Nginx介绍

• Nginx官网（http://nginx.org)，最新版1.13，最新稳定版1.12
• Nginx应用场景：web服务、反向代理、负载均衡
• Nginx著名分支，淘宝基于Nginx开发的Tengine，使用上和Nginx一致，服务名，配置文件名都一样，和Nginx的最大区别在于Tenging增加了一些定制化模块，在安全限速方面表现突出，另外它支持对js，css合并
• Nginx核心+lua相关的组件和模块组成了一个支持lua的高性能web容器openresty，参考 http://jinnianshilongnian.iteye.com/blog/2280928

Nginx安装

1. 进入存放源码包目录

[root@gary-tao ~]# cd /usr/local/src/
[root@gary-tao src]# 

2. 下载源码包

[root@gary-tao src]# wget http://nginx.org/download/nginx-1.12.1.tar.gz

3. 解压压缩包

[root@gary-tao src]# tar zxf nginx-1.12.1.tar.gz 

4. 安装nginx

[root@gary-tao src]# cd nginx-1.12.1
[root@gary-tao nginx-1.12.1]# ./configure --prefix=/usr/local/nginx

5. 编译nginx

[root@gary-tao nginx-1.12.1]# make
[root@gary-tao nginx-1.12.1]# make install
[root@gary-tao nginx-1.12.1]# ls /usr/local/nginx/ //查看nginx核心配置文件
conf  html  logs  sbin
[root@gary-tao nginx-1.12.1]# ls /usr/local/nginx/conf/
fastcgi.conf          fastcgi_params          koi-utf  mime.types          nginx.conf          scgi_params          uwsgi_params          win-utf
fastcgi.conf.default  fastcgi_params.default  koi-win  mime.types.default  nginx.conf.default  scgi_params.default  uwsgi_params.default
[root@gary-tao nginx-1.12.1]# ls /usr/local/nginx/html/
50x.html  index.html
[root@gary-tao nginx-1.12.1]# ls /usr/local/nginx/logs/
[root@gary-tao nginx-1.12.1]# ls /usr/local/nginx/sbin/
nginx
[root@gary-tao nginx-1.12.1]# ls /usr/local/nginx/sbin/nginx
/usr/local/nginx/sbin/nginx
[root@gary-tao nginx-1.12.1]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

6. 创建nginx配置文件及编辑启动脚本

[root@gary-tao nginx-1.12.1]# vim /etc/init.d/nginx配置如下内容：#!/bin/bash
# chkconfig: - 30 21
# description: http service.
# Source Function Library
. /etc/init.d/functions
# Nginx Settings
NGINX_SBIN="/usr/local/nginx/sbin/nginx"
NGINX_CONF="/usr/local/nginx/conf/nginx.conf"
NGINX_PID="/usr/local/nginx/logs/nginx.pid"
RETVAL=0
prog="Nginx"
start()
{echo -n $"Starting $prog: "mkdir -p /dev/shm/nginx_tempdaemon $NGINX_SBIN -c $NGINX_CONFRETVAL=$?echoreturn $RETVAL
}
stop()
{echo -n $"Stopping $prog: "killproc -p $NGINX_PID $NGINX_SBIN -TERMrm -rf /dev/shm/nginx_tempRETVAL=$?echoreturn $RETVAL
}
reload()
{echo -n $"Reloading $prog: "killproc -p $NGINX_PID $NGINX_SBIN -HUPRETVAL=$?echoreturn $RETVAL
}
restart()
{stopstart
}
configtest()
{$NGINX_SBIN -c $NGINX_CONF -treturn 0
}
case "$1" instart)start;;stop)stop;;reload)reload;;restart)restart;;configtest)configtest;;*)echo $"Usage: $0 {start|stop|reload|restart|configtest}"RETVAL=1
esac
exit $RETVAL

