kubeadm安装Kubernetes，集群状态检测时，master一直处于notready状态：
找问题，先查看pods状态：
coredns一直处于Pending状态，查看kuberctl.services日志
判断为网络连接有问题，安装flannel插件。
[root@k8s-master manifests]# kubectl apply -f /coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.ymlclusterrole.rbac.authorization.k8s.io/flannel unchangedclusterrolebinding.rbac.authorization.k8s.io/flannel unchangedserviceaccount/flannel unchangedconfigmap/kube-flannel-cfg unchangedunable to recognize "/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"unable to recognize "/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"unable to recognize "/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"unable to recognize "/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"unable to recognize "/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"
换个链接：kubectl apply -f /coreos/flannel/master/Documentation/kube-flannel.yml
[root@k8s-master manifests]# kubectl apply -f /coreos/flannel/master/Documentation/kube-flannel.ymlpodsecuritypolicy.policy/psp.flannel.unprivileged createdclusterrole.rbac.authorization.k8s.io/flannel configuredclusterrolebinding.rbac.authorization.k8s.io/flannel unchangedserviceaccount/flannel unchangedconfigmap/kube-flannel-cfg configureddaemonset.apps/kube-flannel-ds-amd64 createddaemonset.apps/kube-flannel-ds-arm64 createddaemonset.apps/kube-flannel-ds-arm createddaemonset.apps/kube-flannel-ds-ppc64le createddaemonset.apps/kube-flannel-ds-s390x created
等30秒之后再查看状态：
如果觉得《k8s使用kubeadm init安装后master处于notready状态 coredns一直处于Pending状态》对你有帮助，请点赞、收藏，并留下你的观点哦！
