① 环境筹备

本地装置两个mysql，或者应用虚拟机，或者应用docker装置，须要筹备两个mysql，本文应用docker装置，具体装置办法详见
https://www.jianshu.com/p/10769f985516

环境
宿主机 centos7
mysql:5.6
mysql1(master): 172.17.0.3:3307
mysql2(slave): 172.17.0.2:3308

② mysql 配置文件配置

mysql1(master): 172.17.0.3 my.cnf 配置文件设置，mysql

#mysql master1 config [mysqld]server-id = 1        # 节点ID，确保惟一# log configlog-bin = mysql-bin     #开启mysql的binlog日志性能sync_binlog = 1         #管制数据库的binlog刷到磁盘下来 , 0 不管制，性能最好，1每次事物提交都会刷到日志文件中，性能最差，最平安binlog_format = mixed   #binlog日志格局，mysql默认采纳statement，倡议应用mixedexpire_logs_days = 7                           #binlog过期清理工夫max_binlog_size = 100m                    #binlog每个日志文件大小binlog_cache_size = 4m                        #binlog缓存大小max_binlog_cache_size= 512m              #最大binlog缓存大binlog-ignore-db=mysql #不生成日志文件的数据库，多个疏忽数据库能够用逗号拼接，或者 复制这句话，写多行auto-increment-offset = 1     # 自增值的偏移量auto-increment-increment = 1  # 自增值的自增量slave-skip-errors = all #跳过从库谬误

mysql2(slave): 172.17.0.2 mysql.cnf 配置

[mysqld]server-id = 2log-bin=mysql-binrelay-log = mysql-relay-binreplicate-wild-ignore-table=mysql.%replicate-wild-ignore-table=test.%replicate-wild-ignore-table=information_schema.%

重启两个mysql，让配置失效

③ master数据库，创立复制用户并受权

1.进入master的数据库，为master创立复制用户

CREATE USER repl_user IDENTIFIED BY 'repl_passwd';

2.赋予该用户复制的权力

grant replication slave on *.* to 'repl_user'@'172.17.0.2'  identified by 'repl_passwd';FLUSH PRIVILEGES;

3.查看master的状态

show master status;mysql> show master status;+------------------+----------+--------------+------------------+-------------------+| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |+------------------+----------+--------------+------------------+-------------------+| mysql-bin.000005      120|              | mysql            |                   |+------------------+----------+--------------+------------------+-------------------+1 row in set (0.00 sec)

4,配置从库

mysql> CHANGE MASTER TO MASTER_HOST = '172.17.0.3',  MASTER_USER = 'repl_user', MASTER_PASSWORD = 'repl_passwd',MASTER_PORT = 3307,MASTER_LOG_FILE='mysql-bin.000005',MASTER_LOG_POS=120,MASTER_RETRY_COUNT = 60,MASTER_HEARTBEAT_PERIOD = 10000; # MASTER_LOG_FILE='mysql-bin.000005',#与主库File 保持一致# MASTER_LOG_POS=120 , #与主库Position 保持一致

启动从库slave过程

mysql> start slave;Query OK, 0 rows affected (0.04 sec)