shop (can you spell 12 hour day for 8 hour pay?)
3 further months later, my life basically was a wreck, I dragged myself to work, the only thing I looked forward being the motorcycle ride home. The system worked though.
Mind you, I was still, at the time, working with three major customers, doing deskside support and some admin (Win Server 2008R2 at the time) - because, to quote my boss, "We could not afford a full time developer and we don't need one".
I think i stopped coding in my free time, the one hobby I used to love more than anything on the world, somewhere Decemerish 2012. I dropped out of the open source projects I was in, quit working on my browser game and let everything slide.
I didn't even care to renew the domains and servers for it, I just let it die without notice.
The little free time I had, I spent playing video games and getting drunk/high.
December 2013, 1.5 years on the job, I reached my breaking point and just left, called in sick at least a week per month because I just could not see this fucking place anymore.
I looked for another job outside of ALL of what I did before. No more Magento, no more sales, no more PHP. I didn't have to look for long, despite what I thought of my skills.
In February 2014, I told my boss that I quit. It was still seven months until my new job started, but I wanted him to know early so we could migrate and find a replacement.
The search for said replacement started in June 2014. I had considerably less work in the months before, looks like he got the hint.
In August 2014, my replacement arrived and I got him started.
I found a job, which I am still in, and still happy about after almost half a decade, at a local, medium sized ISP as a software dev and IT security guy. Got a proper training with a certificate and everything now.
My replacement lasted two months, he was external and never really did his job - the site, which until I had quit, had a total of 3 days downtime for 3 YEARS (they were the hoster's fault, not mine), was down for an entire month and he could not even tell why.
HIS followup was kicked after taking two weeks to familiarize himself with the project. Well, I think that two weeks is not even barely enough to familiarize yourself with nearly three years of work, but my boss gave him two days.
In 2016, the shop was replaced with another one. Different shop system, different OS, different CI. I don't know why and I can't say I give a damn.
Almost all the people that worked at the company back with me have left for greener pastures, taking their customers (and revenue) with them.
As for my boss' comments, instructions and lines: THAT might not be safe for work. Or kids. Or humans in general. And there wouldn't be much left if you put it through a language filter...
Moral of the story: No, it's not a bad thing to leave a place if you're mistreated there. Don't mistake loyalty with stupidity!
And, to quote one of my favourite Bands: "Nothing matters when the pain is all but gone" (Tragedy + Time by Rise Against).8
Meet my new toy, Centos7 as of this afternoon (once I get the usb burned and installation done)
She's not much to look at, but she's mine.10
It is once again that time of year when we say farewell to our current interns and say hello to a brand new batch.
The two groups overlap for a few days. During this time the old interns show the new interns the ropes, while the mentors silently weep in the lunchroom having realized that nothing that they've said over the last 12 months has had any effect whatsoever.
Some choice quotes:
New Intern: It says 'uncaught exception'.
Old Intern: Oh don't worry that will fix itself on production.
OI: Did you pull the code?
NI: Yeah, but I have all these weird brackets everywhere... [merge conflict]
OI: Oh yeah that happens sometimes, just delete them.
NI: It says "push to master rejected". [we enforce code reviews]
OI: Ohh that means the server is broken. You should tell someone, they have to reboot it.
NI: Where did that file save to? [we use ONLY macOS and Linux]
OI: C:\Users\<your name>\My Documents\...
OI: You can use either pgAdmin or MySQL Workbench. I like Workbench better but I couldn't get it to work, it kept giving me errors.
And of course...
OI: No, we don't use Linux. We use CentOS.
I did the math today. Only 35 more years and I can retire.5
Should’ve posted this after it happened, but it requires a bit of background anyway.
There’s this guy that oversees our OpenStack environment. My team often make jokes and groan about him in private because he’s so overbearing. A few months back, he had to take us to our data center to show us our new racks, and he kept saying stupid stuff like “you break this and it costs me $30,000” as if he owns everything. He’s just... one of THOSE people. Always speaks in such a condescending way. We make jokes that he is our “best friend”.
Our company is shifting most of our products to the cloud in response to the coronavirus (trying to make it an opportunity for “innovation”). This has involved some structural and responsibility changes in our department, and long story short, I’m now heading the OpenStack environment alongside other projects.
This means going through grueling 1-on-1 meetings with our “best friend”. It’s not too bad, I can be pretty patient with people, so I didn’t mind too much at first. Then a few things happened.
1. He sent a shared folder that he owned containing info related to the environments. Several documents were outdated and incomplete, so I downloaded them, corrected them, and then uploaded the documents to my teams file share, as I was supposed to since we now own the projects.
2. Several files were missing, and when I asked about them, he said “Oh, did you refresh the browser?”. I told him no, that I downloaded them locally and republished them to my teams server, because he was supposed to hand everything off to us at once. He says “Well, silly, how are you going to get updates if you’re looking at them locally?” and kind of chuckles at me like I’m stupid.
3. He insists on training me how to remote into one of the servers to check on cluster space, which in itself is fine. I understand others wanting to make sure things will be done right by the people who come after them. But he tells me to download SuperPutty. I tell him, “oh no, that’s alright. I don’t need putty”. He says “oh cool, what tool do you use for ssh?”. I answer him “Just Git. If I want to I can use a CentOs bash terminal too, because we have WSL installed”. He responds “You can’t ssh through Git”.
I was actually a little shocked. I didn’t know if he was serious or not so I was silent for a few seconds before hesitantly saying “yes you can”. He says “this is news to me” and I so I tell him “every single one of our build jobs fetches code from Git with ssh” and he seemed genuinely shocked and surprised by that.... so then it occurs to me to show him that you can ssh in Powershell and that REALLY blew his mind. He would not shut up about it for several minutes. I was amused until it just got annoying.
Needless to say, my team had been previously teasing me about having to work with him, so they found it hilarious when I told them afterwards.8
Having one of those days where the code works on the development VM but not on the production box.... FML
Like, seriously, bruh. Some junior have managed to run Notepad++ that consumed a lot of RAM... on our development server... on CentOS... using Wine.15
You know the worst thing about being a freelancer? You're expected to wear every fucking hat and you don't get normal hours.
Over the past few days I have been working with a client of a client attampting to fix his server. He's running CentOS on VMWare and somehow ended up breaking the system.
Upon inspection there was no way to fix his system remotely. It wouldn't even boot in recovery mode. So we've been attempting to recover his data so that we can reinstall CentOS and not have to start completely from scratch.
So for the past 3 days straight I have been remotely logging in to a Debian Live CD and manually sending folders to a FTP server of his. He has somewhere close to 30 sites on this server, and upwards of 1 million files in total.
Yesterday either the system freaked out or he did something, but the entire fucking system stopped responding which forced me to reboot it, reinsert the live CD, reinstall evertything, and re-mount his broken systems drives.
Here we are 3 days in, we're still not done, and I'm getting slightly pissy because if you don't know Linux well enough to fix this shit yourself, you shouldn't be acting as your own sysadmin for 30+ sites.
Also, backups are a thing right? VMWare also has snapshots. I know the extra storage isn't cheap, but it's a hell of a lot cheaper than paying soemone like me $35/hr to go and fix all of your shitty mistakes.2
Got pulled out of bed at 6 am again this morning, our VMs were acting up again. Not booting, running extremely slow, high disk usage, etc.
This was the 6 time in as many weeks this happened. And always the marching orders were the same. Find the bug, smash the bug, get it working with the least effort. I've dumped hundreds of hours maintaining this broken shitheap of a system, putting off other duties to keep mission critical stations running.
The culprits? Scummy consultants, Windows 10 1709, and Citrix Studio.
