Hi, Justin Zygmont <[email protected]> writes:
> -----Original Message----- > From: Derek Atkins [mailto:[email protected]] > Sent: Monday, May 21, 2018 8:33 AM > To: Simone Tiraboschi <[email protected]> > Cc: users <[email protected]>; [email protected] > Subject: [ovirt-users] Re: oVirt: single host install > > Hi, > > Simone Tiraboschi <[email protected]> writes: > >> On Mon, May 21, 2018 at 7:49 AM, <[email protected]> wrote: >> >> Use case: small sites with a minimum number of vm's. >> >> Is there such a thing as a single host install? >> >> In the past we had the all-in-one mode but we deprecated it. >> Now the suggested mode is hosted-engine since you could expand it >> adding other hosts in the future. >> > > Sounds like "local storage" is useless then? IMHO, yes. When I installed (4.0) you could not use it for hosted-engine storage. Don't know if that changed, but what's the point of using different storage methods? I already had to set up a local NFS (pr theoretically Gluster) for HE -- so might as well re-use that for my main storage too! > I am running in this configuration and have had little problem. I migrated > from an old vmware-server platform, and, modulo a few hiccups along the way > and a few false starts as I was installing ovirt, it's been pretty stable for > me! > > Did you use NFS for all storage domains? Yes. Both HE and Main Data storage domains are backed by SSD. My ISO domain is backed by spinning rust. >> Is it valid for production use? >> >> With a single host the upgrades will become more intrusive: without >> the capability to migrate your VMs on other hosts at upgrade time, you >> will be required to bring down everything. >> > > This is true -- I have to bring everything down when I want to upgrade the > system, especially the host itself. So I don't upgrade as often as I might > if I had multiple hosts where I could migrate. > > How can you do it without a second host and importing with a temporary > storage domain? I just shut everything down. So long as it's planned my users can handle a 30-60 minute outage. And this is only when I update the host. I can update the Engine on its own, and often will update my VMs simultaneously to minimize downtime. But I'm okay with some downtime. -derek PS: I don't know what mailer you used, but I had a very hard time differentiating your responses from mine. Hopefully I did not miss one of your questions. -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH [email protected] PGP key available _______________________________________________ Users mailing list -- [email protected] To unsubscribe send an email to [email protected]
