[ClusterLabs] cronjobs only on active node

Jan Pokorný jpokorny at redhat.com
Tue Jul 10 08:27:36 EDT 2018

> "Stefan K" <Shadow_7 at gmx.net> schrieb am 10.07.2018 um 11:49 in Nachricht
> <trinity-4d0ebc7c-170c-4c10-b4b9-3102ccf74949-1531216186256 at 3c-app-gmx-bs41>:
>> is it somehow possible to have a cronjob active only on the active node?
On 10/07/18 12:18 +0200, Ulrich Windl wrote:
> I had written some script to patch a crontab in HP-UX to enable and
> disable specific entries. For Linux the ISC cron is more flexible,
> and I write an RA to enable or disable specific cron entries.  So it
> has to do nothing with "actve nodes", but it can be started and
> stopped as a usual resource...
>   <longdesc lang="en">OCF Resource Agent managing crontabs for ISC cron
> This RA manages crontabs for the ISC cron daemon by managing links to specific
> crontabs in /etc/cron.d.
> The "start" method adds a symbolic link for the specified crontab file to
> /etc/cron.d, while the "stop" method removes that link again.
> The "monitor" method tests if a link for the specified crontab exists in
> /etc/cron.d.
> </longdesc>

See also general purpose ocf:heartbeat:symlink agent:

(+ pacemaker handles systemd timer units as of 2.0.0 & upcoming 1.1.19)

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