Xen Server performed well enough, likely due to its open source origins and Centos architecture.
Whelp. DasSeahawks was good and pissed. Nothing like getting rousted out of bed after a few scant hours rest for patching the same broken system.
DasSeahawks lost his temper. Things went flying. Exorcists were dispatched and promptly eaten.
Enough. No consultants, no analysts, and no experts touched it. No phone calls, no manuals, not even a google search. Just a very pissed admin and his minion declaring blitzkrieg.
We made our game plan, moved the users out, smoked our cigs, chugged monster, and queued a gnu-metal playlist on spotify.
Then we took a wrecking ball to the whole setup. User docs were saved, all else was rm -r * && shred && summon -u Poseidon -beast Land_Cracken.
Started at 3pm and finished just after midnight. Rebuilt all the vms with RDP, murdered citrix studio (and their bullshit licenses), completely blocked Windows 10 updates after 1607, and load balanced the network.
So what do we get when all the experts are fired? Stabbed lightning. VMs boot in less than 10 seconds, apps open instantly, and server resources are half their previous usage state. My VMs are now the fastest stations in our complex, as they should be.
Next to do: install our mxgpu, script up snapshots and heartbeat, destroy Windows ads/telemetry, and setup PDQ. damn its good to be good!
What i learned --> never allow testing to go to production, consultants will fuck up your shit for a buck, and vendors are half as reliable over consultants. Windows works great without Microsoft, thin clients are overpriced, and getting pissed gets things done.
This my friends, is why admins are assholes.4
Damnit! I dropped a 16GB USB Drive on an open floor, and the thing has just vanished. It has my install files for CentOS 7 on it. It's like a mouse or something came out and snatched it and, poof, gone. Dobby, damnit, what did you do with my USB Drive?4
IBM is taking a shit in our mouths. I suppose we should have seen this coming, but almost our entire environment runs on CentOS. Not only will we have to find a new distro (which will probably be CoreOS with kube, bleh) but we'll have to get everyday trained up on it.11
IBM decided to change the EOL of CentOS 8 from 2029 to 2021, then continue CentOS as useless RR testbed. What a nice attempt at forcing users into the paid RedHat version.
That's a risky move because Rocky Linux is already gearing up to replace CentOS, and the whole RedHat ecosystem could bleed out to Ubuntu, Suse, and Debian LTS. Well done, suits.16
Progress. The backend is deployed and works on my server. Tomorrow, deploying my fronted code to work with the backend.4
Has anyone installed Elasticsearch on Linux - centos to be specific.
Trying to workout why the fucker won't install. Setting up a proof of concept so don't want to use it currently as SaaS.
From why I can tell, it only needs Java, (check) and to be ran as a user other then root (check) but running ./bin/Elasticsearch hangs after a while and starts powering up 100 odd threads with no progress.6
Medium long story about POP!_OS
TL;DR : A true K.I.S.S. OS. Very well designed UI. In general suitable for everyone. Any distro-hoppers MUST try out. If your current OS is already heavily customized to your needs, DON'T bother with POP. (Read till the end if you are on toilet, nothing to lose)
Backstory : I am never a fanboy of anything although I am loyal to the tools I use daily. So OS is also something I picked and use to meet my needs except when I was a student. My first linux experience was about a decade ago with ubuntu. Have tried almost all kinds of light-weight and minimal distros after that (lubuntu, arch, mint, puppylinux, fedora, centos and others I forgot) during my student years.
I like all things minimal. ("Keep It Simple Stupid" is my email signature.) When I started working, Windows became the sole OS I use since it met my needs better than others. Except that one time when I tried Elementary. Although I found it a good OS, it didn't get installed as a dual-boot. I don't find Elementary minimal. It is one of well designed OSs but I still think it can be improved. (Plus I had this weird feeling that it is similar to Mac OS)
At the start of this year, Widows alone was not enough for my needs. Decided to look for a minimal linux distro. My old i7 ASUS has 8GB RAM and roughly 250GB free storage. So I am not that worried about hardware requirements. My main struggle is downloading stuffs. (Few of you guys must know by now the speed of my internet LOL.) Well, even if I had a good speed, I will still look for minimal distro as first priority. So I went with minimal ubuntu image and xubuntu environment. Although I do not like the UI design, it is acceptable. Through out the years, I have configured it to suit my needs and currently pretty happy with it.
Thoughts on POP!_OS : To me, it is literally like meeting a young girl who is perfect for my life. She has the perfect body, beautiful face, amazing appearance and good manners. And she is young, of course there is a lack of experience issue. But it can be taught and she has a very high chance to become a wonderful lady if she continues like this. Only crap is I already have someone and in a committed relationship. So I could not go any further than introduction. I do save her contact and will keep in touch with her online. You know? Things change. Things always change somehow.2
Finally, I can play around with a proper server.
HP ProLiant DL380 G6 = dual 8-core Xenons @ 2.4GHz with 32GB RAM and 12TB / RAID1-0 of WD Purples (we happened to have them for some reason).
Already pissed at HP because they don't support JBOD and already pissed at myself for using CentOS, but other than that, enjoying the hell out of it!
And it's ALL MINE! ... Well, technically it's the org's, but it won't go into production for half a year and I'm the only one with the root access so, for now, it's MINE! 😅14
I salute all server admins here. I might never understand how you guys get through with all those terminals and debugging and greb and runlevel and all these weird things.
I spent two weeks trying to set up a dev server on CentOS installed on a VM. Just configuring the server took hours of trying to figure out what goes where and in the end I realized that the only thing I did wrong was the runlevel! Which I found out today is actually a thing!!!!
I thank you all for existing. Without you, us web developers would go crazy!2
## Building my own router
IT HAS ALREADY PAID OFF!!!!!
So I (with my fam) have evacuated from the capital of Lithuania into a distant place - much smaller, where average age is prolly >30 or even >40 years. I live in a village now. In a house with very good neighbours. In fact these neighbours own that house :D
Back to the point.
So these neighbours used to share their wifi (w/ internet) between the two houses. They have the line, the mian router has quite a strong antenna and that other house has 2 repeaters: 1 on the outside wall and another one -- indoors. Sepeaters are connected sequentially, i.e. the indoors one is repeating the outdoors one. ikr....?
The first day was alright. We settled in, got everything set up wifi-wise. Peachy.
The second day repeaters refused to issue a DHCP IP. That's something, right? Alright, nvm - I don't mind setting up static IPs. In fact I prefer them over the DHCP magic!
And by the noon both repeaters were connectable but neither of them could provide internet connection... We that sucks! I restarted both of them a few times, neighbours restarted their main router -- still no luck.
Here comes my router [God am I happy with this purchase and the whole idea of a customized router!!! Thanks @hakx20!].
I brought it outside, plugged it in. Connected to it through it's hotspot, used nmcli to connect to neighbours' main router with an internal wifi card (that shitty mPCIe operating in USB mode. yes, the same one, manufactured in 2003. Yes, in g mode.). A couple of iptables rules for traffic forwarding et voila! I have built my own repeater! And tomorrow I can WFH w/o any issues.
Yes, hardware routers are faster and easier to maintain. Yes, hardware routers are cheaper and usually have nicer bells and whistles. But when hardware fails you and the last thing you want is going to the public (shop), soldering rod won't help you. A software solution becomes the easiest to set up, considering you know how to.
Boi am I so happy about my purchase! CentOS router FTW!
