安装Keepalived

1. 在官网下载Keepalived，https://www.keepalived.org/download.html

2. 将安装包上传到服务器的/mydata/keepalived目录

3. 解压安装包

   tar -zxvf keepalived-2.0.18.tar.gz

4. 安装 libnl/libnl-3依赖

   yum -y install libnl libnl-devel  

5. 解压后进入到解压路径，会看到configure，使用configure命令配置安装目录与核心配置文件所在位置

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

   prefix：keepalived安装的位置

   sysconf：keepalived核心配置文件所在位置，必须指定为/etc，改成其他位置则keepalived启动不了

6. 安装keepalived

   make && make install

将Keepalived注册为服务

当前情况下，我们需要进入到keepalived运行目录下才能启动keepalived，需要使用kill -9 停止keepalived，这样很不友好，下面介绍如何将Keepalived注册为服务。

进入Keepalived解压目录（不是安装目录）

拷贝，并覆盖目标目录下的文件

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

重新加载服务

systemctl daemon-reload

启动服务

systemctl start keepalived.service

停止服务

systemctl stop keepalived.service

重启服务

systemctl reststart keepalived.service