目录
[2.主库修改my.cnf 生效配置default-authentication-plugin=mysql_native_password](#2.主库修改my.cnf 生效配置default-authentication-plugin=mysql_native_password)
报错
Last_IO_Error: Error connecting to source 'repl_user@192.168.213.15:3306'. This was attempt 3/86400, with a delay of 60 seconds between attempts. Message: Authentication plugin 'caching_sha2_password' reported error: Authentication requires secure connection.
处理方法
1.从库停止同步
mysql> stop slave;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
2.主库修改my.cnf 生效配置default-authentication-plugin=mysql_native_password
root@ms-server1 \~\]# vi /etc/my.cnf # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/8.0/en/server-configuration-defaults.html \[mysqld
Remove leading # and set to the amount of RAM for the most important data
cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
innodb_buffer_pool_size = 128M
Remove the leading "# " to disable binary logging
Binary logging captures changes between backups and is enabled by
default. It's default setting is log_bin=binlog
disable_log_bin
Remove leading # to set options mainly useful for reporting servers.
The server defaults are faster for transactions and fast SELECTs.
Adjust sizes as needed, experiment to find the optimal values.
join_buffer_size = 128M
sort_buffer_size = 2M
read_rnd_buffer_size = 2M
Remove leading # to revert to previous value for default_authentication_plugin,
this will increase compatibility with older clients. For background, see:
https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_default_authentication_plugin
--把这行注释去掉
default-authentication-plugin=mysql_native_password
bind-address=0.0.0.0
default-storage-engine=Innodb
innodb_buffer_pool_size = 2048M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
server_id=1
log-bin=mysql-bin
3.重启服务重新创建复制用户
root@ms-server1 \~\]# systemctl restart mysqld 删除之前创建的复制用户 mysql\> drop user 'repl_user'@'%' ; Query OK, 0 rows affected (0.01 sec) 重新创建用户 use mysql create user 'repl_user'@'%' identified by 'Antute_123'; grant replication slave on \*.\* to 'repl_user'@'%'; flush privileges; ##### 4.重新同步 主库查看新状态 show master status\\G; mysql\> show master status\\G; \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 1. row \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* File: mysql-bin.000003 Position: 1023 Binlog_Do_DB: Binlog_Ignore_DB: Executed_Gtid_Set: 1 row in set (0.00 sec) ERROR: No query specified 从库修改my.cnf配置 default-authentication-plugin=mysql_native_password \[root@ms-server2 \~\]# vi /etc/my.cnf \[root@ms-server2 \~\]# cat /etc/my.cnf \[mysqld
default-authentication-plugin=mysql_native_password
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
server_id=2
log-bin=mysql-bin
重启数据库服务
root@ms-server2 \~\]# systemctl restart mysqld 按照主库当前的状态进行复制 CHANGE MASTER TO MASTER_HOST='192.168.213.15', MASTER_USER='repl_user' ,MASTER_PASSWORD='Antute_123',MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=1023; mysql\> stop slave; Query OK, 0 rows affected, 1 warning (0.01 sec) mysql\> CHANGE MASTER TO MASTER_HOST='192.168.213.15', MASTER_USER='repl_user' ,MASTER_PASSWORD='Antute_123',MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=1023; Query OK, 0 rows affected, 8 warnings (0.01 sec) mysql\> start slave; Query OK, 0 rows affected, 1 warning (0.01 sec) 重新查看状态同步正常 mysql\> show slave status\\G; \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 1. row \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Slave_IO_State: Waiting for source to send event Master_Host: 192.168.213.15 Master_User: repl_user Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 1023 Relay_Log_File: ms-server2-relay-bin.000002 Relay_Log_Pos: 326 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: Yes --显示yes为正常 Slave_SQL_Running: Yes --显示yes为正常 ##### 5.测试主从 主库 mysql\> show databases; +--------------------+ \| Database \| +--------------------+ \| antute_db \| \| information_schema \| \| mysql \| \| performance_schema \| \| sys \| +--------------------+ 5 rows in set (0.00 sec) mysql\> use antute_db; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql\> mysql\> show create table user\\G; \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 1. row \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Table: user Create Table: CREATE TABLE \`user\` ( \`id\` int NOT NULL AUTO_INCREMENT, \`username\` varchar(255) DEFAULT NULL COMMENT '用户名', \`role_id\` int DEFAULT NULL COMMENT '角色id', \`password\` varchar(255) DEFAULT NULL COMMENT '密码', \`salt\` varchar(255) DEFAULT NULL COMMENT '盐', PRIMARY KEY (\`id\`) ) ENGINE=InnoDB AUTO_INCREMENT=37794282 DEFAULT CHARSET=latin1 1 row in set (0.00 sec) ERROR: No query specified 主库插入一条数据 mysql\> insert into user values(1001,'dadada',10010,'abcd123','ssss'); Query OK, 1 row affected (0.00 sec) 从库查询该表 mysql\> use antute_db Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed 查询无误同步正常 mysql\> select \* from user; +------+----------+---------+----------+------+ \| id \| username \| role_id \| password \| salt \| +------+----------+---------+----------+------+ \| 1001 \| dadada \| 10010 \| abcd123 \| ssss \| +------+----------+---------+----------+------+ 1 row in set (0.00 sec) mysql\>