mysql高可用架构 -> MHA环境准备

环境检查
[root@db01 bin]# cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core) 
[root@db01 bin]# uname -r
3.10.0-862.el7.x86_64
[root@db01 bin]# hostname -I
10.0.0.51 172.16.1.51 

mha环境准备
（准备三个节点，三台主机，分别修改如下的ip）

系统配置
hostnamectl set-hostname db01

nmcli connection modify eth0 ipv4.addresses 10.0.0.51/24
nmcli connection modify eth1 ipv4.addresses 172.16.1.53/24

nmcli connection down eth1 && nmcli connection up eth1
nmcli connection down eth0 && nmcli connection up eth0

cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
10.0.0.51  db01
10.0.0.52  db02
10.0.0.53  db03

mysql高可用架构 -> MHA环境准备

原文：https://www.cnblogs.com/tim1blog/p/9872428.html