リバースプロキシで特定のURL配下でnginxでBasic認証をかける

リバースプロキシで特定のURL配下でnginxでBasic認証をかける方法です。

１. htpasswdを使えるようにする。(Apacheはインストールしない)

[root@xxx ec2-user]# yum install httpd-tools

２. Basic認証のユーザー、パスワードのファイルを作成

[root@xxx ec2-user]#  htpasswd -c /etc/nginx/.htpasswd username

３. nginxの設定

[root@xxx ec2-user]#vi /etc/nginx/nginx.conf

ポイントは2つ
リバースプロキシの設定

        location / {
            proxy_pass      http://127.0.0.1:9000;
        }

admin配下でbasic認証をかける設定 + リバースプロキシの設定

       location /admin {
            auth_basic "admin only";
            auth_basic_user_file /etc/nginx/.htpasswd;
            proxy_pass      http://127.0.0.1:9000;
       }

nginxの設定ファイル

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;
}

http {
    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  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 4096;

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

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    server {
        listen       80;
        listen       [::]:80;
        server_name  _;
        root         /usr/share/nginx/html;

        location / {
            proxy_pass      http://127.0.0.1:9000;
        }

 
       location /admin {
            auth_basic "admin only";
            auth_basic_user_file /etc/nginx/.htpasswd;
            proxy_pass      http://127.0.0.1:9000;
       }

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }

# Settings for a TLS enabled server.
#
#    server {
#        listen       443 ssl http2;
#        listen       [::]:443 ssl http2;
#        server_name  _;
#        root         /usr/share/nginx/html;
#
#        ssl_certificate "/etc/pki/nginx/server.crt";
#        ssl_certificate_key "/etc/pki/nginx/private/server.key";
#        ssl_session_cache shared:SSL:1m;
#        ssl_session_timeout  10m;
#        ssl_ciphers PROFILE=SYSTEM;
#        ssl_prefer_server_ciphers on;
#
#        # Load configuration files for the default server block.
#        include /etc/nginx/default.d/*.conf;
#
#        error_page 404 /404.html;
#            location = /40x.html {
#        }
#
#        error_page 500 502 503 504 /50x.html;
#            location = /50x.html {
#        }
#    }

}

４. nginxの再起動

[root@xxx ec2-user]# service nginx restart

GolangのRevelフレームワークは
リバースプロキシでサイトを運用する事があり、その際使用しました。

Revel フレームワーク
https://revel.github.io/