P.S. even though we've fled the city we are responsible citizens and we've self-quarantined ourselves for the 14 days period. No local person any closer than 10 meters for the whole period until we're cleared. Being away from the city gives us sooo much freedom! Especialy now, when cities are shitting bricks in fear.6
NewLifeNewHope update No.2 / Day 5
My Server Is finally opened and i installed 2x8 TB WDC Harddrives and SATA 128 SSD. I know this server is freaking garbage, but i got this PC for free, and have somewhat good-ish upgrade path, so heres the spec :
-Gigabyte H110m-S2 LGA1151
-8GB DDR4 single channel RAM
-128 GB SSD
-TP-Link 1000mbps NIC
so the plan is to make this server as the Main Repository -- yes no offsite backup plan for now -- and also i want to make this server as an Email Server and for hosting my company's website. I've already asked for static IP from my ISP and will take effect tommorow.
I need help for choosing the Operating System (i like centOS) for my server. and to setting this Server to work like what i planned but i don't know where to start, Any help and/or References will be great !14
When you're developing it's very well advised to run your software locally in an environment as much as possible matching the real environment.
So for example, if you're running linux on production then you also run it locally to run your code.
Here's where people need to shut the fuck up:
No, mac is not good for linux development. Not unless portability is already a concern that you have and even then it might be counter productive. So many times when people say this, portability isn't not a concern. What runs on servers is up to them.
If your servers are going to be centos, then you develop with centos. Not with debian, gentoo, ubuntu, maxosx, etc.
Even different linux distros are a headache for portability when it's just to support a few desktops for development so don't think that macosx is going to cut it. It might not be as radical a difference as between windows and linux traditionally is but it's still not good for "linux" development. I don't think people making that statement really know what linux is now how different distributions work.
What you use for your graphical operating system doesn't matter to much but when you run your code then there's a simple solution.
Another thing people need to shut up about. It's not docker, unless you're already in Linux where docker is one of many options such as chroot or lxc.
This question always comes up, how do you developer for linux in windows? No it's not docker it's virtual machine.
It's that simple. You download the ISO for the distro you want and then install it on a VM. What does docker for windows do? It runs a linux VM that runs docker.
This may come as a great shock to developers around the world but it is possible to run linux in a VM and then any linux application your want including docker.
Another option is to shove a box in the corner, install what you need on it, share the file system and have people use that to run their code. It really is that easy.10
Decided to install new CentOS to prepare for Red Hat exams.
a) had to disable VirtualBox Audio and USB otherwise it got stuck during boot (lvm2 masking did not help)
b) First command - "dnf update". Crashed in middle of the process and completely screwed dnf/yum (TWICE!). Went through just fine when executed from runlevel 3.
So far it held up to the name Enterprise Linux because this is the exact out of box clusterfuck I would expect from a corporate.4
Autodesk + Linux is such a goddamn clusterfuck.
Firstly, they only release RPM builds for Maya, and say that they officially support RHEL and CentOS only.
No support for Debian, Arch, etc. What. The. Fuck.
Fine. Okay. Corporate policy. I can live with that. I use alien to convert the RPMs to DEBs on my ZorinOS installation and then found a script which does the installation for me. Cool.
Installs with a few library fuckups. Okay, no problem. I added the missing library versions (ancient libpng and libtiff). I run it. It throws up with some error involving licensing.
Upon searching it seems that Maya 20-fucking-17 can't handle the "new" consistent device naming system (the one which renames eth0 to enp1s0 or whatever). WHAT THE FUCK. Okay. Found a way to disable that. No effect. It's doing the equivalent of a boot loop with the same error.
Wow. This is the leading player in 3D content creation software :/
(As an aside, I did try to install Fedora 28 but it keeps failing with a TPM error. Yay for Linux distro quirks).1
Installing OS onto server
Configurations and Updates
Won't boot up and keyboards not functioning till after grub...
"A start job is running for Wait for Plymouth Boot Screen to Quit" can go fuck itself.4
I'm a fan of Linux, and have used many distros (arch, ubuntu, debian, fedora, mint, centos, rhl) and many desktop environments (KDE, Gnome, Cinnamon, xfce, Enlightenment) before asking this question.
But every single one of these desktop environments always have felt slow to respond in some cases, where I click something and it doesn't open/close immediately, or i double click something but it fails to open or select something. basically I'm not confident my actions on the GUI will have guaranteed, quick responses within reasonable time. I've never ever had this issue with Microsoft OSes (keeping aside the many badly coded softwares which hang or crash). I'm not talking about specific softwares, this is just general usage of opening settings and using the file manager, window menus.
I'm pretty sure my hardware is not the issue. I've run everything on the same rig. And this has always kept me from fully committing myself to a Linux distro. But I can never be sure about display drivers, as they're not identical. But the issues in Linux has been noted by me for many years. So I doubt it's the drivers either.
Is there anybody who agrees with me and know why Linux is the way it is like that, or is this just me facing this annoyance?13
I was setting up a small home server running CentOS to my closet and was fighting with a USB Wifi adapter that wouldn't stay "awake". Googled the error messages and nothing...
Decided to about it on the CentOS forums and mentioned (MENTIONED, WASNT THE POINT) CWP (CentOS WebPanel) in my question, an admin came, COMMENTED A LINK TO A FORUM POST THAT TOLD "CWP IS NO WAY LINKED TO CENTOS" AND CLOSED THE QUESTION!
FUUUCKKKKK, i wanted to hit something sooo hard. The admin basically turned my point from A to X.4
## Building my own router
So after poor luck with mPCIe in my miniPC I decided to go with USB wifi solutions. So I got the https://aliexpress.com/item/... , hooked it up and started setting things up. Took me a day to figure out that firewalld (CentOS7/8 firewall) is not directly compatible with raw iptables commands. Damn it! But hey, a lesson learnt is time well spent!
Installed named, dhcpd, hostapd, disabled NetworkManager for my wifi card, etc.. And had to learn another lesson -- if a netowrk interface is bridged then iptables sees the bridge rather than the raw interface. That's another 2 hours well spent :)
In the end I have a working AP!!! It's still hooked in to my router via RJ45, but it does work and does work quite well!
Here's some comparison for now:
via router (2.4): https://speedtest.net/result/...
via router (5): https://speedtest.net/result/...
via miniPC (2.4): https://speedtest.net/result/...
via miniPC (5): <TBD>
Not that bad, aye?
All in all I'm happy with my decision to build a miniPC based router. Now I have the modularity I wanted so mush and a complete control on my networking! Can't wait for wifi6 USB dongles to be released :)4
Fucking mongodb... the name is really fitting "mongol db"..
I get that a NoSQL db can be very useful but holy crap mongodb is shit..
Even better is the security.. holy shit it's insecure..
"Just use the configuration to only allow 127.0.0.1" stfu that shit apparently doesn't work on fucking centos..
And yes my customer did get hacked
And yes they did blame me
And yes I did have a backup5
Sometimes life takes unexpected turns:
I studied mechanical engineering and did some "computer stuff" in my free time, you know, "programming" with Java, toyed around with HTML/CSS/PHP a few years ago, some local server stuff with a raspberry pi, nothing fancy.
Half a year ago i got hired as engineer first but they said they needed an "IT Guy" also.
What i did since then
*Researching, Testing and Planning the introduction of an ERP software
*Planning, coordinating and (partially) setting up a new server for the company (actually two cause redundancy (heavy lifting got done by our IT partner, its not like i suddenly know how to do the entire windows server administration)
*Writing 3 minor tools for some guys in the company in java
*Creating numereous excel vba scripts that make work a lot easier
*doing all the day to day business that comes up when absolutly noone know how to use a pc in the company
*consulting the boss about webshops and websites in general and finding a decent partner
*and some engineering
Did i mentioned that i studied mechanical engineering? I know nothing about all this, or rather, i know enough to know that i know not enough.
