ceph -s --debug-auth 20 --debug-ms 1
2013-08-22 17:29:54.087938 7fb0fccc2700  1 -- :/0 messenger.start
2013-08-22 17:29:54.088049 7fb0fccc2700  5 adding auth protocol: none
2013-08-22 17:29:54.088312 7fb0fccc2700  1 -- :/1010254 --> 10.230.0.10:6789/0 -- auth(proto 0 30 bytes epoch 0) v1 -- ?+0 0x7fb0f8021780 con 0x7fb0f8021280
2013-08-22 17:29:54.088667 7fb0f4d56700  1 -- 10.230.0.20:0/1010254 learned my addr 10.230.0.20:0/1010254
2013-08-22 17:29:54.089276 7fb0f6d5a700  1 -- 10.230.0.20:0/1010254 <== mon.0 10.230.0.10:6789/0 1 ==== auth_reply(proto 0 -95 Operation not supported) v1 ==== 24+0+0 (3632875112 0 0) 0x7fb0ec000940 con 0x7fb0f8021280
2013-08-22 17:29:54.089352 7fb0fccc2700  0 librados: client.admin authentication error (95) Operation not supported
2013-08-22 17:29:54.089478 7fb0fccc2700  1 -- 10.230.0.20:0/1010254 mark_down 0x7fb0f8021280 -- 0x7fb0f8021020
2013-08-22 17:29:54.089529 7fb0fccc2700  1 -- 10.230.0.20:0/1010254 mark_down_all
2013-08-22 17:29:54.089673 7fb0fccc2700  1 -- 10.230.0.20:0/1010254 shutdown complete.
Error connecting to cluster: Error