Puppet users - May 2013 - Using Puppet to trigger a script when error occurs on log file

Hello everyone,
I''m using Puppet on my Ubuntu servers and I would like it to restart a 
process whenever an error occurs while running an application. The error 
can be detected looking at the logs of the application of course, but I 
don''t want to parse the log file to detect it. Is there a way using
Puppet,
to trigger a script when something happens in a log file without having to 
parse it ? 

Many thanks for your support,


Best,

Nicola

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This is not something puppet is intended to do.

For one, puppet makes periodic runs and does not respond to changes on the 
system in realtime. So best case, your app would get restarted within 30 
minutes (or whatever your runinterval is) of an error occuring, but not 
immediately upon that error occurring.

Second, puppet can restart a service because another resource it manages 
changed (think config files), but it doesn''t have a mechanism in the 
service provider to restart based on other conditions.

Puppet is very good about setting up an environment and maintaining its 
state, but it''s not an application monitoring/orchestration tool.

On Tuesday, May 7, 2013 9:19:04 AM UTC-6, Nicola Zanetti
wrote:
>
> Hello everyone,
> I''m using Puppet on my Ubuntu servers and I would like it to
restart a
> process whenever an error occurs while running an application. The error 
> can be detected looking at the logs of the application of course, but I 
> don''t want to parse the log file to detect it. Is there a way
using Puppet,
> to trigger a script when something happens in a log file without having to 
> parse it ? 
>
> Many thanks for your support,
>
>
> Best,
>
> Nicola
>
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You shouldn''t search support for this in puppet but in something like
monit, upstart or nagios handlers. Puppet isn''t suitable for this task
although it might be possible it will be hacky.


-- 
Nikola

On Tue, May 07, 2013 at 08:19:04AM -0700, Nicola Zanetti
wrote:
> Hello everyone,
> I''m using Puppet on my Ubuntu servers and I would like it to
restart a
> process whenever an error occurs while running an application. The error 
> can be detected looking at the logs of the application of course, but I 
> don''t want to parse the log file to detect it. Is there a way
using Puppet,
> to trigger a script when something happens in a log file without having to 
> parse it ? 
> 
> Many thanks for your support,
> 
> 
> Best,
> 
> Nicola
> 
> -- 
> You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
email to puppet-users+unsubscribe@googlegroups.com.
> To post to this group, send email to puppet-users@googlegroups.com.
> Visit this group at http://groups.google.com/group/puppet-users?hl=en.
> For more options, visit https://groups.google.com/groups/opt_out.
> 
> 
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