The subject says 6.5, so we need Thanachit to clarify.
If EL7, then no, there is no cman. You can use pcsd to form the cluster
initially, but also, that version should not attempt to start cman at
all, so I am still thinking it is RHEL/CentOS 6.
On 16/06/14 12:20 PM, emmanuel segura wrote:
From the previous output i seen this "Version: 1.1.10-5.el7-9abe687",
so my question is "cman is used on redhat7?"
2014-06-16 18:10 GMT+02:00 Digimer <li...@alteeve.ca>:
You need to setup a skeleton cluster.conf file. You can use the 'ccs' tool,
here is an example (I use for my cluster, adjust the names to suit):
ccs -f /etc/cluster/cluster.conf --createcluster an-anvil-04
ccs -f /etc/cluster/cluster.conf --setcman two_node="1" expected_votes="1"
ccs -f /etc/cluster/cluster.conf --addnode an-a04n01.alteeve.ca
ccs -f /etc/cluster/cluster.conf --addnode an-a04n02.alteeve.ca
ccs -f /etc/cluster/cluster.conf --addfencedev pcmk agent=fence_pcmk
ccs -f /etc/cluster/cluster.conf --addmethod pcmk-redirect
an-a04n01.alteeve.ca
ccs -f /etc/cluster/cluster.conf --addmethod pcmk-redirect
an-a04n02.alteeve.ca
ccs -f /etc/cluster/cluster.conf --addfenceinst pcmk an-a04n01.alteeve.ca
pcmk-redirect port=an-a04n01.alteeve.ca
ccs -f /etc/cluster/cluster.conf --addfenceinst pcmk an-a04n02.alteeve.ca
pcmk-redirect port=an-a04n02.alteeve.ca
ccs -f /etc/cluster/cluster.conf --setfencedaemon post_join_delay="30"
hth
On 16/06/14 07:13 AM, Thanachit Wichianchai wrote:
Hello Pacemaker guys,
I am doing a proof of concept of active/passive HA cluster on RHEL 6.5
Since the customer who I am working for will finally get support from
Red Hat. Therefore, I am trying to comply with Red Hat Documentation.
as stated in several places that on RHEL 6.5 - pacemaker is now
supported with CMAN stack.
I started configuring things by following steps describe in
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Configuring_the_Red_Hat_High_Availability_Add-On_with_Pacemaker/ap-configfile-HAAR.html
document. This document provides configuration steps by using pcs
command. no ccs or crmsh commands at all.
After I have created cluster. I can start cluster services on node1 but
cannot start it on node2 - there error is /etc/cluster/cluster.conf is
not there on node2
pcs cluster start
Starting Cluster...
Starting cluster:
Checking if cluster has been disabled at boot... [ OK ]
Checking Network Manager... [ OK ]
Global setup... [ OK ]
Loading kernel modules... [ OK ]
Mounting configfs... [ OK ]
Starting cman... xmlconfig cannot find /etc/cluster/cluster.conf
[FAILED]
Stopping cluster:
Leaving fence domain... [ OK ]
Stopping gfs_controld... [ OK ]
Stopping dlm_controld... [ OK ]
Stopping fenced... [ OK ]
Stopping cman... [ OK ]
Unloading kernel modules... [ OK ]
Unmounting configfs... [ OK ]
Error: unable to start cman
pcs cluster status command output on node1 shows "cman" stack
pcs cluster status
Cluster Status:
Last updated: Mon Jun 16 15:31:53 2014
Last change: Mon Jun 16 14:23:04 2014 via crmd on rhcs1.localdomain
Stack: cman
Current DC: rhcs1.localdomain - partition with quorum
Version: 1.1.10-14.el6-368c726
2 Nodes configured
0 Resources configured
PCSD Status:
Error: no nodes found in corosync.conf
but from the aforementioned document from Red Hat. the stack is corosync.
[root@z1 ~]#*|pcs cluster status|*
Cluster Status:
Last updated: Thu Jul 25 13:01:26 2013
Last change: Thu Jul 25 13:04:45 2013 via crmd onz2.example.com
<http://z2.example.com>
Stack: corosync
Current DC:z2.example.com <http://z2.example.com> (2) - partition with
quorum
Version: 1.1.10-5.el7-9abe687
2 Nodes configured
0 Resources configured
from the 2 incidents above, I am not sure whether I am on the right path.
My PoC objectives are to
1. configure Active/Passive HA cluster on RHEL 6.5
2. Get Full Support from Red Hat on both OS and High Availability Add-on
3. choose HA Cluster software and stacks which has a future. I expect to
have more than 5 years support from Red Hat and Community.
I found this quick start guide for redhat on cluster
labshttp://clusterlabs.org/quickstart-redhat.html
I am not sure whether I should use ccs command to create cluster first and
use pcs to manage resource.
on more question, I see corosync will be supported in RHEL7. Can I use
only corosync with pacemaker in RHEL 6.5? Will I get support from Red Hat ?
Could you guys please help advise? Thanks a lot.
--
Thanachit Wichianchai / IT Specialist - RHCSA, RHCE
+66 87 696 5522/ thanachit [at] acm.org
<mailto:thanachit%20[at]%20acm.org>
http://hi.im/thanachit
Google Plus <https://plus.google.com/u/0/102459307371925233265/posts>
Linkedin <http://th.linkedin.com/in/thanachit>
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--
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without
access to education?
_______________________________________________
Pacemaker mailing list: Pacemaker@oss.clusterlabs.org
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Project Home: http://www.clusterlabs.org
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--
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without
access to education?
_______________________________________________
Pacemaker mailing list: Pacemaker@oss.clusterlabs.org
http://oss.clusterlabs.org/mailman/listinfo/pacemaker
Project Home: http://www.clusterlabs.org
Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org
