On 11/11/2016 9:45 AM, Jay Pipes wrote:
On 11/11/2016 08:38 AM, William Josefsson wrote:
Hi everyone, I have been quite concerned about how to migrate 50
projects and total 100 instances on Liberty/CentOS72, to Newton.
My storage backend is CEPH. Can anyone advice if I can as a safe
migration path, do a fresh install of Newton on additional hardware.
The new Newton cluster connecting to same old DB and Storage(CEPH
cluster). And then live-migrate to the new hardware?
Please advice if this approach works. Thx will
The only safe and supported way to upgrade OpenStack is to do an N-1 to
N upgrade.
Upgrade your controller installation to Mitaka, run your migrations (DB
and online data migrations) then upgrade all of your nova-compute nodes
one by one from Liberty to Mitaka. You will not need to live-migrate any
workloads unless you simultaneously want to upgrade either the operating
system or the libvirt/QEMU versions on the nova-computes.
Rinse and repeat to get to Newton.
There's many guides online for how to do upgrades of OpenStack. Please
follow one of them to perform a best practice N-1 to N upgrade.
Best,
-jay
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The nova docs on rolling upgrades were also recently updated:
http://docs.openstack.org/developer/nova/upgrade.html#minimal-downtime-upgrade-process
--
Thanks,
Matt Riedemann
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