[ClusterLabs] epic fail
admin at feldhost.cz
Mon Jul 24 11:13:15 EDT 2017
Hmm, so when you know, that it happens also when putting node standy, them why you run yum update on live cluster, it must be clear that node will be fenced.
Would you post your pacemaker config? + some logs?
S pozdravem Kristián Feldsam
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> On 24 Jul 2017, at 17:04, Dimitri Maziuk <dmaziuk at bmrb.wisc.edu> wrote:
> On 07/24/2017 09:40 AM, Jan Pokorný wrote:
>> Would there be an interest, though? And would that be meaningful?
> IMO the only reason to put a node in standby is if you want to reboot
> the active node with no service interruption. For anything else,
> including a reboot with service interruption (during maintenance
> window), it's a no.
> This is akin to "your mouse has moved, windows needs to be restarted".
> Except the mouse thing is a joke whereas those "standby" clowns appear
> to be serious.
> With this particular failure, something in the Redhat patched kernel
> (NFS?) does not release the DRBD filesystem. It happens when I put the
> node in standby as well, the only difference is not messing up the RPM
> database which isn't that hard to fix. Since I have several centos 6 +
> DRBD + NFS + heartbeat R1 pairs running happily for years, I have to
> conclude that centos 7 is simply the wrong tool for this particular job.
> Dimitri Maziuk
> BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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