7.修改启动脚本权限

[root@gary-tao nginx-1.12.1]# chmod 755 /etc/init.d/nginx 

8. 添加nginx服务

[root@gary-tao nginx-1.12.1]# chkconfig --add nginx

9. 设置开机启动

[root@gary-tao nginx-1.12.1]# chkconfig nginx on

10. 配置nginx的配置文件

[root@gary-tao nginx-1.12.1]# cd /usr/local/nginx/conf/
[root@gary-tao conf]# ls
fastcgi.conf          fastcgi_params          koi-utf  mime.types          nginx.conf          scgi_params          uwsgi_params          win-utf
fastcgi.conf.default  fastcgi_params.default  koi-win  mime.types.default  nginx.conf.default  scgi_params.default  uwsgi_params.default
[root@gary-tao conf]# mv nginx.conf nginx.conf.bak
[root@gary-tao conf]# vim nginx.conf配置如下内容：user nobody nobody;
worker_processes 2;
error_log /usr/local/nginx/logs/nginx_error.log crit;
pid /usr/local/nginx/logs/nginx.pid;
worker_rlimit_nofile 51200;
events
{use epoll;worker_connections 6000;
}
http
{include mime.types;default_type application/octet-stream;server_names_hash_bucket_size 3526;server_names_hash_max_size 4096;log_format combined_realip '$remote_addr $http_x_forwarded_for [$time_local]'' $host "$request_uri" $status'' "$http_referer" "$http_user_agent"';sendfile on;tcp_nopush on;keepalive_timeout 30;client_header_timeout 3m;client_body_timeout 3m;send_timeout 3m;connection_pool_size 256;client_header_buffer_size 1k;large_client_header_buffers 8 4k;request_pool_size 4k;output_buffers 4 32k;postpone_output 1460;client_max_body_size 10m;client_body_buffer_size 256k;client_body_temp_path /usr/local/nginx/client_body_temp;proxy_temp_path /usr/local/nginx/proxy_temp;fastcgi_temp_path /usr/local/nginx/fastcgi_temp;fastcgi_intercept_errors on;tcp_nodelay on;gzip on;gzip_min_length 1k;gzip_buffers 4 8k;gzip_comp_level 5;gzip_http_version 1.1;gzip_types text/plain application/x-javascript text/css text/htm application/xml;server{listen 80;server_name localhost;index index.html index.htm index.php;root /usr/local/nginx/html;location ~ \.php$ {include fastcgi_params;fastcgi_pass unix:/tmp/php-fcgi.sock;fastcgi_index index.php;fastcgi_param SCRIPT_FILENAME /usr/local/nginx/html$fastcgi_script_name;}    }
}

11. 测试配置文件语法

[root@gary-tao conf]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

12. 开启Nginx

[root@gary-tao conf]# /etc/init.d/nginx start
Starting nginx (via systemctl):  Warning: nginx.service changed on disk. Run 'systemctl daemon-reload' to reload units.[  确定  ]
[root@gary-tao conf]# systemctl daemon-reload  //解决上面启动时报错
[root@gary-tao conf]# /etc/init.d/nginx start
Starting nginx (via systemctl):                            [  确定  ]

13. 查询nginx启动界面

[root@gary-tao conf]# ps aux |grep nginx
root      62748  0.0  0.0  20500   624 ?        Ss   18:51   0:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody    62749  0.0  0.3  22944  3212 ?        S    18:51   0:00 nginx: worker process
nobody    62750  0.0  0.3  22944  3212 ?        S    18:51   0:00 nginx: worker process
root      62835  0.0  0.0 112680   976 pts/1    S+   19:02   0:00 grep --color=auto nginx

[root@gary-tao conf]# curl localhost   //测试下页面
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>body {width: 35em;margin: 0 auto;font-family: Tahoma, Verdana, Arial, sans-serif;}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p><p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p><p><em>Thank you for using nginx.</em></p>
</body>
</html>
[root@gary-tao conf]# ls /usr/local/nginx/html/  //页面文件目录
50x.html  index.html

14.测试Nginx解析php

[root@gary-tao conf]# vim /usr/local/nginx/html/1.php 配置如下内容：<?php
echo "This is nginx test page.";
?>

使用curl测试

root@gary-tao conf]# curl localhost/1.php
This is nginx test page.[root@gary-tao conf]#
[root@gary-tao conf]#

Nginx默认虚拟主机

在Nginx中也有默认虚拟主机，跟httpd类似，第一个被Nginx加载的虚拟主机就是默认主机，但和httpd不相同的地方是，它还有一个配置用来标记默认虚拟主机，也就是说，如果没有这个标记，第一个虚拟主机为默认虚拟主机。