My current side project is creating a small intranet, so creating a new VM in Hyper V, setting up some OS (probably slim CentOS), getting a Webserver running and making it somewhat secure. Then i need to create some content, i am very close to just install a mediawiki and call it a day. If i write anything in PHP i fear that i make way to many erros or just reinvent the wheel, on the other hand, i couldnt find anything resembling what i need. I also had to create the front end side, i knew CSS around 2010, there is probably tons of stuff i dont know and i will make so many errors.
This is frustrating, everything i touch feels like i am venturing the beaten path but noone ever showed me the ropes so everything i do feels like childs play. I need an adult. Also the biggest Question remains: What i am?1
One will seldom hear me completely shit about a piece of technology.
But my time has come to do it again:
Fuck RedHat man. Like, really, fuck you. Fedora is fine. Centos is fine. Fuck red hat.
That is all. Thank you.5
Helping a client to update their 5 years old payment system to support the new mobile PayPal library via Braintree.
Found out you need to install a server SDK that requires PHP 5.4.
Installed and then realised the server is still on PHP 5.3 (CentOS 6).
Told my client that they require a new server just so that I don’t need to manage the PHP 5.3 to 5.4 update on their live server and I can install Node to use the Braintree NodeJS SDK 😇.
Feels like heaven.2
I'm currently planning to set myselv up with some vps/dedicated server's for a project. What i plan to do to secure these servers is.
*Use centos 7
* Setup Wireguard and join all of the servers +1 client (my pc) to that network
*Disable SSH Access from outside that VPN
*Only allow RSA Key login to the Servers
*Install Cockpit for monitoring
*Intall docker/kubernetes for the applications i plan to run
What do you guys think of that as a baseline? Im not sure if my lower powered VPS (VPS M SSD from Contabo) will work as Kubernetes Nodes, does anyone have experience with that?
In general these Servers will be used for my projects and other fooling around.
If you guys have other suggestions for Securing/monitoring or other software i could put on to have more control without eating up to much of the Servers power, let me know :D13
I need to encrypt some large files at rest and then decrypt them immediately prior to processing.
App and files are on a Linux system (CentOS). App is in C. Machine is controlled by a third party.
What encryption libraries would you recommend? And, is there any clever way of managing the decryption key beyond compiling it in the code and doing some basic obfuscation?
Are they fancy obfuscation libraries out there, for example?
And, the reason I'm not going to SO (well, one reason) is that I don't want to have 50 answers that tell me that's it's impossible to 100% protect data on a machine you don't control. This I understand---just looking for "best effort" solution.8
Just like JS frameworks, everyone is trying to reinvent the wheel with an OS, now more than ever. Some give it a better tread, but things are hardly ever adopted by the end-user, unless proven to be a leader.
This is where Windows and macOS excel.
I have a love/hate relationship with Ubuntu, and use CentOS 7 for my servers (so I can get genuine, hands-on Debian/RHEL experience) but honestly, it ends there for me - which, again, is close to lightyears away from what the average person would use outside of our industry's cliche.
However, just like JS frameworks, there's a reason that each one exists; to fill a gap the others don't. This is where it gets a bit personal to me, and reflects a habitual mistake made by the human race, in general.
If we simply worked together towards setting true standards based on non-competitive collaboration - we'd be happier, positive, and much more productive.
I've every been a Arch Linux fag. It's my main OS from 5 years. With a small parenthesis of two months of FreeBSD recently, I've used before Arch Kubuntu, Ubuntu, Fedora KDE, OpenSolaris (randomly), CentOs, plus a lot of others distro for tests.
But I've never tested Debian!
So I've installed it on my small server.
Oh... My... God.... It's fantastic. PACMAN >>> apt, but damn it's really stable and out of the box even if minimal. A very surprise. I think it can be my favorite remote Linux for a long time....
But a question rises. Why with a father like Debian... Ubuntu after the 11.04 is such a shame? The last I've tested is the 12.04 I think, but I've hated it, and I hate it even now. (Crash, driver not found, apt problem, very heavy repos and my internet sucks, UNITY, etc...)
Ubuntu, what happened to you ...? With Kubuntu 8 you were such a good guy...4
You know what's a good place for init Files? A standardized place...
A place, where one would expect it...
You know where isn't a good place
You know what is also a fuckin bright idea? Generic names....
Postgresql-10 is a rather anoying service name, if your plattform doesn't feature autocomplete for your plattform. Looking at no one. *Cough* centos *cough*
Well at least manpages for the service would have been nice...2
Discovered this dumb backdoor into http://tutorialspoint.com/codinggro... months ago (June 2019). It's in Project>Compilation Options
It lets you execute any command on their server. I found a lot out:
The system is Red Hat based (Fedora/CentOS/RHEL)
It uses Linux kernel 3.20
It has 251GB of RAM
It has an 800GB HDD
Its IP is 172.17.0.2
Its main username is cg
It uses systemd init9
So I'm trying out docker and see how I can make use of it, current setup:
1. Ubuntu on VM and Mac for Asp.Net core development
2. Windiws for MS only stuff like SQL Server
3. Ubuntu Server on VM and is running docker images: MS image for SQL and Ms image for dinner core.
What I did so far one script which will handle updating SQL Server database on windows with the changes done on docker SQL image
Then publish website from Mac or Ubuntu to docker image. I have yet to find a way to execute scripts remotely on a docker image using bash script from a remote
What should I do next? And for home setup go for Ubuntu server or CentOS? Any recommended packages for server administration? Workflow ..etc.?2
Got handed a CentOS 7 cluster, previous admin made kernel command line changes in grub.cfg instead of default/grub.
Ah, thank you.
me@host $ vagrant init bento/centos-7.2
me@host $ vagrant up && vagrant ssh
me@vm $ ping google.com
error: unknow host
ARE YOU FUCKING KIDDING ME
I FUCKING REINSTALLED BOTH, VIRTUALSHITBOX AND VAGRANTFUCK; THIS IS FROM FUCKING SCRATCH, WHAT THE FUCKING SHITFUCK DO YOU MEAN WITH UNKNOWN HOST???3
FML. Just when I finally managed to dual boot win10 and centos, only to just read the news of RHEL change its focus and shift to make me a beta user into Centos Stream. Time to distro hop to Arch.7
So I got access to a new Centos server. I had to install applications like Mysql, tomcat etc. The install was easy but configuration to be done were fucking headache. Admin guys were such Assholes that they dint care much to help. It took me 3 days to finally sort out and got things running. Yay! I believe I learnt a lot about Linux. Thank you Admin for being such an asshole✌️1
## building my own router
I hoped things would go more smoothly :)
Anyway, my new miniPC easily accepted CentOS 8 - no fuss here. And I've got to say - I love CentOS8 so far! Shell has amazing nifty tricks, UI (gnome3) is also snappy, video/audio/ethernet,.. everything works.
What I did NOT expect is hardware being off. Well okay, the price was low - it was obvious smth is not right. But still.. I decided to build my own router so that I could swap wifi card whenever I want. So that I could run my own network services in there. Turns out - the card swapping is not as easy as one might think.
I got the AX200 WiFi6 card for that very purpose. But once plugged in the OS can only see it's bluetooth module. Weird... What's even weirder is that even though the card is PCIe, the OS uses btusb module to talk to that device. What? USB?? emm.. What??
And there it is. After opening it up again I noticed that the mPCIe area is marked with a label: "USB WIFI / WWAN". USB? Does that mean this PCIe slot is wired into the USB bus? Not impossible I guess.
