Docker Nginx Reverse Proxy

Categories: Docker   Nginx   Reverse Proxy
Tags: Docker   Nginx   Reverse Proxy

Beispiel für 2 Docker container. Einen Webserver mit Python, einen Nginx Reverseproxy in einem VS Code mit Docker Plugin

Docker Nginx Reverse Proxy - Simple in VS Code

Beispiel für 2 Docker container. Einen Webserver mit Python, einen Nginx Reverseproxy in einem VS Code mit Docker Plugin

2020 11 05 Docker Reverse Screen Vscode

docker python webserver für port 8080

webserver.py

webserver.py

    #!/usr/bin/env python3
    """
    Very simple HTTP server in python for logging requests
    Usage::
        ./server.py [<port>]
    """
    from http.server import BaseHTTPRequestHandler, HTTPServer
    import logging
    import socket

    class S(BaseHTTPRequestHandler):
        def _set_response(self):
            self.send_response(200)
            self.send_header('Content-type', 'text/html')
            self.end_headers()

        def do_GET(self):
            logging.info("GET request,\nPath: %s\nHeaders:\n%s\n", str(self.path), str(self.headers))
            self._set_response()
            self.wfile.write("GET request for {}".format(self.path).encode('utf-8'))

        def do_POST(self):
            content_length = int(self.headers['Content-Length']) # <--- Gets the size of data
            post_data = self.rfile.read(content_length) # <--- Gets the data itself
            logging.info("POST request,\nPath: %s\nHeaders:\n%s\n\nBody:\n%s\n",
                    str(self.path), str(self.headers), post_data.decode('utf-8'))

            self._set_response()
            self.wfile.write("POST request for {}".format(self.path).encode('utf-8'))

    def run(server_class=HTTPServer, handler_class=S, port=8080):
        logging.basicConfig(level=logging.INFO)
        server_address = ('', port)
        httpd = server_class(server_address, handler_class)
        logging.info('Starting httpd...\n')
        try:
            httpd.serve_forever()
        except KeyboardInterrupt:
            pass
        httpd.server_close()
        logging.info('Stopping httpd...\n')

    if __name__ == '__main__':

        hostname = socket.gethostbyname(socket.gethostname())

        print ("Start ", __file__, "on", hostname) 
    
        from sys import argv
    
        if len(argv) == 2:
            run(port=int(argv[1]))
        else:
            run()

Webserver Dockerfile

Datei Dockerfile

  FROM python:3.8-slim-buster
  WORKDIR /usr/src/app

  # COPY requirements.txt ./
  # RUN pip install --no-cache-dir -r requirements.txt
  COPY . . 

  CMD [ "python", "webserver.py" ]

Webserver docker-compose.yml

Datei docker-compose.yml

    version: '3.8'

    services:
      ve:
        image: ve-webserver
        build:
          context: .
          dockerfile: ./Dockerfile
        ports:  
          - "8080:8080"

Erstellen und starten des Webserver Images

Executing task: docker-compose -f "dockerpythonwebserver/docker-compose.yml" up -d --build <

-

Creating network "dockerpythonwebserver_default" with the default driver
Building ve
Step 1/4 : FROM python:3.8-slim-buster
 ---> 0f59d947500d
Step 2/4 : WORKDIR /usr/src/app
 ---> Using cache
 ---> 09d2910a72a3
Step 3/4 : COPY . .
 ---> ae28ea2c351a
Step 4/4 : CMD [ "python", "webserver.py" ]
 ---> Running in ab4cc0588cb8
Removing intermediate container ab4cc0588cb8
 ---> 82dc8730c707

Successfully built 82dc8730c707
Successfully tagged ve-webserver:latest
Creating dockerpythonwebserver_ve_1 ... done

Log des Webservers

Start Request:

http://192.168.4.40:8080/jhfdsgaksdjfhagsdkf%20jasdfk

Anzeigen des Logs:

docker logs -f be0167a622dbae65ef10722d8c7b9cbf559cb93d2d596732ee2a789565799bd6 

INFO:root:Starting httpd...

