虚拟机CentOS的Nginx+keepalived 高可用集群配置主从模式

1.关闭防火墙

停止防火墙服务

systemctl stop firewall.service

关闭开机自启

systemctl disable firewall.service

2.ip 准备

两台虚拟机 IP地址 需要不一样
例：主机：192.168.96.122
备用机：192.168.96.154
vip：192.168.96.155
vip 的ip地址后面的操作需要用到

3.关闭 selinux(安全子系统）

setenforce 0

编辑配置文件，关闭开机自启

vi /etc/selinux/config
将selinux=enforcing改为selinux=disabled

4.同时给主机安装keepalived

下载

wget https://www.keepalived.org/software/keepalived-1.4.5.tar.gz

解压

tar -zxvf keepalived-1.4.5.tar.gz

进入文件夹

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cd keepalived-1.4.5

预编译

./configure --prefix=usr/local/keepalived

安装

make && make install

5.将keepalived 注册为服务系统

cp keepalived/etc/init.d/keepalived /etc/init.d
cp keepalived/etc/sysconfig/keepalived /etc/sysconfig/

6.编辑配置文件

mkdir -p /etc/keepalived
cp/usr/local/keepalived/etc/keepalived/keepal/etc/keepalived/keepalived.conf
vi /etc/keepalived/keepalived.conf

主机

输入这两块内容

备用机

7.双机创建监控双机的nginx脚本

vi /opt/check_nginx.sh

9.双机安装psmisc

yum -y install psmisc

10.双机再次编译keepalived配置文件

vi /etc/keepalived/keepalived.conf

添加上如图代码

11.启动keepalived服务，并开机自启

systemctl start keepalived.service
systemctl enable keepalived.service

12.测试

修改主机欢迎界面 区分

vi /usr/local/nginx/html/index.html

在如图位置上加入Master

按照以上操作 仅只能实现分别使用ip地址进入网页界面无法使用vip：端口 进入欢迎界面

希望大家帮我看看，哪儿出错了！