Googling for a "pcie wifi over usb" or smth like that brought me to one reddit (I think?) where someone wanted to build a DIY wifi mPCIe -> USB adapter and someone else adviced hime that (for some reason) at best he could only get bluetooth working (hey! just like me!). It's got to do smth with pcie channels and USB being too weak to handle all that load, or smth.. IDK, I'm not a HW guy.
Well that sucks then! I have a mPCIe slot that does not work as a PCIe. Shit! So I guess the best I could do is to plug back in the same wifi card that came with the device. It smells like 2003 - supports only g protocol. Fine, let's try that. Maybe I'll find a way to work around this mPCIe limitation later on (USB adapter or smth... except there are no USB WIFI6 dongles yet :( ). So I plug it back in and start turning it into a router. Disable NetworkManager, configure static NCs' settings, install dhcpd, hostapd, bind and others. Looks like all is done! Now it's time to start it all. systemctl start hostapd --> FAILED. wtf? journalctl says it could not initialize a driver. umm okay? Why? Forums say I should airodump-ng check and kill whatever's using that device. Fine. airodumo reveals avahi and wpa_suppl are still using it. kill, kill, GOTTA KILL 'EM ALL!! Starting hostapd again -- same shit... wtf?
My gawd... That shitty network card does not even support AP mode :( I mean.. My USB wifi dongle for 2€ supports 2x more modes, is faster, has better range and is easier to work with than this old tart!
Yeah. That was an interesting day. When enfironment engineers break my testing environments at work I'm glad I have where to spend my time now.
BTW any ideas how to bypass this mPCIe nonsense? Come on, there are USB GPUs out there.. Why can't they make a USB (or dual-USB if they really need to) mPCIe adapter?11
## Learning k8s
Okay, that's kind of obvious, I just have no idea why I didn't think of it..
I've made a cluster out of a rpi, a i7 PC and a dell xps lappy. Lappy is a master and the other two are worker nodes.
I've noticed that the rpi tends to hardly ever run any of my pods. It's only got 3 of them assigned and neither of them work. They all say: "Back-off restarting failed container" as a sole message in pod's description and the log only says 'standard_init_linux.go:211: exec user process caused "exec format error"' - also the only entry.
Tried running the same image locally on the XPS, via docker run -- works flawlessly (apart from being detached from the cluster of other instances).
Tried to redeploy k8s.yaml -- still raspberry keeps failing.
And then it came to me. Wait.. You idiot.. Now ssh to that rpi and run that container manually. Et voila! "docker: no matching manifest for linux/arm/v7 in the manifest list entries."
IDK whether it's lack of sleep or what, but I have missed the obvious -- while docker IS cross-platform, it's not a VM and it does not change the instructions' set supported by the node's cpu. Effectively meaning that the dockerized app is not guaranteed to work on any platform there is!
Shit. I'll have to assemble my own image I guess. It sucks, since I'll have to use CentOS, which is oh-so-heavy compared to Alpine :( Since one of the dependencies does not run well there..
Learning k8s is sometimes so frustrating :)2
There is a lot of talk regarding IDE themes but what about your console?
Green text black background bash on Centos
Green text black background DOS prompt9
This appears to be a service designed for idiots. $89 a month for ho-hum specs. What strikes me more though is that with CentOS selected, it still gives me MSSQL options. Learn to js, n00bs!7
So, My usual dual boot setup is Linux(Dev stuff) and Windows(For gaming) and for Linux I always create different partition just to make sure I don't fuck up while removing Linux(mostly switching). So at one time I wanted to switch to CentOS and I accidentally deleted windows partition of C drive which had like 90+GB just for Steam....it was not Big loss but still it was pain downloading data for steam games.
Trying to install Centos7 onto my proliant g6, red screen, try a fix, red screen, try another fix, red screen, finally find a fix that seems like it is the exact problem, screen dies can't see bios... god damnit.18
Installed centos 7, docker, standalone kubernetes on dev machine in 20 minutes.
Spend 8 hours starting fucking dashboard service, still no fucking luck, no fucking logs, nothing.
Fucking pending states without fucking explanation.
All the fucking pods are running fine except one fucking dashboard. I want to see the fucking dashboard.
Fucking shit fuck.
Probably as always if I clean the machine and reinstall everything it would start normally, without fucking problem.
Debugging fucking containers is so much pain in the ass, fuck.
I think it’s enough for today.2
A friend of mine who wants to learn about Linux has a stronger will than me, as I think installing Linux in 2020 is gonna break me but he's still stoked as shit. I'm fucking serious. He asked me to install several distros, in order of interest (because they all fucking failed, because of fucking course they did) on a USB HDD he was using just for this.
We tried, in order:
Arch: initramfs wiped his Windows HDD when it crashed. IDFK how, but it zeroed the top 32KB of the drive. It wasn't even the right HDD...
Linux Mint: nvidia drivers refused to see his GPU after install. No matter what we did. Live media saw it fine until it was installed on the external drive, too.
Debian: Installer couldn't see the external HDD, ever. No matter what we did. It had a /dev entry, lsblk and fdisk saw it, I could format and mount it, but the installer crashed when it refreshed the device list when it was present. Every goddamn time.
Fedora: Installer broke halfway through as an executable (or 70) were corrupted, but the disc matched the ISO and the ISO sums correctly, so this is apparently how it was packed and shipped.
CentOS: Refused to boot. Just entirely. GRUB would go to load the kernel and it'd hang.
All ISOs and discs were verified as matching provided sums using MD5 and SHA256. How the fuck is Linux so fucking hard to get working on older hardware in 2020? Worked great in 2008, worked great in 2018, why is 2020 such a goddamn issue?13
What was your distro journey?
Mine is composed of the following time-based list of the primary distros I've used, along with a smattering of flash-in-the-pan tests, including but not limited to Suse, OpenSuse, OEL, CentOS, Sorceror, Vector, Mint, and ElementaryOS.
1998-1999: Redhat 5.1, 5.2, and 5.3
2005-2007: Debian(I still use it for cloud VPSes)
What the fuck is this piece of shit called Ubuntu? I was writing an automation tool on my local PC (ArchLinux) in c++ 17 (c++1z or whatever). Finished it today. Working and compiling so everything is fine. Went to my server, git clone, make.
Okay some errors because I havent installed my networking libs yet. So I installed them.
Error because I was using a c++ feature only available in c++ 17. But wtf. I told g++ I wanted to compile with c++ 17 support. I mean... On arch it compiled fine. On centOS it at least told me that it doesn't know c++1z (it was some really old centOS). BUT JUST TELLING ME ITS BECAUSE I SUCK AT PROGRAMMING?? THAT IS SO NOT OKAY. MY CODE IS LEGIT ISO C++ 17. FUCK UBUNTU. Installing Arch on my server now because I can't handle this shit anymore...16
Spent about 5 hours trying to figure out why php-fpm 7.2 was sending a timeout to nginx inside a CentOS 7 container. In the end I couldn't figure it out, downgraded to PHP 7.1 and then everything start working fine. I really hate using CentOS for containers since it also requires privileged mode to be able to start services. Hopefully I can move away from using CentOS for containers soon since the base image is also quite fat.
why.... why on this freaking earth would you go an enable Hypervision on me?
seriously #Windows, you are starting to drive me over the edge.
theres nothing like powering up a centos server - yea not even a DE, (that had no issues yesterday) and getting "VT-x is not available".
the last thing im going to think to look at is you enabling your bullshit despite it was already disabled,
Since early 2016 a LinuxDev at my work, pushed me (windows admin) right in the CentOS world. With some practise I had to build a infrastructure to deploy Ubuntu to development clients (laptops with stuff without windows) In perspective I had to migrate this infrastructure to my team (windows admins) and run it there as were this all the time our business. I loved powershell but for some reason I have had to learn Ruby, bash etc.. Now I am the first Admin with some pretty skills in Linux, my workplace comes without any version of Windows. I am flying with Debian, Ubuntu, redhat and CentOS. The finished work from past enabled my team and me to drop fully automated Linux Clients for our developers.