1. 编辑配置文件：

vim /usr/local/nginx/conf/nginx.conf 增加以下内容：include vhost/*.conf；

如图：

2. 创建一个vhost目录

[root@gary-tao conf]#  mkdir /usr/local/nginx/conf/vhost
[root@gary-tao conf]# cd /usr/local/nginx/conf/vhost/
[root@gary-tao vhost]# vim aaa.conf    //进入vhost目录下并创建编辑一个.conf文件增加如下内容：server
{listen 80 default_server;  // 有这个标记的就是默认虚拟主机server_name aaa.com;index index.html index.htm index.php;root /data/wwwroot/default;
}

3.创建default目录

[root@gary-tao vhost]# mkdir /data/wwwroot/default
[root@gary-tao vhost]# cd /data/wwwroot/default/
[root@gary-tao default]# ls
[root@gary-tao default]# vim index.html在default目录下的index.html文件中定义如下内容：This is the default site.

4.测试语法,重新加载配置文件（不需要重启服务）

[root@gary-tao default]# /usr/local/nginx/sbin/nginx -t //测试语法
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@gary-tao default]# /usr/local/nginx/sbin/nginx -s reload //重新加载配置

5.使用curl测试

[root@gary-tao default]# curl localhost
This is the default site.
[root@gary-tao default]# curl -x127.0.0.1:80 123.com
This is the default site.
[root@gary-tao default]# curl -x127.0.0.1:80 aaaa.com
This is the default site.
[root@gary-tao default]# curl -x127.0.0.1:80 ddd.com
This is the default site.

解释说明：

访问的域名无论是指定的aaa.com还是其它域名，只要解析过来，指向到我们服务器，都能访问到这个站点，这就是默认虚拟主机。

Nginx用户认证

1. 创建一个虚拟主机配置文件

[root@gary-tao conf]# vim /usr/local/nginx/conf/vhost/test.com.conf增加如下内容：server
{listen 80;server_name test.com;index index.html index.htm index.php;root /data/wwwroot/test.com;location  /{auth_basic              "Auth";auth_basic_user_file   /usr/local/nginx/conf/htpasswd;
}
}

2.创建密码文件

[root@gary-tao conf]# yum install -y httpd  //如果之前没有安装过Apache的话就安装httpd，是为了可以使用Apache的htpasswd工具创建用户
[root@gary-tao conf]# /usr/local/apache2.4/bin/htpasswd -c /usr/local/nginx/conf/htpasswd aming
备注：Apache自带命令htpasswd创建密码文件，-c是创建，-m是指定md5加密类型，指定用户为aming（备注：如果再次新增用户，就不需要再加 -c ，因为已经创建过密码文件了，加了会覆盖之前的创建好的用户）
New password:
Re-type new password:
Adding password for user aming
[root@gary-tao src]# cat /usr/local/nginx/conf/htpasswd
aming:$apr1$o3zygnex$U.fWNEyk7.OeiwK.hcsBw/
[root@gary-tao src]# /usr/local/apache2.4/bin/htpasswd  /usr/local/nginx/conf/htpasswd xie
New password:
Re-type new password:
Adding password for user xie
[root@gary-tao src]# cat /usr/local/nginx/conf/htpasswd
aming:$apr1$o3zygnex$U.fWNEyk7.OeiwK.hcsBw/
xie:$apr1$rBHXFLAp$fx9B2QPOtVQzLnz5hIWme1

3.测试语法及重新加载配置

[root@gary-tao src]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@gary-tao src]# /usr/local/nginx/sbin/nginx -s reload

4.使用curl命令测试用户认证

[root@gary-tao src]# curl -x127.0.0.1:80 test.com
<html>
<head><title>401 Authorization Required</title></head>
<body bgcolor="white">
<center><h1>401 Authorization Required</h1></center>
<hr><center>nginx/1.12.1</center>
</body>
</html>
[root@gary-tao src]# curl -x127.0.0.1:80 test.com -I
HTTP/1.1 401 Unauthorized
Server: nginx/1.12.1
Date: Wed, 03 Jan 2018 13:01:05 GMT
Content-Type: text/html
Content-Length: 195
Connection: keep-alive
WWW-Authenticate: Basic realm="Auth"
[root@gary-tao src]# curl -x127.0.0.1:80 -uaming:aming test.com -I  //增加用户访问
HTTP/1.1 404 Not Found
Server: nginx/1.12.1
Date: Wed, 03 Jan 2018 13:01:36 GMT
Content-Type: text/html
Content-Length: 169
Connection: keep-alive
[root@gary-tao src]# mkdir /data/wwwroot/test.com  //创建用户目录
[root@gary-tao src]# echo “test.com”>/data/wwwroot/test.com/index.html  //在test.com目录下编辑index.html
[root@gary-tao src]# curl -x127.0.0.1:80 -uaming:aming test.com
“test.com”

