On Wed, Jun 28, 2017 at 6:33 AM <[email protected]> wrote:
> > I don't think either. I don't think there is another way then just > 'hacky' changing the MONMaps. There have been talks of being able to make > Ceph dual-stack, but I don't think there is any code in the source right > now. > > Yeah, that's what I'd like to know. What do the Ceph team think of > providing ways for switching? > We're not in any need to do so now but, it'd be good to know if the team > dual-stack support or at least to test and document a way to do it as > opposed to a "this should work but you're on your own" kind of deal. > My understanding is that sepia's current infrastructure hosting can't give us real IPv6, so we're not in any position to really make any promises about interoperability. Sorry. :( That said, I think Wido's list is the way to go — but I don't remember the problem with running mixed. Is it just that the messenger implementations don't handle it live, I think? Certainly shutting down, updating all the monmaps/configs (if you are setting monitor IP addresses instead of hosts), and then turning it all back on should work but you're on your own... ;) -Greg > > > > ________________________________________ > > From: Wido den Hollander [[email protected]] > > Sent: 27 June 2017 19:19 > > To: Vasilakakos, George (STFC,RAL,SC); [email protected] > > Subject: Re: [ceph-users] Ceph and IPv4 -> IPv6 > > > > > Op 27 juni 2017 om 19:00 schreef [email protected]: > > > > > > > > > Hey Ceph folks, > > > > > > I was wondering what the current status/roadmap/intentions etc. are on > the possibility of providing a way of transitioning a cluster from IPv4 to > IPv6 in the future. > > > > > > My current understanding is that this not possible at the moment and > that one should deploy initially with the version they want long term. > > > > > > However, given the general lack of widespread readiness, I think lots > of us have deployed with IPv4 and were hoping to go to IPv6 when the rest > of our environments enabled it. > > > > > > Is adding such a capability to a future version of Ceph being > considered? > > > > > > > I think you can, but not without downtime. > > > > The main problem is the monmap which contains IPv4 addresses and you > want to change that to IPv6. > > > > I haven't tried this, but I think you should be able to: > > - Extract MONMap > > - Update the IPv4 addresses to IPv6 using monmaptool > > - Set noout flag > > - Stop all OSDs > > - Inject new monmap > > - Stop MONs > > - Make sure IPv6 is fixed on MONs > > - Start MONs > > - Start OSDs > > > > Again, this is from the top of my head, haven't tried it, but something > like that should probably work. > > > > Wido > > > > > > > > > > Best regards, > > > > > > George V. > > > _______________________________________________ > > > ceph-users mailing list > > > [email protected] > > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
_______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
