Mysql高可用架构MHA搭建及测试故障转移_MySQL

MHA项目网站

https://code.google.com/p/mysql-master-ha/

一.环境介绍

1.主机部署

manager机:10.10.54.154
master机:10.10.54.156
slave1机:10.10.54.155(备用master)

slave2机:10.10.54.157

2.大致步骤
A.首先用ssh-keygen实现四台主机之间相互免密钥登录
B.安装MHAmha4mysql-node，mha4mysql-manager 软件包
C.建立master，slave1，slave2之间主从复制
D.管理机manager上配置MHA文件
E.masterha_check_ssh工具验证ssh信任登录是否成功
F.masterha_check_repl工具验证mysql复制是否成功
G.启动MHA manager,并监控日志文件
H.测试master(156)宕机后，是否会自动切换

3.说明：下面中括号中的主机名说明了当前操作是在哪台机子上进行的

二.首先用ssh-keygen实现四台主机之间相互免密钥登录

[manager机]
shell> ssh-keygen -t rsa -b 2048
shell> scp-copy-id root@10.10.54.155

shell> scp-copy-id root@10.10.54.156

shell> scp-copy-id root@10.10.54.157

在另外三台机子重复此步骤，使四台机子中的任何两台之间可以免密码登录

三.安装MHAmha4mysql-node，mha4mysql-manager 软件包

1.四台主机上安装MHAmha4mysql-node

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