hurl_proxy.conf

upstream hurl_proxy {
  server www.hurl.it;
  keepalive 600;
}

server {
  listen 80;
  server_name hurl.example.com;

  access_log /var/log/nginx/hurl_proxy.access.log;
  error_log /var/log/nginx/hurl_proxy.error.log;

  location / {
    proxy_http_version 1.1;
    proxy_set_header Host "www.hurl.it";
    proxy_set_header Connection "";
    proxy_redirect http://www.hurl.it/ /;
    proxy_pass http://hurl_proxy;

    # ngx_http_sub_module
    # http://nginx.org/en/docs/http/ngx_http_sub_module.html
    sub_filter "ajax.googleapis.com/ajax/libs/" "cdn.staticfile.org/";
    sub_filter_last_modified on;
    sub_filter_once off;
  }
}

init.sls

include:
  - nginx

/etc/nginx/sites-available/hurl_proxy.conf:
  file:
    - managed
    - source: salt://hurl_proxy/hurl_proxy.conf
    - template: jinja
    - user: root
    - group: root
    - mode: 644
    - watch_in:
      - service: nginx

/etc/nginx/sites-enabled/hurl_proxy.conf:
  file.symlink:
    - target: /etc/nginx/sites-available/hurl_proxy.conf
    - watch_in:
      - service: nginx

nginx.sls

nginx-ppa:
  pkgrepo.managed:
    - ppa: nginx/stable
    - require_in:
      - pkg: nginx

nginx:
  pkg:
    - name: nginx-full
    - installed
    - refresh: True
  service:
    - running
    - enable: True
    - reload: True
    - require:
      - pkg: nginx

remove_default_site:
  file:
    - absent
    - names:
      - /etc/nginx/sites-available/default
      - /etc/nginx/sites-enabled/default
    - watch_in:
      - service: nginx