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(一)Keepalived安装
1.下载Keepalived 解压
2.cd Keepalived文件夹
3.执行 ./configure
4.执行 make && make install
(二)Keepalived+Nginx 高可用集群(主从模式)
1.配置两台nginx服务器,都安装Keepalived
2.修改第一台服务器的Keepalived配置
(1)cd /etc/keepalived
(2)修改keepalived.conf 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 90 # 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 }}
(3)在/usr/local/src 添加检测脚本
#!/bin/bashA=`ps -C nginx –no-header |wc -l`if [ $A -eq 0 ];then/usr/local/nginx/sbin/nginxsleep 2if [ `ps -C nginx --no-header |wc -l` -eq 0 ];thenkillall keepalivedfifi
(4)启动 keepalived:systemctl start keepalived.service
(5)输入 ip add检查
(三)Keepalived+Nginx 高可用集群(双主模式)
(1)修改第一台Keepalived.conf配置文件
global_defs {notification_email {381347268@qq.com}smtp_server 192.168.200.1smtp_connect_timeout 30router_id LVS_DEVEL}vrrp_instance VI_1 {state MASTERinterface ens33virtual_router_id 51priority 150advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.1.110/24 dev ens33 label ens33:1}}vrrp_instance VI_2 {state BACKUPinterface ens33virtual_router_id 52priority 100advert_int 1authentication {auth_type PASSauth_pass 2222}virtual_ipaddress {192.168.1.210/24 dev ens33 label ens33:2}}
(2)修改第二台Keepalived.conf配置文件
global_defs {notification_email {381347268@qq.com}smtp_server 192.168.200.1smtp_connect_timeout 30router_id LVS_DEVEL}vrrp_instance VI_1 {state BACKUPinterface ens33virtual_router_id 51priority 100advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.1.110/24 dev ens33 label ens33:1}}vrrp_instance VI_2 {state MASTERinterface ens33virtual_router_id 52priority 150advert_int 1authentication {auth_type PASSauth_pass 2222}virtual_ipaddress {192.168.1.210/24 dev ens33 label ens33:2}}
(3)其他操作和主从一样
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