Added alternative SSL configuration for the Nginx proxy container

# Proxy configuration

###

# Default Nginx config using only HTTP

nginx_config_template: proxy.conf.j2

# Generates a Diffie-Helmet file for the server if enabled

generate_dhparam: false

# Settings for the proxy image

proxy_image_prefix: "{{ image_prefix }}"

proxy_image_tag: "{{ image_tag }}"

  docker_network:

    name: esgf

# TMP

- name: Generate self-signed SSL certificate

  command: >

    openssl req -new -nodes -x509 -subj "/C=GB/ST=Oxfordshire/L=Didcot/O=Science and Technology Facilities Council/OU=Centre for Environmental Data Analysis/CN=localhost" -days 3650

      -keyout /esg/config/proxy/ssl/proxy.key

      -out /esg/config/proxy/ssl/proxy.crt -extensions v3_ca

  args:

    creates: "/esg/config/proxy/ssl/proxy.crt"

  when: use_self_signed_ssl_cert is defined and use_self_signed_ssl_cert

  notify: "restart web server"

# TMP

- name: Install a provided certificate

  block:

    - name: Set paths for the SSL certificate and key

      set_fact:

        ssl_certificate_path: /esg/config/proxy/ssl/proxy.crt

        ssl_private_key_path: /esg/config/proxy/ssl/proxy.key

    - name: Install SSL certificate

      copy:

        content: "{{ ssl_certificate }}"

        dest: "{{ ssl_certificate_path }}"

    - name: Install SSL private key

      copy:

        content: "{{ ssl_private_key }}"

        dest: "{{ ssl_private_key_path }}"

  when: ssl_certificate is defined and ssl_private_key is defined

- name: Create Ephemeral Diffie-Helman parameters file

  command: openssl dhparam -dsaparam -out /etc/nginx/ssl/dhparam.pem 4096

  args:

    creates: /esg/config/proxy/ssl/dhparam.pem

  when: generate_dhparam

- name: Write proxy configuration

  template:

    src: proxy.conf.j2

    dest: /esg/config/proxy/proxy.conf

    src: "{{ nginx_config_template }}"

    dest: /esg/config/proxy/conf.d/proxy.conf

- name: Start proxy container

  docker_container:

    networks_cli_compatible: yes

    volumes:

      # Mount the Nginx configuration for the proxy

      - "/esg/config/proxy:/etc/nginx/conf.d:ro"

      - "/esg/config/proxy/conf.d:/etc/nginx/conf.d:ro"

      # Mount any SSL files for the proxy

      - "/esg/config/proxy/ssl:/etc/nginx/ssl:ro"

    state: started

    recreate: yes

# HTTP and HTTPS server blocks that proxy to the other containers running on this host

server {

    listen 8080 ssl http2 default_server;

    server_name  _;

    # Use the Docker embedded DNS server to allow us to resolve container names

    resolver 127.0.0.11 ipv6=off;

    ssl_certificate     {{ ssl_certificate_path }};

    ssl_certificate_key {{ ssl_private_key_path }};

    # SSL configuration from Mozilla SSL config generator

    # https://mozilla.github.io/server-side-tls/ssl-config-generator/

    ssl_session_timeout 1d;

    ssl_session_cache shared:SSL:50m;

    ssl_session_tickets off;

    {% if generate_dhparam %}

    # Diffie-Hellman parameter for DHE ciphersuites

    ssl_dhparam /etc/nginx/ssl/dhparam.pem;

    {% endif %}

    # Enables server-side protection from BEAST attacks

    # http://blog.ivanristic.com/2013/09/is-beast-still-a-threat.html

    ssl_prefer_server_ciphers on;

    # Disable SSLv3 since it's less secure then TLS http://en.wikipedia.org/wiki/Secure_Sockets_Layer#SSL_3.0

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

    ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS:!3DES';

    ssl_stapling on;

    ssl_stapling_verify on;

    ssl_trusted_certificate {{ ssl_certificate_path }};

    # Enable HSTS (HTTP Strict Transport Security) to avoid ssl stripping

    # https://developer.mozilla.org/en-US/docs/Security/HTTP_Strict_Transport_Security

    # https://en.wikipedia.org/wiki/SSL_stripping#SSL_stripping

    # 15768000 seconds = 6 months

    add_header Strict-Transport-Security max-age=15768000;

    # By default, return 404

    location / {

        return 404;

    }

    {% if 'data' in group_names %}

    {% if thredds_enabled %}

    location /thredds {

        include /etc/nginx/includes/proxy_params.conf;

        proxy_pass http://thredds:8080;

    }

    {% endif %}

    {% if fileserver_enabled %}

    location /thredds/fileServer {

        include /etc/nginx/includes/proxy_params.conf;

        proxy_pass http://fileserver:8080;

    }

    {% endif %}

    {% endif %}

    {% if 'index' in group_names %}

    {% if solr_enabled %}

    # We only want to permit access to the replication handler for each core from outside

    location ~ ^/solr/[a-z]+/replication {

        include /etc/nginx/includes/proxy_params.conf;

        proxy_pass http://solr-slave:8983;

    }

    {% endif %}

    {% if search_enabled %}

    location /esg-search {

        include /etc/nginx/includes/proxy_params.conf;

        proxy_pass http://search:8080;

    }

    {% endif %}

    {% endif %}

}