规划:
172.19.4.50 master
172.19.4.51 slave
安装mysql
版本:8.0.12
安装过程(略,参考安装mysql 8文档)
配置主从服务
修改master配置文件vim etc/my.cnf
[mysqld]log-bin=mysql-bin-9000 ----启用二进制日志binlog_format=mixed ----日志有三种格式,分别为Statement,MIXED,以及ROW,默认是Statementserver-id = 9000 ----数据库唯一标识,默认是1,一般取IP最后一段#bing-address=0.0.0.0port=3306log-slave-updates=1binlog-do-db =new_test---要记录的数据库名,多个可换行多次设置replicate-do-db =new_test ---(要复制的数据库名,多个可换行多次设置binlog-ignore-db=mysql ---不对mysql库进行日志记录操作 如下意思雷同binlog-ignore-db=sysbinlog-ignore-db=information_schemabinlog-ignore-db=performance_schemareplicate-ignore-db= mysql ---不对test进行复制操作 如下意思雷同replicate-ignore-db= sysreplicate-ignore-db=information_schemareplicate-ignore-db=performance_schema修改slave配置文件vim etc/my.cnf[mysqld]port=3306#bing-address=0.0.0.0log-bin=mysql-bin-9001 --根据id命名方便区分binlog_format=mixedserver-id=9001 --每个节点id都唯一read_only=1relay_log =/apps/mysql/log/mysql-relay-binlog_slave_updates = 1binlog-do-db =new_testreplicate-do-db =new_testbinlog-ignore-db=mysqlbinlog-ignore-db=sysbinlog-ignore-db=information_schemabinlog-ignore-db=performance_schemareplicate-ignore-db=sysreplicate-ignore-db=mysqlreplicate-ignore-db=information_schemareplicate-ignore-db=performance_schema
从库创建数据库和用户并赋权
create database new_test;create user 'test'@'%' identified with mysql_native_password by 'test';grant all privileges on new_test.* to 'test'@'%' with grant option;flush privileges;
创建复制用户
create user 'rep'@'172.18.%' identified with mysql_native_password by 'Dky78&cF';grant replication slave on *.* to 'rep'@'172.18.%';flush privileges;
主库恢复到备库
主库锁定所有表
mysql> FLUSH TABLES WITH READ LOCK;
备份数据库
mysqldump -uroot -proot001 new_test >/appl/backup/new_test.sql
通过scp将备份文件传到slave端
slave端进行数据恢复
mysql>use new_testmysql>source appl/backup/new_test.sql;
取消主库表锁定
mysql> UNLOCK TABLES;
开启主从同步
查询主库log_file和log_pos
mysql> show master logs;+-----------------------+-----------+| Log_name | File_size |+-----------------------+-----------+| mysql-bin-9000.000001 | 465767 |+-----------------------+-----------+1 row in set (0.00 sec)
从库执行chang master操作
mysql> CHANGE MASTER TO MASTER_HOST='172.19.4.50',MASTER_USER='rep',MASTER_PASSWORD='Dky78&cF',MASTER_PORT=3306,MASTER_LOG_FILE='mysql-bin-9000.000001',MASTER_LOG_POS= 465767;
启动从库,查看同步状态
mysql> start slave;mysql> show slave status\G
至此,完成主从搭建
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