1.下载keepalived
进入keepalived官网下载界面，选择你所需要的版本下载即可
点击Version 2.0.6下载
或者通过 wget 命令进行下载
wget http://www.keepalived.org/software/keepalived-2.0.6.tar.gz
此处我将文件放在：/home/gnss 下，下面的举例及命令需要注意
2.解压文件
通过 tar 命令进行解压（第1步）的下载文件
cd /etc/gnss/
tar -zxvf keepalived-2.0.6.tar.gz
3.安装
进入解压文件下,执行 configure 命令，生成Makefile，为下一步的编译做准备
cd /home/gnss/keepalived-2.0.6
# --prefix：指定安装路径
./configure --prefix=/home/etc/keepalived
执行一下命令安装
make && make install
注意
若出现下面错误信息说明你未安装GCC，安装GCC即可
#错误信息
configure: error: no acceptable C compiler found in $PATH
See 'config.log' for more details.
#安装GCC
yum install -y gcc gcc-c++
#若出现错误信息说你未安装OpenSSL,执行下面命令安装即可
yum install -y openssl openssl-devel
4.将keepalived注册为系统服务
进入（第2步）的解压文件内，执行一下命令
cd /home/gnss/keepalived-2.0.6
#复制文件
cp keepalived/etc/init.d/keepalived /etc/init.d
cp keepalived/etc/sysconfig/keepalived /etc/sysconfig/
进入（第3步）的安装目录
cd /home/gnss/keepalived
mkdir /etc/keepalived
#复制文件
cp etc/keepalived/keepalived.conf /etc/keepalived/
5.验证是否安装成功
运行keepalived查看日志文件
systemctl start keepalived
#查看日志文件
tail /var/log/message
说明
- keepalived的日志输出默认是：/var/log/message 文件，我在网上找了下修改输出位置，都是修改/etc/sysconfig/keepalived 文件，配置rsyslog服务,然而并没有什么卵用，你们可以测试一下，若有找到其他方式的请评论
- centos7对keepalived操作的基本命令
#重新加载
systemctl daemon-reload
#设置开机自动启动
systemctl enable keepalived
#取消开机自动启动
systemctl disable keepalived
#启动
systemctl start keepalived
#停止
systemctl stop keepalived
#重启
systemctl restart keepalived
