准备
- 主库：
192.168.137.10
- 备库：
192.168.137.11
MySQL 5.7
主库 192.168.137.10
- 安装好
MySQL
- 修改
/etc/mysql/my.cnf
[mysqld]
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name # 只同步哪个库
binlog_ignore_db = mysql # 不同步哪个库 默认是全部
binlog_format = row # binlog的格式 row 具有 statement和mixed 不具备的优势 填写 row
sync_binlog = 1
innodb_flush_log_at_trx_commit = 1 # 和 sync_binlog 组成双1 配置 保证数据的完整性
create user 'slave2'@'192.168.137.11' identified by '123456'; # 创建用户
grant replication slave on *.* to 'slave2'@'192.168.137.11'; # 赋予权限
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 2020 | | mysql | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
备库192.168.137.11
[mysqld]
server-id = 2
mysql> set global read_only=1;
Query OK, 0 rows affected (0.01 sec) # 备库只读
mysql> show slave status;
0 row in set (0.00 sec)
mysql> CHANGE MASTER TO
-> MASTER_HOST='192.168.137.10',
-> MASTER_USER='slave2',
-> MASTER_PASSWORD='123456',
-> MASTER_LOG_FILE='mysql-bin.000003', # 从master status上面取
-> MASTER_LOG_POS=2020; # 从 master status 上面取值
Query OK, 0 rows affected, 2 warnings (0.02 sec)
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: 192.168.137.10
Master_User: slave2
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 2589
Relay_Log_File: ubuntu-relay-bin.000002
Relay_Log_Pos: 889
Relay_Master_Log_File: mysql-bin.000003
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: 2589
Relay_Log_Space: 1097
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: a9f2f5ee-6697-11e9-8366-000c29d657d4
Master_Info_File: /var/lib/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)
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