Sent from my iPhone
> On Apr 5, 2018, at 5:29 AM, Yaniv Kaul <yk...@redhat.com> wrote: > > > >> On Thu, Apr 5, 2018 at 9:08 AM, TomK <tomk...@mdevsys.com> wrote: >>> On 4/4/2018 3:11 AM, Yaniv Kaul wrote: >>> >>> >>> On Wed, Apr 4, 2018 at 12:39 AM, Tom <t...@mdevsys.com >>> <mailto:t...@mdevsys.com>> wrote: >>> >>> >>> >>> Sent from my iPhone >>> >>> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <yk...@redhat.com >>> <mailto:yk...@redhat.com>> wrote: >>> >>>> >>>> >>>> On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomk...@mdevsys.com >>>> <mailto:tomk...@mdevsys.com>> wrote: >>>> >>>> Hey Guy's, >>>> >>>> If I'm looking to setup the oVirt engine in an HA >>>> configuration off the physical servers hosting my VM's (non >>>> self hosted), what are my options here? >>>> >>>> I want to setup two to four active oVirt engine instances >>>> elsewhere and handle the HA via something like haproxy / >>>> keepalived to keep the entire experience seamless to the user. >>>> >>>> >>>> You will need to set up the oVirt engine service as well as the PG >>>> database (and ovirt-engine-dwhd service and any other service we >>>> run next to the engine) as highly available module. >>>> In pacemaker[1], for example. >>>> You'll need to ensure configuration is also sync'ed between nodes, >>>> etc. >>>> Y. >>> >>> So already have one ovirt engine setup separately on a vm that >>> manages two remote physical hosts. So familiar with the single host >>> approach which I would simply replicate. At least that’s the idea >>> anyway. Could you please expand a bit on the highly available >>> module and syncing the config between hosts? >>> >>> >>> That's a different strategy, which is also legit - you treat this VM as a >>> highly available resource. Now you do not need to sync the config - just >>> the VM disk and config. >> >> I think there's a postgres component too and if oVirt engine keeps all it's >> date on the postgres tables, then synchronizing this piece might be all I >> need? I'm not sure how the separate oVirt engines sitting on various >> separate physical hosts keep their settings in sync about the rest of the >> physicals in an oVirt environment. (Assume we may have 100 oVirt physicals >> for example.) > > There's more than just the database, although it contains 99% of what you > need. See the content of the result of 'engine-backup' command. > I think you might be somewhat confusing between the number of oVirt > hypervisors (we support hundreds) and the Engine - the management, which is > single - and with hosted-engine, it's a single, but highly available virtual > machine - that can run on one of several (I suggest 3-8) of those hypervisors. > Y. Yah, still very new to much of this. Thank you again. I’ll take that away and do some reading. Cheers, Tom > >> >> >>> Perhaps something like >>> https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html >>> . >>> >>> But if you are already doing that, I'm not sure why you'd prefer this over >>> hosted-engine setup. >> >> I'm comparing both options. I really don't want to ask too many specific >> until I have the chance to read into the details of both. >> >>> Y. >> >> Cheers, >> Tom >> >>> >>> >>> Cheers, >>> Tom >>> >>>> >>>> [1] https://clusterlabs.org/quickstart-redhat.html >>>> <https://clusterlabs.org/quickstart-redhat.html> >>>> >>>> >>>> From what I've seen in oVirt, that seems to be possible >>>> without the two oVirt engines even knowing each other's >>>> existence but is it something anyone has ever done? Any >>>> recommendations in this case? >>>> >>>> Having settings replicated would be a bonus but I would be >>>> comfortable if they weren't and I handle that myself. >>>> >>>> -- Cheers, >>>> Tom K. >>>> >>>> ------------------------------------------------------------------------------------- >>>> >>>> Living on earth is expensive, but it includes a free trip >>>> around the sun. >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users@ovirt.org <mailto:Users@ovirt.org> >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> <http://lists.ovirt.org/mailman/listinfo/users> >>>> >>>> >>> >> >> >> -- >> Cheers, >> Tom K. >> ------------------------------------------------------------------------------------- >> >> Living on earth is expensive, but it includes a free trip around the sun. >> >
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