i had 2 nodes crashed on ubuntu 10.04 LTS and percona-xtradb-cluster-common-5.5 5.5.30-23.7.4-403.lucid 140214 5:54:45 [Note] WSREP: Flow-control interval: [23, 23] 140214 5:54:45 [Note] WSREP: New cluster view: global state: af24cb2c-a76e-11e2-0800-982f50316bdc:13855971, view# 157: Primary, number of nodes: 2, my index: 0, protocol version 2 140214 5:54:45 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification. 140214 5:54:45 [Note] WSREP: Assign initial position for certification: 13855971, protocol version: 2 140214 5:54:51 [Note] WSREP: cleaning up 12caf6b8-b399-11e2-0800-85f0fe40ed2a (tcp://10.1.7.1:4567) terminate called after throwing an instance of 'boost::exception_detail::clone_impl >' what(): Transport endpoint is not connected 06:30:44 UTC - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Please help us make Percona Server better by reporting any bugs at http://bugs.percona.com/ key_buffer_size=67108864 read_buffer_size=131072 max_used_connections=85 max_threads=153 thread_count=5 connection_count=5 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 400387 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0 thread_stack 0x40000 /usr/sbin/mysqld(my_print_stacktrace+0x35)[0x7fb9f5] /usr/sbin/mysqld(handle_fatal_signal+0x4b4)[0x6c4724] /lib/libpthread.so.0(+0xf8f0)[0x7f1b8a4a58f0] /lib/libc.so.6(gsignal+0x35)[0x7f1b89094b25] /lib/libc.so.6(abort+0x180)[0x7f1b89098670] /usr/lib/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x115)[0x7f1b8639b8c5] /usr/lib/libstdc++.so.6(+0xcacf6)[0x7f1b86399cf6] /usr/lib/libstdc++.so.6(+0xcad23)[0x7f1b86399d23] /usr/lib/libstdc++.so.6(+0xcae1e)[0x7f1b86399e1e] /usr/lib64/libgalera_smm.so(_ZN5boost15throw_exceptionIN4asio12system_errorEEEvRKT_+0x18a)[0x7f1b8671aeba] /usr/lib64/libgalera_smm.so(_ZNK4asio12basic_socketINS_2ip3tcpENS_21stream_socket_serviceIS2_EEE15remote_endpointEv+0x1fe)[0x7f1b8671f85e] /usr/lib64/libgalera_smm.so(_ZN5gcomm13AsioTcpSocket18assign_remote_addrEv+0x627)[0x7f1b86705c57] /usr/lib64/libgalera_smm.so(_ZN5gcomm15AsioTcpAcceptor14accept_handlerEN5boost10shared_ptrINS_6SocketEEERKN4asio10error_codeE+0xf3)[0x7f1b86706733] /usr/lib64/libgalera_smm.so(_ZN4asio6detail25reactive_socket_accept_opINS_12basic_socketINS_2ip3tcpENS_21stream_socket_serviceIS4_EEEES4_N5boost3_bi6bind_tIvNS8_4_mfi3mf2IvN5gcomm15AsioTcpAcceptorENS8_10shared_ptrINSD_6SocketEEERKNS_10error_codeEEENS9_5list3INS9_5valueIPSE_EENSN_ISH_EEPFNS8_3argILi1EEEvEEEEEE11do_completeEPNS0_15task_io_serviceEPNS0_25task_io_service_operationESI_m+0x180)[0x7f1b8670f3f0] /usr/lib64/libgalera_smm.so(_ZN4asio6detail15task_io_service3runERNS_10error_codeE+0x431)[0x7f1b86731b51] /usr/lib64/libgalera_smm.so(_ZN5gcomm12AsioProtonet10event_loopERKN2gu8datetime6PeriodE+0x1d6)[0x7f1b8672b9f6] /usr/lib64/libgalera_smm.so(_ZN9GCommConn3runEv+0x67)[0x7f1b867466f7] /usr/lib64/libgalera_smm.so(_ZN9GCommConn6run_fnEPv+0x9)[0x7f1b8674a469] /lib/libpthread.so.0(+0x69ca)[0x7f1b8a49c9ca] /lib/libc.so.6(clone+0x6d)[0x7f1b8914a21d] You may download the Percona Server operations manual by visiting http://www.percona.com/software/percona-server/. You may find information in the manual which will help you identify the cause of the crash. 140214 06:30:45 mysqld_safe Number of processes running now: 0 140214 06:30:45 mysqld_safe WSREP: not restarting wsrep node automatically 140214 06:30:45 mysqld_safe mysqld from pid file /var/lib/mysql/db-cluster1-node1.pid ended