Hi Jehan-Guillaume, Does this means watchdog will serf-terminate the machine when the crm daemon is frozen?
Regards, Shermal Fernando -----Original Message----- From: Jehan-Guillaume de Rorthais [mailto:j...@dalibo.com] Sent: Thursday, September 08, 2016 12:52 PM To: Digimer Cc: Cluster Labs - All topics related to open-source clustering welcomed Subject: Re: [ClusterLabs] Antw: Re: When the DC crmd is frozen, cluster decisions are delayed infinitely On Thu, 8 Sep 2016 15:55:50 +0900 Digimer <li...@alteeve.ca> wrote: > On 08/09/16 03:47 PM, Ulrich Windl wrote: > >>>> Shermal Fernando <sherma...@millenniumit.com> schrieb am > >>>> 08.09.2016 um > >>>> 06:41 in > > Nachricht > > <8ce6e8d87f896546b9c65ed80d30a4336578c...@lg-spmb-mbx02.lseg.stockex.local>: > >> The whole cluster will fail if the DC (crm daemon) is frozen due to > >> CPU starvation or hanging while trying to perform a IO operation. > >> Please share some thoughts on this issue. > > > > What is "the whole cluster will fail"? If the DC times out, some > > recovery will take place. > > Yup. The starved node should be declared lost by corosync, the > remaining nodes reform and if they're still quorate, the hung node > should be fenced. Recovery occur and life goes on. +1 And fencing might either come from outside, or just from the server itself using watchdog. -- Jehan-Guillaume (ioguix) de Rorthais Dalibo _______________________________________________ Users mailing list: Users@clusterlabs.org http://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 This e-mail transmission (inclusive of any attachments) is strictly confidential and intended solely for the ordinary user of the e-mail address to which it was addressed. It may contain legally privileged and/or CONFIDENTIAL information. The unauthorized use, disclosure, distribution printing and/or copying of this e-mail or any information it contains is prohibited and could, in certain circumstances, constitute an offence. If you have received this e-mail in error or are not an intended recipient please inform the sender of the email and MillenniumIT immediately by return e-mail or telephone (+94-11) 2416000. We advise that in keeping with good computing practice, the recipient of this e-mail should ensure that it is virus free. We do not accept responsibility for any virus that may be transferred by way of this e-mail. E-mail may be susceptible to data corruption, interception and unauthorized amendment, and we do not accept liability for any such corruption, interception or amen dment or any consequences thereof. www.millenniumit.com _______________________________________________ Users mailing list: Users@clusterlabs.org http://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
