mysql的master和slave配备
发布时间：2022-01-19 13:42:59 所属栏目：MySql教程 来源：互联网
导读：这篇文章主要介绍mysql的master和slave配置，在日常操作中，相信很多人在mysql的master和slave配置问题上存在疑惑，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的master和slave配置的疑惑有所帮助！接下来，请跟着小编一起来学习吧
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这篇文章主要介绍“mysql的master和slave配置”，在日常操作中，相信很多人在mysql的master和slave配置问题上存在疑惑，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的master和slave配置”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！ mysql master和slave配置 一、master节点 master节点创建账号并授权 mysql> create user backup identified by '1234'; Query OK, 0 rows affected (0.02 sec) mysql> mysql> grant all on *.* to backup; Query OK, 0 rows affected (0.00 sec) mysql> mysql> master节点配置两个参数 [root@node2 ~]# vi /etc/my.cnf # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.7/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 leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # 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 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid validate_password = OFF server-id=1 log-bin=mysql-bin 重启mysqld服务 mysql> show master status -> ; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000001 | 154 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec) 二、slave节点配置 [root@node3 ~]# vi /etc/my.cnf # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.7/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 leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # 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 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid validate_password = OFF log_bin = mysql-bin server_id = 2 relay_log = mysql-relay-bin log_slave_updates = 1 read_only = 1 ~ 重启mysqld服务 [root@node3 ~]# service mysqld restart Stopping mysqld: [ OK ] Starting mysqld: [ OK ] [root@node3 ~]# [root@node3 ~]# [root@node3 ~]# 配置具体的参数 [root@node3 ~]# mysql -u root -proot mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 3 Server version: 5.7.10-log MySQL Community Server (GPL) Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> use mysql; 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> mysql> mysql> change master to master_host='192.168.10.11', -> master_user='backup', -> master_password='1234', -> master_log_file='mysql-bin.000001', -> master_log_pos=0; Query OK, 0 rows affected, 2 warnings (0.01 sec) mysql> show slave statusG *************************** 1. row *************************** Slave_IO_State: Master_Host: 192.168.10.11 Master_User: backup Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 4 Relay_Log_File: mysql-relay-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: mysql-bin.000001 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: 4 Relay_Log_Space: 154 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: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 0 Master_UUID: Master_Info_File: /var/lib/mysql/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: 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) 启动slave服务 mysql> start slave; Query OK, 0 rows affected (0.00 sec) 查看slave服务启动是否正常 mysql> mysql> mysql> show slave statusG *************************** 1. row *************************** Slave_IO_State: Master_Host: 192.168.10.11 Master_User: backup Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 4 Relay_Log_File: mysql-relay-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: No 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: 4 Relay_Log_Space: 154 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: 1593 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: 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: 160310 15:12:18 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) 看到slave服务有一个没有启动 Slave_IO_Running: No Slave_SQL_Running: Yes 查看mysql日志 报1593错误 2016-03-10T07:19:04.236362Z 6 [Warning] 2016-03-10T07:19:04.236675Z 7 [Warning] Slave SQL for channel '': If a crash happens this configuration does not guarantee that the relay log info will be consistent, Error_code: 0 2016-03-10T07:19:04.239318Z 7 [Note] Slave SQL thread for channel '' initialized, starting replication in log 'mysql-bin.000001' at position 4, relay log './mysql-relay-bin.000001' position: 4 2016-03-10T07:19:04.241677Z 6 [Note] Slave I/O thread for channel '': connected to master 'backup@192.168.10.11:3306',replication started in log 'mysql-bin.000001' at position 4 2016-03-10T07:19:04.249077Z 6 [ERROR] Slave I/O for channel '': , Error_code: 1593 2016-03-10T07:19:04.249110Z 6 [Note] Slave I/O thread exiting for channel '', read up to log 'mysql-bin.000001', position 4 三、1593错误处理 查看server_id是否重复，看到两个节点的server_id是不一样的。 mysql> show variables like '%server_id%'; +----------------+-------+ | Variable_name | Value | +----------------+-------+ | server_id | 1 | | server_id_bits | 32 | +----------------+-------+ 2 rows in set (0.00 sec) （编辑：武汉站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
