[Pacemaker] pacemaker with CMAN on RHEL 6.5
Thanachit Wichianchai
thanachit.w at googlemail.com
Tue Jun 17 00:10:01 EDT 2014
Hi Everyone,
Thank you very much for your help !
I will follow clusterlabs.org's quickstart guide. :)
Thanachit W.
On Tue, Jun 17, 2014 at 2:10 AM, emmanuel segura <emi2fast at gmail.com> wrote:
> 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
> >
> > _______________________________________________
> > 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
>
>
>
> --
> esta es mi vida e me la vivo hasta que dios quiera
>
> _______________________________________________
> 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
>
--
Thanachit Wichianchai / IT Specialist - RHCSA, RHCE
+66 87 696 5522/ thanachit [at] acm.org
http://hi.im/thanachit
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<https://plus.google.com/u/0/102459307371925233265/posts> [image: Linkedin]
<http://th.linkedin.com/in/thanachit>
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