seqdiag {
  activation = none;

  admin[label = "Manual Admin"];
  ca[label = "Manual CA"]
  master;
  kubelet[stacked];

  admin => ca [label="create\n- master-cert"];
  admin ->> master [label="start\n- ca-root\n- master-cert"];

  admin => ca [label="create\n- kubelet-cert"];
  admin ->> kubelet [label="start\n- ca-root\n- kubelet-cert\n- master-location"];

  kubelet => master [label="register\n- kubelet-location"];
}