mysql双主配置
mysql双主其实就是互相同步，互为主从
任意一台都能够执行插入动作
生产环境用得非常少，因为还是担心数据一致的问题
生产环境一般来说主从已经够用
172.19.132.121的配置，自增的话从1开始，每次递增2.数值是1,3,5,7……
[mysqld] bind-address=0.0.0.0 port=3306 datadir=/data/mysql socket=/data/mysql/mysql.sock user=mysql skip-name-resolve slow_query_log=on long_query_time=1 slow_query_log_file=/data/mysql/mysql-slow.log innodb-file-per-table=1 innodb_flush_log_at_trx_commit = 2 log_warnings = 1 connect_timeout = 60 net_read_timeout = 120 performance_schema_max_table_instances = 400 server-id = 1 log-bin=master-bin log-bin-index = master-bin.index relay-log = relay-log relay-log-index = relay-log.index binlog_format = ROW auto_increment_offset=1 auto_increment_increment=2 [mysqld_safe] log-error=/data/mysql/mysqld.log pid-file=/data/mysql/mysqld.pid
192.168.132.122的配置，自增的话从2开始，每次递增2，数值是2,4,6,8……
[mysqld] bind-address=0.0.0.0 port=3306 datadir=/data/mysql socket=/data/mysql/mysql.sock user=mysql skip-name-resolve slow_query_log=on long_query_time=1 slow_query_log_file=/data/mysql/mysql-slow.log innodb-file-per-table=1 innodb_flush_log_at_trx_commit = 2 log_warnings = 1 connect_timeout = 60 net_read_timeout = 120 performance_schema_max_table_instances = 400 server-id = 2 log-bin=master-bin log-bin-index = master-bin.index relay-log = relay-log relay-log-index = relay-log.index binlog_format = ROW auto_increment_offset=2 auto_increment_increment=2 [mysqld_safe] log-error=/data/mysql/mysqld.log pid-file=/data/mysql/mysqld.pid
防止索引一致，导致插入失败
重启数据库
先赋予对应的权限
192.168.132.121配置
mysql> grant replication slave on *.* to 'replication'@'192.168.132.122' identified by '1234567';
192.168.132.122配置
mysql> grant replication slave on *.* to 'replication'@'192.168.132.121' identified by '1234567';
启动互相同步
192.168.121操作
mysql> change master to master_host='192.168.132.122',master_port=3306,master_user='replication',master_password='1234567',master_log_file='master-bin.000001',master_log_pos=154; Query OK, 0 rows affected, 2 warnings (0.01 sec) mysql> start slave; Query OK, 0 rows affected (0.00 sec) mysql> show slave statusG; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.132.122 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000001 Read_Master_Log_Pos: 463 Relay_Log_File: relay-log.000002 Relay_Log_Pos: 630 Relay_Master_Log_File: master-bin.000001 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: 463 Relay_Log_Space: 831 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: 2 Master_UUID: 141defd2-9dab-11e9-8fe3-000c2963fd11 Master_Info_File: /data/mysql/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: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) ERROR: No query specified mysql> show mater logs; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'mater logs' at line 1 mysql> show master logs; +-------------------+-----------+ | Log_name | File_size | +-------------------+-----------+ | master-bin.000001 | 154 | +-------------------+-----------+
192.168.132.122操作
mysql> change master to master_host='192.168.132.121',master_port=3306,master_user='replication',master_password='1234567',master_log_file='master-bin.000001',master_log_pos=154; Query OK, 0 rows affected, 2 warnings (0.01 sec) mysql> start slave; Query OK, 0 rows affected (0.00 sec) mysql> show slave statusG; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.132.121 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000001 Read_Master_Log_Pos: 154 Relay_Log_File: relay-log.000002 Relay_Log_Pos: 321 Relay_Master_Log_File: master-bin.000001 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: 154 Relay_Log_Space: 522 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: 1 Master_UUID: 77278e78-9da8-11e9-bc6c-000c2991dd19 Master_Info_File: /data/mysql/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: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec)
查看进程
mysql> mysql> show processlist;
验证双主状态
