mysql主主复制配置：
HOSTNAME IPADDR PORT
节点1:my-prod01.oracle.com 192.168.10.97 3306
节点2:my-prod02.oracle.com 192.168.10.5 3306
1、修改my.cnf文件
节点1:
[mysqld]
server_id = 1
datadir = /data/mysql_3306/data
port = 3306
socket = /data/mysql_3306/run/mysql.sock
log-error=/data/mysql_3306/logs/mysqlerror.log
log-bin = /data/mysql_3306/logs/binlog
relay-log = /data/mysql_3306/logs/relaylog
binlog_format = row
skip-name-resolve
sync_binlog = 1
log_slave_updates = 1
read_only = 0
auto-increment-increment = 2
auto-increment-offset = 1
节点2:
[mysqld]
server_id = 2
datadir = /data/mysql_3306/data
port = 3306
socket = /data/mysql_3306/run/mysql.sock
log-error=/data/mysql_3306/logs/mysqlerror.log
log-bin = /data/mysql_3306/logs/binlog
relay-log = /data/mysql_3306/logs/relaylog
binlog_format = row
skip-name-resolve
sync_binlog = 1
log_slave_updates = 1
read_only = 0
auto-increment-increment = 2
auto-increment-offset = 2
#双主复制模式
auto_increment_offset表示自增长字段从哪个数开始,取值范围是1 .. 65535
auto_increment_increment表示自增长字段每次递增的量,其默认值是1,取值范围是1 .. 65535
在主主同步配置时,需要将两台服务器的auto_increment_increment增长量都配置为2,而要把auto_increment_offset分别配置为1和2.
这样避免两台服务器同时做更新时自增长字段的值之间发生冲突
mkdir -p /data/mysql_3306/data/logs/binlog
mkdir -p /data/mysql_3306/data/logs/relaylog
创建复制权限用户：
节点1:
mysql> GRANT replication slave ON *.* TO 'replicator'@'192.168.10.5' identified by 'replicator';
mysql> flush privileges;
mysql> show master status G
*************************** 1. row ***************************
File: binlog.000001
Position: 120
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
mysql> unlock tables;
Query OK, 0 rows affected (0.03 sec)
节点2:
mysql> GRANT replication slave ON *.* TO 'replicator'@'192.168.10.97' identified by 'replicator';
mysql> flush privileges;
mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)
mysql> show master status G
*************************** 1. row ***************************
File: binlog.000001
Position: 120
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
mysql> unlock tables;
Query OK, 0 rows affected (0.03 sec)
互为master:
节点1:
change master to master_host='192.168.10.5', master_port=3306, master_user='replicator',master_password='replicator', master_log_file='binlog.000001',master_log_pos=120;
mysql> start slave;
Query OK, 0 rows affected (0.02 sec)
mysql> show slave status G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.5
Master_User: replicator
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: binlog.000001
Read_Master_Log_Pos: 120
Relay_Log_File: binlog.000002
Relay_Log_Pos: 280
Relay_Master_Log_File: binlog.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: 120
Relay_Log_Space: 444
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: 98b6f1e4-7026-11e7-b381-e8611f1a5e44
Master_Info_File: /data/mysql_3306/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
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
1 row in set (0.00 sec)
节点2:
change master to master_host='192.168.10.97', master_port=3306, master_user='replicator',master_password='replicator', master_log_file='binlog.000001',master_log_pos=120;
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
mysql> show slave status G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.97
Master_User: replicator
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: binlog.000001
Read_Master_Log_Pos: 120
Relay_Log_File: binlog.000002
Relay_Log_Pos: 280
Relay_Master_Log_File: binlog.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: 120
Relay_Log_Space: 444
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: cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
Master_Info_File: /data/mysql_3306/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
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
1 row in set (0.00 sec)