Well last weekend Windows 10 fuc*** up with the creators update and destroyed even my USB3 ports... I didn't even spend lot of my time playing with this machine... So my desk is now running arch.
That day my colleague thought, windows isn't my passion is thanked every week once for directing me in this pretty good world.
Today I am still the first Linux DevOps in my team, but still happy.1
After seeing how OS X and various Linux dists are handling virtual desktops Microsoft is leaving a lot to ask for in Windows 10. OS X's full screen your app into a new virtual desktop is pretty neat after you learn to swipe back and forth. And CentOS for instance allows you to create a virtual desktop and associate certain apps with different desktops. Windows however, does only allow you to create extra virtual desktops. But if you'd like to swipe between them you're out of luck, unless your computer has a touch screen. And if you think that clicking on an icon in the task bar would transfer you to your opened windows of said application you are wrong. It just launches another instance of the same application. Sigh...3
Any recommended reading material for someone deploying a go web application for the first time?
I am trying to see if I can deploy a go app into one of my institution's test linux servers. I would have one of the technicians create the server, so It doesn't really matter what it is, but lets say for argument's sake that the servers in question are either an ubuntu server or a red hat/centos server. Any recommendations before I dive in?6
At this point of my side project I wanted to check out openresty for dynamic proxy creation in nginx.
Happy to check it out I installed centos 7 as guest using new command I just learned virt-builder that would automate vm creation.
Spend 10 hours debugging why I can ping and ssh but cannot get to application port from any network.
Checked iptables, restarted network, reinstalled vm again 3 times with different methods.
Scrolled trough whole internet and it’s mostly outdated problems.
Learned bunch of new commands without new results.
Results were always the same:
No route to host.
Turned out firewalld is fucking thing now.
systemctl firewalld stop helped
Now I know that systemd would kill me at some point for sure.
What I can add at this point ?
Please add more distros, differences, standards and programming languages so world definitely would be better place.
I need a short break now to actually start making shit that I wanted to start at 4-5pm on Saturday.
It’s Sunday 3:30am and time for breakfast.
At least I am happy it started working.2
I just want to shoot myself. This happened to me today. I will replace the name of the person for privacy issues. i joined this company a week ago.
"hey [co worker name].
How can i install a tool on my sandbox. I'm not on the sudoers file. Have you used "ag", is awesome to search code and nicer than grep
is actually available as a centos package in the repo.
the_silver_searcher.x86_64 : Super-fast text searching tool (ag)
but i don't have permission to install it
my co worker's response.
For that you would need first to create a presentation and show it to the team, explaining the benefits of that tool over what we have right now
That presentation you would show it to the team and from there we can do corrections and any other verifications in order to have a meeting with Jorge and DevOps to show them the presentation2
It was about 2:30am.. The darkness had been dominating the outside for a while, and I was having issues with my partitions on my CentOS server. Yup that's correct. I think.
I really wanted to go to bed. Last thing I had to do, was re-allocate some space from centos-home to centos-root. But I fucked up, of course I did.
After about half an hour of making food and trying different stuff to solve the "Can't read superblock error" error, I found an answer that just lead to "Can't read secondary superblock error, sorry".
At least they apologize now lol.
I ended up trashing the centos-home volume (is volume and partition the same ?) and just smashing it all onto centos-root. I lost some data, but screw that, stuff is working and I'm not going to bed.
Yeah, stuff is working. I hope. No errors encountered yet.
Moral of the story: Home partition isn't needed and it's okay to kill it1
My group set up a Linux Dev server. We got hacked by Chinese hackers. We set it up again but even more secure with only people inside the uni can access it. We got hacked again.Turns out one of the modules in a container was using an outdated CentOS version. P.S The malicious file on the server was called kk.love.1
TL:DR linux newbie, looking for advice/links (skip to bottom for questions)
After i had been looking for a job for quite some time, a couple of months ago i got hired by "smaller" company doing web stuff. So far it have been a great place, good colleagues, and overall just having a great time!.
They seem to value me alot, so that's great!.
Anyway, yesterday i got called into a meeting - and got told they wanted me to start learning "Server stuff (linux)". That got me quite excited, because it always was something i wanted to learn - but never really got around to doing.
But i never touched a linux installation before, so i'm really on ground zero - but im not afraid, i'm a quick learner and quite efficient at googling :)
I figured i would ask here, since other people here always seems to be happy to help other people out.
So far i have manage to setup a server, install various stuff (php, mysql and so on) and done setup a couple of domains/subdomains on my server. Also got a vestacpinstallation working - so overall im quite happy so far.
I figured maybe somebody had some good links/advice for a linux newbie :).
* Performance/Security, will obviously be a big focus - anything i should look at? - any must look at?
* Monitoring tools, how do i monitor various websites running on my server? Here i'm thinking bandwitch, cpu/ram usage and so on pr site basis.
* Any other stuff i should be looking at?
Little about what the server will/should be running :)
* WordPress installations only (e-commerce mainly)
* PHP 7 / MySQL / phpmyadmin5
Linux is great - to tinker, to pull in all your FOSS, mess around...
But it's so fucked up, if you actually build and maintain a product on it, i.e. try to distribute s.th. in binary for money even. It's just not intended. If you offer your code for free, you can always say: "Ah, just compile it yourself. You might need these 29 dependencies, of which 2 are not even checked by configure, oops, and now it crashes, maybe in that qt library version, you picked there's still a bug?.. you know, it worked on my machine, sorry."
But if you sell it, it better install and run! And even if you target only the main distros of all that fragmented Linuverse - let's say, Debian, Ubuntu, RHEL, CentOS, Fedora, and if you're in Germany OpenSuSE and SLES, you'll start to see the crap of work you're up with. What you could try is to orchestrate a docker fleet with one container per distro, where you take the oldest version you still support compile a newer gcc there (to at least have C++11) and all your third party libs and then hope the resulting binary runs on all the newer versions of that distro, too.
(You could even be so brave as to try to pick a deb and rpm distro to build for all other distros.)
But ABI incompatibility can still bite you. For instance we once had the insane case, that our GUI would no longer start just by switching the Window-Manager to KDE.8
About every 2 years I try to adopt Linux full time. This might be my time.
Most likely to work seamlessly on Sony or Asus? Ubuntu or Centos?15
After fighting with centos 7 when setting up autofs, finally got it to work with the same instructions I used before on a newer version. Bug or luck? 🤔2
It's quite a challenge to try and get a Docker image build as small as possible. But the worst bloat is coming from having to use CentOS 7 as a base image.5
Set up .net core in CentOS 7.
I'm able to access `dotnet --info` but can't access `sudo dotnet --info`.
Provided I can't access root.2
When you see a rant thanking for stickers with Windows as the OS :,( Windows Windows Windows .... What OS do you dev in? Me: OSX, CentOS8
Hi everyone. I'm sorry to take up some of your time. I've recently moved out and am now living alone (broke up with my gf of 3 years). After all the work that I put into moving out, I'm out of energy and I can't find it in myself to do what I want to do. I feel a bit trapped and need some help. If anyone knows a way out of this shithole I put myself into, I'd greatly appreciate it.
I'm also having network issues and, on top of that, I can't install CentOS 7 on a smart array... Not so smart after all, apparently.
