4.4 KiB
4.4 KiB
一、基于二进制日志的复制
主节点配置：
[mysqld]
server-id = 226
# 开启二进制日志
log-bin=mysql-bin
从节点配置：
[mysqld]
server-id = 227
# 配置中继日志
relay_log = mysql-relay-bin
# 为了保证数据的一致性，从节点应该设置为只读
read_only = 1
# 以下两个配置代表是否开启二进制日志，如果存在其他节点需要从该从节点上复制数据，则开启，否则不用配置
log-bin = mysql-bin
# 是否将中继节点收到的复制事件写到自己的二进制日志中
log_slave_updates = 1
创建复制账号：
CREATE USER 'repl'@'192.168.0.%' IDENTIFIED WITH mysql_native_password BY '123456';
GRANT REPLICATION SLAVE on *.* TO 'repl'@'192.168.0.%' ;
查看主节点日志状态：
mysql> SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 887 | | | |
+------------------+----------+--------------+------------------+-------------------+
建立复制链路：
CHANGE MASTER TO MASTER_HOST='192.168.0.226',\
MASTER_USER='repl', \
MASTER_PASSWORD='123456',\
MASTER_LOG_FILE='mysql-bin.000001',\
MASTER_LOG_POS=887;
开始复制：
START SLAVE;
查看从节点复制状态：
mysql> SHOW SLAVE STATUS\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.226
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 887
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 322
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: 887
Relay_Log_Space: 530
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: 226
Master_UUID: e1148574-bdd0-11e9-8873-0800273acbfd
Master_Info_File: mysql.slave_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:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
1 row in set (0.00 sec)
二、基于 GTID 的复制
主从服务器均增加以下配置：
gtid-mode = ON
enforce-gtid-consistency = ON
在从服务器上执行以下命令，关闭原有复制链路：
STOP SLAVE IO_THREAD FOR CHANNEL '';
建立新的 GTID 复制链路：
CHANGE MASTER TO MASTER_HOST='192.168.0.226',\
MASTER_USER='repl',
MASTER_PASSWORD='123456',
MASTER_AUTO_POSITION=1;
开始复制：
START SLAVE;
查看从节点复制状态：
在主节点上执行任意修改操作，查看复制情况：
Retrieved_Gtid_Set: e1148574-bdd0-11e9-8873-0800273acbfd:1-2
Executed_Gtid_Set: e1148574-bdd0-11e9-8873-0800273acbfd:1-2