CentOS7之Nginx服务

环境说明

系统OS：CentOS7
IP: 192.168.1.7

---

配置过程

1. 创建 /etc/yum.repos.d/nginx.repo 文件，向里面添加内容：
   # vi /etc/yum.repos.d/nginx.repo

[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
gpgcheck=0
enabled=1

2. 执行yum安装
   # yum install nginx -y

3. 修改nginx配置文件，添加域名映射。
   # vi /etc/nginx/nginx.conf

user  root;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for" "$request_time"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;
    
    fastcgi_buffer_size 1024k; 
    fastcgi_buffers 6 256k; 
    fastcgi_busy_buffers_size 1024k; 
    client_max_body_size 100m;
    client_body_buffer_size 2048k;
    proxy_max_temp_file_size 0;
    proxy_buffering off;
    proxy_connect_timeout 172800;
    proxy_send_timeout 172800;
    proxy_read_timeout 60;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
    
    server{
        listen        80;
        server_name  cas.dimonho.com;  #将域名cas.dimonho.com映射到192.168.1.101的8080端口
        location / {
            proxy_pass http://192.168.1.101:8080;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            client_max_body_size 100m;
        }
    }
    server{
        listen        80;
        server_name  spis.dimonho.com;  #将域名spis.dimonho.com映射到192.168.1.101的18080端口
        location / {
            proxy_pass http://192.168.1.101:18080;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            client_max_body_size 100m;
        }
    }
    
}

4. 设置开机启动nginx服务
   # systemctl enable nginx

5. 启动nginx服务
   # systemctl start nginx

6. 设置防火墙允许80端口访问
   # firewall-cmd --add-port=80/tcp --permanent

路由器NAT映射

1. 访问192.168.1.1
2. 路由器登陆：admin/admin123

3. 虚拟NAT转发，添加NAT端口映射

   
   NAT

配置域名解析

1. 查看自己的公网IP

   
   公网IP

2. 注册一个域名，添加域名解析

   
   域名解析

3. 当访问 http://cas.dimonho.com 或 http://spis.dimonho.com 时，DNS服务器解析该域名找到IP 175.8.210.184， http://175.8.210.184:80 通过路由器NAT转发到 http://192.168.1.7:80 请求nginx服务，由nginx将 cas.dimonho.com 和 spis.dimonho.com 分别解析为请求内部的 http://192.168.1.101:8080 和http://192.168.1.101:18080 返回结果。

至此，一套完整的nginx服务流程才算完成。