2021-12-05 17:43:25

1、问题描述

搭建k8s集群时，有一步需要用以下命令初始化集群：

kubeadm init --config=kubeadm-config.yaml --experimental-upload-certs | tee kubeadm-init.log

初始化结果如下：

现在想修改node节点的NAME为k8s-master01，应该修改kubeadm-config.yaml的name字段：

然后删除名为localhost.localdomain的node，再次初始化k8s集群时报以下错误：

[root@k8s-master01 ~]# kubeadm init --config=kubeadm-config.yaml --experimental-upload-certs | tee kubeadm-init.log
Flag --experimental-upload-certs has been deprecated, use --upload-certs instead
[init] Using Kubernetes version: v1.15.1
[preflight] Running pre-flight checks
	[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.11. Latest validated version: 18.09
error execution phase preflight: [preflight] Some fatal errors occurred:
	[ERROR Port-6443]: Port 6443 is in use
	[ERROR Port-10251]: Port 10251 is in use
	[ERROR Port-10252]: Port 10252 is in use
	[ERROR FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml]: /etc/kubernetes/manifests/kube-apiserver.yaml already exists
	[ERROR FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml]: /etc/kubernetes/manifests/kube-controller-manager.yaml already exists
	[ERROR FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml]: /etc/kubernetes/manifests/kube-scheduler.yaml already exists
	[ERROR FileAvailable--etc-kubernetes-manifests-etcd.yaml]: /etc/kubernetes/manifests/etcd.yaml already exists
	[ERROR Port-10250]: Port 10250 is in use
	[ERROR Port-2379]: Port 2379 is in use
	[ERROR Port-2380]: Port 2380 is in use
	[ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

2、错误分析

修改完kubeadm-config.yaml文件后要重启kubeadm，否则前一次启动的端口被占用。

3、解决问题

4、 结果测试

k8s集群初始化成功：

[root@k8s-master01 ~]# kubeadm init --config=kubeadm-config.yaml --experimental-upload-certs | tee kubeadm-init.log
Flag --experimental-upload-certs has been deprecated, use --upload-certs instead
[init] Using Kubernetes version: v1.15.1
[preflight] Running pre-flight checks
	[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.11. Latest validated version: 18.09
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
#后面显示信息省略
 node的name修改成功：
 
                                    [init] Using Kubernetes version: v1.14.0
[preflight] Running pre-flight checks
error execution phase preflight: [preflight] Some fatal errors occurred:
	[ERROR Port-6443]: Port 6443 is in use
	[ERROR Port-10251]: Port 10251 is in use
	[ERROR Port-10252]: .
                                    kubeadm初始化kubernetes报错：
error execution phase preflight: [preflight] Some fatal errors occurred:
[ERROR FileAvailable–etc-kubernetes-manifests-kube-apiserver.yaml]: /etc/kubernetes/manifests/kube-apiserver.yaml already exists
[ERROR FileAvailable–etc-kuber
                                    参考链接：K8S部署遇到的问题处理汇总node节点加入k8s集群失败kubeadm join 运行出错:FileAvailable--etc-kubernetes-pki-ca.crt,FileAvailable--etc-kubernetes-bootstrap-k
error execution phase preflight: [preflight] Some fatal e...
请参阅 。
幻灯片范例
您可以在slide-example目录中找到源代码，二进制文件（Linux x86_64）和angr脚本。 必须自定义solve-example.py ，替换{XXX，YYY，ZZZ}占位符。
可以在bomb/目录中找到Windows PE-32逻辑炸弹。 可以在linux-bomb/目录中找到非常相似Linux / x86_64 linux-bomb/ 。 源代码不可用。 用于解决第一阶段的angr
运行kubeadm join 命令加入集群时，报如下错
root@zrs:~# kubeadm join 192.168.1.62:6443 --token r6omg1.wf03wzc5a13u7ubi     --discovery-token-ca-cert-hash sha256:de0da2432966401f76b217870bc296c5c21b8a059522885c90e7809f5c2d98dd
[preflight] Running pre-flight c
                                    [root@k8s-master01 ~]# kubeadm init --config config.yaml
[init] Using Kubernetes version: v1.10.0
[init] Using Authorization modes: [Node RBAC]
[preflight] Running pre-flight checks.
[preflight] Some...
                                    报错信息：
error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR Port-6443]: Port 6443 is in use
        [ERROR Port-10251]: Port 10251 is in use
        [ERROR Port-10252]: Port 10252 is in use
        [ERROR FileAvailable--et
[root@k8s-master01 ~]# kubeadm init --config=kubeadm-config.yaml --experimental-upload-certs | tee kubeadm-init.log
Flag --experimental-upload-certs has been deprecated, use --upload-certs instead
[init] Using Kubernetes version:.
                                    error: RPC failed; result=18, HTTP code = 200 fatal: The remote end hung up unexpectedly fatal: 过早的文件结束符（EOF） fatal: index-pack failed
Solution for failed with error: RPC failed; result=18, HTTP code = 200
First Solution:
Try running the command below in the remote repository if error is fatal: inde
                                    error execution phase preflight: couldn't validate the identity of the API Server: could not find a JWS signature in the cluster-info ConfigMap for token ID "uyylx2"
To see the stack trace of this error execute with --v=5 or higher
                                    [ERROR FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml]: /etc/kubernetes/manifests/kube-apiserver.yaml already exists
	[ERROR FileAvailable--etc-kubernetes-manifests-kube-controller-manag...