mysql5.6升级到5.7.13后开启多源复制遇到重复的channel name该怎么办
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一共三个数据库，原版本均为5.6，升级到5.7.13后开启多源复制，做成两主一从，发现channel name同名。
在从库执行reset slave all后，从库自动重启。
5.6 ---> 5.7.13:
5.6：
1 cd /usr/local/mysql ; scripts/mysql_install_db --user=mysql --defaults-file=/57data/my56.cnf
2 /usr/local/mysql/bin/mysqld_safe --defaults-file=/57data/my56.cnf &
3 mysqladmin -S /tmp/mysql3307.sock -u root -P3307 -p password
4 mysql -uroot -S /tmp/mysql3307.sock -pmysql
5 set global innodb_fast_shutdown=0;
6 mysqladmin -S /tmp/mysql3307.sock shutdown
5.7：
7 cd /usr/local/mysql57 ; ./bin/mysqld_safe --defaults-file=/57data/my.cnf &
8 cd /usr/local/mysql57 ; ./bin/mysql_upgrade -S /tmp/mysql3307.sock
9 cd /usr/local/mysql57 ; ./bin/mysqladmin -S /tmp/mysql3307.sock shutdown
10 cd /usr/local/mysql57 ; ./bin/mysqld_safe --defaults-file=/57data/my.cnf &
11 /usr/local/mysql57/bin/mysql -S /tmp/mysql3307.sock
12 grant replication slave,replication client on *.* to repl@'%' identified by 'passw0rd';
13
mysql> SET GLOBAL master_info_repository = 'TABLE';
Query OK, 0 rows affected (0.00 sec)
mysql> SET GLOBAL relay_log_info_repository = 'TABLE';
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> change master to master_host='vm2',
-> master_user='repl',
-> MASTER_PORT=3307,
-> master_password='passw0rd',
-> master_auto_position=1 FOR CHANNEL 'master_vm2';
change master to master_host='vm3',
master_user='repl',
MASTER_PORT=3307,
master_password='passw0rd',
Query OK, 0 rows affected, 2 warnings (0.08 sec)
mysql>
mysql> change master to master_host='vm3',
-> master_user='repl',
-> MASTER_PORT=3307,
-> master_password='passw0rd',
-> master_auto_position=1 FOR CHANNEL 'master_vm3';
Query OK, 0 rows affected, 2 warnings (0.04 sec)
mysql>
mysql>
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: vm2
Master_User: repl
Master_Port: 3307
Connect_Retry: 60
Master_Log_File:
Read_Master_Log_Pos: 4
Relay_Log_File: vm4-relay-bin-master_vm2.000001
Relay_Log_Pos: 4
Relay_Master_Log_File:
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 0
Relay_Log_Space: 154
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 0
Master_UUID:
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set: 45ee9543-2d51-11e6-ba5d-0800276e6667:1-2,
4acf2a8c-2d51-11e6-ba5d-080027806975:1-2,
4c01fc54-2d51-11e6-ba5d-08002781f86e:1-6
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name: master_vm2
Master_TLS_Version:
*************************** 2. row ***************************
Slave_IO_State:
Master_Host: vm3
Master_User: repl
Master_Port: 3307
Connect_Retry: 60
Master_Log_File:
Read_Master_Log_Pos: 4
Relay_Log_File: vm4-relay-bin-master_vm3.000001
Relay_Log_Pos: 4
Relay_Master_Log_File:
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 0
Relay_Log_Space: 154
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 0
Master_UUID:
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set: 45ee9543-2d51-11e6-ba5d-0800276e6667:1-2,
4acf2a8c-2d51-11e6-ba5d-080027806975:1-2,
4c01fc54-2d51-11e6-ba5d-08002781f86e:1-6
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name: master_vm2
Master_TLS_Version:
2 rows in set (0.00 sec)
ERROR:
No query specified
mysql>
mysql> select CHANNEL_NAME FROM performance_schema.replication_connection_status;
+--------------+
| CHANNEL_NAME |
+--------------+
| master_vm2 |
| master_vm2 |
+--------------+
2 rows in set (0.01 sec)
mysql> select CHANNEL_NAME FROM performance_schema.replication_connection_status;
