通过Nginx解决网络隔离实践记录详解

# 下载
[work@40-10-14 opt]$ wget http://nginx.org/download/nginx-1.18.0.tar.gz
# 解压文件
[work@40-10-14 opt]$ tar -xvf nginx-1.18.0.tar.gz

# 1. 默认安装：root权限进入解压后的目录，执行如下命令安装
[root@40-10-14 nginx-1.18.0]# ./configure && make && make install

# 2.指定目录：安装到指定的/opt/nginx目录
[work@40-10-14 opt]$ mkdir /opt/nginx
[work@40-10-14 nginx-1.18.0]$ ./configure --prefix=/opt/nginx && make && mae install

mkdir: cannot create directory `/usr/local/nginx': Permission denied
make[1]: *** [install] Error 1
make[1]: Leaving directory `/opt/nginx-1.18.0'
make: *** [install] Error 2

[root@40-10-14 opt]# whereis nginx
nginx: /usr/local/nginx

# 添加软链
[root@40-10-14 sbin]# ln -s /opt/nginx/sbin/nginx /usr/local/bin/
# 查看版本
[root@40-10-14 sbin]# nginx -v
nginx version: nginx/1.18.0

# 查看linux进程id
[root@40-10-14 ~]# ps -ef | grep nginx
nobody  45198   1 0 16:12 "color: #ff0000">配置代理


配置两台机器的请求转发,编辑nginx安装目录下的nginx/conf/nginx.conf文件即可


#user nobody;
worker_processes 1;

#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;

#pid    logs/nginx.pid;


events {
  worker_connections 1024;
}


http {
  include    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"';

  #access_log logs/access.log main;

  sendfile    on;
  #tcp_nopush   on;

  #keepalive_timeout 0;
  keepalive_timeout 65;

  #gzip on;

  # 请求需要转发到如下两台机器上，流量平分;指定IP和端口
  upstream zpserver  {
       server  xx.xx.xx.22:10001;
       server  xx.xx.xx.23:10001;
  }

  server {
    # nginx服务端口为80
    listen    80;
    server_name localhost;

    #charset koi8-r;

    #access_log logs/host.access.log main;

    # /user根路径的请求才转发
    location /user {
      root  html;
      index index.html index.htm;
      proxy_pass    http://zpserver;
    }

    #error_page 404       /404.html;

    # redirect server error pages to the static page /50x.html
    #
    error_page  500 502 503 504 /50x.html;
    location = /50x.html {
      root  html;
    }

    # proxy the PHP scripts to Apache listening on 127.0.0.1:80
    #
    #location ~ \.php$ {
    #  proxy_pass  http://127.0.0.1;
    #}

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    #location ~ \.php$ {
    #  root      html;
    #  fastcgi_pass  127.0.0.1:9000;
    #  fastcgi_index index.php;
    #  fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
    #  include    fastcgi_params;
    #}

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #  deny all;
    #}
  }


  # another virtual host using mix of IP-, name-, and port-based configuration
  #
  #server {
  #  listen    8000;
  #  listen    somename:8080;
  #  server_name somename alias another.alias;

  #  location / {
  #    root  html;
  #    index index.html index.htm;
  #  }
  #}


  # HTTPS server
  #
  #server {
  #  listen    443 ssl;
  #  server_name localhost;

  #  ssl_certificate   cert.pem;
  #  ssl_certificate_key cert.key;

  #  ssl_session_cache  shared:SSL:1m;
  #  ssl_session_timeout 5m;

  #  ssl_ciphers HIGH:!aNULL:!MD5;
  #  ssl_prefer_server_ciphers on;

  #  location / {
  #    root  html;
  #    index index.html index.htm;
  #  }
  #}

}


注意：修改完nginx的配置文件后，需要运行nginx -s reload才能生效


验证


由于线上服务很多都是需要登录的，所以访问时需要使用域名访问，而不能使用IP访问，因为cookie都是跟域名绑定的
解决这个问题很简单，配置本机host即可


# IP为Nginx服务器IP
xx.xx.xx.14 xxx.daojia.com



通过上述配置，在本机浏览器上请求xxx.daojia.com即可间接通过部署机上的Nginx访问到线上服务，以此在内网测试服务是否正确；待服务无异常后，把线上流量切过来即可。