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MySQL搭建主从报错“Theserverisnotconfiguredasslave“怎么解决

这篇文章主要介绍“MySQL搭建主从报错“The server is not configured as slave“怎么解决”,在日常操作中,相信很多人在MySQL搭建主从报错“The server is not configured as slave“怎么解决问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”MySQL搭建主从报错“The server is not configured as slave“怎么解决”的疑惑有所帮助!接下来,请跟着小编一起来学习吧!

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ERROR 1200 (HY000): The server is not configured as slave; fix in config file or with CHANGE MASTER TO
这里说,我没有配置为从机,但我明明配置过的啊。

MySQL版本:5.6.19
主:master IP  :  172.17.210.199
从:slave    IP :172.17.206.138

先看看从机172.17.206.138的my.cnf
[root@testmysql ~]# vi /etc/my.cnf
[mysqld]
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
skip-grant-tables
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
tmpdir=/tmp
[mysqld_safe]
log-error=/usr/local/data/mysqld.log
pid-file=/usr/local/mysql/data/mysqld.pid
###############以下是添加主从的配置
server_id = 2
log-bin = /usr/local/mysql/log/solve-bin.log
master-host = 172.17.210.199
master-user = my
master-pass = 123456
master-port = 3306
master-connect-retry = 60

这是MySQL主机172.17.210.199的my.cnf
[oracle@newbidb ~]$ cat /etc/my.cnf
[mysqld]
log-bin = /u01/mysql/log/masters-bin.log
read-only = 0
basedir = /u01/mysql
datadir = /u01/mysql/data
port = 3306
server_id = 1
socket = /tmp/mysql.sock
join_buffer_size = 128M
sort_buffer_size = 2M
read_rnd_buffer_size = 2M

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES


尝试过多次 重启主从还是报错;
接着手动chang to 后还是一样报错
mysql> CHANGE MASTER TO
MASTER_HOST='172.17.210.199',
MASTER_USER='my',
MASTER_PASSWORD='123456',
MASTER_LOG_FILE='masters-bin.000003',
MASTER_LOG_POS=120;
Query OK, 0 rows affected, 2 warnings (0.04 sec)

mysql> START slave;
ERROR 1200 (HY000): The server is not configured as slave; fix in config file or with CHANGE MASTER TO
mysql> SHOW slave STATUS \G
*************************** 1. row ***************************
               Slave_IO_State:
                  Master_Host: 172.17.210.199
                  Master_User: my
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: masters-bin.000003
          Read_Master_Log_Pos: 120
               Relay_Log_File: testmysql-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: masters-bin.000003
             Slave_IO_Running: No
            Slave_SQL_Running: No
              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
----------------略

于是查看日志
1.查看SLAVE172.17.206.138上的Mysql报错日志,有这么一句:
141009  6:06:29 [ERROR] Server id not set, will not start slave

意思是,slave的server-id没有设置。
那就奇怪了,我明明在配置文件里面指定了server-id的了,并且有重启mysql服务,难道不起效?
分别在主从上执行命令“show variables like 'server_id';”。

-------从机上面查看端口
mysql> mysql> SHOW VARIABLES LIKE 'server_id';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id     | 0     |
+---------------+-------+
1 row in set (0.00 sec)
我就纳闷呢,本来设置的是2,此时却是0,

-------主机上面查看
mysql> SHOW VARIABLES LIKE 'server_id';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id     | 1     |
+---------------+-------+
1 row in set (0.00 sec)
跟设置的一样。
既然参数文件不生效,就试试在数据库命令里面设置:

在从机 172.17.206.138上执行命令
mysql > SET GLOBAL server_id=2;
再次在从机 172.17.206.138上执行slave start和show slave status,成功了。
         注意!!!由于“SET GLOBAL server_id=;”命令会在mysql服务重启后丢失,所以一定要写到配置文件里面。
但为什么我之前修改了my.cnf文件不起效?
仔细排查,发现配置里面有[mysqld]和[mysqld_safe],新增的配置文件放的位置不一样也有关系?于是我尝试把配置文件改成这样:
"/etc/my.cnf" 24L, 467C written
[root@testmysql mysql]# cat  /etc/my.cnf
[mysqld]
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
skip-grant-tables
user=mysql
symbolic-links=0
tmpdir=/tmp
server_id = 2
log-bin = /usr/local/mysql/log/solve-bin.log
master-host = 172.17.210.199
master-user = my
master-pass = 123456
master-port = 3306
master-connect-retry = 60

[mysqld_safe]
log-error=/usr/local/data/mysqld.log
pid-file=/usr/local/mysql/data/mysqld.pid


修改之后,再次同步,成功了!
mysql>
mysql> STOP slave;
Query OK, 0 rows affected (0.05 sec)

mysql> START slave;
Query OK, 0 rows affected (0.00 sec)

到此,关于“MySQL搭建主从报错“The server is not configured as slave“怎么解决”的学习就结束了,希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习,快去试试吧!若想继续学习更多相关知识,请继续关注创新互联网站,小编会继续努力为大家带来更多实用的文章!


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