Re: Best practice for dealing with missing pidfile while service is running

[Martin Pala]

Hello,

your solution is correct. Alternatively you can also use pattern based process 
check (no need for pidfile).

Regards,
Martin


> On 04 Feb 2016, at 20:11, Bill Durant <address@hidden> wrote:
> 
> Greetings:
> 
> Is there a best practice for dealing with a situation when a service's
> PID file is deleted by something other than the service itself?
> 
> For example, given the following monit rule:
> 
> check process ntpd with pidfile /var/run/ntpd.pid
> start program "/etc/init.d/ntpd start"
> stop program "/etc/init.d/ntpd stop"
> 
> If /var/run/ntpd.pid is deleted by the root user from the command line,
> then monit will start it again resulting in two instances of ntpd.
> 
> A workaround that I discovered is to tell monit to 'restart' ntpd
> instead of 'starting' it as follows:
> 
> check process ntpd with pidfile /var/run/ntpd.pid
> start program "/etc/init.d/ntpd restart"
> stop program "/etc/init.d/ntpd stop"
> 
> Is this a common practice or is there a better way?
> 
> Thanks!
> 
> Bill
> 
> 
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