I'm generally feeling like I've made a bad choice, but, deep inside, I know I want to focus on work and learning.
Any tips appreciated. Thanks!11
Today I managed to make my VM (running CentOS) AND my Windows 8.1 crash with a SINGLE line of PHP that's supposed to make a SQL request.
I fucking hate Drupal, because even though I feel like I accomplished my life, I also want to end it right now
CentOS or Ubuntu for developing?
I've been working on Ubuntu as developer for a couple of years. As a requirement in my new job, they want me to use CentOS, so i was wondering how different could be it to Ubuntu?2
How much ram do you generally need in a Linux server? I'm already using 70% out of 2GB on my LAMP stack, and I'm planning to deploy my website prototype to show off in interviews next year. Is 8-16GB of EEC RAM a better option for future proofing? The only thing holding me back is I don't plan to make money on this server in the immediate future so I'm trying to weigh the pros and cons. 🤔
This CentOS server runs on CLI only so the GUI isn't a factor. Eventually I'll have it host Java Spring API's which will easily take up what RAM I have left. On top of that I have 10 db on mySQL so that's another likely culprit.7
"Okay I'll try Centos 7 on my personal server (kinda old hardware).. Wired network does not work with my eth card? Centos 6 it is then.. " what is your favourite Linux server os?2
PCI DSS scan came back saying that WebDAV extensions need to be disabled. Kind of surprised, since I have other servers I’ve configured to standard and I can’t find anything in my notes about it.
In either case, been searching for info on how to fix it for 2 days and turned up nothing useful. Report found it on ports 80 and 443, so a firewall fix seems out here.
Running Plesk 17.5.3 on CentOS 7. Anyone have any pointers on how to get the job done?4
Started by working on centOS to make it work on my PC. At first it was just look on the internet and change values, then i found this great thing called manuals and documentation.
Soon after I learned I could modify some files to change the behaviour of the system, write my own extensions. And before I knew I was HOOKED!
Setup a VPS from Linode today (they hair started offering 2 GB for 10 USD), and was really pissed when I discovered that their “cloud enhanced” kernel had disabled SELinux and generally removed all sorts of useful features and security features from the default CentOS kernel.6
I've been wondering about renting a new VPS to get all my websites sorted out again. I am tired of shared hosting and I am able to manage it as I've been in the past.
With so many great people here, I was trying to put together some of the best practices and resources on how to handle the setup and configuration of a new machine, and I hope this post may help someone while trying to gather the best know-how in the comments. Don't be scared by the lengthy post, please.
The following tips are mainly from @Condor, @Noob, @Linuxxx and some other were gathered in the webz. Thanks for @Linux for recommending me Vultr VPS. I would appreciate further feedback from the community on how to improve this and/or change anything that may seem incorrect or should be done in better way.
1. Clean install CentOS 7 or Ubuntu (I am used to both, do you recommend more? Why?)
2. Install existing updates
3. Disable root login
4. Disable password for ssh
5. RSA key login with strong passwords/passphrases
6. Set correct locale and correct timezone (if different from default)
7. Close all ports
8. Disable and delete unneeded services
9. Install CSF
10. Install knockd (is it worth it at all? Isn't it security through obscurity?)
11. Install Fail2Ban (worth to install side by side with CSF? If not, why?)
12. Install ufw firewall (or keep with CSF/Fail2Ban? Why?)
13. Install rkhunter
14. Install anti-rootkit software (side by side with rkhunter?) (SELinux or AppArmor? Why?)
15. Enable Nginx/CSF rate limiting against SYN attacks
16. For a server to be public, is an IDS / IPS recommended? If so, which and why?
17. Log Injection Attacks in Application Layer - I should keep an eye on them. Is there any tool to help scanning?
If I want to have a server that serves multiple websites, would you add/change anything to the following?
18. Install Docker and manage separate instances with a Dockerfile powered base image with the following? Or should I keep all the servers in one main installation?
19. Install Nginx
20. Install PHP-FPM
21. Install PHP7
22. Install Memcached
23. Install MariaDB
24. Install phpMyAdmin (On specific port? Any recommendations here?)
I am sorry if this is somewhat lengthy, but I hope it may get better and be a good starting guide for a new server setup (eventually become a repo). Feel free to contribute in the comments.22
So I moved my full-stack in-progress web application to a docker container to ease development, and it's certainly accomplished that. I can simultaneously run a SQL database, node.js, java, and a Linux server all within my Linux operating system. It's like a mini vm. And when I need to deploy I just deploy it directly with Heroku, no configuring a host manually.
In a way I'm happy with this because it makes both development and deployment much easier, but I'm also sad because I'm basically admitting that I don't have the resources to both learn full-stack and be a linux server wiz.
Has IT gotten so big and complex that you have to compromise how much you can learn at a given time? It seems my limit is at learning 2 languages and 2 frameworks at a time. 😵1
Okay, so because my desktop has an APU (AMD A8-3850) and a dedicated GPU (AMD R9 380) in it, and i'm finally getting a (small, probably 240GB because budget) SSD for it, what Linux distro should I use? I'm planning on doing libvirt passthrough for Windows using my APU because fuck running it as a main anymore, it breaks too often. As far as I can tell, my options are as such, family-wise:
- Debian kernel: amdgpu doesn't like that I have an APU and GPU and refuses to see a screen (yes, even after all the Xorg configs and xrandr bullshit and kernel flags and...)
- RHEL: a lot of Red Hat-based distros (mainly Fedora) have packages that are broken out-of-repo and out-of-box recently, but maybe it'll like my hardware? (It's been a few Fedora releases since I last tried it, is this fixed? CentOS has such old packages that it's not even worth bothering with for my needs.)
- Arch kernel: go fuck yourself, i don't wanna take 1000 hours to get it running for a week, nor would the updates be any better than Windows' current problem (or even more so, as slightly more often than not Windows' broken updates just add annoyances and don't hose the system.)
did I miss any?29
Is it me only having to deal with horrible meeting product?
Arch Linux as my base OS, justifies my all-time updated system, NPAPI being deprecated in Firefox, Chrome and have to use Cisco WebEx every Saturdays and Sundays.
Just hate having to return to Windows to make WebEx chrome extension work for the meeting to be possible, and then a CentOS VM running for all the demonstration, explanation and teaching...
Although, IcedTea in Linux makes it possible but oh well it WebEx is still a horrible headache.1
Just bought Intel NUC and installed CentOS on it. Mounted NFS from my NAS. Installed docker, downloaded factorio image and started server. Now I have my own game server lol.
CentOS 8.1 has hit the downloads page people's!!!!
I guess it's too early for release notes yet but what ever, I know where my next few days will be spent making sure projects can be lifted up without to much hassle.
Not enough space in my Linux vps? Ok upgraded plan.
Was figuring out how to expand the free space within the partition, wasted 2hours and all I gotten myself now its a fucking free upgrade from fucking CentOS to fucking gnu grub bash Ubuntu WHAT THE FUCK2
Anyone have any recommendations on an open source security/malware scanner to run at server level for the OS and web server files on Linux?3
Went through 60 python packages to see which fails installing on the serve. Took hrs as I have no terminal access but just via jenkins pipeline. So "edit/gitpush requirements.txt and wait" many times. Eventually looped them 1 by 1 in shell. By end of day got the list that installs.
Finally sent the whole list....with confidence
-Takes full 10 mins & Fails......
(panic mode starts)
+Changed the sequence = fails, somewhere else
+1 by 1 again = installs.....
