kubeadm config images list --kubernetes-version=v1.11.1
kubeadm reset
kubectl get pods -n kube-system
kubectl get pods --all-namespaces
export KUBECONFIG=/etc/kubernetes/admin.conf
kubeadm config print init-defaults > kubeadm.conf
#!/bin/bash
K8S_VERSION=:v1.18.0
ETCD_VERSION=:3.4.3-0
DASHBOARD_VERSION=:v1.8.3
FLANNEL_VERSION=:v0.10.0-amd64
DNS_VERSION=:1.2.0
PAUSE_VERSION=:3.1
docker pull mirrorgooglecontainers/kube-apiserver-amd64$K8S_VERSION
docker pull mirrorgooglecontainers/kube-controller-manager-amd64$K8S_VERSION
docker pull mirrorgooglecontainers/kube-scheduler-amd64$K8S_VERSION
docker pull mirrorgooglecontainers/kube-proxy-amd64$K8S_VERSION
docker pull mirrorgooglecontainers/etcd-amd64$ETCD_VERSION
docker pull mirrorgooglecontainers/pause$PAUSE_VERSION
docker pull coredns/coredns$DNS_VERSION
docker pull quay.io/coreos/flannel$FLANNEL_VERSION
docker tag mirrorgooglecontainers/kube-apiserver-amd64$K8S_VERSION k8s.gcr.io/kube-apiserver$K8S_VERSION
docker tag mirrorgooglecontainers/kube-controller-manager-amd64$K8S_VERSION k8s.gcr.io/kube-controller-manager$K8S_VERSION
docker tag mirrorgooglecontainers/kube-scheduler-amd64$K8S_VERSION k8s.gcr.io/kube-scheduler$K8S_VERSION
docker tag mirrorgooglecontainers/kube-proxy-amd64$K8S_VERSION k8s.gcr.io/kube-proxy$K8S_VERSION
docker tag mirrorgooglecontainers/etcd-amd64$ETCD_VERSION k8s.gcr.io/etcd$ETCD_VERSION
docker tag mirrorgooglecontainers/pause$PAUSE_VERSION k8s.gcr.io/pause$PAUSE_VERSION
docker tag coredns/coredns$DNS_VERSION k8s.gcr.io/coredns$DNS_VERSION
docker image rm mirrorgooglecontainers/kube-apiserver-amd64$K8S_VERSION
docker image rm mirrorgooglecontainers/kube-controller-manager-amd64$K8S_VERSION
docker image rm mirrorgooglecontainers/kube-scheduler-amd64$K8S_VERSION
docker image rm mirrorgooglecontainers/kube-proxy-amd64$K8S_VERSION
docker image rm mirrorgooglecontainers/etcd-amd64$ETCD_VERSION
docker image rm mirrorgooglecontainers/pause$PAUSE_VERSION
docker image rm coredns/coredns$DNS_VERSION
原文：https://www.cnblogs.com/dissipate/p/13190943.html