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Which software component is responsible for respawning dead instances (in a killed compute node) on other compute node?

asked 2013-09-23 15:07:41 -0500

amber_nic gravatar image

updated 2013-09-24 18:06:50 -0500

Hello everyone! I'm planning to deploy this Highly Available Openstack architecture: Cisco's High-Availability Manual Installation Guide

As a newbie my question is: If one of the compute nodes shuts down: Does the main load balancer run the previously down instances on the other compute nodes or just serves to load balance the network traffic?

If the answer is just the network traffic: which element in this solution restarts the instances killed in the compute node that got shutted down and where does it restart them?

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It looks like you find the answers to your questions. Thank you for updating the question with the solutions you found. You can also add the answer below, in the 'answer' section :)

smaffulli gravatar imagesmaffulli ( 2013-09-24 18:01:10 -0500 )edit

There it is! :)

amber_nic gravatar imageamber_nic ( 2013-09-24 18:11:05 -0500 )edit

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answered 2013-09-24 18:08:08 -0500

amber_nic gravatar image

In this Openstack article it states:

"Currently, there is no official support for VM-level HA in OpenStack—it was initially planned for the Folsom release but was later dropped/postponed. There is currently an incubation project called Evacuate that is adding support for VM-level HA to OpenStack."

And here it says it's planned for Havana.

Meanwhile you can evacuate an instance manually from a failing/dead compute node to another: Openstack Doc - Nova Cli Evacuate

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Asked: 2013-09-23 15:07:41 -0500

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Last updated: Sep 24 '13