Customizing your Nginx configuration


Applications deployed with Cloud 66 use Nginx as their web and reverse proxy server. You can customize the default configuration of Nginx to suit your needs.

Editing Nginx configurations

  1. Open the Application Overview from your Dashboard
  2. Click on Application Settings &rar; Configuration files in the Application panel on the right of the screen.
  3. Click on the NGINX tab at the top of the main panel
  4. Follow the CustomConfig instructions to customize the configuration.

Editing and committing your Nginx CustomConfig will perform the following steps on every web server in your application, one by one, sequentially:

Reloading Nginx does not interrupt the serving of traffic. This process will be stopped if an error is encountered. For example, if you have 3 web servers in your application, if the first server fails to be updated, the process will be halted for the other 2 servers to avoid complete service disruption.


A bad configuration may stop your Nginx from functioning, so take extra care when making changes.

Working examples

Customizing the Nginx error page

There are two ways for you to create a custom Nginx 50X error page:

  1. Using a static page on your own server
    • Make your custom error page (for example 50x.html) available in your container (for example in /usr/app), and simply mount this folder to the host (for example with /var/containers:/usr/app). The path used in the next step would then be /var/containers/50x.html
    • Customize your Nginx configuration and replace the 50X.html location block with following:
       location = /50x.html
        root /var/containers/;
  2. Using external static page
    • Upload your file to a server which is accessible from your server
    • Customize your Nginx configuration and replace the 50X.html location block with the following:
       location = /50x.html
        proxy_pass {url-of-your-custom-page};

Enabling HTTP2

Nginx supports HTTP2 and this can be enabled on your application by editing your CustomConfig as follows:

Update the listen directive in the server block from this:

server {
        listen 443;
        ssl on;

…to this:

server {
        listen 443 ssl http2;


Be sure to remove the separate ssl on directive from the config, or it will not work.

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