On Tue, 2019-01-08 at 15:27 +0800, T. Ladd Omar wrote: > Hey guys. I have a question, if the Pacemaker has an event-notify > interface which is realized by push&pull. Recently I want to do > something extra using other process when the resources being started > or deleted. So I need a way to monitor the resources events. > ClusterMon and alerts both use external-scripts for extra actions, > but in my situation, the specific process might have not being > started. I hope pacemaker itself could store the old events and flush > them for updating until the specific process starts and subscribe to > Pacemaker, then pull all the old events. Also the Pacemaker could > push to it when new events come.
I would use alerts with alert_file.sh (with custom modifications if desired) to record them to a file, then have your process look at that. (Tip: if you only care about events since the last boot, put the file in /run so you don't have to worry about cleaning it up.) > Above is all what I thought, maybe it is not accurate. Anyway, I need > some advice. > By the way, there is no deletion notify in ClusterMon and alerts, > right ? Correct, configuration changes are not alerted. The only way I know of to get configuration changes is to use the C API for update/replace callbacks. It would also be possible to poll the configuration at intervals and use crm_diff to compare them, but that's probably not any easier. -- Ken Gaillot <kgail...@redhat.com> _______________________________________________ Users mailing list: Users@clusterlabs.org https://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
