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问题描述 配置master节点时，执行kubeadm init --config kubeadm-config.yaml --v=5命令后，执行至初始化Pod步骤时报错： [wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s [kubelet-check] Initial timeout of 40s passed. Unfortunately, an error has occurred: timed out waiting for the condition This error is likely caused by: - The kubelet is not running - The kubelet is unhealthy due to a misconfiguration of the node in some way (required cgroups disabled) ...... 经过检查，host配置无误，cluster的IP地址也与本机相同 ...

Kubernetes需要使用docker作为运行时，在Linux机器上安装docker后，尝试拉取hello-world镜像时出现问题 安装docker时一切都很顺利： sudo apt update sudo apt install docker.io sudo systemctl start docker sudo systemctl enable docker 但在进行docker pull hello-world拉取镜像时报错： Error response from daemon: Get "https://registry-1.docker.io/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceed ed while awaiting headers) 解决方法 首先需要更换docker源，这里使用阿里云镜像加速器与另一个自己收集的源。进入/etc/docker/daemon.json文件中如此配置： { "registry-mirrors": [ "https://ok5mwqnl.mirror.aliyuncs.com", "https://docker.1ms.run" ] } 配置完成后执行sudo systemctl restart docker重启docker服务 重启后运行docker pull hello-world仍失败，报错信息与先前一致 这时考虑DNS配置问题，进入/etc/resolv.conf文件，在原有的若干nameserver之上再增加两条： # Generated by NetworkManager nameserver 8.8.8.8 nameserver 8.8.4.4 # 此处为原有的若干行nameserver # ... 配置完成后运行docker pull hello-world，成功拉取镜像，执行sudo docker images查看本地镜像： ...