28.11.2017 13:01, Jan Pokorný пишет: > On 27/11/17 17:43 +0300, Andrei Borzenkov wrote: >> Отправлено с iPhone >> >>> 27 нояб. 2017 г., в 14:36, Ferenc Wágner <wf...@niif.hu> написал(а): >>> >>> Andrei Borzenkov <arvidj...@gmail.com> writes: >>> >>>> 25.11.2017 10:05, Andrei Borzenkov пишет: >>>> >>>>> In one of guides suggested procedure to simulate split brain was to kill >>>>> corosync process. It actually worked on one cluster, but on another >>>>> corosync process was restarted after being killed without cluster >>>>> noticing anything. Except after several attempts pacemaker died with >>>>> stopping resources ... :) >>>>> >>>>> This is SLES12 SP2; I do not see any Restart in service definition so it >>>>> probably not systemd. >>>>> >>>> FTR - it was not corosync, but pacemakker; its unit file specifies >>>> RestartOn=error so killing corosync caused pacemaker to fail and be >>>> restarted by systemd. >>> >>> And starting corosync via a Requires dependency? >> >> Exactly. > > From my testing it looks like we should change > "Requires=corosync.service" to "BindsTo=corosync.service" > in pacemaker.service. > > Could you give it a try? >
I'm not sure what is expected outcome, but pacemaker.service is still restarted (due to Restart=on-failure). If intention is to unconditionally stop it when corosync dies, pacemaker should probably exit with unique code and unit files have RestartPreventExitStatus set to it.
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