[DOCKER] Oreore certificate https (2020/12/19) for the first time with nginx

things to do

――I haven't touched nginx properly yet, so I learned --Configure with docker --Proxy to multiple application servers --https between nginx server and client with oleore certificate

Overall file structure

├── app #Application servers
│   ├── main
│   │   └── index.html
│   └── sub
│       └── index.html
├── docker
│   └── docker-compose.yml
└── proxy # nginx + ssl
    ├── conf.d
    │   ├── default.conf
    │   └── main.conf
    ├── mime.types #
    ├── nginx.conf
    └── ssl
        ├── server-private.pem
        ├── server-public.key
        ├── server.csr
        ├── server_self_signed.crt
        └── subjectaltname.ext

docker-compose

`docker-compose.yml`


version: '3'

services:
  main-server:
    image: nginx
    container_name: 'main-server'
    volumes:
      - ../app/main:/usr/share/nginx/html
    ports:
      - 7000:80

  sub-server:
    image: nginx
    container_name: 'sub-server'
    volumes:
      - ../app/sub:/usr/share/nginx/html
    ports:
      - 7001:80

  reverse-proxy:
    image: nginx
    volumes:
      - ../proxy:/etc/nginx
    ports:
      - 80:80
      - 443:443

Proxy with nginx

`proxy/nginx.conf`


user  nginx;
events {
    worker_connections  16;
}
http {
    charset UTF-8;
    #log format setting
    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 /etc/nginx/access_log main;
    #Virtual server configuration directory
    include ./conf.d/*.conf;
}

`conf:proxt/conf.d/main.conf`


server {
    listen 80;
    return 301 https://$host$request_uri; # http to https
}

server {
    listen 443 ssl;
    server_name localhost; #domain
    keepalive_timeout   70;

    ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
    ssl_session_cache   shared:SSL:10m;
    ssl_session_timeout 10m;
    ssl_buffer_size     16k;
    ssl_certificate     /etc/nginx/ssl/server_self_signed.crt;
    ssl_certificate_key /etc/nginx/ssl/server-private.pem;

    location /main {
        proxy_pass http://host.docker.internal:7000/;
        proxy_redirect off;
    }
    location /sub {
        proxy_pass http://host.docker.internal:7001/;
        proxy_redirect off;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

App server

`app/main/index.html`


<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <title>main</title>
  </head>
  <body>
    <h1>main</h1>
  </body>
</html>

`app/sub/index.html`


<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <title>sub</title>
  </head>
  <body>
    <h1>sub</h1>
  </body>
</html>

Creating a certificate

`Certificate creation`


openssl genrsa -out server-private.pem 2048 #Create a 1024-bit private key in RSA format
openssl rsa -in server-private.pem -pubout -out server-public.key #Generate public key
openssl req -new -key server-private.pem > server.csr #CSR creation
openssl x509 -req -in server.csr -signkey server-private.pem 
          -out server_self_signed.crt -days 825 -extfile subjectaltname.ext #Issuance of self-signed certificate

`subjectaltname.ext`


subjectAltName=DNS:localhost

Once this is done, register server_self_signed.crt with the host's certificate. Don't forget to trust once you register. https://qiita.com/colomney/items/887f9ea7b68a3b427060

I wrote only the implementation as a reminder, so please check each for details.

Reference/Citation source

https://nginx.org/en/docs/beginners_guide.html https://qiita.com/zawawahoge/items/d58ab6b746625e8d4457 https://qiita.com/kunichiko/items/12cbccaadcbf41c72735 https://qiita.com/katsunory/items/97f5a4738863776fbaf4 https://kazuhira-r.hatenablog.com/entry/20180803/1533302929