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Search - "ethernet"
Had 2 days of vacation. Theoretically (plus weekend, plus 2 days) 6 days.
Worked today… At Saturday.
Some administrators forgot to properly check bandwidth limitations....
We had a major version upgrade of some server software at Monday.
Guess why I got called...
Of course it MUST be the software upgrade.
It couldn't be the new hardware that was setup 2 weeks ago and on which a lot of "important" VMs were migrated.
*eyes roll inside till only white is visible*
The even more annoying thing is that it wasn't that hard to figure out.
Looking at monitoring, we had spikes on 20 Gbit/s (roughly 2.x Gigabyte/sec - Ethernet) connection of some server at roughly 1.9 plus Gigabyte/sec.
IO latency spikes that made the graph look like a heartbeat EKG with severe tachycardia...
*additionally to white eyes starts cursing in reverse latin*
Incompetent admin answer: Booboo that can only be your fault - the developers must investigate.
Me (just a tad more polite): Meep Meep mother fucker, get your shit together. If the software would eat that much, the network would be a niece chunk of charcoal. Plus the time (sending instead of links to monitoring pictures… guess the lazy fucktard who's brain is a vacuum didn't even bother to check it)...
Incompetent admin: It starts at the same time. Always.
After wasting roughly another hour of time discussing with him, I just hanged up the video call.
Called someone I knew from the admin department and turns out that - drumrolls please - the incompetent admin was someone who got recruited 3 months ago…
*turning into antichrist*
I then had a not so polite discussion about how the only competent people could take days off (all except incompetent admin were on vacation) and the seemingly incompetent fresh recruit - who by the way NEVER mentioned this - was the only one left of the admin department. Which would be bad alone, but no - he even got the 24/7 emergency support role for the whole weekend.
Sometimes this company and HR especially notoriously drive me insane...
Guess next week there will be some HR barbecue.
But yeah. After a lot of raging around we nailed it down to the traffic of backups and could fix it.
Roughly 4 hours of analysis, communication, raging and hatred.
Just one hour implementing shit.
Most successful? Well, this one kinda is...
So I just started working at the company and my manager has a project for me. There are almost no requirements except:
- I want a wireless device that I can put in a box
- I want to be able to know where that device is with enough accuracy to be able to determine in which box the device was put in if multiple boxes were standing together
So, I had to make a real time localization system. RTLS.
A solo project.
Ok, first a lot of experiments. What will the localization technique be? Which radio are we going to use?
How will the communication be structured?
After about two months I had tested a lot, but hadn't found THE solution. So I convinced my manager to try out UWB radio with Time Difference Of Arrival as localization technique. This couldn't be thrown together quickly because it needed more setup.
Two months later I had a working proof of concept. It had a lot of problems because we needed to distribute a clock signal because the radio listeners needed to be sub-nanosecond synchronous to achieve the accuracy my manager wanted. That clock signal wasn't great we later found out.
The results were good enough to continue to work on a prototype.
This time all wired communication would be over ethernet and we'd use PTP to synchronize the time.
There was a lot of trouble with getting the radio chip to work on the prototype, ethernet was tricky and the PTP turned out to be not accurate enough. A lot of dev work went into getting everything right.
A year and 5 hardware revisions later I had something that worked pretty well!
All time synchronization was done hybridly on the anchors and server where the best path to the time master was dynamically found.
Everything was synchronized to the subnanosecond. In my bedroom where I had my test setup I achieved an accuracy of about 30cm in 3d. This was awesome!
It was time to order the actual prototype and start testing it for real in one of the factory halls.
The order was made for 40 anchors and an appointment was made for the installation in the hall.
Suddenly my manager is fired.
Ehh... That sucks. Well, let's just continue.
The hardware arrives and I prepare everything. Everything is ready and I'm pretty nervous. I've put all my expertise in this project. This is gonna make my career at this company.
Two weeks before the installation was to take place, not even a month after my manager was fired, I hear that my project was shelved.
"We're not prioritizing this project right now" they said.
It would've been so great! And they took it away.
Including my salary and hardware dev cost, this project so far has cost them over €120k and they just shelved it.
I was put on other projects and they did try to find me something that suited me.
But I felt so betrayed and the projects we're not to my liking, so after another 2-3 months I quit and went to my current job.
It would've so nice and they ruined it.
Everything was made with Rust. Tags, anchors, RTLS server, web server & web frontend.
So yeah, sorry for the rambling.5
What is your home network infrastructure like?
Ethernet or is everything WiFi? Is there a dedicated firewall? Servers running on a raspberry? Do you have VLANs configured?32
One of our servers had a disk fail this week. Luckily it's 1 of 3 in a RAID5 array. And, luckily, it was our mostly-dev box and didn't have any production stuff on it, except for some support things. We scheduled a disk replacement with the hosting company, took everything down, waited. Somebody at the hosting company apparently didn't know we'd scheduled the replacement, saw the machine was down, and brought it up again. Sigh. Finally they did the replacement, got it back up, but now we're seeing an ethernet port flapping, suggested they have someone go in and make sure all the jacks are fully seated, maybe one got loose when they were doing the disk switch. Bureacracy reared up again and we got the boilerplate "if there's a hardware issue suspected please boot into rescue mode and run the tests"... sigh...8
I live in a fairly modern home (built in early 2000s) and it’s nice but there’s no Ethernet ports. There are landline ports though. Has anybody used a landline to Ethernet adapter before? Or has had a set up like this?4