CentOS mysql 主从配置.docx

MySQL 安装安装包（版本）：apache-tomcat-6.0.41.tar.gz安装包可以从 01/102 /usr/local/ 目录下获取，或通过网络下载。安装过程：百度搜索 “Linux mysql tar.gz 安装”主从配置主数据库 - 修改配置文件# vi /etc/f clientport=3306mysqldport=3306basedir = /usr/local/mysqldatadir = /usr/local/mysql/datacharacter-set-server=utf8log-error = /usr/local/mysql/data/error.logpid-file = /usr/local/mysql/data/mysql.piduser = mysqlsocket=/usr/local/mysql/mysql.sock#主从配置（主）log-bin=mysql-bin #启用二进制日志server-id=101 #服务器唯一ID，默认取IP最后一位log-bin=/var/log/mysql/updatelog #设定生成log文件名，文件路径需要手动创建并授权给mysql用户权限binlog-do-db=zjsz_full #二进制需要同步的数据库名称binlog-ignore-db=mysql,test #避免同步mysql用户配置expire-logs-days=7 #只保留7天的二进制日志mysqldefault-character-set=utf8socket=/usr/local/mysql/mysql.sockmysqldumpsocket=/usr/local/mysql/mysql.sockmysqladminsocket=/usr/local/mysql/mysql.sock主数据库 - 重启服务# mysqld restart主数据库 - 授权从数据库# mysql uroot pmysql use mysql;注意：如果提示没有权限或报错信息，那么可能是 root 权限在安装过程中丢失了，先退出，恢复 root 权限后再操作。mysql GRANT REPLICATION SLAVE ON *.* to root02 identified by mysql;mysql FLUSH TABLES WITH READ LOCK;注意：上面给数据库加锁了，在此状态下数据库只能进行查询操作。mysql show master status;+-+-+-+-+| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+-+-+-+-+| updatelog.000008 | 101800607 | zjsz_full | mysql,test |+-+-+-+-+1 row in set (0.00 sec)注意：拷贝 File 和 Postion 的值从数据库 数据备份将主数据库上的数据备份到从数据库上从数据库 修改配置文件# vi /etc/f clientport=3306mysqldport=3306basedir = /usr/local/mysqldatadir = /usr/local/mysql/datacharacter-set-server=utf8log-error = /usr/local/mysql/data/error.logpid-file = /usr/local/mysql/data/mysql.piduser = mysqlsocket=/usr/local/mysql/mysql.sock#主从配置（从）log-bin=mysql-bin #启用二进制日志server-id=102 #服务器唯一id，默认取IP最后一段expire_logs_days=7replicate-ignore-db=mysql #屏蔽对mysql库的同步replicate-do-db=zjsz_full #同步数据库的名称mysqldefault-character-set=utf8socket=/usr/local/mysql/mysql.sockmysqldumpsocket=/usr/local/mysql/mysql.sockmysqladminsocket=/usr/local/mysql/mysql.sock从数据库 重启服务# mysqld restart从数据库 执行同步语句# mysql uroot pmysql use mysql;mysql change master tomaster_host=01,master_user=root,master_password=mysql,master_log_file= updatelog.000008,master_log_pos=101800607;注意：此处的 master_log_file 和 master_log_pos 就是主数据库的 File 和 Postion 的值。从数据库 启动 slavemysql start slave;从数据库 主从同步检查mysql show slave status G;* 1. row *Slave_IO_State: Waiting for master to send eventMaster_Host: 01Master_User: rootMaster_Port: 3306Connect_Retry: 60Master_Log_File: updatelog.000008Read_Master_Log_Pos: 101800607Relay_Log_File: mysql-relay-bin.000002Relay_Log_Pos: 11015385Relay_Master_Log_File: updatelog.000008Slave_IO_Running: YesSlave_SQL_Running: YesReplicate_Do_DB: zjsz_fullReplicate_Ignore_DB: mysqlReplicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 101800607Relay_Log_Space: 11015541Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0Master_SSL_Verify_Server_Cert: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1011 row in set (0.00 sec)注意：Slave_IO_Running 和 Slave_SQL_Running 都为 YES 时，主从同步配置完成，如果为NO，则需要查看相应的报错信息。主数据库 解锁mysql UNLOCK TABLES;同步错误处理先锁住主数据库，获取主数据库的 File 和 Postion 数据。登录从数据库，停止同步（stop slave），重新执行同步语句。退出，重启从数据库。最后，解锁主数据