Hi, I added the fourth monitor in the cluster, but it's always down even after I restart the mon service. I attached the logs below, could you help?
[root@ceph1]# ceph health detail HEALTH_WARN 1 mons down, quorum 0,1,2 1,3,0; clock skew detected on mon.3, mon.0 mon.8 (rank 3) addr 192.168.1.4:6789/0 is down (out of quorum) [root@ceph1]# service ceph status mon.8 === mon.8 === mon.8: running {"version":"0.80"} [root@ceph1]# ceph -s cluster bfc68f87-30b3-4189-83bc-895de3852064 health HEALTH_WARN 257 pgs stale; 1/25 in osds are down; 1 mons down, quorum 0,1,2 1,3,0; clock skew detected on mon.3, mon.0 monmap e9: 4 mons at {0=192.168.1.2:6789/0,1=192.168.0.3:6789/0,3=192.168.0.5:6789/0,8=192.168.1.4:6789/0}, election epoch 26, quorum 0,1,2 1,3,0 mdsmap e4: 1/1/1 up {0=0=up:active} osdmap e832: 25 osds: 24 up, 25 in pgmap v1589: 5217 pgs, 4 pools, 1900 bytes data, 23 objects 1631 MB used, 4888 GB / 4890 GB avail 257 stale+active+clean 4960 active+clean [root@ceph1]# ceph mon_status {"name":"1","rank":0,"state":"leader","election_epoch":26,"quorum":[0,1,2],"outside_quorum":[],"extra_probe_peers":[],"sync_provider":[],"monmap":{"epoch":9,"fsid":"bfc68f87-30b3-4189-83bc-895de3852064","modified":"2014-06-12 16:33:42.756814","created":"2014-06-12 15:37:48.802401","mons":[{"rank":0,"name":"1","addr":"192.168.0.3:6789\/0"},{"rank":1,"name":"3","addr":"192.168.0.5:6789\/0"},{"rank":2,"name":"0","addr":"192.168.1.2:6789\/0"},{"rank":3,"name":"8","addr":"192.168.1.4:6789\/0"}]}} Ceph-osd.8.log - 2014-06-12 17:01:10.152999 7f1f644517a0 0 ceph version 0.80 (b78644e7dee100e48dfeca32c9270a6b210d3003), process ceph-mon, pid 12997 2014-06-12 17:01:10.259693 7f1f644517a0 0 mon.8 does not exist in monmap, will attempt to join an existing cluster 2014-06-12 17:01:10.264868 7f1f644517a0 0 starting mon.8 rank -1 at 192.168.1.4:6789/0 mon_data /var/lib/ceph/mon/mon8 fsid bfc68f87-30b3-4189-83bc-895de3852064 2014-06-12 17:01:10.265437 7f1f644517a0 1 mon.8@-1(probing) e0 preinit fsid bfc68f87-30b3-4189-83bc-895de3852064 2014-06-12 17:02:10.265740 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150672 avail 283868784 2014-06-12 17:03:10.265946 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150696 avail 283868760 2014-06-12 17:04:10.266134 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150720 avail 283868736 2014-06-12 17:05:10.266296 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150708 avail 283868748 2014-06-12 17:06:10.266460 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150712 avail 283868744 2014-06-12 17:07:10.266633 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150732 avail 283868724 2014-06-12 17:08:10.266798 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150748 avail 283868708 2014-06-12 17:09:10.266959 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150756 avail 283868700 2014-06-12 17:10:10.267142 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150792 avail 283868664 2014-06-12 17:11:10.267286 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150804 avail 283868652 2014-06-12 17:12:10.267453 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150808 avail 283868648 2014-06-12 17:13:10.267622 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150840 avail 283868616 2014-06-12 17:14:10.267785 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150860 avail 283868596 2014-06-12 17:15:10.268075 7f1f619fa700 0 mon.8@-1(probing).data_health(0) update_stats avail 93% total 302379456 used 3150872 avail 283868584 Wei Cao (Buddy)
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