pod 可以选择的部署到某个节点上，而某个节点也可以允许和拒绝部署某个pod

kubeadm join –token aa367f.c2ac5d12471089a7 11.12.13.10:6443 –discovery-token-ca-cert-hash sha256:c016b7843330e98647903638f629b51903b9cfa45fc655d004a1db5afb87fb5e