Build centos 6 cluster on openstack

asked 2015-03-10 12:31:08 -0600

S.Bharath gravatar image

Hi All,

I want to build a 2 node centos cluster on my openstack environment, is this possible? is there any documentation or steps and successful in configuring a 2 node centos cluster hosted in openstack.

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Any one help clarify if i can have a 2 node centos cluster setup and make use of Cinder for LUN mapping or use openfiler as a separate linux?

S.Bharath gravatar imageS.Bharath ( 2015-03-12 14:12:22 -0600 )edit

2 answers

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answered 2015-03-12 14:43:08 -0600

NoNoNoo gravatar image

There are some limitation using a cluster software on two openstack instances with centos 6 image.

They depends from cluster software that you want use, with centos 6 there are three software cluster that you can use:

  • cman + service manager For two node cluster you need a quorum disk that require a shared disk between the instances that can't be implemented easily in Openstack. You should use unicast UDP for heartbeating because I'm not sure that multicast isn't supported in Openstack. There isn't any fence agent available for openstack instances.

  • corososync + pacemaker It doesn't require a quorum disk but the problem of fence agent remains.

  • keepalived you can try to follow the following guide but I think that you keepalived has limited features compared to the first two options

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Thanks for the useful information, for shared disk I can use Openfiler and present it to the cluster setup, is that good thing?

S.Bharath gravatar imageS.Bharath ( 2015-03-12 14:52:03 -0600 )edit

From centos documentation you can use iscsi target for qdisk but I never implemented it.

NoNoNoo gravatar imageNoNoNoo ( 2015-03-13 02:15:42 -0600 )edit

answered 2015-03-10 12:54:02 -0600

dbaxps gravatar image

Just for CentOS 7 (RDO Juno) . View :-
I wouldn't advise you to work on CentOS 6.X
Feel free update answer-file for install openstack-nova-compute on Controller Node.

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I may not have properly explained the requirement. I already have IceHouse openstack running. I want run a two node CentOS VM with clustering with openstack as a way to host on.

S.Bharath gravatar imageS.Bharath ( 2015-03-10 13:35:57 -0600 )edit

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Asked: 2015-03-10 12:31:08 -0600

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Last updated: Mar 12 '15