2018-04-20T01:15:20.607935Z 0 [System] [MY-013169] [Server] /mysql/mysql-commercial-8.0.12-macos10.13-x86_64/bin/mysqld (mysqld 8.0.12-commercial) initializing of server in progress as process 2731 2018-04-20T01:15:20.610400Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /Users/sakila/mysql-sandboxes/3330/sandboxdata/ is case insensitive [warn] kq_init: detected broken kqueue; not using.: Undefined error: 0 2018-04-20T01:15:22.674602Z 5 [Warning] [MY-010453] [Server] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option. 2018-04-20T01:15:24.066590Z 0 [System] [MY-013170] [Server] /mysql/mysql-commercial-8.0.12-macos10.13-x86_64/bin/mysqld (mysqld 8.0.12-commercial) initializing of server has completed 2018-04-20T01:15:25.620118Z 0 [Warning] [MY-010101] [Server] Insecure configuration for --secure-file-priv: Location is accessible to all OS users. Consider choosing a different directory. 2018-04-20T01:15:25.620644Z 0 [System] [MY-010116] [Server] /mysql/mysql-commercial-8.0.12-macos10.13-x86_64/bin/mysqld (mysqld 8.0.12-commercial) starting as process 2732 2018-04-20T01:15:25.625041Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /Users/sakila/mysql-sandboxes/3330/sandboxdata/ is case insensitive [warn] kq_init: detected broken kqueue; not using.: Undefined error: 0 2018-04-20T01:15:25.978091Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed. 2018-04-20T01:15:25.997750Z 0 [System] [MY-010931] [Server] /mysql/mysql-commercial-8.0.12-macos10.13-x86_64/bin/mysqld: ready for connections. Version: '8.0.12-commercial' socket: 'mysqld.sock' port: 3330 MySQL Enterprise Server - Commercial. 2018-04-20T01:22:44.477740Z 13 [ERROR] [MY-011685] [Repl] Plugin group_replication reported: 'The group name option is mandatory' 2018-04-20T01:22:44.478177Z 13 [ERROR] [MY-011660] [Repl] Plugin group_replication reported: 'Unable to start Group Replication on boot' 2018-04-20T01:22:44.609970Z 13 [Warning] [MY-010604] [Repl] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=sakila-relay-bin' to avoid this problem. 2018-04-20T01:22:44.612756Z 13 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:22:44.625074Z 13 [Warning] [MY-011735] [Repl] Plugin group_replication reported: '[GCS] Automatically adding IPv4 localhost address to the whitelist. It is mandatory that it is added.' 2018-04-20T01:22:44.639002Z 15 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_applier' executed'. Previous state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:22:48.449670Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:22:48.455820Z 24 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:22:53.458233Z 24 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:22:53.510102Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:22:53.510143Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:23:53.557693Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:23:53.564036Z 26 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:23:58.565423Z 26 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:23:58.612955Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:23:58.613003Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:24:58.659016Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:24:58.665503Z 28 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:25:03.666457Z 28 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:25:03.731447Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:25:03.731494Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:26:03.834347Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:26:03.841519Z 30 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:26:08.844273Z 30 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:26:08.935168Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:26:08.935209Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:26:54.864844Z 0 [Warning] [MY-011499] [Repl] Plugin group_replication reported: 'Members removed from the group: sakila.local:3320' 2018-04-20T01:27:09.036851Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:27:09.043177Z 34 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:27:14.046346Z 34 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:27:14.109331Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:27:14.109371Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:28:14.204902Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:28:14.211309Z 36 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:28:19.214570Z 36 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:28:19.268359Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:28:19.268410Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:29:19.323098Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:29:19.329273Z 38 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:29:24.334670Z 38 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:29:24.397762Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:29:24.397812Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:30:24.467921Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:30:24.473826Z 40 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:30:29.475588Z 40 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:30:29.544917Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:30:29.544972Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:31:29.620592Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:31:29.626446Z 42 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:31:34.628647Z 42 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:31:34.667409Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:31:34.667451Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:32:34.752651Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:32:34.758961Z 44 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information. 2018-04-20T01:32:39.760085Z 44 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'mysql_innodb_cluster_r2418734901@sakila.local:3310' - retry-time: 60 retries: 1, Error_code: MY-002005 2018-04-20T01:32:39.805409Z 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.' 2018-04-20T01:32:39.805458Z 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.' 2018-04-20T01:32:39.805613Z 21 [ERROR] [MY-011574] [Repl] Plugin group_replication reported: 'Maximum number of retries when trying to connect to a donor reached. Aborting group replication recovery.' 2018-04-20T01:32:39.812690Z 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='sakila.local', master_port= 3310, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''. 2018-04-20T01:32:39.818107Z 21 [ERROR] [MY-011620] [Repl] Plugin group_replication reported: 'Fatal error during the recovery process of Group Replication. The server will leave the group.' 2018-04-20T01:32:45.458130Z 21 [ERROR] [MY-013173] [Repl] Plugin group_replication reported: 'The plugin encountered a critical error and will abort: Fatal error during execution of Group Replication' 01:32:45 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. Attempting to collect some information that could help diagnose the problem. As this is a crash and something is definitely wrong, the information collection process might fail. key_buffer_size=8388608 read_buffer_size=131072 max_used_connections=5 max_threads=151 thread_count=7 connection_count=2 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 67870 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x7fea160cb200 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 = 70000ecc1e00 thread_stack 0x46000 0 mysqld 0x0000000110e077bc my_print_stacktrace(unsigned char*, unsigned long) + 60 1 mysqld 0x00000001102664b6 handle_fatal_signal + 678 2 libsystem_platform.dylib 0x00007fffab590b3a _sigtramp + 26 3 ??? 0x0000000000000000 0x0 + 0 4 libsystem_c.dylib 0x00007fffab415420 abort + 129 5 group_replication.so 0x0000000132c69c2d abort_plugin_process(char const*) + 445 6 group_replication.so 0x0000000132c6c2b8 Recovery_module::leave_group_on_recovery_failure() + 2648 7 group_replication.so 0x0000000132c6cacc Recovery_module::recovery_thread_handle() + 1532 8 group_replication.so 0x0000000132c6b579 launch_handler_thread(void*) + 9 9 mysqld 0x00000001111fac5c pfs_spawn_thread(void*) + 316 10 libsystem_pthread.dylib 0x00007fffab59a93b _pthread_body + 180 11 libsystem_pthread.dylib 0x00007fffab59a887 _pthread_body + 0 12 libsystem_pthread.dylib 0x00007fffab59a08d thread_start + 13 Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0): is an invalid pointer Connection ID (thread ID): 21 Status: NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash.