Re: [ceph-users] moving mons across networks

2017-09-13 Thread Wido den Hollander
> Op 13 september 2017 om 10:38 schreef Dan van der Ster : > > > Hi Blair, > > You can add/remove mons on the fly -- connected clients will learn > about all of the mons as the monmap changes and there won't be any > downtime as long as the quorum is maintained. > > There

Re: [ceph-users] moving mons across networks

2017-09-13 Thread Dan van der Ster
On Wed, Sep 13, 2017 at 11:04 AM, Dan van der Ster wrote: > On Wed, Sep 13, 2017 at 10:54 AM, Wido den Hollander wrote: >> >>> Op 13 september 2017 om 10:38 schreef Dan van der Ster >>> : >>> >>> >>> Hi Blair, >>> >>> You can add/remove

Re: [ceph-users] moving mons across networks

2017-09-13 Thread Dan van der Ster
On Wed, Sep 13, 2017 at 10:54 AM, Wido den Hollander wrote: > >> Op 13 september 2017 om 10:38 schreef Dan van der Ster : >> >> >> Hi Blair, >> >> You can add/remove mons on the fly -- connected clients will learn >> about all of the mons as the monmap changes

Re: [ceph-users] moving mons across networks

2017-09-13 Thread Dan van der Ster
Hi Blair, You can add/remove mons on the fly -- connected clients will learn about all of the mons as the monmap changes and there won't be any downtime as long as the quorum is maintained. There is one catch when it comes to OpenStack, however. Unfortunately, OpenStack persists the mon IP

[ceph-users] moving mons across networks

2017-09-12 Thread Blair Bethwaite
Hi all, We're looking at readdressing the mons (moving to a different subnet) on one of our clusters. Most of the existing clients are OpenStack guests on Libvirt+KVM and we have a major upgrade to do for those in coming weeks that will mean they have to go down briefly, that will give us an