I am trying to use clustered keycloak docker behind the A10 load balancer. I am trying access all the request by https from the client application. My issue is that the same setup is working when we try to access keycloak has HTTP but at the same time when we try to access this has HTTPS it is not working. Can anyone help me to solve this issue? Please let me know whether the issue is in the keycloak level or A10 load balancer level.
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.
来源：https://stackoverflow.com/questions/47068266/keycloak-docker-behind-loadbalancer-with-https-fails