20:14:18 [wtp1002.eqiad.wmnet] Check 'depool' failed: WARNING:etcd.client:etcd response did not contain a cluster ID ERROR:conftool:Error when trying to set/pooled=no on service=parsoid,name=wtp1002.eqiad.wmnet ERROR:conftool:Failure writing to the kvstore: Backend error: The request requires user authentication : Insufficient credentials
See the paste: P6018
This is probably related to T172333 where keyholder_key: deploy_service is added.
T171506 has a similar error but ssh_user: deploy-service is already set here.