nginx¶

October 14, 2026 · 3 min read

Skyline, nginx, and Keystone: Fixing "426 Upgrade Required"

When I turned on OIDC login for Skyline, the OpenStack dashboard, every call it proxied to Keystone came back with 426 Upgrade Required. Nothing in those requests asked to upgrade anything. The real problem was that Skyline's nginx was talking HTTP/1.0 to Keystone, and the Keystone side wanted HTTP/1.1. One line of nginx configuration fixes it.

DevOps Engineering nginx

April 24, 2011 · 2 min read

Nginx – How to set expires headers for images

In Nginx, you can easily set browser caching for your images. Nginx sets the ‘Expires’ and ‘Cache-Control’ http request headers for images nginx serves. This allows the client’s browser to cache the images for the amount of time specified by the expires tag inside the location block of code.

nginx