Keycloak Docker behind loadbalancer with https fails
I know this is an older question, but I couldn't find a satisfying answer anywhere and I wanted to share my solution. This eventually worked for me in an AWS Environment with an Application Load Balancer:
Run the keycloak docker container with the environment variable PROXY_ADDRESS_FORWARDING=true
As seen in the keycloak docker documentation:
When running Keycloak behind a proxy, you will need to enable proxy address forwarding.
I don't know A10, but you have to ensure that it sets the request headers X-Forwarded-For and X-Forwarded-Proto.Then you have to configure Keycloak (Wildfly, Undertow) to work together with the SSL terminating reverse proxy (aka load balancer).See http://www.keycloak.org/docs/latest/server_installation/index.html#_setting-up-a-load-balancer-or-proxy for a detailed description.