针对目录的用户认证

[root@gary-tao src]# vim /usr/local/nginx/conf/vhost/test.com.conf //进入配置文件，在location后面加上目录名字就可以

如图：

使用curl测试：

[root@gary-tao src]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@gary-tao src]# /usr/local/nginx/sbin/nginx -s reload
[root@gary-tao src]# curl -x127.0.0.1:80 test.com  //访问网站正常
“test.com”
[root@gary-tao src]# curl -x127.0.0.1:80 test.com/admin/ //但是访问admin目录下时就会出现401，需要用户认证
<html>
<head><title>401 Authorization Required</title></head>
<body bgcolor="white">
<center><h1>401 Authorization Required</h1></center>
<hr><center>nginx/1.12.1</center>
</body>
</html>
[root@gary-tao src]# mkdir /data/wwwroot/test.com/admin //创建目录地址
[root@gary-tao src]# echo "test.com adming dir" > /data/wwwroot/test.com/admin/index.html
[root@gary-tao src]# curl -x127.0.0.1:80 test.com/admin/
<html>
<head><title>401 Authorization Required</title></head>
<body bgcolor="white">
<center><h1>401 Authorization Required</h1></center>
<hr><center>nginx/1.12.1</center>
</body>
</html>
[root@gary-tao src]# curl -x127.0.0.1:80 -uaming:aming   test.com/admin/  //使用用户密码访问正常
test.com adming dir

针对文件的用户认证

[root@gary-tao src]# vim /usr/local/nginx/conf/vhost/test.com.conf //进入配置文件，在location后面加上匹配文件名字

如图：

使用curl测试,访问admin目录时是正常的，访问admin.php就需要用户认证了

[root@gary-tao src]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@gary-tao src]# /usr/local/nginx/sbin/nginx -s reload
[root@gary-tao src]# curl -x127.0.0.1:80 test.com/admin/
test.com adming dir
[root@gary-tao src]# curl -x127.0.0.1:80 test.com/admin.php
<html>
<head><title>401 Authorization Required</title></head>
<body bgcolor="white">
<center><h1>401 Authorization Required</h1></center>
<hr><center>nginx/1.12.1</center>
</body>
</html>

Nginx域名重定向

1. 更改test.com.conf

[root@gary-tao src]# vim /usr/local/nginx/conf/vhost/test.com.conf定义如下内容：server
{listen 80;server_name test.com test1.com test2.com;
//server_name后面支持写多个域名，这里要和httpd的做一个对比index index.html index.htm index.php;root /data/wwwroot/test.com;if ($host != 'test.com' ) {rewrite  ^/(.*)$  http://test.com/$1  permanent;
//permanent为永久重定向，状态码为301，如果写redirect则为302}
}

如图：

2. 测试语法及重新加载配置，使用curl测试

[root@gary-tao src]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@gary-tao src]# /usr/local/nginx/sbin/nginx -s reload
[root@gary-tao src]# curl -x127.0.0.1:80 test2.com/index.html -I   //访问test2.com后会跳转到test.com
HTTP/1.1 301 Moved Permanently
Server: nginx/1.12.1
Date: Wed, 03 Jan 2018 13:30:03 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
Location: http://test.com/index.html[root@gary-tao src]# curl -x127.0.0.1:80 test2.com/index.html/adgagadga -I  //访问test2.com后会跳转到test.com
HTTP/1.1 301 Moved Permanently
Server: nginx/1.12.1
Date: Wed, 03 Jan 2018 13:30:21 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
Location: http://test.com/index.html/adgagadga[root@gary-tao src]# curl -x127.0.0.1:80 test3.com/index.html/adgagadga -I  //访问test3.com就跳转到默认虚拟主机，报错404
HTTP/1.1 404 Not Found
Server: nginx/1.12.1
Date: Wed, 03 Jan 2018 13:30:38 GMT
Content-Type: text/html
Content-Length: 169
Connection: keep-alive