> Op 28 juni 2017 om 11:24 schreef george.vasilakakos@xxxxxxxxxx: > > > Hey Wido, > > Thanks for your suggestion. It sounds like the process might be feasible but I'd be looking for an "official" thing to do to a production cluster. Something that's documented ceph.com/docs, tested and "endorsed" if you will by the Ceph team. Honestly I think there aren't that many IPv6 deployments with Ceph out there. I for sure am a big fan a deployer of Ceph+IPv6, but I don't know many around me. There is probably no automated testing with IPv6 either. > We could try this on a pre-prod environment but it sounds rather "hacky", as in, there's a number of manual steps involved, including a couple where you're basically manipulating internal, persistent state information. > > I think most people would not be too inclined to do this to their production set ups. > 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. Wido > Best regards, > > George > ________________________________________ > From: Wido den Hollander [wido@xxxxxxxx] > Sent: 27 June 2017 19:19 > To: Vasilakakos, George (STFC,RAL,SC); ceph-users@xxxxxxxxxxxxxx > Subject: Re: Ceph and IPv4 -> IPv6 > > > Op 27 juni 2017 om 19:00 schreef george.vasilakakos@xxxxxxxxxx: > > > > > > 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 > > ceph-users@xxxxxxxxxxxxxx > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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