services crashing

mattsoftnet · 05-10-2007, 12:19 PM

I have a centos server with cpanel running in it. pretty standard setup. apache, mysql, exim... what would cause services to fail and be automatically restarted or need to be restarted manually? my server provider said once that it's hitting a hard ram limit, but I hardly ever see it go over 50% usage. there has to be some reason for this to be happening.

waelaltaqi · 05-12-2007, 01:19 PM

it's not always the amount of memory you have on the machine. it's also how much memory assigned to each service. a service might restart due a a whole bunch of reasons. Memory is one....
you need to lookup your log files to see error messages...
please excute

Code:

vi /var/log/messages

read thoroughly and post error messages. if a service is restarting by it's own then the output should be mentioned there. without giving some error messages, not body will be able to help out.

mattsoftnet · 05-13-2007, 11:46 AM

ok, mysql crashed and automatically restarted earlier today. I looked in that log file you said about, but all I see is a bunch of login failures for ftp then a bunch for ssh username root. it's nothing DoS related because the ftp logins are spaced out over a few hours, and the ssh failures happened a half hour after mysql restarted. any other place I could try looking?

waelaltaqi · 05-13-2007, 12:01 PM

what about /var/log/mysql.log? i have mysql on my server and that's where is saves log @
here is a view at mysql /var/log directory:

Code:

[root@mailgw log]# ls
acpid            cron~      maillog~     quarantine_report_log  secure.4
amanda           cron.1     maillog.1    rpmpkgs                spooler
anaconda.log     cron.2     maillog.2    rpmpkgs.1              spooler.1
anaconda.syslog  cron.3     maillog.3    rpmpkgs.2              spooler.2
anaconda.xlog    cron.4     maillog.4    rpmpkgs.3              spooler.3
audit            cups       messages     rpmpkgs.4              spooler.4
bandwidth        dmesg      messages.1   sa                     squid
boot.log         freshclam  messages.2   samba                  uucp
boot.log.1       httpd      messages.3   scrollkeeper.log       vbox
boot.log.2       iptraf     messages.4   secure                 wtmp
boot.log.3       lastlog    mysqld.log   secure.1               wtmp.1
boot.log.4       mail       ppp          secure.2               yum.log
cron             maillog    prelink.log  secure.3

as you see, there is a log file for mysql ... look through that file and post.