# 让从服务器 能够访问主服务器
1，grant all privileges on *.* to ‘主服务器账号‘@‘从服务器IP‘ identified by ‘主服务器密码‘;

2，flush privileges;

3，SELECT DISTINCT CONCAT(‘User: ‘‘‘,user,‘‘‘@‘‘‘,host,‘‘‘;‘) AS query FROM mysql.user; // 查询当前用户

4，mysql -uroot -h主服务器的IP -p 主服务器的密码

5,主服务器配置
[mysqld]
log-bin=mysql-bin
log-bin=/www/db_logs/mysql-bin.log
server-id=1
binlog-do-db=ybk_db_1  #备份
binlog-ignore-db=mysql #不备份
binlog-ignore-db=ybk_db
binlog-ignore-db=ybk_db_2
binlog-ignore-db=ybk_db_bbs #不复制某个库

6,从服务器配置
server-id       = 2
master-connect-retry=60 #如果从服务器发现主服务器断掉，重新连接的时间差(秒)
replicate-do-db =ybk_db_1 #只复制某个库
replicate-ignore-db=mysql
replicate-ignore-db=ybk_db_2
replicate-ignore-db=ybk_db
replicate-ignore-db=ybk_db_bbs #不复制某个库
log_bin=/www/db_logs/mysql-bin.log
relay-log=slave-relay-bin

7，从服务器配置主服务器的一些信息
stop slave;
reset slave;
change master to master_host=‘182.92.230.121‘,master_user=‘copy‘,master_password=‘123456‘,master_log_file=‘mysql-bin.000004‘ ,master_log_pos=240;
change master to master_log_file=‘mysql-bin.000004‘,master_log_pos=240;
start slave;
SHOW SLAVE STATUS\G    show master status;

主从服务器的配置