Re: Handling load of servers during backups

[Eduard Kracmar]

Hello again.

I tried to configure monit using "not every", but won't help, today
again lot of resource limit reached emails in my mailbox.

this is one server, got emails at 5:56, 6:20 etc.

check system mimiteh.dannax.sk
    not every "0-2 * * * *"
    not every "5-6 * * * *"
    if loadavg (1min) > 10 then alert
    if loadavg (5min) > 6 then alert
    if memory usage > 80% then alert
    if swap usage > 25% then alert
    if cpu usage (user) > 80% then alert
    if cpu usage (system) > 35% then alert
    if cpu usage (wait) > 25% then alert

another server, got emails at 5:13 etc.

check system sajko.dannax.sk
    not every "5-6 * * * *"
    if loadavg (1min) > 4 then alert
    if loadavg (5min) > 2 then alert
    if memory usage > 75% then alert
    if swap usage > 25% then alert
    if cpu usage (user) > 70% then alert
    if cpu usage (system) > 30% then alert
    if cpu usage (wait) > 20% then alert

What am I doing wrong ?



PS: I'm getting digest and it's complicated to compose email from it
(change subject etc.). Can't be mailing list configured to send me
every message right away ?


On Mon, Nov 7, 2011 at 18:01,  <address@hidden> wrote:
> Hello,
>
> there are two ways:
>
> 1.) you can suppress the monitoring of the service which generates the system 
> load alerts using the cron syntax like this:
>
> --8<--
> check system mymachine
>    not every "0-1 * * * *"
>    if cpu usage > 80% then alert
> --8<--
>
> Notes:
> - the cron syntax support for the "not every" statement requires monit 5.3 or 
> newer
> - the above example skips the system check every day from 0:00 to 1:59 for 
> the service entry "mymachine" ? the other check will be performed normally => 
> you can suppress the monitoring on per-service basis
>
>
> 2.) or you can disable/enable the monitoring of that service when the backup 
> starts using monit CLI => put the following to the backup script when the 
> backup starts:
> --8<--
>   /usr/bin/monit unmonitor mymachine
> --8<--
>
> and this when the backup is finished:
> --8<--
>   /usr/bin/monit monitor mymachine
> --8<--
>
> Notes:
> - this solution works with all monit versions
>
>
> Best regards,
> Martin



-- 
s pozdravom Eduard Kracmar

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