mysql+MHA+consul+ProxySQL高可用

Posted 2021-02-06 凯文队长

https://dzone.com/articles/consul-proxysql-and-mysql-ha?utm_medium=feed&utm_source=feedpress.me&utm_campaign=Feed:%20dzone

 

https://www.aliyun.com/jiaocheng/132307.html?spm=5176.100033.2.6.51e94d54AD4NcE

一、配置主从同步

 

1. 本例中主从ip及端口

Master：192.168.20.50:3306

Slave1：192.168.31.2:3306 （候选master）

Slave2：192.168.31.4:3306

 

2、安装mysql

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

yum -y install mysql57-community-release-el7-10.noarch.rpm

yum -y install mysql-community-server
systemctl start mysqld.service

grep "password" /var/log/mysqld.log

mysql -uroot -p  #登录

ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘My2019..‘;

#因为安装了Yum Repository，以后每次yum操作都会自动更新，需要把这个卸载掉

yum -y remove mysql57-community-release-el7-10.noarch

3. Slave配置参数
log-bin = mysql-bin

log-bin-index = mysql-bin.index

read_only=1 

relay_log_purge=0  #（一主一丛不需要此项，两从及以上建议开次参数，防止切换为成主库的从库自动删除中继日志后，无法给其他从库应用这部分日志）