主库172.30.6.2,从库172.30.6.114

主库的my.cnf文件加入
# 要使用同步功能, log-bin必须开启
log-bin=/data/bin-logs/master-log-bin
relay-log = /data/relay-logs/master-relay-bin

# 同步时主机的ServerID, 必须唯一.
server-id = 1 #唯一标识

从库的my.cnf文件加入
server-id = 2 #唯一标识
master-host = 172.30.6.2
master-user = replicate
master-password = replicate

log-bin = /data/bin-logs/master-log-bin
relay-log = /data/relay-logs/master-relay-bin

在主库和从库中建立bin-log目录
mkdir /data/bin-logs
mkdir /data/relay-logs
chown -R mysql:mysql /data/bin-logs
chown -R mysql:mysql /data/relay-logs

在主库中授权,操作这两个权限的时候一定要使用*.*全局操作
grant replication client on *.* to 'replicate'@'172.30.6.114' identified by 'replicate';
grant replication slave on *.* to 'replicate'@'172.30.6.114' identified by 'replicate';

注意:在启动主从同步的时候从库的状态一定要是主库开始记录bin-log时的状态,否则从库无法进行同步