本文最后更新于 396 天前,其中的信息可能已经过时,如有错误请发送邮件到 wuxianglongblog@163.com
- 需要两台服务器
- 需要 keepalived
- 需要虚拟 ip
-
使用 yum 命令安装
-
安装完成之后,在 etc 里面生成 keepalived,有文件 keepalived.conf
- 修改
/etc/keepalived/keepalived.conf
配置文件
| global_defs { |
| |
| notification_email { |
| |
| acassen@firewall.loc |
| |
| failover@firewall.loc |
| |
| sysadmin@firewall.loc |
| |
| } |
| |
| notification_email_from Alexandre.Cassen@firewall.loc |
| |
| smtp_server 192.168.17.129 |
| |
| smtp_connect_timeout 30 |
| |
| router_id LVS_DEVEL |
| |
| } |
| |
| vrrp_script chk_http_port { |
| script "/usr/local/src/nginx_check.sh" |
| |
| interval 2 #(检测脚本执行的间隔) |
| |
| weight 2 |
| |
| } |
| |
| vrrp_instance VI_1 { |
| |
| state BACKUP # 备份服务器上将 MASTER 改为 BACKUP |
| |
| interface ens33 //网卡 |
| |
| virtual_router_id 51 # 主、备机的 virtual_router_id 必须相同 |
| |
| priority 100 # 主、备机取不同的优先级,主机值较大,备份机值较小 |
| |
| advert_int 1 |
| |
| authentication { |
| |
| auth_type PASS |
| |
| auth_pass 1111 |
| |
| } |
| |
| virtual_ipaddress { |
| |
| 192.168.17.50 // VRRP H 虚拟地址 |
| |
| } |
| |
| } |
- 在
/usr/local/src
添加检测脚本
| #!/bin/bash |
| A=`ps -C nginx –no-header |wc -l` |
| if [ $A -eq 0 ]; |
| then /usr/local/nginx/sbin/nginx |
| sleep 2 |
| if [ `ps -C nginx --no-header |wc -l` -eq 0 ]; |
| then killall keepalived |
| fi |
| fi |
- 把两台服务器上 nginx 和 keepalived 启动
启动 nginx
启动 keepalived
| systemctl start keepalived.service |
- 在浏览器地址栏输入虚拟地址 ip 192.168.17.50
- 把主服务器 (192.168.17.129) nginx 和 keepalived 停止,在输入 192.168.17.50