@Alex, Ah yes, that could be the reason. But I tried to bootstrap it, it doesn't work. "" SET GLOBAL wsrep_provider_options="pc.bootstrap=1"; ERROR 1210 (HY000): Incorrect arguments to SET "" This may be because after setting the provider again (from 'none') I see following in error log (and in variables) 131212 15:51:50 [Note] WSREP: Passing config to GCS: base_host = 127.0.0.1; base_port = 4567; cert.log_conflicts = no; gcache.dir = /pxc/datadir/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = /pxc/datadir//galera.cache; gcache.page_size = 128M; gcache.size = 128M; gcs.fc_debug = 0; gcs.fc_factor = 1; gcs.fc_limit = 16; gcs.fc_master_slave = NO; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = NO; repl.causal_read_timeout = PT30S; repl.commit_order = 3; repl.key_format = FLAT8; repl.proto_max = 5 There are two issues here: a) The config set in my.cnf is lost, it is not refreshed to provider. b) There are no pc, protonet, ist etc. parameters above. So they are also lost. Hence bootstrapping is not possible. Full log: ================================================================================= 131212 15:51:48 [Note] WSREP: wsrep_provider_update: /pxc56/lib/libgalera_smm.so 131212 15:51:48 [Note] WSREP: Stop replication 131212 15:51:48 [Note] WSREP: Provider disconnect 131212 15:51:50 [Note] WSREP: waiting for client connections to close: 1 131212 15:51:50 [Note] WSREP: Setting wsrep_ready to 0 131212 15:51:50 [Note] WSREP: Read WSREPXid from InnoDB: 5805bbc4-3038-11e3-937d-aa946afe7370:15933 131212 15:51:50 [Note] WSREP: Initial position: 5805bbc4-3038-11e3-937d-aa946afe7370:15933 131212 15:51:50 [Note] WSREP: wsrep_load(): loading provider library '/pxc56/lib/libgalera_smm.so' 131212 15:51:50 [Note] WSREP: wsrep_load(): Galera 3.2(rXXXX) by Codership Oy