I'm trying to figure out what import/export best practices in keycloak version 3.3.0.CR1. As I see in keycloak official page import/export, was described they strategy. Here they example of export to single file json. Goint to /keycloak/bin folder and the run this:

./standalone.sh -Dkeycloak.migration.action=export -Dkeycloak.migration.provider=singleFile -Dkeycloak.migration.file=keycloak-export.json

I logged in to k8s pod. After run this command I get errors:

12:23:32,045 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([
    ("core-service" => "management"),
    ("management-interface" => "http-interface")
]) - failure description: {
    "WFLYCTL0080: Failed services" => {"org.wildfly.management.http.extensible" => "java.net.BindException: Address already in use /127.0.0.1:9990"},
    "WFLYCTL0288: One or more services were unable to start due to one or more indirect dependencies not being available." => {
        "Services that were unable to start:" => ["org.wildfly.management.http.extensible.shutdown"],
        "Services that may be the cause:" => ["jboss.remoting.remotingConnectorInfoService.http-remoting-connector"]
    }
}

As I see, because to Keycloak server run on the same port where, I ran backup script. Here helm/keycloak values.yml:

Service:
  Name: keycloak
  Port: 8080
  Type: ClusterIP

Deployment:
  Image: jboss/keycloak
  ImageTag: 2.5.1.Final
  ImagePullPolicy: IfNotPresent
  ContainerPort: 8080
  KeycloakUser: Admin
  KeycloakPassword: Admin

So server should be stopped before we ran this scripts? I can't stop keycloak process inside of pod, because ingress will close pod and will create new one. Any suggestions for any other way to export/import(backup/restore) data? Or I missing something?

P.S. I even tried UI import/export. Export work good, and I see all data. But import worked in half way. He Brought me all "Clients", but not my "Realm" and "User Federation". Is it possible?