Linux for CentOS 下的 keepalived 安装与卸载以及相关命令操作之详细教程

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百度百科解释:

        keepalived 是一个类似于 layer3, 4 & 7 交换机制的软件,也就是我们平时说的第 3 层、第 4 层和第 7 层交换。Keepalived 的作用是检测 web 服务器的状态,如果有一台 web服务器死机,或工作出现故障,keepalived 将检测到,并将有故障的 web 服务器从系统中剔除,当web服务器工作正常后 keepalived 自动将 web 服务器加入到服务器群中,这些工作全部自动完成,不需要人工干涉,需要人工做的只是修复故障的 web 服务器。

1、安装

  • 方法一:yum 方式
    1. yum 安装
      #安装依赖包
       yum install -y curl gcc openssl-devel libnl3-devel net-snmp-devel
      #yum安装软件
       yum install -y keepalived
    1. 初始化及启动
      systemctl start keepalived   //启动 keepalived
      systemctl enable keepalived  //加入开机启动 keepalived
      systemctl restart keepalived  //重新启动 keepalived
      systemctl status keepalived   //查看 keepalived 状态

   方法二:源码包

1.mkdir /opt/software    #建立一个目录,用来存放软件包

2.cd /opt/software        #切换到该目录下

3.wget https://www.keepalived.org/software/keepalived-2.0.20.tar.gz   #联网下载,也可以windows下载好,上传进来

4.tar xvf keepalived-2.0.20.tar.gz

5.mv keepalived-2.0.20.tar.gz   /usr/local/src

6.cd /usr/local/src/keepalived-2.0.20 

 7

      yum install -y curl gcc openssl-devel libnl3-devel net-snmp-devel

      yum -y install openssl openssl-devel

      yum -y install libnl libnl-devel

      yum -y install libnfnetlink-devel

8.完成后会在以下路径生成:

/usr/local/keepalived/
/usr/local/keepalived/bin
/usr/local/keepalived/etc
/usr/local/keepalived/sbin
/usr/local/keepalived/share
---------------
---------------
/usr/local/keepalived/etc/keepalived/keepalived.conf
/usr/local/keepalived/etc/sysconfig/
/usr/local/keepalived/sbin/keepalived

9.初始化启动   

# keepalived 启动脚本变量引用文件,默认文件路径是 /etc/sysconfig/,也可以不做软链接,直接修改启动脚本中文件路径即可(安装目录下)
[root@localhost /]# cp /usr/local/keepalived/etc/sysconfig/keepalived  /etc/sysconfig/keepalived 
 
# 将keepalived 主程序加入到环境变量(安装目录下)
[root@localhost /]# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/keepalived
 
# keepalived 启动脚本(源码目录下),放到 /etc/init.d/ 目录下就可以使用 service 命令便捷调用
[root@localhost /]# cp /usr/local/src/keepalived-2.0.20/keepalived/etc/init.d/keepalived  /etc/init.d/keepalived
 
# 将配置文件放到默认路径下
[root@localhost /]# mkdir /etc/keepalived
[root@localhost /]# cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf

 

                              

  • 加为系统服务:           chkconfig   --add keepalived
  • 开机启动:                  chkconfig keepalived on
  • 查看开机启动的服务:chkconfig --list
  • 启动、关闭、重启 :      service keepalived start|stop|restart

 

卸载

 卸载keeplived工作路径

[root@localhost /]# cd /usr/local/src/keepalived      #源码所在目录(根据实际情况进入对应目录)
[root@localhost keepalived]#make uninstall 

删除相关文件,有时系统版本差异,删除的时候,先查看该路径是否存在文件,以免删除错误,要仔细了。不要复制我的路径

                     

#删除keepalived
[root@localhost /]# rm -f /usr/local/keepalived/sbin/keepalived
[root@localhost /]# rm -f /usr/local/keepalived/etc/rc.d/init.d/keepalived
[root@localhost /]# rm -f /usr/local/keepalived/etc/sysconfig/keepalived
[root@localhost /]# rm -rf /usr/local/keepalived/etc/keepalived
[root@localhost /]# rm -f /usr/local/keepalived/bin/genhash
[root@localhost /]# rm -rf /usr/local/keepalived
[root@localhost /]# rm -rf /etc/keepalived
[root@localhost /]# rm -f /etc/rc.d/init.d/keepalived
[root@localhost /]# rm -f /usr/sbin/keepalived 
[root@localhost /]# rm -f /etc/sysconfig/keepalived
[root@localhost /]# rm -f /etc/systemd/system/multi-user.target.wants/keepalived.service

测试是否卸载成功

[root@localhost /]# serive keepalived satrt
[root@localhost /]# systemctl start keepalived

当命令无效时,证明卸载成功。


相关操作命令

centOs:

          [root@localhost /]# systemctl start keepalived   -- 启动
          [root@localhost /]# systemctl stop keepalived   --关闭
          [root@localhost /]# ps aux|grep keepalived   --查看进程          



linux:
          [root@localhost /]# service  keepalived start  -- 启动
          [root@localhost /]# service keepalived stop    --关闭
          [root@localhost /]# ps aux|grep keepalived   --查看进程

 

    


  

 

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