Jeff, The bridge naming format changed and to make the transition smoother, a libvirt hook was used to rename the bridges within the libvirt config. See the release notes for 4.3 and search for 'hook': http://cloudstack-release-notes.readthedocs.org/en/4.3/rnotes.html
- Si ________________________________________ From: Jeff Hair <[email protected]> Sent: Monday, February 15, 2016 3:45 AM To: [email protected] Subject: Re: Upgrading from ACS 4.2 to 4.7 As a person also interested in eventually going from 4.2 to 4.7, can you explain a little more about this libvirt hook? On Sun, Feb 14, 2016 at 7:17 PM, Simon Weller <[email protected]> wrote: > Indra, > > I would strongly suggest you test the upgrade prior to doing it in your > production environment. > I would build a lab platform, even if it's virtualized so you can test the > process. 4.2 is very old and in my opinion, the most likely problems you'll > face will be related to database upgrades or a lesser known feature that > has broken in some way. > > There were also some interface name changes that occurred around the 4.3 > time frame, that requite a libvirt hook in order to address them. > > - Si > > > ________________________________________ > From: Indra Pramana <[email protected]> > Sent: Sunday, February 7, 2016 2:28 AM > To: [email protected] > 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- > -- *Jeff Hair* Technical Lead and Software Developer Tel: (+354) 415 0200 [email protected] www.greenqloud.com
