[Openstack] OpenStack upgrade Icehouse Centos 6 best practice

Chris contact at progbau.de
Mon Aug 17 10:53:29 UTC 2015



We currently plan to upgrade our Openstack setup from Icehouse to Juno or
even Kilo. This also includes a version upgrade on the host based OS from
Centos 6.6 to 7.x

I have some questions regarding the upgrade an hope to learn from your


First question is, is there a Openstack version compatibility guaranteed
within the different releases? The idea behind it to upgrade the different
services (compute nodes / management nodes) in separate phases.

Second, is the live-migration with block-migrate feature compatible between
versions. One upgrade solution we currently playing with is to move existing
VMs with live-migration & block-migrate (no shared storage) to fresh
installed Centos 7 Kilo compute nodes.


Any best practice tips highly appreciated!








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