Centos 7 build Nginx web server and virtual host configuration

Nginx developed specifically for performance optimization, its biggest advantage is its low stability and consumption of system resources, as well as high processing capacity http concurrent connections, a single physical server can support concurrent requests 20,000 to 50,000, is the case, providing a large number of social networking, news, e-commerce and web hosting, and service companies have chosen to provide Nginx web services, mainland China use nginx web site users are: Sina, Netease, Tencent, another well-known micro-blog Plurk also use nginx .

Nginx is a very high-performance Web cattle and reverse proxy server, which has had a lot of very superior characteristics:

高并发连接：官方测试能支撑5万并发连接，在实际生产环境中跑到2,~3W并发连接。

内存消耗少：在3W并发连接下，开启的10个NGINX进程才消耗150M内存（15M*10=150M）

配置文件非常简单：风格跟程序一样通俗易懂。

成本低廉:Nginx作为开源软件，可以免费使用，而购买F5 BIG-IP、NetScaler等硬件负载均衡交换机则需要十多万至几十万人民币。

支持rewrite重写规则：能够根据域名、URL的不同，将HTTP请求分发到不同的后端服务器群组。

内置的健康检查功能：如果Nginx Proxy后端的后台web服务器宕机了，不会影响前端访问。

节省带宽：支持GZIP压缩，可以添加浏览器本地缓存的Header头。

稳定性高：用于反向代理，宕机的概率微乎其微。

Nginx theoretical knowledge in which not much to say, here's get down to build Nginx web server:
1, a CentOS 7 server;
2, a CentOS 7 system tray;
3, the package need to use, here we are ready good one, extract links:
extraction connection

First, the site began to build Nginx:
1, mount the CD-ROM system initialization yum source

[root@Centos02 ~]# mount /dev/cdrom /mnt/     #挂载系统光盘

[root@centos02 ~]# mkdir /etc/yum.repos.d/bak  #创建系统yum备份目录

[root@centos02 ~]# mv /etc/yum.repos.d/CentOS-* /etc/yum.repos.d/bak/        
                #将系统自带的yum配置文件以Centos-开头的所有文件复制到bak目录中

[root@centos02 ~]# vim /etc/yum.repos.d/local.repo            #创建yum配置文件
[local]
name=centos
baseurl=file:///mnt
enabeld=1
gpgcheck=0

2, install nginx

[root@centos02 ~]# yum -y install pcre pcre-devel zlib-devel        #安装依赖程序

[root@centos02 ~]# umount /mnt/           #卸载系统光盘，切换软件包光盘
[root@centos02 ~]# mount /dev/cdrom /mnt/       #挂载软件包光盘

[root@centos02 ~]# tar zxvf /mnt/nginx-1.6.0.tar.gz -C /usr/src/  
                                            #将mnt目录中程序解压缩到/src

[root@centos02 ~]# useradd -M -s /sbin/nologin nginx         # 创建管理的nginx的用户

[root@centos02 ~]# cd /usr/src/nginx-1.6.0/            #编译安装nginx
[root@centos02 nginx-1.6.0]# ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_stub_status_module 

[root@centos02 nginx-1.6.0]# make && make install        #编译安装nginx

[root@centos02 nginx-1.6.0]# ln -s /usr/local/nginx/sbin/nginx* /usr/local/sbin/       
                                                     #优化执行命令

[root@centos02 ~]# echo "www.benet.com" > /usr/local/nginx/html/index.html    
                                              #修改新页面覆盖旧页面

[root@centos02 ~]# vim /usr/local/nginx/conf/nginx.conf      #设置Nginx最大并发
12 events {
13     worker_connections  4096;
14 }

Second, configure nginx web hosting

[root@Centos02 ~]# vim /usr/local/nginx/conf/nginx.conf   
                              #nginx配置虚拟主机www.benet.com
35     server {                            #Server表示虚拟主机
 36         listen       80;               #虚拟主机监听端口
 37         server_name  www.benet.com;             #虚拟主机域名
 38         charset utf-8;                      #支持字符编码
 39         access_log  logs/www.benet.com.access.log;        
                                        #成功日志位置/usr/local/nginx/logs/
 40         error_log  logs/www.benet.com.error.log;     #错误日志/usr/local/nginx/logs/
 41         location / {
 42             root   /var/www/benetcom/;          #网站根目录（默认/usr/local/nginx/html/）
 43             index  index.html index.htm;          #网站主页index.html或者index.htm
 44         }
 45                 }

[root@Centos02 ~]# mkdir -p /var/www/benetcom   
                            #创建www.benet.com虚拟主机网站根目录

[root@Centos02 ~]# echo "www.benet.com" > /var/www/benetcom/index.html       
                             #创建www.benet.com虚拟主机主页

[root@Centos02 ~]# vim /usr/local/nginx/conf/nginx.conf     
                                       #配置www.accp.com虚拟主机
47     server {                     #Server表示虚拟主机
48         listen       80;            #虚拟主机监听端口
49         server_name  www.accp.com;         #虚拟主机域名
50         charset utf-8;           #支持字符编码
51         access_log  logs/www.accp.com.access.log;   
                                          #成功日志位置/usr/local/nginx/logs/
52         error_log  logs/www.accp.com.error.log;    #错误日志/usr/local/nginx/logs/
53         location / {
54             root   /var/www/accpcom/;           #网站根目录（默认/usr/local/nginx/html/）
55             index  index.html index.htm;           #网站主页index.html或者index.htm
56         }
57                 }

[root@Centos02 ~]# mkdir -p /var/www/accpcom         
                                 #创建www.accp.com虚拟主机网站根目录

[root@Centos02 ~]# echo "www.accp.com" > /var/www/accpcom/index.html    
                                #设置www.accp.com虚拟主机网站主页

Third, start Nginx

[root@centos02 ~]# nginx        #启动nginx
[root@centos02 ~]# killall -s QUIT nginx      #停止nginx
[root@centos02 ~]# killall -s HUP nginx       #重新启动nginx

Fourth, the client-side validation Nginx, ensure that the client and server centos 7 network is interconnected, otherwise white torn, (where there is no need to manually add DNS set up host file, and subsequent updates LNMP LAMP re detailed configuration)
1, add a host file

2, Client Access