192.168.4.29 - - [05/Nov/2020 14:57:45] code 400, message Bad request version ('\x00$\x13\x01\x13\x03\x13\x02À+À/̨̩À,À0À')
192.168.4.29 - - [05/Nov/2020 14:57:45] "ü{.ö@þѶR£Ò;$&åå×æ2EÒ  Úá Õù9¾E.Ñ£Þ(Ã{ îÅaàÆ\ÓïÁʤ
$À+À/̨̩À,À0À" 400 -
INFO:root:GET request,
Path: /jhfdsgaksdjfhagsdkf%20jasdfk
Headers:
Host: 192.168.4.40:8080
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1

docker compose Nginx reverse Proxy

nginx.config

Nginx Konfigurationsdatei nginx.conf

events {

}
http {
  server {
    error_log /etc/nginx/error_log.log warn;
    client_max_body_size 20m;

    server_name 192.168.4.40;

    location /yourService1 {
      proxy_pass http://192.168.4.40:8080;
      rewrite ^/yourService1(.*)$ $1 break;
    }

    location /yourService2 {
      proxy_pass http://192.168.4.40:8080;
      rewrite ^/yourService1(.*)$ $1 break;
    }
  }

}

nginx docker-compose.yml

Datei docker-compose.yml

version: '3'
services:
  nginx: 
    image: ve-nginx-reverseproxy:latest
    container_name: production_nginx
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf
    ports:
      - 80:80
      - 443:443

bauen und starten von ve-nginx-reverseproxy Image

Compose up

Executing task: docker-compose -f "docker-nginx-reverseProxy/docker-compose.yml" up -d --build

__

Pulling nginx (nginx:latest)...
latest: Pulling from library/nginx
Digest: sha256:ed7f815851b5299f616220a63edac69a4cc200e7f536a56e421988da82e44ed8
Status: Downloaded newer image for nginx:latest
Creating production_nginx_reverseproxy ... done

Test Port 80 log

docker logs -f c8d1187f9f72e082a8c205098f3192547ef33809a600d3431d4e4143c50b040d <

Test Request für Reverseproxy

http://192.168.4.40:80/yourService1/1
http://192.168.4.40:80/yourService2/1

Log nginx reverseproxy:

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
192.168.4.29 - - [05/Nov/2020:15:18:05 +0000] "GET /yourService1/1 HTTP/1.1" 200 29 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0"
192.168.4.29 - - [05/Nov/2020:15:18:05 +0000] "GET /favicon.ico HTTP/1.1" 404 153 "http://192.168.4.40/yourService1/1" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0"
192.168.4.29 - - [05/Nov/2020:15:18:42 +0000] "GET /yourService2/1 HTTP/1.1" 200 42 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0"

Log Webserver

INFO:root:Starting httpd...

INFO:root:GET request,
Path: /aa
Headers:
Host: 192.168.4.40:8080
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1



192.168.4.29 - - [05/Nov/2020 15:16:13] "GET /aa HTTP/1.1" 200 -
INFO:root:GET request,
Path: /1
Headers:
Host: 192.168.4.40:8080
Connection: close
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Upgrade-Insecure-Requests: 1



172.22.0.1 - - [05/Nov/2020 15:18:05] "GET /1 HTTP/1.0" 200 -
INFO:root:GET request,
Path: /yourService2/1
Headers:
Host: 192.168.4.40:8080
Connection: close
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Upgrade-Insecure-Requests: 1

src

</src/2020-11-docker/>

Links:

https://www.domysee.com/blogposts/reverse-proxy-nginx-docker-compose

server.py

https://gist.github.com/mdonkers/63e115cc0c79b4f6b8b3a6b797e485c7

MS VS Code How TO https://docs.microsoft.com/en-us/visualstudio/docker/tutorials/update-your-app

MS VS Code Docker Debug Python

https://code.visualstudio.com/docs/containers/debug-python

rescue

nginx.conf

events {

}
http {
    server {  
        error_log /etc/nginx/error_log.log warn; 
        client_max_body_size 20m;
        ## 
        server_name 192.168.2.46;

        location /basic_status {
           stub_status on;
           allow all;
        }

        # location 1 
        location /yourService1 {
            proxy_pass http://192.168.2.46:8080;
            rewrite ^/yourService1(.*)$ $1 break;
        }

        # location cut3d (TODO) 
        location /cut3d {
            proxy_pass http://192.168.2.46:8080;
            rewrite ^/cut3d(.*)$ rewrite-$1 break;
        }
    }

}

promentheus.conf

global:
  scrape_interval:     2s
  evaluation_interval: 2s

rule_files:
  # - "first.rules"
  # - "second.rules"

scrape_configs:
  # selbst 
  - job_name: prometheus
    static_configs:
      - targets: ['localhost:9090']

  - job_name: 'node'
    static_configs:
      - targets: ['192.168.2.46:9100']
Written on November 5, 2020