nginx高可用

1

安装keepalived组件
 cd /usr/local/src
 wget http://www.keepalived.org/software/keepalived-1.2.13.tar.gz
 tar -zxvf keepalived-1.2.13.tar.gz
 cd keepalived-1.2.13
 ./configure 
 make && make install

设置启动

cp -r /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp -r /usr/local/etc/sysconfig/keepalived /etc/sysconfig/

mkdir -p /etc/keepalived                                                                                ——————创建keepalived默认配置路径
cp -r /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/            ———————把keepalived.conf模板拷贝到/etc/keepalived目录下
cp -r /usr/local/sbin/keepalived /usr/sbin/
启动keepalived
/etc/init.d/keepalived start

编辑监控脚本（用于监控主机是否宕机）

vim /etc/keepalived/check_nginx.sh
chmod +x /etc/keepalived/check_nginx.sh

#!/bin/bash
counter=(ps−Cnginx–no−heading|wc−l)if[“{counter}” = “0” ]; then
/usr/local/nginx
sleep 2
counter=(ps−Cnginx–no−heading|wc−l)if[“{counter}” = “0” ]; then
/etc/init.d/keepalived stop
fi
fi

keepalived配置文件

server1:上
vim /etc/keepalived/keepalived.conf

server2  server3

安装keepalived

编辑配置文件

在2 3虚拟机上编写html文件 用以区分结果