OpenResty

什么是OpenResty

OpenResty（也称为 ngx_openresty）是一个全功能的 Web 应用服务器，它打包了标准 的Nginx 核心，很多的常用的第三方模块，以及它们的大多数依赖项。对于经常需要使用 nginx第三方模块的人来说，是一个非常不错的选择.

下载及安装

关于如何下载及安装OpenResty, 官网已经有很详细的介 绍，不再赘述。

添加开机启动脚本

1. 创建如下文件:

   $ cat /etc/init.d/nginx
   
   #!/bin/bash
   #
   # chkconfig: 2345 55 25
   # Description: Nginx init.d script, put in /etc/init.d, chmod +x /etc/init.d/nginx
   #              For Debian, run: update-rc.d -f nginx defaults
   #              For CentOS, run: chkconfig --add nginx
   #
   ### BEGIN INIT INFO
   # Provides:          nginx
   # Required-Start:    $all
   # Required-Stop:     $all
   # Default-Start:     2 3 4 5
   # Default-Stop:      0 1 6
   # Short-Description: nginx init.d script
   # Description:       OpenResty (aka. ngx_openresty) is a full-fledged web application server by bundling the standard Nginx core,
   #                    lots of 3rd-party Nginx modules, as well as most of their external dependencies.
   ### END INIT INFO
   #
   
   PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
   DESC="Nginx Daemon"
   NAME=nginx
   PREFIX=/etc/openresty/nginx
   DAEMON=$PREFIX/sbin/$NAME
   CONF=$PREFIX/conf/$NAME.conf
   PID=$PREFIX/logs/$NAME.pid
   SCRIPT=/etc/init.d/$NAME
   
   if [ ! -x "$DAEMON" ] || [ ! -f "$CONF" ]; then
       echo -e "\033[33m $DAEMON has no permission to run. \033[0m"
       echo -e "\033[33m Or $CONF doesn't exist. \033[0m"
       sleep 1
       exit 1
   fi
   
   do_start() {
       if [ -f $PID ]; then
           echo -e "\033[33m $PID already exists. \033[0m"
           echo -e "\033[33m $DESC is already running or crashed. \033[0m"
           echo -e "\033[32m $DESC Reopening $CONF ... \033[0m"
           $DAEMON -s reopen -c $CONF
           sleep 1
           echo -e "\033[36m $DESC reopened. \033[0m"
       else
           echo -e "\033[32m $DESC Starting $CONF ... \033[0m"
           $DAEMON -c $CONF
           sleep 1
           echo -e "\033[36m $DESC started. \033[0m"
       fi
   }
   
   do_stop() {
       if [ ! -f $PID ]; then
           echo -e "\033[33m $PID doesn't exist. \033[0m"
           echo -e "\033[33m $DESC isn't running. \033[0m"
       else
           echo -e "\033[32m $DESC Stopping $CONF ... \033[0m"
           $DAEMON -s stop -c $CONF
           sleep 1
           echo -e "\033[36m $DESC stopped. \033[0m"
       fi
   }
   
   do_reload() {
       if [ ! -f $PID ]; then
           echo -e "\033[33m $PID doesn't exist. \033[0m"
           echo -e "\033[33m $DESC isn't running. \033[0m"
           echo -e "\033[32m $DESC Starting $CONF ... \033[0m"
           $DAEMON -c $CONF
           sleep 1
           echo -e "\033[36m $DESC started. \033[0m"
       else
           echo -e "\033[32m $DESC Reloading $CONF ... \033[0m"
           $DAEMON -s reload -c $CONF
           sleep 1
           echo -e "\033[36m $DESC reloaded. \033[0m"
       fi
   }
   
   do_quit() {
       if [ ! -f $PID ]; then
           echo -e "\033[33m $PID doesn't exist. \033[0m"
           echo -e "\033[33m $DESC isn't running. \033[0m"
       else
           echo -e "\033[32m $DESC Quitting $CONF ... \033[0m"
           $DAEMON -s quit -c $CONF
           sleep 1
           echo -e "\033[36m $DESC quitted. \033[0m"
       fi
   }
   
   do_test() {
       echo -e "\033[32m $DESC Testing $CONF ... \033[0m"
       $DAEMON -t -c $CONF
   }
   
   do_info() {
       $DAEMON -V
   }
   
   case "$1" in
   start)
   do_start
   ;;
   stop)
   do_stop
   ;;
   reload)
   do_reload
   ;;
   restart)
   do_stop
   do_start
   ;;
   quit)
   do_quit
   ;;
   test)
   do_test
   ;;
   info)
   do_info
   ;;
   *)
   echo "Usage: $SCRIPT {start|stop|reload|restart|quit|test|info}"
   exit 2
   ;;
   esac
   
   exit 0
   

2. 给文件设置执行权限chmod +x /etc/init.d/nginx

3. 添加到开机启动

   • CentOS系统

     chkconfig --list nginx   # 列出系统nginx服务启动情况
     chkconfig --add nginx    # 添加nginx服务
     chkconfig --level 35 nginx on # 设定nginx在等级3和5为开机运行服务，--level 35表示操作只在等级3和5执行，on表示启动，off表示关闭
     

   • Debian系统

     sudo update-rc.d -f nginx remove  # 删除nginx服务
     sudo update-rc.d apache2 defaults # 添加nginx服务
     

使用logrotate切割日志

创建如下文件

$ cat /etc/logrotate.d/nginx
/etc/openresty/nginx/logs/*.log {
    daily
    missingok
    rotate 52
    dateext
    dateformat  -%Y-%m-%d
    compress
    delaycompress
    notifempty
    create 0640 www-data adm
    sharedscripts
    postrotate
        [ ! -f /etc/openresty/nginx/logs/nginx.pid ] || kill -USR1 `cat /etc/openresty/nginx/logs/nginx.pid`
    endscript
}

注释：

• /etc/openresty/nginx/logs/*.log 为OpenResty的log目录
• daily：每天轮询
• missingok: 如果日志丢失，不报错继续滚动下一个日志
• rotate 52：保留最多52次滚动的日志
• dateext：日期扩展
• dateformat: 日期格式
• compress：旧日志默认用gzip压缩
• notifempty:当日志为空时不进行滚动
• create: mode owner group 转储文件，使用指定的文件模式创建新的日志文件
• /etc/openresty/nginx/logs/nginx.pid：nginx主进程pid

测试:

$ logroate -f /etc/logrotate.d/nginx