Running keycloak client adapter cli script
[disconnected /] embed-server --server-config=standalone-openshift.xml
[standalone@embedded /] /subsystem=security/security-domain=keycloak/:add
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0212: Duplicate resource [
    (\"subsystem\" => \"security\"),
    (\"security-domain\" => \"keycloak\")
]",
    "rolled-back" => true
}