MySQL主主同步
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主主同步原理同主从，不过是双向而已
1.修改1.4配置文件
vim /etc/my.cnf
#同时开始binlog和relay log
log-bin=mysql-bin
binlog_format=mixed
server-id = 1
sync_master_info = 1
sync_binlog = 1
innodb_support_xa = ON
relay_log= relay-log
relay_log_index=relay-log.index
skip_slave_start = ON
sync_relay_log = 1
sync_relay_log_info = 1
#定义偏移量
auto_increment_offset=1
auto_increment_increment=2
2.查看1.4日志POS点
MariaDB [(none)]> show master status\G
*************************** 1. row ***************************
File: mysql-bin.000002
Position: 662
Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
3.修改1.5配置文件
vim /etc/my.cnf
#同时开始binlog和relay log
log-bin=mysql-bin
binlog_format=mixed
server-id = 3
sync_master_info = 1
sync_binlog = 1
innodb_support_xa = ON
relay_log= relay-log
relay_log_index=relay-log.index
skip_slave_start = ON
sync_relay_log = 1
sync_relay_log_info = 1
#定义偏移量
auto_increment_offset = 2
4.查看1.5日志POS点
MariaDB [mysql]> show master status\G
*************************** 1. row ***************************
File: mysql-bin.000001
Position: 1073
Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
5.在1.4上添加复制用户
MariaDB [(none)]> grant replication slave,replication client on *.* to 'repa'@'192.168.1.5' identified by 'slavepass';
Query OK, 0 rows affected (0.09 sec)
6.在1.5上添加复制用户
MariaDB [mysql]> grant replication slave,replication client on *.* to 'repb'@'192.168.1.4' identified by 'slavepass';
Query OK, 0 rows affected (0.07 sec)
7.在1.4上开始同步复制
change master to master_host='192.168.1.5',master_user='repb',master_password='slavepass',master_log_file='mysql-bin.000001',master_log_pos=1073;
8.在1.5上开始同步复制
change master to master_host='192.168.1.4',master_user='repa',master_password='slavepass',master_log_file='mysql-bin.000002',master_log_pos=662;
9.查看1.4同步状态
MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.5
Master_User: repb
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 1073
Relay_Log_File: relay-log.000002
Relay_Log_Pos: 537
Relay_Master_Log_File: mysql-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: 1073
Relay_Log_Space: 829
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: 3
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative
1 row in set (0.00 sec)
10.查看1.5同步状态
MariaDB [mysql]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.4
Master_User: repa
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 662
Relay_Log_File: relay-log.000002
Relay_Log_Pos: 537
Relay_Master_Log_File: mysql-bin.000002
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: 662
Relay_Log_Space: 829
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_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative
1 row in set (0.00 sec)
11.在1.4上创建数据库及表
MariaDB [(none)]> create database prince;
Query OK, 1 row affected (0.09 sec)
MariaDB [(none)]> use prince;
Database changed
MariaDB [prince]> drop table Threek;
Query OK, 0 rows affected (0.13 sec)
创建表：
MariaDB [prince]> create table Threek(id int auto_increment primary key,name varchar(50));
Query OK, 0 rows affected (0.26 sec)
插入数据
MariaDB [prince]> insert into Threek (name) values('wukaka'),('ckl'),('love');
Query OK, 3 rows affected (0.06 sec)
Records: 3 Duplicates: 0 Warnings: 0MariaDB [prince]> select * from Threek;
+----+--------+
| id | name |
+----+--------+
| 1 | wukaka |
| 3 | ckl |
| 5 | love |
+----+--------+
3 rows in set (0.00 sec)
12.在1.5上插入数据
MariaDB [(none)]> use prince;
Database changed
查看表：
MariaDB [prince]> show tables;
+------------------+
| Tables_in_prince |
+------------------+
| Threek |
+------------------+
1 row in set (0.00 sec)
查看数据
MariaDB [prince]> select * from Threek;
+----+--------+
| id | name |
+----+--------+
| 1 | wukaka |
| 3 | ckl |
| 5 | love |
+----+--------+
3 rows in set (0.00 sec)
插入数据：
MariaDB [prince]> insert into Threek (name) values('stack'),('ayia'),('snow');
Query OK, 3 rows affected (0.06 sec)
Records: 3 Duplicates: 0 Warnings: 0
MariaDB [prince]> select * from Threek;
+----+--------+
| id | name |
+----+--------+
| 1 | wukaka |
| 3 | ckl |
| 5 | love |
| 6 | stack |
| 7 | ayia |
| 8 | snow |
+----+--------+
6 rows in set (0.00 sec)13.在1.4上查看数据
MariaDB [prince]> select * from Threek;
+----+--------+
| id | name |
+----+--------+
| 1 | wukaka |
| 3 | ckl |
| 5 | love |
| 6 | stack |
| 7 | ayia |
| 8 | snow |
+----+--------+
6 rows in set (0.00 sec)
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