On Wednesday, 20 October 2021, 18:08:50 BST, Andrei Borzenkov
wrote:
It depends on what hardware you have. For physical systems IPMI may be
available or managed power outlets; both allow cutting power to another
node over LAN.
For virtual machines you may use fencing agent that contacts
On 20.10.2021 17:54, Ian Diddams wrote:
>
>
> On Wednesday, 20 October 2021, 11:15:48 BST, Andrei Borzenkov
> wrote:
>
>
>> You cannot resolve split brain without fencing. This is as simple as
>> that. Your pacemaker configuration (from another mail) shows
>
>> pcs -f clust_cfg prop
On Wednesday, 20 October 2021, 11:15:48 BST, Andrei Borzenkov
wrote:
>You cannot resolve split brain without fencing. This is as simple as
>that. Your pacemaker configuration (from another mail) shows
> pcs -f clust_cfg property set stonith-enabled=false
> pcs -f clust_cfg property
On Wed, Oct 20, 2021 at 11:54 AM Ian Diddams via Users
wrote:
>
> So - system logs recently show this
>
> ESTRELA
> Oct 18th
> Oct 18 04:04:28 wp-vldyn-estrela kernel: [584651.491139] drbd mysql01/0
> drbd0: Split-Brain detected, 1 primaries, automatically solved. Sync from
> peer node
> Oct 18
I've been testing an implementation of a HA mysql cluster for a few months now.
I came to this project with no preior knoweldge of what was copncerned/needed
and have learned orgainscally via various online how-tos and web sites which
many cases wrere slightly out-of-date to missing large chunks
On 2018-01-19 01:36 PM, Ken Gaillot wrote:
> On Tue, 2017-12-12 at 15:30 +0200, Антон Сацкий wrote:
>> Hi list
>> Need your help.
>> Got 2 servers use Pacemaker Corosync Drbd
>>
>> [root@voipserver ~]# pcs config
>> Cluster Name: ClusterKrusher
>> Corosync Nodes:
>> voipserver.primary voipserve
On Tue, 2017-12-12 at 15:30 +0200, Антон Сацкий wrote:
> Hi list
> Need your help.
> Got 2 servers use Pacemaker Corosync Drbd
>
> [root@voipserver ~]# pcs config
> Cluster Name: ClusterKrusher
> Corosync Nodes:
> voipserver.primary voipserver.backup
> Pacemaker Nodes:
> voipserver.backup voi
Hi list
Need your help.
Got 2 servers use Pacemaker Corosync Drbd
[root@voipserver ~]# pcs config
Cluster Name: ClusterKrusher
Corosync Nodes:
voipserver.primary voipserver.backup
Pacemaker Nodes:
voipserver.backup voipserver.primary
Resources:
Resource: ClusterIP (class=ocf provider=heartbe
I have active-active NSF on gfs2 on dual-primary DRBD. As for stonith
I have no reason to think that it is not working because when I
poweroff one node, the second node can bring it up automatically. Also
I have situation where fence shut down or reboot another node. It
seems than it is working wel
On 7/14/2017 3:57 AM, ArekW wrote:
Hi, I have stonith run and tested. The problem was that there is
mistake in drbd documentation. The 'fencing' belongs to net (not
disk).
If you are running NFS on top of a dual-primary DRBD with some sort of a
cluster filesystem, I'd think *that* is your prob
Hi, I have stonith run and tested. The problem was that there is
mistake in drbd documentation. The 'fencing' belongs to net (not
disk). I also try to use more handlers
handlers {
fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
after-resync-target "/usr/lib/drbd/crm-unfence-peer.sh";
spl
On 2017-07-12 07:19 AM, ArekW wrote:
> Thanks for quick respond. I've found the fencing docs on Linbit and try
> to follow but I got an error regarding "disk" section:
>
> drbd.d/global_common.conf:57: Parse error: 'resync-rate | c-plan-ahead |
> c-delay-target | c-fill-target | c-max-rate | c-min
Thanks for quick respond. I've found the fencing docs on Linbit and try to
follow but I got an error regarding "disk" section:
drbd.d/global_common.conf:57: Parse error: 'resync-rate | c-plan-ahead |
c-delay-target | c-fill-target | c-max-rate | c-min-rate | bitmap' expected,
but got 'fenc
On 7/12/2017 4:33 AM, ArekW wrote:
Hi,
Can in be fixed that the drbd is entering split brain after cluster
node recovery?
I always configure "after-sb*" handlers and drbd-level fence but I never
ran it with allow-two-primaries. You'll have read the fine manual on how
that works in a dual-prim
you need to configure cluster fencing and drbd fencing handler, in this
way, the cluster can recevory without manual intervention.
2017-07-12 11:33 GMT+02:00 ArekW :
> Hi,
> Can in be fixed that the drbd is entering split brain after cluster
> node recovery? After few tests I saw drbd recovered b
Hi,
Can in be fixed that the drbd is entering split brain after cluster
node recovery? After few tests I saw drbd recovered but in most
situations (9/10) it didn't sync.
1. When a node is put to standby and than unstandby everything is
working OK. The drbd is syncing and go to primary mode.
2. Wh
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