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.