wget http://www.keepalived.org/software/keepalived-1.4.0.tar.gz
tar zxf keepalived-1.4.0.tar.gz
cd keepalived-1.4.0/
./configure --sysconf=/etc --with-kernel-dir=/usr/lib/modules/3.10.0-514.26.2.el7.x86_64/

yum -y install libnl libnl-devel

yum install -y libnfnetlink-devel

make && make install

vim / etc/keepalived/keepalived.conf
! Configuration File for keepalivedglobal_defs {                       #全局配置notification_email {               #邮件通知acassen@firewall.loc              #多个收件人邮箱failover@firewall.locsysadmin@firewall.loc}notification_email_from Alexandre.Cassen@firewall.loc          #发件人邮箱smtp_server 192.168.200.1                  # SMTP_SERVER smtp_connect_timeout 30                     # 连接超时时间  router_id LVS_DEVEL                         # specify the name of the LVS director  本地有效#vrrp_skip_check_adv_addr #vrrp_strict#vrrp_garp_interval 0#vrrp_gna_interval 0
}
vrrp_script check_httpd {                     # 定义一个检查方法  对集群中的资源进行监控script "/etc/keepalived/check_httpd.sh"  # 一个脚本检查方法interval 2                           # 检查间隔 second}vrrp_instance VI_1 {           # VRRP 实例 实例名state MASTER                # master 模式interface enp0s3              # 绑定接口virtual_router_id 80         # 虚拟路由标识， 同一实例下 相同IDpriority 100                 # 优先级 越大越优advert_int 2                 # master 和 backup 之间检查时间间隔authentication {             auth_type PASS            # 认证类型  PASS /  AH  auth_pass 5211           # 密码， master 和 backup 必须相同}notify_master "/etc/keepalived/master.sh"     # 当成为主模式时候， 执行的脚本notify_backup "/etc/keepalived/backup.sh"     # 当成为 备模式时候， 执行脚本notify_fault "/etc/keepalived/fault.sh"       # 当成为 fault 模式， 执行脚本track_script {                       # 跟踪脚本check_httpd                      # 脚本名}virtual_ipaddress {                 # VIP192.168.1.200/24 dev enp0s3         }
}

state BACKUP
priority 80

[root@master keepalived]# cat check_httpd.sh
#!/bin/bash
killall -0 httpd[root@master keepalived]# cat master.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-test.log
echo "[master]" >> $LOGFILE
date >> $LOGFILE[root@master keepalived]# cat backup.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-test.log
echo "[Backup]" >> $LOGFILE
date >> $LOGFILE[root@master keepalived]# cat fault.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-test.log
echo "[Fault]" >> $LOGFILE
date >> $LOGFILE

firewalld-cmd --zero=public --permanent --add-port=80/tcp
firewall-cmd --direct --permanent --add-rule ipv4 filter INPUT 0 --in-interface enp0s8 --destination 224.0.0.18 --protocol vrrp -j ACCEPT
firewall-cmd --reload