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monitoring - Monit issues with mysql Ubuntu server 12.04



I've installed Monit on Ubuntu server 12.04 but Im having issues getting mysql monitoring to work at all. Here is what I have done so far.



#/etc/default/monit
startup=1


#/etc/mysql/my.cnf
pid-file        = /var/run/mysqld/mysqld.pid

#/etc/monit/monitrc
set daemon 60
check process mysql with pidfile /var/run/mysqld/mysqld.pid
group mysql
start program = "/etc/init.d/mysql start" with timeout 30 seconds
stop program = "/etc/init.d/mysql stop"

if failed host 127.0.0.1 port 3306 then restart
if 5 restarts within 5 cycles then timeout


The mysqld.pid file is being created as expected but monit cannot access it. Here are the permissions for mysqld.pid



-rw-rw---- 1 mysql mysql 6 2014-06-02 11:36 mysqld.pid


Here is the status for monit




#monit status
Process 'mysql'
status                            not monitored
monitoring status                 not monitored
data collected                    Mon Jun  2 23:49:37 2014


And here are the errors Im seeing in the monit log




Jun  2 23:47:07 MySQL-Dev monit[13034]: 'mysql' process is not running
Jun  2 23:47:07 MySQL-Dev monit[13034]: 'mysql' trying to restart  
Jun  2 23:47:07 MySQL-Dev monit[13034]: monit: Error opening the pidfile '/var/run/mysqld/mysqld.pid' -- Permission denied
Jun  2 23:47:07 MySQL-Dev monit[13034]: monit: Error opening the pidfile '/var/run/mysqld/mysqld.pid' -- Permission denied
Jun  2 23:47:07 MySQL-Dev monit[13034]: 'mysql' start: /etc/init.d/mysql
Jun  2 23:47:07 MySQL-Dev monit[13034]: monit: Error opening the pidfile '/var/run/mysqld/mysqld.pid' -- Permission denied
Jun  2 23:47:37 MySQL-Dev monit[13034]: last message repeated 31 times
Jun  2 23:47:37 MySQL-Dev monit[13034]: 'mysql' failed to start
Jun  2 23:48:37 MySQL-Dev monit[13034]: 'mysql' service timed out and will not be checked anymore



Im not sure what to do at this point and I have not been able to find anything online that addresses my specific issue.


Answer



If you run monit as root, it should be able to access this pid file. Please check if your not running monit with another user.



# ps -eaf | grep monit
root     XXXX     1  0 Jun20 ?        00:00:08 /usr/sbin/monit -c /etc/monit/monitrc -s /var/lib/monit/monit.state

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