The main nginx router, load-balancer, and SSL terminating proxy for Isaac Physics and Isaac Computer Science. It serves only static assets (CDN) and error pages, otherwise proxying traffic to the relevant container.

We use Let's Encrypt for our TLS certificates; new certificates are created using generate-certs.sh when the list of domains changes; or are renewed using renew-certs.sh when they near expiry.

TLS and the use of these certificates is then configured in conf/ssl.conf and includes cipher suites and OCSP stapling.

Our configuration of nginx is split into smaller files loaded by the main nginx.conf file. Commonly re-used header blocks and the server block configuration for each of the various projects can be found in the conf directory.

Error pages are stored in the html directory and served when the relevant container for a request is unavailable.