Actually,
I just found that answer and adding:
---------------------------------------------------------------------------------
disk {
fencing resource-only;
}
handlers {
fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
after-resync-target "/usr/lib/drbd/crm-unfence-peer.sh";
}
---------------------------------------------------------------------------------
On both server DRBD config, fixed the issue.
I now have to configure STONITH in Pacemaker.
Thanx !
Le 2013-06-25 10:22, Digimer a écrit :
Fencing (stonith) would prevent split-brains from happening. In chapter
9 of Clusters from Scratch on the pacemaker website covers how to
configure fencing. Once setup, configure DRBD to use
'resource-and-stonith' and then use the 'crm-fence-peer.sh' fence
handler to hook DRBD into pacemaker's fencing.
This is the _only_ reliable way to avoid split-brains.
Cheers
On 06/25/2013 09:00 AM, Jonathan-Marc Lapointe wrote:
Hi dear list members !
I have a procluster project I'm working on right now and I have a little
problem I'd like you to help me with.
I'm configuring Pacemaker and Corosync.
But when pacemaker starts DRBD, it detects a split brain and the status is:
drbd driver loaded OK; device status:
version: 8.3.13 (api:88/proto:86-96)
srcversion: C0F510A918B92928FB51EE3
m:res cs ro ds p mounted
fstype
0:r0 StandAlone Primary/Unknown UpToDate/DUnknown r-----
On both servers.
But If I start it using the standard init script, it's all fine.
Here are my configs:
DRBD:
---------------------------------------------------------------------------------
resource r0 {
syncer {
rate 1000M;
}
startup {
wfc-timeout 15;
degr-wfc-timeout 60;
become-primary-on both;
}
net {
allow-two-primaries;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;
cram-hmac-alg sha1;
shared-secret "secret";
}
on web1dev {
device /dev/drbd0;
disk /dev/mapper/groupe1-data;
address 192.168.77.212:7789;
meta-disk internal;
}
on web2dev {
device /dev/drbd0;
disk /dev/mapper/groupe1-data;
address 192.168.77.213:7789;
meta-disk internal;
}
}
---------------------------------------------------------------------------------
And Pacemaker:
---------------------------------------------------------------------------------
primitive p_drbd ocf:linbit:drbd \
params drbd_resource="r0" \
op start interval="0" timeout="240s" \
op promote interval="0" timeout="90s" \
op demote interval="0" timeout="90s" \
op notify interval="0" timeout="90s" \
op stop interval="0" timeout="100s" \
op monitor interval="20s" role="Slave" timeout="20s" \
op monitor interval="10s" role="Master" timeout="20s"
ms ms_drbd p_drbd \
meta master-max="2" clone-max="2" notify="true" is-managed="true"
---------------------------------------------------------------------------------
What could be possibly wrong ?
CCDMD 20 ans !
Jonathan-Marc Lapointe
Technicien en informatique,
Administrateur système,
Administrateur réseau
Centre collégial de développement de matériel didactique
6220, rue Sherbrooke Est, bureau 404
Montréal (Québec) H1N 1C1
514) 864-8443
www.ccdmd.qc.ca <http://www.ccdmd.qc.ca>
[email protected] <mailto:[email protected]>
Skype: jmlccdmd
_______________________________________________
drbd-user mailing list
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Jonathan-Marc Lapointe
Technicien en informatique,
Administrateur système,
Administrateur réseau
Centre collégial de développement de matériel didactique
6220, rue Sherbrooke Est, bureau 404
Montréal (Québec) H1N 1C1
514) 864-8443
www.ccdmd.qc.ca
[email protected]
Skype: jmlccdmd
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