I've just setup Keycloak on Kubernets. Its working as expected only I have to port-forward into the Pod to access the web UI. If I access it from the internet as soon as I land on the login page I get the error Invalid parameter: redirect_uri
I get this accessing both the master and my application realm.
Keycloak allows non-HTTPS communication over private IP addresses like localhost, 192.168.x.x, and other private IP addresses.
You might need to setup HTTPS/SSL
https://www.keycloak.org/docs/latest/server_installation/index.html#setting-up-https-ssl