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Re: Monitoring multiple apps running under a non privileged user

From: Tim Uckun
Subject: Re: Monitoring multiple apps running under a non privileged user
Date: Fri, 3 Oct 2014 01:01:55 +1300

Thanks a lot. I appreciate the detailed answers.

On Thu, Oct 2, 2014 at 9:45 PM, Martin Pala <address@hidden> wrote:
If you run Monit as root, you can set the uid/gid for exec actions and start/stop/restart programs ... Monit will then execute them as the specified user, not as root. If you want to run the tests as specific user too, you have to start Monit as that user. You can also run multiple Monit instances on the same machine (different users - different monits) - in such case you need to customize monit files locations using "set pidfile", "set statefile", "set idfile" statements).

On 01 Oct 2014, at 22:53, Tim Uckun <address@hidden> wrote:

Can monit be instructed to run the config file as a specified user?

On Wed, Oct 1, 2014 at 10:09 PM, Martin Pala <address@hidden> wrote:
You can use the "include" statement:

        include /usr/local/monit.d/*

If you'll split the configuration for the deployed processes to one file per process, you'll be to add/remove these include files automatically. You can also add check for the "include" directory timestamp ... each time you add/remove file from the directory, its mtime is updated, which you can use to reload monit automatically:

        check directory monit_includes with path /usr/local/monit.d/
                if changed timestamp then exec "/sbin/restart monit"

Note that if you'll have syntax error in new include file, monit restart attempt will kill it, as it will hit the syntax error => in the above exec action it'll be safer to use some simple script which will restart monit conditionally - check the syntax first (using "monit -t") and restart only if there are no problems, otherwise keep running and/or fire alarm.


On 01 Oct 2014, at 00:51, Tim Uckun <address@hidden> wrote:

> I have the following scenario.
> We have multiple web apps owned by the deploy user  and running as the web user.  I would like monit to check each app directory for a monit.conf file (app/config/monit.conf) and process it as the deploy user.  When a new app is deployed I would like monit to notice this and run the config file. When an app is removed I would like monit to notice this and kill the processes started by that app (this is probably too much to ask).
> Obviously running monit via the users cron would do this but I am wondering if it's possible to do this using the daemon mode.
> Cheers.
> --
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