法兰绒步骤中的Kubernetes安装错误答案

【问题标题】：Kubernetes installation error in flannel step法兰绒步骤中的Kubernetes安装错误
【发布时间】：2020-03-26 02:30:36
【问题描述】：

我在 GCP Centos VM 上使用 kubeadm 安装 kubernetes，运行 flannel 步骤时出现以下错误。

错误：

[root@master ~]# kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml
clusterrole.rbac.authorization.k8s.io/flannel created
clusterrolebinding.rbac.authorization.k8s.io/flannel created
serviceaccount/flannel created
configmap/kube-flannel-cfg created
unable to recognize "https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"
unable to recognize "https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"
unable to recognize "https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"
unable to recognize "https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"
unable to recognize "https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml": no matches for kind "DaemonSet" in version "extensions/v1beta1"

为了解决这个问题，我应该进行哪些更改？

【问题讨论】：

标签： json kubernetes google-cloud-platform linux-kernel app.yaml

【解决方案1】：

使用来自official documentation的flannel yaml

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/2140ac876ef134e0ed5af15c65e414cf26827915/Documentation/kube-flannel.yml
podsecuritypolicy.policy/psp.flannel.unprivileged created
clusterrole.rbac.authorization.k8s.io/flannel configured
clusterrolebinding.rbac.authorization.k8s.io/flannel unchanged
serviceaccount/flannel unchanged
configmap/kube-flannel-cfg configured
daemonset.apps/kube-flannel-ds-amd64 created
daemonset.apps/kube-flannel-ds-arm64 created
daemonset.apps/kube-flannel-ds-arm created
daemonset.apps/kube-flannel-ds-ppc64le created
daemonset.apps/kube-flannel-ds-s390x created

正如@suren 正确提到的那样——问题出在apiVersion: extensions/v1beta1

在最新的 yaml 中看起来像

---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel-ds-amd64
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
...

【讨论】：

【解决方案2】：

这是 DaemonSet 和您的 kubernetes 集群的版本控制问题。您正在使用extensions/v1beta1，但DaemonSets 已升级为apps/v1。

如果您已经运行了api-server，请尝试kubectl explain daemonset，它会告诉您DaemonSets 的apiVersion 应该是什么。

如果没有，只需下载 flannel 文件，编辑它，将 apiVersion: extensions/v1beta1 更改为 apiVersion: apps/v1，它应该可以工作。

【讨论】：