案例扩展

公司社交网站上线后，上级领导对网站运维要求进一步提高，希望公司网站的可靠性与性能一并提高，要求使用keepalived对Nginx服务器做热备，VIP地址采用192.168.43.10。对Nginx服务器进行性能调优。

keepalived双机热备

1、增加一台服务器搭建Nginx做热备

2、两台Nginx服务器安装keepalived

yum -y install popt-devel kernel-devel openssl-devel gcc gcc-c++         //安装依赖包环境包tar zxvf keepalived-1.2.13.tar.gz -C /optcd /opt/keepalived-1.2.13./configure --prefix=/  --with-kernel-dir=/usr/src/kernels/2.6.32-431.e16x86_64make && maek installchkconfig --add keepalived    //加入到service管理器chkconfig keepalived on      //开机自启动

3、主Nginx服务器配置

cd /etc/keepalived/cp keepalived.conf keepalived.conf.bakvim keepalived.confglobal_defs {   notification_email {     acassen@firewall.loc     failover@firewall.loc     sysadmin@firewall.loc   }   notification_email_from Alexandre.Cassen@firewall.loc   smtp_server 127.0.0.1   smtp_connect_timeout 30   router_id LVS_01               //修改服务器名称//}vrrp_instance VI_1 {    state MASTER                  //主服务器类型//    interface ens33    virtual_router_id 10           //VRRP组号//    priority 100                   //优先级，备份Nginx服务器低于主//    advert_int 1    authentication {        auth_type PASS        auth_pass 123456    }    virtual_ipaddress {        192.168.43.10             //VIP//    }}service keepalived start       //开启keepalivedip addr show dev eth0            //可查看VIP，ipconfig看不到//

4、备Nginx服务器配置

global_defs {   notification_email {     acassen@firewall.loc     failover@firewall.loc     sysadmin@firewall.loc   }   notification_email_from Alexandre.Cassen@firewall.loc   smtp_server 127.0.0.1   smtp_connect_timeout 30   router_id LVS_02                   //修改服务器名称//}vrrp_instance VI_1 {    state BACKUP                    //修改服务器类型//    interface ens33    virtual_router_id 10    priority 99                     //修改优先级//    advert_int 1    authentication {        auth_type PASS        auth_pass 123456    }    virtual_ipaddress {        192.168.43.10                //VIP    }}service keepalived start       //开启keepalivedip addr show dev eth0            //可查看VIP，ipconfig看不到//

Nginx服务器优化

参考博客：