+--------------+
| CHANNEL_NAME |
+--------------+
| master_vm2 |
| master_vm2 |
+--------------+
2 rows in set (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected (0.04 sec)
在两主库分别建数据库vm2和vm3,系统正常复制到从库。
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test |
| vm2 |
| vm3 |
+--------------------+
7 rows in set (0.00 sec)
在从库执行reset slave all，从库自动重启。
mysql> reset slave all;
ERROR 2013 (HY000): Lost connection to MySQL server during query
mysql> 2016-06-08T08:56:18.890685Z mysqld_safe Number of processes running now: 0
2016-06-08T08:56:18.906614Z mysqld_safe mysqld restarted
mysql>
mysql> reset slave all;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 2
Current database: *** NONE ***
Query OK, 0 rows affected (0.09 sec)
mysql> show slave status\G;
Empty set (0.01 sec)
ERROR:
No query specified
err log里channel name信息显示正确，但出现Thread pointer相关信息，如下：
2016-06-08T08:55:54.540373Z 4 [Note] Error reading relay log event for channel 'master_vm2': slave SQL thread was killed
2016-06-08T08:55:54.550729Z 3 [Note] Slave I/O thread killed while reading event for channel 'master_vm2'
2016-06-08T08:55:54.550814Z 3 [Note] Slave I/O thread exiting for channel 'master_vm2', read up to log 'mysql_bin.000005', position 653
2016-06-08T08:55:54.556301Z 6 [Note] Error reading relay log event for channel 'master_vm3': slave SQL thread was killed
2016-06-08T08:55:54.563404Z 5 [Note] Slave I/O thread killed while reading event for channel 'master_vm3'
2016-06-08T08:55:54.563549Z 5 [Note] Slave I/O thread exiting for channel 'master_vm3', read up to log 'mysql_bin.000005', position 653
08:56:18 UTC - 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.
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=1
max_threads=151
thread_count=1
connection_count=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 68189 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x7f9550000b10
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 = 7f9583175e28 thread_stack 0x40000
/usr/local/mysql57/bin/mysqld(my_print_stacktrace+0x35)[0xf25c45]
/usr/local/mysql57/bin/mysqld(handle_fatal_signal+0x4a4)[0x7b8604]
/lib64/libpthread.so.0[0x37f160f7e0]
/usr/local/mysql57/bin/mysqld(_ZN16Multisource_info9delete_miEPKc+0x2df)[0xf082ff]
/usr/local/mysql57/bin/mysqld(_Z11reset_slaveP3THDP11Master_infob+0x1c5)[0xef1e05]
/usr/local/mysql57/bin/mysqld(_Z11reset_slaveP3THD+0x2e2)[0xef21b2]
/usr/local/mysql57/bin/mysqld(_Z15reset_slave_cmdP3THD+0x98)[0xef2388]
/usr/local/mysql57/bin/mysqld(_Z20reload_acl_and_cacheP3THDmP10TABLE_LISTPi+0x30c)[0xd2ae3c]
/usr/local/mysql57/bin/mysqld(_Z21mysql_execute_commandP3THDb+0x83a)[0xcfaf2a]
/usr/local/mysql57/bin/mysqld(_Z11mysql_parseP3THDP12Parser_state+0x3cd)[0xcff97d]
/usr/local/mysql57/bin/mysqld(_Z16dispatch_commandP3THDPK8COM_DATA19enum_server_command+0x1099)[0xd00a79]
/usr/local/mysql57/bin/mysqld(_Z10do_commandP3THD+0x194)[0xd016e4]
/usr/local/mysql57/bin/mysqld(handle_connection+0x2a4)[0xdce6e4]
/usr/local/mysql57/bin/mysqld(pfs_spawn_thread+0x171)[0x121b951]
/lib64/libpthread.so.0[0x37f1607aa1]
/lib64/libc.so.6(clone+0x6d)[0x37f0ee893d]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7f95500054f0): is an invalid pointer
Connection ID (thread ID): 2
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.
2016-06-08T08:56:18.890685Z mysqld_safe Number of processes running now: 0
2016-06-08T08:56:18.906614Z mysqld_safe mysqld restarted