我在 Ubuntu 虚拟机上使用 kubeadm (v1.18) 设置了一个 k8s 集群。现在我需要添加一个入口控制器。我决定使用 nginx（但我对其他解决方案持开放态度）。我根据文档“裸机”部分安装了它：

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-0.31.1/deploy/static/provider/baremetal/deploy.yaml

安装对我来说似乎很好：

kubectl get all -n ingress-nginx

NAME                                            READY   STATUS      RESTARTS   AGE
pod/ingress-nginx-admission-create-b8smg        0/1     Completed   0          8m21s
pod/ingress-nginx-admission-patch-6nbjb         0/1     Completed   1          8m21s
pod/ingress-nginx-controller-78f6c57f64-m89n8   1/1     Running     0          8m31s

NAME                                         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
service/ingress-nginx-controller             NodePort    10.107.152.204   <none>        80:32367/TCP,443:31480/TCP   8m31s
service/ingress-nginx-controller-admission   ClusterIP   10.110.191.169   <none>        443/TCP                      8m31s

NAME                                       READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/ingress-nginx-controller   1/1     1            1           8m31s

NAME                                                  DESIRED   CURRENT   READY   AGE
replicaset.apps/ingress-nginx-controller-78f6c57f64   1         1         1       8m31s

NAME …

我按照本指南使用kubeadm安装了kubernetes集群.经过一段时间后,我决定重新安装K8但遇到麻烦,删除所有相关文件,而不是在官方网站上找到任何文件如何删除通过kubeadm安装的集群.有人遇到了同样的问题并知道删除所有文件和依赖项的正确方法吗？先感谢您.

有关更多信息,我删除了kubeadm,kubectl和kubelet,apt-get purge/remove但是当我再次开始安装集群时,我遇到了下一个错误:

[preflight] Some fatal errors occurred:
    Port 6443 is in use
    Port 10251 is in use
    Port 10252 is in use
    /etc/kubernetes/manifests is not empty
    /var/lib/kubelet is not empty
    Port 2379 is in use
    /var/lib/etcd is not empty

只是好奇这个默认命名空间的意图.

提前致谢.

我正试着从我的工作站到达我的k8s主人.我可以从局域网中访问主服务器,但不能从我的工作站访问.错误消息是:

% kubectl --context=employee-context get pods
Unable to connect to the server: x509: certificate is valid for 10.96.0.1, 10.161.233.80, not 114.215.201.87

如何在证书中添加114.215.201.87？我是否需要删除旧的群集ca.crt,重新创建它,重新启动整个群集然后重新签名客户端证书？我已经使用kubeadm部署了我的集群,我不确定如何手动执行这些步骤.

实际问题：

无法启动kubernetes API，因此无法启动kube服务，例如：kubectl版本kubect get节点

/home/ubuntu# kubectl version
Client Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0", GitCommit:"641856db18352033a0d96dbc99153fa3b27298e5", GitTreeState:"clean", BuildDate:"2019-03-25T15:53:57Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"linux/amd64"}



   The connection to the server localhost:8080 was refused - did you specify the right host or port  ?

问题背景：

Docker 已安装。使用以下命令安装 kube 组件：

apt-get update && apt-get install -y kubeadm kubelet kubectl

但是，执行时kubeadm init --apiserver-advertise-address=$myip --ignore-preflight-errors=all:

I0408 09:09:07.316109       1 client.go:352] scheme "" not registered, fallback to default scheme
I0408 09:09:07.319904       1 asm_amd64.s:1337] ccResolverWrapper: sending new addresses to cc: [{127.0.0.1:2379 0  <nil>}] …

当我使用kubeadm配置Kubernetes集群时,我将我的节点标记为无.这是Kubernetes中的一个已知错误,目前公关正在进行中.但是,我想知道是否有为该节点手动添加角色名称的选项？

root@ip-172-31-14-133:~# kubectl get nodes
NAME               STATUS    ROLES     AGE       VERSION
ip-172-31-14-133   Ready     master    19m       v1.9.3
ip-172-31-6-147    Ready     <none>    16m       v1.9.3

我之前跑过的时候,我失去了原来的'kubeadm join'命令kubeadm init.

如何再次检索此值？

我在执行 sudo kubeadm init 时遇到如下情况 Help me~~

$ sudo kubeadm init
[init] Using Kubernetes version: v1.24.1
[preflight] Running pre-flight checks
        [WARNING SystemVerification]: missing optional cgroups: blkio
error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR CRI]: container runtime is not running: output: E0605 10:35:34.973561   12491 remote_runtime.go:925] "Status from runtime service failed" err="rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService"
time="2022-06-05T10:35:34+09:00" level=fatal msg="getting status of runtime: rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService"
, error: …

在 k8s(v1.10) 集群上创建 Redis POD，并在“ContainerCreating”中创建 POD

Type     Reason                  Age                   From                Message
  ----     ------                  ----                  ----                -------
  Normal   Scheduled               30m                   default-scheduler   Successfully assigned redis to k8snode02
  Normal   SuccessfulMountVolume   30m                   kubelet, k8snode02  MountVolume.SetUp succeeded for volume "default-token-f8tcg"
  Warning  FailedCreatePodSandBox  5m (x1202 over 30m)   kubelet, k8snode02  Failed create pod sandbox: rpc error: code = Unknown desc = NetworkPlugin cni failed to set up pod "redis_default" network: failed to find plugin "loopback" in path [/opt/loopback/bin /opt/cni/bin]
  Normal   SandboxChanged          47s (x1459 over 30m)  kubelet, k8snode02 …

当我运行kubeadm init它时会显示一个令牌,我应该使用其他主机连接到此主机.该令牌存储在哪里？我试图通过在Terraform中添加kubeadm来找出更多自动化方法.

谢谢你的帮助!