CMAN is a Corosync plugin that monitors the names and number of active cluster nodes in order to deliver membership and quorum information to clients.
Questions tagged [cman]
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pacemaker supervisord and resource groups
For environment and config pls check
HA pacemaker monitor_5000 on zabserver-a 'not running' (7): call=53, status=complete, last-rc-change='Mon Jul 13 07:51:32 2015', queued=0ms, exec=0ms
I am now adding a service which is controlled by…
John Test
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pcs status error httpd_monitor_5000 on server 'not running' (7):
Error Message
Failed actions:
httpd_monitor_5000 on abc-zabserver-b 'not running' (7): call=65, status=complete, last-rc-change='Wed Jul 15 21:44:43 2015', queued=0ms, exec=8ms
pcs status
[root@abc-zabserver-b ~]# pcs status
Cluster name:…
John Test
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redhat cluster failover not working (corosync [TOTEM ] Retransmit List)
I'm using following:
[root@kpdbm01 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.5 (Santiago)
[root@kpdbm01 ~]# uname -a
Linux kpdbm01 2.6.32-431.20.3.el6.x86_64 #1 SMP Fri Jun 6 18:30:54 EDT 2014 x86_64 x86_64 x86_64…
alexus
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CMAN: using SBD (Storage Based Death) and watchdog as STONITH
I'm building up a 2-node cluster based on CMAN + Pacemaker cluster stack, but I have no hardware STONITH devices. However both nodes are connected to a shared storage via iSCSI and I would like to use this for fencing with SBD.
SBD is supported by…
Pavel A
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OCFS2/GFS2 dlm_join_lockspace no fence domain
Ripping my hair out on a new Pacemaker/cman/(OCFS2|GFS) config. I can't use the Pacemaker integration with OCFS2, since the Fedora team, in their wisdom, decided to remove the .pcmk.
Supposedly, I don't need to configure fencing in…
phresus
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CLVM with shared storage not available to all nodes in the cluster
If you are running a 3 or more node cluster with cman/corosync and you have some sort of shared block storage (SAN) connected only to some nodes in the cluster how can you enable CLVM on that storage device?
In my example I'm running a 3 node…
NStorm
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HA pacemaker monitor_5000 on zabserver-a 'not running' (7): call=53, status=complete, last-rc-change='Mon Jul 13 07:51:32 2015', queued=0ms, exec=0ms
I have a Zabbix active/passive cluster using pacemaker and cman.
However, I am seeing the following in "pcs status" and during failover the zabbix-server service is not coming up. The floating IP moves over just fine though.
OS CentOS 6.6
Zabbix…
John Test
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Zabbix web interface says Zabbix server is offline when failing over to passive node
Two Zabbix 2.4 servers using CentOS 6.6 with an external MySQL DB, both servers are configured to connect to this DB when they are running.
I followed a combination of Zabbit High Availability guide and the Quickstart from Clusterlabs. I think I…
John Test
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How can CMAN restart after a network failure
I try to configure a 3-nodes HA cluster with pacemaker/cman on centos 6.5.
STONITH is disabled (pcs property set stonith-enabled=false).
When I simulate a network issue (iptables -A INPUT -s $OTHER_NODES_IP -j DROP),
the master resource is moved to…
rmillet
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Advantages and use of cman cluster
Can anyone tell me what are the advantages of cman cluster and what is a node meant while configuring a server.
Does a node identify a server? or how is it?
I want to configure a cman cluster with two nodes. can anyone tell me how can i configure it…
Nitin Francis
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