Nginx基础

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关于Nginx

• 一款高性能、轻量级Web服务软件

  • 稳定性高

  • 系统资源消耗低

  • 对HTTP并发连接的处理能力高

  单台物理服务器可支持30000 ~ 50000个并发请求

Nginx编译安装

安装支持软件

[root@localhost opt] yum install gcc gcc-c++ make pcre-devel zlib-devel -y

创建运行用户、组

[root@localhost opt] useradd -M -s /sbin/nologin nginx

编译安装Nginx

• Nginx源码包下载

[root@localhost ~] mount.cifs //192.168.100.10/lnmp /mnt/    //将本地nginx源码包挂载到mnt目录下
[root@localhost ~] cd /mnt/
[root@localhost mnt] tar zxvf nginx-1.12.2.tar.gz -C /opt/    //解压源码包到opt目录  
[root@localhost mnt] cd /opt
[root@localhost opt] cd nginx-1.12.2/            //进入nginx安装包目录
[root@localhost nginx-1.12.2] ./configure --prefix=/usr/local/nginx \          //指定安装路径
--user=nginx \                       //指定程序用户
--group=nginx \                      //指定组
--with-http_stub_status_module       //关联状态统计模块    
[root@localhost nginx-1.12.2] make && make install       //配置、安装
[root@localhost nginx-1.12.2] cd /usr/local/nginx/sbin   //进入nginx安装后的命令目录
[root@localhost sbin] ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/   //建立软链接到sbin目录
[root@localhost sbin] nginx        //执行开启服务
[root@localhost conf]# netstat -ntap | grep 80        //查看服务端口是否开启      
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      31755/nginx: master 
[root@localhost sbin] systemctl stop firewalld.service    //关闭防火墙
[root@localhost sbin] setenforce 0                         //关闭增强性安全功能
[root@localhost sbin] yum install elinks -y      //安装检测网站工具
[root@localhost sbin] elinks http://localhost    //检测网站是否开启

优化运行控制

[root@localhost sbin]# vim /etc/init.d/nginx      //编辑运行控制脚本
#!/bin/bash
# chkconfig: - 99 20
# description: Nginx Service Control Script
PROG="/usr/local/nginx/sbin/nginx"
PIDF="/usr/local/nginx/logs/nginx.pid"
case "$1" in
  start)
   $PROG
   ;;
  stop)
   kill -s QUIT $(cat $PIDF)
   ;;
  restart)
   $0 stop
   $0 start
   ;;
  reload)
   kill -s HUP $(cat $PIDF)
   ;;
  *)
      echo "Usage: $0 {start|stop|restart|reload}"
      exit 1
esac
exit 0
:wq
[root@localhost sbin]# cd /etc/init.d
[root@localhost init.d]# chmod +x nginx           //给脚本添加执行权限
[root@localhost init.d]# chkconfig --add nginx    //将脚本添加到系统环境
[root@localhost init.d]# service nginx start      //使用service控制服务开启

配置文件

• 全局配置

#user nobody;
worker processes 1;
#error_ log logs/error.log;
#pid logs/nginx.pid;

• I/0事件配置

events {
   use epoll;
   worker_connections 4096;
}

• HTTP配置

http {
  ......
  access_log logs/access.log main;
  sendfile    on;
  ......
  keepalive_timeout 65;
  server {
     listen     80;
     server name www.bt.com;
     charset utf-8; 
     location / {
        root html;
        index index.html index.php; }
     error_page 500 502 503 504 /50x.html;
     location = /50x.html {
   root html;}}
}

Nginx的访问状态统计

启用HTTP STUB STATUS状态统计模块

• 配置编译参数时添加--with-http_ stub_ status_ module
• nginx -V查看已安装的Nginx是否包含HTTP_ STUB_ _STATUS模块

[root@localhost init.d]# cd /usr/local/nginx/conf/     //进入配置文件目录
[root@localhost conf]# vim nginx.conf            //编辑配置文件
...//省略部分内容...
server {
        listen       80;
        server_name  www.kgc.com;         //编辑域名

        charset utf-8;                    //编辑字符串格式为utf-8

        #access_log  logs/host.access.log;  //注释access日志文件

        location / {
            root   html;
            index  index.html index.htm;
        }
        location /status {
            stub_status on;       //开启功能统计模块
            access_log off;
        }
...//省略部分内容...
:wq                          //保存退出
[root@localhost conf]# yum install bind -y     //安装DNS服务
[root@localhost conf]# vim /etc/named.conf     //常规配置DNS功能
...//省略部分内容...
options {
        listen-on port 53 { any; };
        listen-on-v6 port 53 { ::1; };
        directory       "/var/named";
        dump-file       "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
        recursing-file  "/var/named/data/named.recursing";
        secroots-file   "/var/named/data/named.secroots";
        allow-query     { any; };
...//省略部分内容...
:wq
[root@localhost conf]# vim /etc/named.rfc1912.zones
...//省略部分内容...
zone "kgc.com" IN {
        type master;
        file "kgc.com.zone";
        allow-update { none; };
}; 
...//省略部分内容...
:wq
[root@localhost conf]# cd /var/named/
[root@localhost named]# cp -p named.localhost kgc.com.zone
[root@localhost named]# vim kgc.com.zone
$TTL 1D
@       IN SOA  @ rname.invalid. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      @
        A       127.0.0.1
www IN  A       192.168.144.133
:wq
[root@localhost named]# systemctl start named
[root@localhost named]# service nginx stop
[root@localhost named]# service nginx start

• 在客户机中打开浏览器输入域名www.kgc.com/status访问网站统计记录

授权的访问控制

• 配置步骤与Apache基本一致
  • 生成用户密码认证文件
  • 修改主配置文件对相应目录，添加认证配置项
  • 重启服务，访问测试

[root@localhost ~]# vim /usr/local/nginx/conf/nginx.conf
server {
        listen       80;
        server_name  www.kgc.com;

        charset utf-8;

        #access_log  logs/host.access.log;

        location / {
            auth_basic "secret";                          //插入设置密码验证
            auth_basic_user_file /usr/local/nginx/passwd.db;   //添加条目设置密码验证文件存放目录
            root   html;
            index  index.html index.htm;
        }
        location /status {
            stub_status on;
            access_log off;
        }
:wq
[root@localhost ~]# yum install httpd-tools -y       //安装生成密码设置文件
已加载插件：fastestmirror, langpacks
base                                                                                     | 3.6 kB  00:00:00   
extras                                                                                   | 2.9 kB  00:00:00 
...//省略部分内容...
已安装:
  httpd-tools.x86_64 0:2.4.6-90.el7.centos                                                                   
作为依赖被安装:
  apr.x86_64 0:1.4.8-5.el7                             apr-util.x86_64 0:1.5.2-6.el7                         
完毕！
[root@localhost ~]# htpasswd -c /usr/local/nginx/passwd.db test01    //创建密码验证文件
New password:                           //输入密码
Re-type new password:                   //再次输入       
Adding password for user test01          //创建用户成功
[root@localhost ~]# cat /usr/local/nginx/passwd.db     //查看创建的密码文件
test01:$apr1$T22NmXdU$yE8iwUxpaHcR95ZNosCUK0           //用户密码信息
[root@localhost ~]# service nginx stop           //停止nginx服务
[root@localhost ~]# service nginx start          //启动nginx服务
[root@localhost ~]# netstat -ntap | grep 80      //查看端口是否开启
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      8624/nginx:

• 再客户机中测试授权访问控制

Nginx基础

标签：process   img   fas   yum   编辑   exit   全局配置   info   rest   

原文地址：https://blog.51cto.com/14449563/2450851