[Pacemaker] pacemaker with CMAN on RHEL 6.5
emmanuel segura
emi2fast at gmail.com
Mon Jun 16 15:10:50 EDT 2014
So Document examples for redhat 6 made it with Redhat 7 :)
2014-06-16 19:58 GMT+02:00 Thanachit Wichianchai <thanachit.w at googlemail.com>:
> Hi, It is EL 6.5. For Version: 1.1.10-5.el7-9abe687 it is the output posted in redhat document. --
>>>>> 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
>
> Thank you very much.
>
> Thanachit
>
>
> Sent from my iPad
>
>> On 16 มิ.ย. 2557, at 23:24, Digimer <lists at alteeve.ca> wrote:
>>
>> 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 <lists at 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 at 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>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Pacemaker mailing list: Pacemaker at 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
>>>>
>>>>
>>>> --
>>>> 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 at 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
>>
>>
>> --
>> 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 at 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
>
> _______________________________________________
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> 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
--
esta es mi vida e me la vivo hasta que dios quiera
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