Hello Indra, I think the procedure is documented here (though not to 4.7, but that shouldn't make a difference) http://cloudstack-release-notes.readthedocs.org/en/latest/upgrade/upgrade-4.2.html cloudstack-awsapi has been obsoleted at some point, so before upgrading you might want to `rpm -e --nodeps cloudstack-awsapi`
Not sure if the CEPH component will add extra complexity. Perhaps other users can advise. If you do not have a staging environment, then you should build one. I have such a thing within a single server with VMs (nested KVM virt), so you don't need to mess with multiple physical machines. In terms of time, it's an operation that - if done manually on a small setup - takes less then an hour (assuming fast Internet), but I usually reserve the whole day/night for the unexpected. Reversing your setup is not supported, but I guess it could be done, it would've been easier if you ran NFS with simple qcow2 files, though. If you take a mysqldump of the management server, a backup of your system VMs disks (not sure how you backup/restore CEPH manually); then nothing is to stop you to "yum downgrade" and restore your SQL and sysVMs backups or just recreating the sysVMs/VRs with the old working template. Personally I'd wait for 4.7.1 to be released which fixes some bugs. -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "Indra Pramana" <[email protected]> > To: [email protected] > Sent: Sunday, 7 February, 2016 08:28:38 > Subject: Upgrading from ACS 4.2 to 4.7 > Dear all, > > We are currently still using ACS 4.2.0 with KVM hypervisor hosts and Ceph > RBD for primary storage. We are planning to upgrade all our management and > agent servers to ACS 4.7.0 (the latest stable version available on ACS > website). > > http://docs.cloudstack.apache.org/projects/cloudstack-release-notes/en/4.7.0/upgrade/upgrade-4.2.html > > Anyone has experience in performing the upgrade? Appreciate if anyone can > share with me anything I need to take note during the upgrade. > > - SystemVM template update, is it straightforward or shall I expect any > issues along the way? > - We are running Ubuntu 12.04 for all our servers, while ACS 4.7 only > specifically supports Ubuntu 14.04, can I upgrade to ACS 4.7 without having > to do "release-upgrade" Ubuntu from 12.04 to 14.04? > - Since all the system VMs and virtual routers need to be restarted as part > of the upgrade, there will be downtime to users. Anyone can advise roughly > how long it will take for the whole upgrade process so that we can plan > accordingly? > - If the whole upgrade fails, can we revert back to the original version > 4.2? Quite worried that it's not possible since systemVM template and > database needs to be upgraded as part of the upgrade. > > Any other tips / tricks that I need to take note of during the upgrade? We > do not have any staging / test environment so it's very important for the > upgrade to be successful. > > Any advice is greatly appreciated. > > Looking forward to your reply, thank you. > > Cheers. > > -ip-
