MARIADB的主从配置好像略有些区别，但总体和mysql的配置一个意思。
MYSQL5.7 加强了主从同步到性能。
配置参照：https://www.jianshu.com/p/6bb7bde1cd91 https://www.cnblogs.com/eleven24/p/7350000.html
性能调优：https://www.jianshu.com/p/6bb7bde1cd91
同步注意细节：http://coolnull.com/3145.html https://www.cnblogs.com/elontian/p/9933663.html
我的配置：
master
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
server-id=1
log-bin=mysql-bin
expire_logs_days=180
binlog-do-db=odsp_web
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
slave
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
server_id=2
replicate-do-db=odsp_web
replicate-ignore-db=mysql
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema
slave_parallel_workers=4
slave_parallel_type=LOGICAL_CLOCK
master_info_repository=TABLE
relay_log_info_repository=TABLE
relay_log_recovery=ON
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid