Re: [ovirt-users] Manually starting VMs via vdsClient (HE offline)

On 9 February 2017 at 12:03, Dan Yasny <dyasny(a)gmail.com&gt; wrote: > > On Thu, Feb 9, 2017 at 9:55 AM, Doug Ingham <dougti(a)gmail.com&gt; wrote: > >> Hi Dan, >> >> On 8 February 2017 at 18:26, Dan Yasny <dyasny(a)gmail.com&gt; wrote: >>> >>> >>> But seriously, above all, I'd recommend you backup the engine (it comes >>> with a utility) often and well. I do it via cron every hour in production, >>> keeping a rotation of hourly and daily backups, just in case. It doesn't >>> take much space or resources, but it's more than just best practice - that >>> database is the summary of the entire setup. >>> >>> >> If you don't mind, may I ask what process you use for backing up your >> engine? If you use HE, do you keep one server dedicated to just that VM? >> I've not had that particular issue in the restore process yet, however I >> read that it's recommended the HE host is free of virtual load before the >> backup takes place. And as they need to be done frequently, I'm reading >> that as a dedicated host... >> >> > If you use a dedicated host, you might as well abandon self hosted. HE is > nice for small setups with the HA built in for extra fun, but once you > scale, it might not be able to cope and you'll need real hardware. You're > running a heavy-ish java engine plus two databases after all. > > So as I said, all I do is add the engine-backup command to cron on the > engine, and then my backup server comes in and pulls out the files via scp, > also through cron. Nothing fancy really, but it lets me sleep at night > This particular project has 10 new maxed out servers to back it, and I don't see it outgrowing that for at least a year or so. It's hardly a full DC. I presume the DB will become the heaviest part of the load, and I'm already planning a separate high I/O environment for dedicated HA DB hosts. See the top section of this page: http://www.ovirt.org/documentation/self-hosted/ chap-Backing_up_and_Restoring_an_EL-Based_Self-Hosted_Environment It seems that I'll always have to keep at least one host free to be able to avoid restore problems. If not, and I were to keep hourly backups, then migrating VMs off the host every hour would just be a pain.

-- Doug