一、yum安装

1、安装Keepalived：

yum install -y keepalived

2、启动Keepalived服务：

systemctl start keepalived

3、设置Keepalived服务开机自启

systemctl enable keepalived

4、检查Keepalived服务状态：

systemctl status keepalived

二、源码(二进制)安装

1、安装依赖

yum -y install gcc openssl-devel libnfnetlink-devel libnl libnl-devel popt-devel make net-tools wget

2、安装包下载

mkdir -p /data/file	#创建文件
cd /data/file	#进入文件
wget https://keepalived.org/software/keepalived-2.2.7.tar.gz	#下载

3、查看及解压

ll #查看
tar -zxf keepalived-2.2.7.tar.gz

4、编译

cd keepalived-2.2.7	#进入源码包
./configure --prefix=/usr/local/keepalived	#编译

5、安装

make && make install

6、查找安装位置

find / -name keepalived

7、把 keepalived的启动文件复制到init.d下，加入开机启动项

cp /data/file/keepalived-2.2.7/keepalived/etc/init.d/keepalived /etc/rc.d/init.d/

8、复制启动服务至 /etc/sysconfig/

cp -r /data/file/keepalived-2.2.7/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

9、把 keepalived 加入系统命令目录

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

出现下面这几种情况，证明安装及配置都成功。因keepalived默认配置文件执行报错的原因

三、重点说明

        1、如果你要使用Keepalived，你需要编辑/etc/keepalived/keepalived.conf文件并授权chmod 644 keepalived.conf

        2、书写keepalived.conf文件时一定要查询你当前服务器的网卡是多少，命令可以采用ip addr，这个是centos7的

        3、具体的使用请看Redis主备及MySQL主备，如果还有疑问，请记得在评价里面说出问题，我好给你解决