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.

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Is it possible to run CMAN without configfs?

I run a custom 3.18.x kernel that does not have configfs enabled. Is it possible to run CMAN cluster management without configfs? If necessary it would be much easier for me to rebuild CMAN than it ...
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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, ...
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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 ...
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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 ...
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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 ...
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456 views

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 ...
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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 ...
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Advantages and use of cman cluster [closed]

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 ...
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677 views

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 ...
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623 views

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 ...