MySQL5.7(5.6)GTID环境下恢复从库思(qi)路(yin)方(ji)法(qiao)
[zejin] 3301>show global variables like 'gtid_executed';
+---------------+-------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------+
| gtid_executed | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-15 |
+---------------+-------------------------------------------+
1 row in set (0.00 sec) [zejin] 3301>show global variables like 'gtid_purged';
+---------------+-------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------+
| gtid_purged | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-13 |
+---------------+-------------------------------------------+
1 row in set (0.00 sec)
mysqld_safe --defaults-file=/home/mysql/my3303.cnf &
此时新库3303上的状态应该是这样的: [(none)] 3303>show global variables like 'gtid_executed';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| gtid_executed | |
+---------------+-------+
1 row in set (0.01 sec) [(none)] 3303>show global variables like 'gtid_purged';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| gtid_purged | |
+---------------+-------+
1 row in set (0.00 sec)
mysql -uroot -h127.0.0.1 -p123 -P3303 < dump3301.sql
[(none)] 3303>show global variables like 'gtid_executed';
+---------------+-------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------+
| gtid_executed | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-15 |
+---------------+-------------------------------------------+
1 row in set (0.02 sec) [(none)] 3303>show global variables like 'gtid_purged';
+---------------+-------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------+
| gtid_purged | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-15 |
+---------------+-------------------------------------------+
1 row in set (0.00 sec)
[zejin] 3303>change master to master_host='192.168.1.240',master_port=3301,master_user='repl',master_password='123',master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.01 sec) [zejin] 3303>start slave;
Query OK, 0 rows affected (0.00 sec) [zejin] 3303>show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.240
Master_User: repl
Master_Port: 3301
Connect_Retry: 60
Master_Log_File: binlog57.000014
Read_Master_Log_Pos: 194
Relay_Log_File: zejin240-relay-bin.000002
Relay_Log_Pos: 365
Relay_Master_Log_File: binlog57.000014
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
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: 194
Relay_Log_Space: 575
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: 0
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: 3301
Master_UUID: a97983fc-5a29-11e6-9d28-000c29d4dc3f
Master_Info_File: /home/mysql/I3303/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
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: a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-15
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
[zejin] 3301>show global variables like 'gtid_executed';
+---------------+-------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------+
| gtid_executed | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-21 |
+---------------+-------------------------------------------+
1 row in set (0.00 sec) [zejin] 3301>show global variables like 'gtid_purged';
+---------------+-------------------------------------------+
| Variable_name | Value |
+---------------+-------------------------------------------+
| gtid_purged | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-20 |
+---------------+-------------------------------------------+
1 row in set (0.00 sec) [zejin] 3301>select * from t_users;
+----+------+
| id | name |
+----+------+
| 1 | chen |
| 2 | ok |
| 3 | li |
+----+------+
3 rows in set (0.00 sec)
在从库3303上,我们可以看到如下错误提示:
[zejin] 3303>show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.1.240
Master_User: repl
Master_Port: 3301
Connect_Retry: 60
Master_Log_File: binlog57.000014
Read_Master_Log_Pos: 457
Relay_Log_File: zejin240-relay-bin.000003
Relay_Log_Pos: 4
Relay_Master_Log_File: binlog57.000014
Slave_IO_Running: No
Slave_SQL_Running: Yes
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: 457
Relay_Log_Space: 194
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: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master has purged binary logs containing GTIDs that the slave requires.'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 3301
Master_UUID: a97983fc-5a29-11e6-9d28-000c29d4dc3f
Master_Info_File: /home/mysql/I3303/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 160809 17:25:39
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:16
Executed_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-16
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec) [zejin] 3303>select * from t_users;
+----+------+
| id | name |
+----+------+
| 1 | li |
| 2 | zhou |
+----+------+
2 rows in set (0.00 sec)
[zejin] 3303>change master to master_host='192.168.1.240',master_port=3302,master_user='repl',master_password='',master_auto_position=1; [zejin] 3303>start slave;
Query OK, 0 rows affected (0.03 sec) [zejin] 3303>show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.240
Master_User: repl
Master_Port: 3302
Connect_Retry: 60
Master_Log_File: binlog57.000007
Read_Master_Log_Pos: 1723
Relay_Log_File: zejin240-relay-bin.000002
Relay_Log_Pos: 1687
Relay_Master_Log_File: binlog57.000007
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
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: 1723
Relay_Log_Space: 1937
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: 0
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: 3302
Master_UUID: 5cee6f9f-5ab8-11e6-a081-000c29d4dc3f
Master_Info_File: /home/mysql/I3303/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:17-21
Executed_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-21
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec) [zejin] 3303>select * from t_users;
+----+------+
| id | name |
+----+------+
| 1 | chen |
| 2 | ok |
| 3 | li |
+----+------+
3 rows in set (0.00 sec) 数据也已经完全与主的一致了,复制正常后再change到3301master上。
[zejin] 3303>change master to master_host='192.168.1.240',master_port=3301,master_user='repl',master_password='',master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.01 sec) [zejin] 3303>start slave;
Query OK, 0 rows affected (0.00 sec)
[zejin] 3301>show global variables like '%gtid%';
+----------------------------------+-------------------------------------------+
| Variable_name | Value |
+----------------------------------+-------------------------------------------+ | gtid_executed | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-27 |
……
| gtid_purged | a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-25 |
……
+----------------------------------+-------------------------------------------+
8 rows in set (0.00 sec)
[zejin] 3303>show slave status \G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.1.240
Master_User: repl
Master_Port: 3301
Connect_Retry: 60
Master_Log_File: binlog57.000016
Read_Master_Log_Pos: 729
Relay_Log_File: zejin240-relay-bin.000003
Relay_Log_Pos: 4
Relay_Master_Log_File: binlog57.000016
Slave_IO_Running: No
Slave_SQL_Running: Yes
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: 729
Relay_Log_Space: 194
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: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master has purged binary logs containing GTIDs that the slave requires.'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 3301
Master_UUID: a97983fc-5a29-11e6-9d28-000c29d4dc3f
Master_Info_File: /home/mysql/I3303/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 160809 17:54:42
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:22
Executed_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-22
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
和之前同样类型的错误,我们恢复的思路为:
[zejin] 3303>set global GTID_PURGED="a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-26";
ERROR 1840 (HY000): @@GLOBAL.GTID_PURGED can only be set when @@GLOBAL.GTID_EXECUTED is empty.
正确操作步骤如下(在slave上执行):
[zejin] 3303>reset master;
Query OK, 0 rows affected (0.02 sec) [zejin] 3303>set global GTID_PURGED="a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-26";
Query OK, 0 rows affected (0.00 sec) [zejin] 3303>start slave;
Query OK, 0 rows affected (0.00 sec) [zejin] 3303>show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.240
Master_User: repl
Master_Port: 3301
Connect_Retry: 60
Master_Log_File: binlog57.000018
Read_Master_Log_Pos: 728
Relay_Log_File: zejin240-relay-bin.000004
Relay_Log_Pos: 718
Relay_Master_Log_File: binlog57.000018
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
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: 728
Relay_Log_Space: 968
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: 0
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: 3301
Master_UUID: a97983fc-5a29-11e6-9d28-000c29d4dc3f
Master_Info_File: /home/mysql/I3303/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:22:27
Executed_Gtid_Set: a97983fc-5a29-11e6-9d28-000c29d4dc3f:1-27
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
reset master
source dump3301.sql;
change master to master_host='192.168.1.240',master_port=3301,master_user='repl',master_password='',master_auto_position=1;
start slave;
show slave status\G
至此完成slave同步异常的恢复。
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