mysql的高可用

##############mysql主从模式,高可用

db01: 10.0.0.51
db02: 10.0.0.52
db03: 10.0.0.53

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[root@db01 ~]# hostnamectl set-hostname db01
[root@db02 ~]# hostnamectl set-hostname db02
[root@db03 ~]# hostnamectl set-hostname db03

#修改主机名

[root@db01 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="none"
DEFROUTE="yes"
NAME="eth0"
DEVICE="eth0"
ONBOOT="yes"
IPADDR="10.0.0.51"
PREFIX="24"
GATEWAY="10.0.0.2"
DNS1="223.5.5.5"
#修改网卡配置

###修改网关