OK Joe, here’s what I tried, with a reboot, patience and an eye on the evm.log, at each step, separately :
- yum -y upgrade everything : not better
- as I saw an error related to UTF-8 conversion, and as I may have entered french characters somewhere, I tried to set the /etc/sysconfig/i18n locale to fr_FR@UTF8
- disable iptables
- reset the DB according to your last post
The last try (reset the DB) was the one that may have thrown the less errors in the log. But as many previous attempts, this lead to a stop around a memcached problem.
So, as I am still very motivated to help, I installed another ManageIQ in a different datacenter, a different site, and once running, I took the time to diff-compare the content of /var/www/miq, but I saw nothing obviously different, apart what may be called normal (logs, .git, cache…). I guess the relevant data are stored in database.
Anyway, the second ManageIQ instance is running OK, and the first one, with a fresh reset DB, is failing with the error below.
So now, the difference lies in the fact that I yum upgraded the first instance.
The logs are :
[----] I, [2015-01-19T15:50:05.505697 #2070:a4b834] INFO – : EvmDatabase.seed Seeding… Complete
[----] I, [2015-01-19T15:50:05.754480 #2070:a4b834] INFO – : MIQ(MiqMemcached:Control.stop) stopped memcached, result: Arrêt de memcached : ^[[60G[^[[0;32m OK ^[[0;39m]
[----] I, [2015-01-19T15:50:05.879126 #2070:a4b834] INFO – : MIQ(MiqQueue.put) Message id: , id: , Zone: [default], Role: , Server: [55b41930-8906-11e4-b9cb-001a4abbb9a8], Ident: [miq_server], Target id: , Instance id: , Task id: , Command: [MiqServer.shutdown_and_exit], Timeout: , Priority: , State: [ready], Deliver On: , Data: , Args: 
runcmd': memcached: aucun processus tué (RuntimeError) from /var/www/miq/vmdb/lib/miq_memcached.rb:121:inkillall’
stop!' from /var/www/miq/vmdb/lib/miq_memcached.rb:115:inrestart!‘
start_memcached' from /var/www/miq/vmdb/app/models/miq_server.rb:274:instart’
start' from /var/www/miq/vmdb/lib/workers/evm_server.rb:85:instart’
<top (required)>' from /opt/rh/ruby193/root/usr/local/share/gems/bundler/gems/rails-f9749c2ef83b/railties/lib/rails/commands/runner.rb:52:ineval’
<top (required)>' from /opt/rh/ruby193/root/usr/local/share/gems/bundler/gems/rails-f9749c2ef83b/railties/lib/rails/commands.rb:64:inrequire’
<top (required)>' from script/rails:6:inrequire’
from script/rails:6:in `’
Just to save your time (and mine) : are you willing to try to help me help you debug and point out what is failing (and in that case, I’m OK), are do you consider the yum upgrade may have damaged my server enough and debug here is not relevant, so I’ll format and re-install (and in that case, I’m also OK)?