I am planning to live migrate VMs. From my testing this works fine providing cross cluster hosts can talk to each other and they share a common migration network.
On 23 August 2017 at 13:54, Gianluca Cecchi <[email protected]> wrote: > On Tue, Aug 22, 2017 at 5:23 PM, Alan Griffiths <[email protected]> > wrote: > >> Hi, >> >> I'm in the process of building a second ovirt cluster within the default >> DC. This new cluster will use the same storage domains as the original >> cluster, and I will slowly migrate VMs from the old cluster to the new. >> >> Given that the old and new cluster hosts have a firewall between them I >> need to ensure that all relevant ports are open, with particular attention >> to the correct operation of SPM. >> >> Is it sufficient to open TCP ports 16514 and 54321 to achieve this? >> >> Thanks, >> >> Alan >> >> > One note: > > when you say: > I will slowly migrate VMs from the old cluster to the new. > > what do you mean exactly with "migrate"? > If you mean Live Migraton as described here: > https://access.redhat.com/documentation/en-US/Red_Hat_Enterp > rise_Virtualization/3.5/html/Administration_Guide/sect- > Migrating_Virtual_Machines_Between_Hosts.html > > please note that you can live migrate a VM only within the same cluster, > not across. > > You can edit a VM of a datacenter and change the cluster where it have to > start, but you have to first shutdown the VM to do so. > Probably you already considered this and the related potential downtime > for your services. > > Gianluca >
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