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Re: PID file being removed
From: |
Rory Toma |
Subject: |
Re: PID file being removed |
Date: |
Mon, 08 Sep 2003 12:00:11 -0700 |
I believe you have to use the --pid-file argument to start mysqld.
On Mon, 2003-09-08 at 03:39, Shannon E. Reall wrote:
> Here is the rc script for mysql:
>
> #!/sbin/sh
> #
>
> case "$1" in
> 'start')
> su mysql -c "exec /usr/local/mysql/libexec/mysqld" &
> ;;
>
> 'stop')
> ps -ef | grep mysqld | grep -v grep | awk '{print $2}' | xargs
> kill -9
> ;;
>
> *)
> echo "Usage: $0 { start | stop }"
> exit 1
> ;;
> esac
>
>
> **The pid file is definately there after mysql is started.
>
> Here is the output from running monit in verbose mode:
>
> Runtime constants:
> Control file = /etc/monitrc
> Log file = /var/log/monit
> Pid file = /var/run/monit.pid
> Debug = True
> Log = True
> Use syslog = False
> Is Daemon = False
> Use process engine = True
> Poll time = 0 seconds
> Mail server = (not defined)
> Mail from = (not defined)
> Mail subject = (not defined)
> Mail message = (not defined)
> Start monit httpd = False
>
> The process list contains the following entries:
>
> Process Name = mysql
> Group = (not defined)
> Pid file = /usr/local/mysql/var/sun07.pid
> Monitoring mode = active
> Start program = /etc/init.d/mysql
> Stop program = /etc/init.d/mysql
> Host:Port = (not defined)
> Resource Limits = (not defined)
> Every = (not defined)
> Timeout = Do timeout if 3 restart within 3 cycles
> Alert mail to = address@hidden
> alert from = (default)
> alert subject = (default)
> alert message = (default)
> alert on timeout = no
> alert on restart = yes
> alert on checksum = no
> alert on resource = no
> alert on stop = no
> alert on timestamp = no
> Alert mail to = address@hidden
> alert from = (default)
> alert subject = (default)
> alert message = (default)
> alert on timeout = yes
> alert on restart = no
> alert on checksum = no
> alert on resource = no
> alert on stop = no
> alert on timestamp = no
>
> -------------------------------------------------------------------------------
> start: (mysql) /etc/init.d/mysql
> monit: Warning process 'mysql' was not started
> Monitoring enabled -- process mysql
> Restart notification is sent to address@hidden
>
> Thanks,
> Shannon
>
> address@hidden wrote:
> > ------------------------------
> >
> > Message: 3
> > Date: Thu, 28 Aug 2003 13:12:41 +0200
> > From: Martin Pala <address@hidden>
> > Subject: Re: PID file being removed
> > To: This is the general mailing list for monit
> > <address@hidden>
> > Message-ID: <address@hidden>
> > Content-Type: text/plain; charset=ISO-8859-2; format=flowed
> >
> > Hi,
> >
> > the problem is probably caused in your mysql startup script, which
> > probably removes it. Monit is not able to remove the monitored service's
> > pidfile (until instructed to do so via exec statement which is not this
> > case).
> >
> > Please:
> >
> > 1.) attach your mysql rc script - we can figure out where and why it
> > removed the pidfile.
> >
> > 2.) optionaly trace the process as described in FAQ.txt distributed with
> > monit, it could help to see the actions/environment which preceded to
> > start method execution and the cause why monit decided to start mysql
> > though it was running before monit started (which is not normal - there
> > must be some reason for it - it works in 3.2 well).
> >
> > 3.) run monit in verbose mode ('-v' command line option)
> >
> >
> > If it is problem for you to do any of above hints, please send kindly
> > just some of these informations.
> >
> >
> > Thanks for feedback :)
> > Martin
>
> > Message: 2
> > Date: Fri, 22 Aug 2003 07:49:19 -0400
> > From: "Shannon E. Reall" <address@hidden>
> > Subject: PID file being removed
> > To: address@hidden
> > Message-ID: <address@hidden>
> > Content-Type: text/plain; charset=us-ascii; format=flowed
> >
> > I recently upgraded to 3.2 and am now having a problem monitoring
> > mysqld. Here is that portion of the conf file:
> >
> > check mysql with pidfile /usr/local/mysql/var/sun07.pid
> > timeout(3,3)
> > start program = "/etc/init.d/mysql start"
> > stop program = "/etc/init.d/mysql stop"
> > alert address@hidden on { timeout }
> > alert address@hidden on { restart }
> >
> > The pid file exists before I start monit but then it disappears. Here
> > is what I did for testing:
> >
> > address@hidden:/# ps -ef |grep mysql
> > mysql 455 1 0 18:05:55 ? 0:01
> > /usr/local/mysql/libexec/mysqld
> > root 23227 19786 0 07:47:11 pts/3 0:00 grep mysql
> >
> > address@hidden:/# echo 455 > /usr/local/mysql/var/sun07.pid
> >
> > address@hidden:/# ls -l /usr/local/mysql/var/sun07.pid
> > -rw-r--r-- 1 root other 4 Aug 22 07:47
> > /usr/local/mysql/var/sun07.pid
> >
> > address@hidden:/# /usr/local/bin/monit -d 60
> > Starting monit daemon
> >
> > address@hidden:/# tail /var/log/monit
> > [EDT Aug 22 07:37:20] Starting monit daemon
> > [EDT Aug 22 07:39:44] Stopping monit HTTP server
> > [EDT Aug 22 07:39:44] monit daemon with pid [22123] killed
> > [EDT Aug 22 07:43:28] Starting monit daemon
> > [EDT Aug 22 07:43:28] start: (mysql) /etc/init.d/mysql
> > [EDT Aug 22 07:44:28] monit: Warning process 'mysql' was not started
> > [EDT Aug 22 07:44:29] Stopping monit HTTP server
> > [EDT Aug 22 07:44:29] monit daemon with pid [23002] killed
> > [EDT Aug 22 07:47:47] Starting monit daemon
> > [EDT Aug 22 07:47:47] start: (mysql) /etc/init.d/mysql
> > [EDT Aug 22 07:48:47] monit: Warning process 'mysql' was not started
> >
> > address@hidden:/# ls -l /usr/local/mysql/var/sun07.pid
> > /usr/local/mysql/var/sun07.pid: No such file or directory
> >
> > Am I missing something? Thanks for any help you can provide.
> >
> >
>
> --
> Shannon
>
>
> ______________________________________________________________________
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--
Rory Toma address@hidden
VP of Run Level 9 http://www.trs80.net
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