环境准备
- 四台虚拟机
- 安装Mysql8.0
- 配置如下
- 192.168.7.220 Nginx
- 192.168.7.221 主库
- 192.168.7.222 从库1
- 192.168.7.223 从库2
配置主库
#master 中my.cnf需要添加的内容
server-id=1
log-bin=mysql-bin
binlog_format=MIXED
sync_binlog=1
expire_logs_days=0
#拷贝数据库的名称,多个数据库多行
binlog-do-db=PetShop
#binlog-do-db=PetShop1
创建复制用户
mysql> create user 'slave'@'%' identified by '*************';
Query OK, 0 rows affected (0.00 sec)
授权
mysql> grant replication slave,replication client on *.* to 'slave'@'%';
Query OK, 0 rows affected (0.00 sec)
查看log_bin日志是否属于开启状态
mysql> show variables like 'log_bin';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin | ON |
+---------------+-------+
1 row in set (0.00 sec)
查看当前操作的宿主机是否为master状态
这里File和Position记录下来，配置从库需要
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 704 | PetShop | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
配置从库
配置server-id，注意不能与主库相同，server-id唯一，每个mysql节点一个
server-id=2
先关闭slave
mysql> stop slave;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
#master_host为master的ip
#master_password 为授权时设置的密码
#master_log_file 为show master status;结果中的file
#master_log_pos 为show master status;结果中的position
mysql> change master to master_host='192.168.7.221',master_port=3306,master_user='slave',master_password='Rgscasdzxc@123',master_log_file='mysql-bin.000001',master_log_pos=704;
Query OK, 0 rows affected, 9 warnings (0.03 sec)
开启slave
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)
查看配置结果
这两项表示配置成功,若是Slave_IO_Running为NO，则去查看master和slave的uuid是否一致，一般多发与复制虚拟机
Slave_IO_Running: Connecting
Slave_SQL_Running: Yes
#注意结尾没有分号
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Connecting to source
Master_Host: 192.168.7.221
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 704
Relay_Log_File: bare2-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Connecting
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: 704
Relay_Log_Space: 157
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 2061
Last_IO_Error: error connecting to master 'slave@192.168.7.221:3306' - retry-time: 60 retries: 9 message: Authentication plugin 'caching_sha2_password' reported error: Authentication requires secure connection.
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 0
Master_UUID:
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Replica has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 230214 11:45:03
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, 1 warning (0.00 sec)
