nginx+ keepalived+proxy_cache实现nginx高可用及高速缓存

ewr23

nginx+ keepalived+proxy_cache实现nginx高可用及高速缓存

环境：

master: 10.10.0.224
slave: 10.10.0.225
real server 1: 10.10.0.221
real server 2: 10.10.0.226
vip: 10.10.0.220

real server 事先安装好web服务
# yum install httpd -y
# cd /var/www/html
# touch test.html
# echo "10.10.0.221" > test.html    # real server1
# echo "10.10.0.226" > test.html    # real server2
Master/slave：
一、安装nginx
安装依赖
# yum install -y pcre pcre-devel gd gd-devel
# tar zcvf nginx-1.9.1.tar.gz
# cd nginx-1.9.1
# ./configure --prefix=/etc/nginx --with-http_ssl_module --with-http_spdy_module --with-http_stub_status_module --with-pcre
# make

# make install
二、配置文件修改
# cd /etc/nginx/conf
# vim nginx
#负载均衡
    upstream webs {
        server 10.10.0.221      weight=2;
        server 10.10.0.226      weight=1 max_fails=2 fail_timeout=2;
}
#设置缓存
proxy_cache_path /data/cache levels=1:2 keys_zone=one:20m max_size=1g;
    server {
        listen  80;
        server_name     www.a.com;
        location / {
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_pass    http://webs;

          add_header X-Via-IP $server_addr;
          add_header X-Cache-Status $upstream_cache_status;
          proxy_cache   one;
          proxy_cache_valid 200 302 301 304 10m;
        }
}

启动脚本
# vim /etc/init.d/nginx
#!/bin/bash
# it is nginx
# chkconfig: - 85 15
# discription: nginx is a high-performance web and proxy server
# date: 2015-6-2

nginxd=/etc/nginx/sbin/nginx
nginx_config=/etc/nginx/conf/nginx.conf
nginx_pid=/var/run/nginx.pid

RETVAL=0
prog="nginx"
. /etc/rc.d/init.d/functions
. /etc/sysconfig/network

[ ${NETWORKING} = no ] && exit 0
[ -x $ngind ] || exit 0

start() {
if [ -e $nginx_pid ]
then
  echo "nginx already running..."
  exit 1
fi

echo -n $"staring $prog: "
daemon $nginxd -c ${nginx_config}
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
return $RETVAL
}

stop() {
echo -n $"stopping $prog: "
killproc $nginxd
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /var/run/nginx.pid
}

reload() {
echo -n $"reloading $prog: "
killproc $nginxd -HUP
RETVAL=$?
echo
}

case "$1" in
start)
  start;;
stop)
  stop;;
reload)
  reload;;
restart)
  stop
  start
  ;;
status)
  status $prog
  RETVAL=$?;;
*)
  echo $"Usage:$prog{start|stop|status|reload|restart|help}"
  exit 1;;
esac
exit $RETVAL
# chmod +x /etc/init.d/nginx

# service nginx restart


三、测试



四、安装配置keepalived(这里采用yum安装)
# yum install -y keepalived
# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
   notification_email {
    # acassen@firewall.loc
   137290071@qq.com
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL1    #全局唯一，slave上需修改
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100    #slave需修改
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.10.0.220/12 dev eth0 label eth0:0
    }
}

五、开启服务，并开机启动
# service keepalived start
# chkconfig keepalived on
# chkconfig nginx on

六、测试