Sysadmin's blog

Script for acquire information about memory banks in server

Promlem. When one of our clients try to rails app, which use rmagick he got error in log: libgomp: Thread creation failed: Cannot allocate memory

Symptoms. Out client wrote, that his script don’t send email to his email. Discovering problem. As he told problem only with one email ishops@elserv.example.com. Domain elserv.example.com has 2 MX: root@server# dig +short MX elserv.example.com 10 ms.elserv.example.com. 30 mx.uniflex.by. Next step is to check server logs: root@server# cat /var/log/exim_mainlog | grep elserv.example.com 2010-09-06 13:34:00 1OsZ1E-0000fg-K9 => ishops@elserv.minsk.by R=lookuphost [...]