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add new hypervisor

asked 2015-02-04 21:54:21 -0500

njk84sg gravatar image

Hi, I am new to OpenStack. Am I able to add a new hypervisor to the existing OpenStack installation?

Thanks.

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answered 2015-02-04 22:48:02 -0500

larsks gravatar image

updated 2015-02-04 22:50:00 -0500

Yes.

If you search for "openstack adding a compute node" you will find a number of sites that address exactly this question. For the most part, the configuration of your compute nodes will be identical, and they will simply register themselves with your controller(s) via the AMQP message bus.

Note that if you adding a compute node to something that started as an all-in-one (all services on one host) deployment, there are generally a few additional steps vs. when you are adding a compute node to an existing multi-node cluster. In particular, you often need to reconfigure your Neutron networking to use a tenant networking model that supports more than a single host.

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Hi larsks,

Wow. That's great. Thanks for your help.

Cheers, JK

njk84sg gravatar imagenjk84sg ( 2015-02-04 23:24:25 -0500 )edit

Hi Larsks,

I just use the packstack to add two compute nodes in my existing multi-nodes openstack cluster, but something is not right. i can type some commands like "nova list" in new added nodes, but these two nodes are not in the nova hypervisor list. Am I using the packstack in wrong way?

Maple Wang gravatar imageMaple Wang ( 2015-02-07 08:39:39 -0500 )edit

I used the answer file which was used to install my existing openstack cluster, only two places were modified: EXCLUDE_SERVERS=[the list of nodes in existing openstack cluter], CONFIG_COMPUTE_HOSTS=[list of existing compute nodes + two new added compute nodes]

Maple Wang gravatar imageMaple Wang ( 2015-02-07 08:44:58 -0500 )edit

Hi Maple,

See this: https://openstack.redhat.com/Adding_a_compute_node (https://openstack.redhat.com/Adding_a...) It clearly describes how and what to change.. If you are not using RedHat openstack, the commands should be similar.

Cheers, JK

njk84sg gravatar imagenjk84sg ( 2015-02-13 22:28:05 -0500 )edit

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Asked: 2015-02-04 21:54:21 -0500

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Last updated: Feb 04 '15