+few random without the culprit =works
+again, whole list = fails, somewhere else
Need to sleep, brain's thinking of eagles1
I installed ratposition desktop environment onto my auto login centos 7 computer... Let's just say I was stuck in it for over two hours.....
Ratposition is a desktop environment that is key board only3
I love python, when it works.
Im really new and retarded at the language, but i managed to make a small useful program for my dad.
It works perfectly on Windows, yay.
It needs to run on a CentOS server, and for some reason, smtplib wont allow me to log into my gmail when i run it on CentOS :(
And yes, i did install all packages with pip, and i do run it with Python3, same version as i wrote it in.
I also added that nifty shebang that doesnt appear to do shet for me xD3
Im setting up a cPanel Dev server for the very first time. I need to install CentOS and will be doing it through a USB. I was able to burn the iso but it wont boot :( How do I boot into the installer? :((2
My current "file/media server" is a crappy old falling apart windows box with a stupid mismash of internal and external drives with no redundancy. That sucks for a number of reasons, so planning on dropping around a grand or so (including drives) on doing it properly.
Space requirement would be around 20TB-ish of usable space, with 1 disk's worth of redundancy. That can include a newish 5TB drive I have lying around however. Would also run either Plex / Jellyfin, so some horsepower for transcoding would be nice (but no need for more than a single 1080 stream at once.) 24/7 operation, so don't want anything too power hungry.
Current (loose) thinking on the hardware side is an AM4 board and a reasonably low end CPU, 3x8TB WD golds. Software side, probably CentOS, then mergerfs + snapraid. Anyone got any insight as to other options? Hardware not my speciality in particular, so open to suggestions.14
Got a new job as a Systems Engineer; learning how much I hate Ubuntu, yet still prefer it to CentOS (for now). Windows? What Windoze?8
Ansible on centos.
Does anyone have any kind of experience with this? For some reason I could install it and now I can't... It says their aren't any mirrors find...2
so I have been trying to make migrations on centos 7 for a while now on my virtual env i keep getting this error
## Traceback (most recent call last):
File "manage.py", line 10, in <module>
File "/srv/switch/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
File "/srv/switch/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 356, in execute
File "/srv/switch/env/lib/python2.7/site-packages/django/core/management/base.py", line 283, in run_from_argv
File "/srv/switch/env/lib/python2.7/site-packages/django/core/management/base.py", line 327, in execute
File "/srv/switch/env/lib/python2.7/site-packages/django/core/management/base.py", line 359, in check
File "/srv/switch/env/lib/python2.7/site-packages/django/core/management/base.py", line 346, in _run_checks
File "/srv/switch/env/lib/python2.7/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/srv/switch/env/lib/python2.7/site-packages/django/core/checks/urls.py", line 16, in check_url_config
File "/srv/switch/env/lib/python2.7/site-packages/django/core/checks/urls.py", line 26, in check_resolver
File "/srv/switch/env/lib/python2.7/site-packages/django/urls/resolvers.py", line 254, in check
for pattern in self.url_patterns:
File "/srv/switch/env/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/srv/switch/env/lib/python2.7/site-packages/django/urls/resolvers.py", line 405, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/srv/switch/env/lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/srv/switch/env/lib/python2.7/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
File "/srv/switch/app/switch/urls.py", line 10, in <module>
File "/srv/switch/env/lib/python2.7/site-packages/django/conf/urls/__init__.py", line 50, in include
urlconf_module = import_module(urlconf_module)
File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
File "/srv/switch/app/primary/core/administration/urls.py", line 2, in <module>
from primary.core.administration.views import *
File "/srv/switch/app/primary/core/administration/views.py", line 5, in <module>
from primary.core.api.views import *
File "/srv/switch/app/primary/core/api/views.py", line 8, in <module>
from primary.core.bridge.views import *
File "/srv/switch/app/primary/core/bridge/views.py", line 11, in <module>
from primary.core.bridge.backend.loggers import Loggers
File "/srv/switch/app/primary/core/bridge/backend/loggers.py", line 2, in <module>
from primary.core.bridge.backend.wrappers import Wrappers
File "/srv/switch/app/primary/core/bridge/backend/wrappers.py", line 6, in <module>
import pytz, time, json, pycurl
ImportError: pycurl: libcurl link-time ssl backend (nss) is different from compile-time ssl backend (openssl)
even after uninstalling pycurl and exporting the pycurl variable to my environment can I get any help4
Holy fucking shit, I hate ubuntu SO much.
So what it happened..
I was tryin to set up an Ubuntu server on my machine using virtual box, and I know what you are thinking, "VirtualBox?" yeah its the only machine I had lying around and it had windows and I didn't wanna re-format its hard drive.
So Here how it goes...
Install went fine.. But when I was trying to manage multiple network interfaces, it was Terrible & pain in the ASS 😡...
So initially I needed 2 network interfaces, one for NAT adapter and another Host-only interface for SSH and stuff.. so I made changes in virtualbox settings and rebooted the VM. and it stuck on "a start job is running for wait for network to be configured" I was like okayy and removed host-only adapter and rebooted, it booted fine :/ then I tried combo of bridged adapter with my Ethernet and a host-only adapter, and what? it booted finally! but this wasn't an optimal solution because it had and IP address within subnet of other devices with my router and half the bandwidth (like 50mbps or something).. I reverted back to NAT network & I checked with ifconfig and it STILL didn't had an IP address assigned to it for Host-only adapter!! FFS I deleted the VM and reinstalled the whole thing again but this time both interfaces attached..
after installing it stuck on same shit again :'(
"a start job is running for wait for network to be configured"... FUCK!
after about an hour of troubleshooting and trying different configurations, I still couldn't get it to work.. I never had such problems with centOS.
Fuck you ubuntu.. fuck you in the ass7
What linux OS would you recommend for a little home server/nas? I guess I want something debian based but CentOS is also apparently good8
Created my first CentOS virtual machine to test code locally and at every step it seemed like SELinux was working against me. Has anyone else here spent hours trying to get just the right settings to run a webserver on an OS with SELinux or is it just me?
First try on Debian to deploy dev environment, can't fix the grey screen cross cursor vnc issue with gnome regardless whatever solution on the internet.
Screw this shit wasted plenty my time. Reinstalled back CentOS 6.
Vagrant, VMware and CentOS.
The perfect storm to drive me mad all day.
If anyone knows how to get the shared folders working in this fucking shitstorm of arse rain let me know I'm slowing drowning in this fucking river of shit.4
Hey guys. I need some help setting up cPanel on two centOS VPS. I want main vps to act as main cpanel vps (with ns1) and secondary vps to act only as ns2. Anyone knows of a good tutorial? I've searched a lot but most of provided tutorials are incomplete. They don't explain how to park your first domain to WHM and how to setup nameservers1
Why, WHY WHYYYY does my Behat installation works perfectly on Debian, Ubuntu, Windows 7, 8 and 10, but not on this MOTHERFUCKING CENTOS PIECE OF SHIT??
Fuck, I hate loosing my days running after Github issues5
Puppet is configured to install custom rpms on only CentOS6. Or so I thought. Received a ping today that CentOS6 rpms are trying to install on Centos7. Wtf?
What are types of load issues occurs in a Linux (Cent os) server and it is troubleshooting methods???15
Spent days adding cloud-init to a CentOS kickstart script for a baremetal template.
I didn't want to have NetworkManager installed but had network problems.
Turns out you need to explicitly put NM_CONTROLLED=no in the config for the interface to not use NetworkManager.
Because that makes sense.
My docker container does not have internet access. I tried so many things from multiple places but unable to resolve the issue.
Please help anyone has faced this problem.
Specifications - CentOS 7, docker ce 19.3.016