keepalived部署+示例

Keepalived软件层面解决静态网关单点风险，是vrrp协议的软件实现，设计目的是为了高可用ipvs服务

目录

一、实验环境

二、Keepalived相关文件

三、实验

实验一 虚拟路由的配置

实验二 虚拟路由的通讯设定

实验三 日志分离

实验四 独立子配置文件

实验五 非抢占模式和延迟抢占

1、非抢占模式

2、延迟抢占

实验六 单播模式设定

实验七 邮件通知

一、实验环境

四台RHEL7.9虚拟机，且保证防火墙和SELinux处于关闭状态

[root@realserver1 ~]# yum install httpd -y
[root@realserver1 ~]# echo 172.25.254.110 > /var/www/html/index.html
[root@realserver1 ~]# systemctl enable --now httpd
[root@realserver2 ~]# yum install httpd -y
[root@realserver2 ~]# echo 172.25.254.120 > /var/www/html/index.html
[root@realserver2 ~]# systemctl enable --now httpd

测试：

二、Keepalived相关文件

        软件包名:                keepalived

        主程序文件:            /usr/sbin/keepalived

        主配置文件:            /etc/keepalived/keepalived.conf

        配置文件示例:        /usr/share/doc/keepalived/

        Unit File:                /lib/systemd/system/keepalived.service

        Unit File环境配置文件:/etc/sysconfig/keepalived

三、实验

实验一 虚拟路由的配置

[root@ka1 ~]# yum install keepalived
[root@ka2 ~]# yum install keepalived
[root@ka1 ~]# rpm -ql keepalived
[root@ka1 ~]# vim /etc/keepalived/keepalived.conf 
[root@ka1 ~]# systemctl enable --now keepalived.service
[root@ka2 ~]# vim /etc/keepalived/keepalived.conf 
[root@ka2 ~]# systemctl enable --now keepalived.service

[root@ka1 ~]# tcpdump -i eth0 -nn host 224.0.0.18