keepalived实现nginx高可用

1.拓扑环境

nginx 主 10.1.60.155

nginx 从 10.1.60.157

2.去官网下载最新版本的keepalived，下载地址：http://www.keepalived.org/download.html

解压：tar zxvf keepalived-1.2.9.tar.gz

进入目录编译安装：

cd keepalived-1.2.9

./configure --prefix=/usr/local/keepalived

make

make install

复制命令到系统命令：

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

添加开机启动：

chkconfig keepalived on

编辑主nginx10.1.60.155keepalived配置文件：

cd /usr/local/keepalived/etc/keepalived/

cp keepalived.conf keepalived.conf.bak

cat keepalived.conf

! Configuration File for keepalived

global_defs {

notification_email {

x@a.com #邮件地址

}

notification_email_from keepalived157@a.com

smtp_server 10.1.60.155

smtp_connect_timeout 30

router_id LVS_DEVEL

}

vrrp_script chk_http_port {

script "/usr/local/keepalived/nginx_pid.sh"

interval 2

weight 2

}

track_script {

chk_http_port

}

vrrp_instance VI_1 {

state MASTER #这里是主所以填MASTER

interface eth0 #您的ip配在哪个网卡上就填哪个

virtual_router_id 100 #路由优先级值越大优先级越高

priority 100

advert_int 1

authentication {

auth_type PASS

auth_pass founder

}

track_interface {

eth0

}

virtual_ipaddress {

10.1.60.254 #虚拟vip ip

}

编辑从nginx10.1.60.157keepalived配置文件：