# my_print_defaults mysqld 

--performance_schema=on 

--datadir=/opt/data/mysql 

--tmpdir=/tmp/ 

--log_error=/opt/data/mysql/error.log 

--log_warnings=2 

--query_cache_size=0 

--query_cache_type=0 

--log_bin 

--log_slave_updates 

--binlog_format=ROW 

--innodb_log_file_size=128M 

--innodb_buffer_pool_size=2G 

--innodb_flush_method=O_DIRECT 

--innodb_flush_log_at_trx_commit=1 

--innodb_autoinc_lock_mode=2 

--wsrep_cluster_name=GaleraPOC 

--wsrep_cluster_address=gcomm://mariadb001,mariadb002,mariadb003 

--wsrep_provider=/usr/lib64/galera/libgalera_smm.so 

--wsrep_provider_options=gcache.size=512M 

--wsrep_sst_method=xtrabackup-v2 

--wsrep_sst_auth=sst:sstpass 

--server_id=1 

--wsrep_node_name=mariadb001 

--wsrep_node_address=mariadb001 

--wsrep_sst_receive_address=mariadb001 

* 10.0.12-MariaDB-wsrep-log MariaDB Server, wsrep_25.10.r4002 

* wsrep_provider_version=25.3.5(rXXXX) 

 # ./node1.sh 

.............ERROR 2013 (HY000) at line 1: Lost connection to MySQL server during query 

ERROR with query 

 # ./node2.sh 

....... 

140828 15:34:49 [ERROR] mysqld got signal 11 ; 

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. 

To report this bug, see http://kb.askmonty.org/en/reporting-bugs 

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. 

Server version: 10.0.12-MariaDB-wsrep-log 

key_buffer_size=134217728 

read_buffer_size=131072 

max_used_connections=7 

max_threads=153 

thread_count=8 

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467215 K  bytes of memory 

Hope that's ok; if not, decrease some variables in the equation. 

Thread pointer: 0x0x7f2d7ce8f008 

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 = 0x7f2e43e56ce0 thread_stack 0x48000 

/usr/sbin/mysqld(my_print_stacktrace+0x2b)[0xb914fb] 

/usr/sbin/mysqld(handle_fatal_signal+0x398)[0x743318] 

/lib64/libpthread.so.0(+0xf710)[0x7f2e43b1c710] 

/lib64/libc.so.6(+0x83742)[0x7f2e421cc742] 

/usr/sbin/mysqld(_ZNK19rpl_sql_thread_info22cached_charset_compareEPc+0x20)[0x699bf0] 

/usr/sbin/mysqld(_ZN15Query_log_event14do_apply_eventEP14rpl_group_infoPKcj+0x837)[0x800817] 

/usr/sbin/mysqld(_Z14wsrep_apply_cbPvPKvmjPK14wsrep_trx_meta+0x525)[0x6f05e5] 

/usr/lib64/galera/libgalera_smm.so(_ZNK6galera9TrxHandle5applyEPvPF15wsrep_cb_statusS1_PKvmjPK14wsrep_trx_metaERS6_+0xb1)[0x7f2e3eb 

4c2c1] 

/usr/lib64/galera/libgalera_smm.so(+0x1aaf95)[0x7f2e3eb83f95] 

/usr/lib64/galera/libgalera_smm.so(_ZN6galera13ReplicatorSMM10replay_trxEPNS_9TrxHandleEPv+0x12e)[0x7f2e3eb8485e] 

/usr/lib64/galera/libgalera_smm.so(galera_replay_trx+0x5c)[0x7f2e3eb9845c] 

/usr/sbin/mysqld(_Z24wsrep_replay_transactionP3THD+0x2de)[0x6f217e] 

/usr/sbin/mysqld[0x5e1120] 

/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x16d0)[0x5e28a0] 

/usr/sbin/mysqld(_Z10do_commandP3THD+0x132)[0x5e3072] 

/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x54b)[0x6a190b] 

/usr/sbin/mysqld(handle_one_connection+0x42)[0x6a1a02] 

/lib64/libpthread.so.0(+0x79d1)[0x7f2e43b149d1] 

/lib64/libc.so.6(clone+0x6d)[0x7f2e42231b5d] 

Trying to get some variables. 

Some pointers may be invalid and cause the dump to abort. 

Query (0x7f2e1b631251): is an invalid pointer 

Connection ID (thread ID): 331 

Status: NOT_KILLED