Re: [ClusterLabs] When the DC crmd is frozen, cluster decisions are delayed infinitely

2016-09-07 Thread Shermal Fernando
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. Regards, Shermal Fernando -Original Message- From: Klaus Wenninger [mailto:kwenn...@redhat.com] Sent:

Re: [ClusterLabs] DRBD failover in Pacemaker

2016-09-07 Thread Ken Gaillot
On 09/06/2016 02:04 PM, Devin Ortner wrote: > I have a 2-node cluster running CentOS 6.8 and Pacemaker with DRBD. I have > been using the "Clusters from Scratch" documentation to create my cluster and > I am running into a problem where DRBD is not failing over to the other node > when one goes

[ClusterLabs] (ELI5) Physical disk XXXXXXX does not have the inquiry data (SCSI page 83h VPD descriptor) that is required by failover clustering

2016-09-07 Thread Jason A Ramsey
Anyone that follows this mailing list at all has probably noticed that I’m creating a 2-node HA iSCSI Target on RHEL 6 using Pacemaker/Corosync (and CMAN, I guess) and the available tgt scsi tools to use as shared file system for some Windows Server Failover Cluster nodes. After a great deal of

Re: [ClusterLabs] DRBD failover in Pacemaker

2016-09-07 Thread Greg Woods
On Tue, Sep 6, 2016 at 1:04 PM, Devin Ortner < devin.ort...@gtshq.onmicrosoft.com> wrote: > Master/Slave Set: ClusterDBclone [ClusterDB] > Masters: [ node1 ] > Slaves: [ node2 ] > ClusterFS (ocf::heartbeat:Filesystem):Started node1 > As Digimer said, you really need fencing

Re: [ClusterLabs] DRBD failover in Pacemaker

2016-09-07 Thread Dmitri Maziuk
On 2016-09-06 14:04, Devin Ortner wrote: I have a 2-node cluster running CentOS 6.8 and Pacemaker with DRBD. I have been using the "Clusters from Scratch" documentation to create my cluster and I am running into a problem where DRBD is not failing over to the other node when one goes down. I

Re: [ClusterLabs] DRBD failover in Pacemaker

2016-09-07 Thread Digimer
> no-quorum-policy: ignore > stonith-enabled: false You must have fencing configured. CentOS 6 uses pacemaker with the cman plugin. So setup cman (cluster.conf) to use the fence_pcmk passthrough agent, then setup proper stonith in pacemaker (and test that it works). Finally, tell DRBD to use

[ClusterLabs] DRBD failover in Pacemaker

2016-09-07 Thread Devin Ortner
I have a 2-node cluster running CentOS 6.8 and Pacemaker with DRBD. I have been using the "Clusters from Scratch" documentation to create my cluster and I am running into a problem where DRBD is not failing over to the other node when one goes down. Here is my "pcs status" prior to when it is