132.121创建数据库 mysql> create database darren; Query OK, 1 row affected (0.00 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | darren | | mysql | | performance_schema | | sys | +--------------------+ 132.122查看并创建数据库 mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | darren | | mysql | | performance_schema | | sys | +--------------------+ mysql> create database darren1; Query OK, 1 row affected (0.00 sec) 132.121查看 mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | darren | | darren1 | | mysql | | performance_schema | | sys | +--------------------+
其他指令比较
132.121操作 mysql> use darren; Database changed mysql> create table test( id int primary key NOT NULL auto_increment, name varchar(200) ); Query OK, 0 rows affected (0.01 sec) mysql> show master logs; +-------------------+-----------+ | Log_name | File_size | +-------------------+-----------+ | master-bin.000001 | 554 | +-------------------+-----------+ 1 row in set (0.00 sec) 132.122插入一个数据 mysql> use darren; Database changed mysql> insert into test values (null, 'shijiange'); Query OK, 1 row affected (0.00 sec) 132.121查看 mysql> show binlog events in 'master-bin.000001'; #同步的数据没有记录到日志中来 +-------------------+-----+----------------+-----------+-------------+--------------------------------------------------------------------------------------------------+ | Log_name | Pos | Event_type | Server_id | End_log_pos | Info | +-------------------+-----+----------------+-----------+-------------+--------------------------------------------------------------------------------------------------+ | master-bin.000001 | 4 | Format_desc | 1 | 123 | Server ver: 5.7.26-log, Binlog ver: 4 | | master-bin.000001 | 123 | Previous_gtids | 1 | 154 | | | master-bin.000001 | 154 | Anonymous_Gtid | 1 | 219 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS' | | master-bin.000001 | 219 | Query | 1 | 324 | create database darren | | master-bin.000001 | 324 | Anonymous_Gtid | 1 | 389 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS' | | master-bin.000001 | 389 | Query | 1 | 554 | use `darren`; create table test( id int primary key NOT NULL auto_increment, name varchar(200) ) | +-------------------+-----+----------------+-----------+-------------+--------------------------------------------------------------------------------------------------+ mysql> select * from test; +----+-----------+ | id | name | +----+-----------+ | 2 | shijiange | #是以2开始，每次加2 +----+-----------+ 同时插入一条数据 mysql> insert into test values (null, UUID()); Query OK, 1 row affected (0.01 sec) mysql> select * from test; +----+--------------------------------------+ | id | name | +----+--------------------------------------+ | 2 | shijiange | | 3 | eb11d3b8-9e7d-11e9-8450-000c2991dd19 | #以奇数开始，每次加2 +----+--------------------------------------+ mysql> insert into test values (null, UUID()); Query OK, 1 row affected (0.01 sec) mysql> select * from test; +----+--------------------------------------+ | id | name | +----+--------------------------------------+ | 2 | shijiange | | 3 | eb11d3b8-9e7d-11e9-8450-000c2991dd19 | | 5 | f331ca26-9e7d-11e9-8450-000c2991dd19 | +----+--------------------------------------+ 132.122插入数据 mysql> insert into test values (null, UUID()); Query OK, 1 row affected (0.01 sec) mysql> select * from test; +----+--------------------------------------+ | id | name | +----+--------------------------------------+ | 2 | shijiange | | 3 | eb11d3b8-9e7d-11e9-8450-000c2991dd19 | | 5 | f331ca26-9e7d-11e9-8450-000c2991dd19 | | 6 | f8ca41f9-9e7d-11e9-ba37-000c2963fd11 | +----+--------------------------------------+ 4 rows in set (0.00 sec) mysql> insert into test values (null, UUID()); Query OK, 1 row affected (0.00 sec) mysql> select * from test; +----+--------------------------------------+ | id | name | +----+--------------------------------------+ | 2 | shijiange | | 3 | eb11d3b8-9e7d-11e9-8450-000c2991dd19 | | 5 | f331ca26-9e7d-11e9-8450-000c2991dd19 | | 6 | f8ca41f9-9e7d-11e9-ba37-000c2963fd11 | | 8 | 043f7a3f-9e7e-11e9-ba37-000c2963fd11 | +----+--------------------------------------+ 132.121插入数据
双主配置完成