I have a simple setup that is using OAuth2 Proxy to handle authentication. It works fine locally using minikube but when I try to use GKE when the oauth callback happens I get a 403 status and the the following message...
Login Failed: Unable to find a valid CSRF token. Please try again.
The offending url is http://ourdomain.co/oauth2/callback?code=J_6ao0AxSBRn4bwr&state=r_aFqM9wsSpPvyKyyzE_nagGnpNKUp1pLyZafOEO0go%3A%2Fip
What should be configured differently to avoid the CSRF error?
In my case it was because I needed to set the cookie to secure = false. Apparently I could still have secure true no problem with http and an IP but once I uploaded with a domain it failed.