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Keepalived + Haproxy + nginxKeepalived + Haproxy实验操作1、haproxy-master 192.168.138.1332、haproxy-slave 192.168.138.1313、浏览器访问验证，keepalived爆头验证4、对调度器Haproxy做健康检查

Keepalived + Haproxy + nginx

先是两台nginx服务器配置不同网站发布页面，便于区分 然后Haprox给nginx做负载均衡 最后keepalived给Haproxy做高可用 上一篇博客已经完成Haproxy给nginx做负载均衡，这一片博客主要是Keepalived给Haproxy实现高可用

Keepalived + Haproxy实验操作

1、haproxy-master 192.168.138.133

slave安装好haproxy后 [root@haproxy-master ~]# \scp /etc/haproxy/haproxy.cfg 192.168.138.131:/etc/haproxy/haproxy.cfg [root@haproxy-master ~]# vim /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { router_id director1 } vrrp_instance VI_1 { state MASTER interface ens33 virtual_router_id 80 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.138.200/24 } } [root@haproxy-master ~]# systemctl start keepalived [root@haproxy-master ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:e7:33:2b brd ff:ff:ff:ff:ff:ff inet 192.168.138.133/24 brd 192.168.138.255 scope global dynamic ens33 valid_lft 1244sec preferred_lft 1244sec inet 192.168.138.200/24 scope global secondary ens33 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fee7:332b/64 scope link valid_lft forever preferred_lft forever

2、haproxy-slave 192.168.138.131

[root@haproxy-slave ~]# yum -y install haproxy [root@haproxy-slave ~]# vim /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { router_id directory2 } vrrp_instance VI_1 { state BACKUP interface ens33 nopreempt virtual_router_id 80 priority 50 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.138.200/24 } } [root@haproxy-slave ~]# systemctl start keepalived

3、浏览器访问验证，keepalived爆头验证

验证vip访问是否正常 爆头验证

4、对调度器Haproxy做健康检查

[root@haproxy-master ~]# cat /etc/keepalived/check_haproxy.sh #!/bin/bash curl -I http://localhost &>/dev/null if [ $? -ne 0 ];then systemctl stop keepalived fi [root@haproxy-master ~]# vim /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { router_id director1 } vrrp_script check_haproxy { script "/etc/keepalived/check_haproxy.sh" interval 5 } vrrp_instance VI_1 { state MASTER interface ens33 virtual_router_id 80 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.138.200/24 } track_script { check_haproxy } }