It looks like in step one you needed to supply a either monmap or addresses of existing monitors. What errors did you encounter? -Sam 2012/1/10 Sławomir Skowron <slawomir.skowron@xxxxxxxxx>: > I have some problem with adding a new mon to existing ceph cluster. > > Now cluster contains a 3 mon's, but i started with only one in one > machine. Then adding a second, and third machine, with new mon's, and > OSD. Adding, a new OSD is quiet simple, but adding, a new mon is > compilation of some pieces in old doc of ceph, new doc, and a group > mails. > > This -> http://ceph.newdream.net/docs/latest/ops/manage/grow/mon/ - > not working properly in section (Adding a monitor) > > Maybe this will be useful for someone: > > 1. Create a new mon structure with existing one working mon instance, > maybe created with mkcepfs in init of cluster. > > a) edit ceph.conf, and add new mon definition in mon part of conf in > whole cluster. > > b) ceph auth get mon. -o /tmp/monkey > > c) fsid=`ceph fsid --concise` > > d) ceph-mon -i <new-mon-id> --mkfs -k /tmp/monkey --fsid $fsid > > 2. Before you start new mon (check if new mon is not working - in my > case it's not starting even if i try :)), some things musts be done > before. > It's based on http://ceph.newdream.net/docs/latest/ops/manage/grow/mon/ > (Removing a monitor from an unhealthy or down cluster) > > a) On a surviving monitor node, find the most recent monmap in mon > dir, like in doc about removing monitor. > > b) On a surviving monitor node: > > $ cp $mon_data/monmap/<latest-monmap-id> /tmp/foo > $ monmaptool /tmp/foo --add <new-mon-id> <new-mon-ip>:<new-mon-port> > > c) Inject a new monmap to working ceph mon. > > ceph-mon -i <surviving-mon-id> --inject-monmap /tmp/foo > > ceph -s will show new number of mons. > > d) copy /tmp/foo, and inject this monmap, to every mon, that works > in existing cluster, even on machine with new mon to update, a monmap > in new mon directory. > > e) Start new mon: > > service ceph start mon > > then mon_status will show a new list of mon in ceph cluster. > > ceph mon_status > > Now new mon works perfect. > > > Maybe it's not a supported way to insert a new mon to cluster, but for > me now it's only way that works :) > > -- > ----- > Pozdrawiam > > Sławek "sZiBis" Skowron > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
