Monitors can use only exactly one IP address. ceph-deploy uses some heuristics based on hostname resolution and ceph public addr configuration to guess which one to use during setup. (Which I've always found to be a quite annoying feature.)
The mon's IP must be reachable from all ceph daemons and clients, so it should be on your "public" network. Changing the IP of a mon is possible but annoying, it is often easier to remove and then re-add with a new IP (if possible): http://docs.ceph.com/docs/master/rados/operations/add-or-rm-mons/#changing-a-monitor-s-ip-address Paul 2018-05-10 12:36 GMT+02:00 Massimo Sgaravatto <massimo.sgarava...@gmail.com> : > I have a ceph cluster that I manually deployed, and now I am trying to see > if I can use ceph-deploy to deploy new nodes (in particular the object gw). > > The network configuration is the following: > > Each MON node has two network IP: one on a "management network" (not used > for ceph related stuff) and one on a "public network", > The MON daemon listens to on the pub network > > Each OSD node has three network IPs: one on a "management network" (not > used for ceph related stuff), one on a "public network" and the third one > is an internal network to be used as ceph cluster network (for ceph > internal traffic: replication, recovery, etc) > > > Name resolution works, but names are resolved to the IP address of the > management network. > And it looks like this is a problem. E.g. the following command (used in > ceph-deploy gatherkeys) issued on a MON host (c-mon-02) doesn't work: > > /usr/bin/ceph --verbose --connect-timeout=25 --cluster=ceph --name mon. > --keyring=/var/lib/ceph/mon/ceph-c-mon-02/keyring auth get client.admin > > unless I change the name resolution of c-mon-02 to the public address > > > Is it a requirement (at least for ceph-deploy) that the name of each node > of the ceph cluster must be resolved to the public IP address ? > > > Thanks, Massimo > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > -- -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90
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