4、docker+k8s+kubesphere:master安装

最新推荐文章于 2025-06-13 15:26:26 发布

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最新推荐文章于 2025-06-13 15:26:26 发布 · 837 阅读

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#docker #devops

本文详细介绍使用docker、kubectl和kubadm进行Kubernetes Master的安装流程，包括通过yaml文件和命令行两种方式的安装步骤，以及镜像下载、服务状态检查、命令自动补全设置、token管理等内容。

4、docker+k8s+kubesphere:master安装

检查docker、kubectl、kubadm状态

#docker 
systemctl status docker  查看状态
systemctl start docker   重启
systemctl stop docker    停止
systemctl restart docker 重启

#kubectl
systemctl status kubelet  查看状态
systemctl start kubelet   重启
systemctl stop kubelet    停止
systemctl restart kubelet 重启

第一种，yaml方式安装

cat <<EOF > ./kubeadm-config.yaml
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: v1.16.9
imageRepository: registry.cn-hangzhou.aliyuncs.com/google_containers

#master地址
controlPlaneEndpoint: "192.168.5.151:6443"	
networking:
  serviceSubnet: "10.96.0.0/16"	

  #k8s容器组所在的网段
  podSubnet: "10.20.0.1/16"	
  dnsDomain: "cluster.local"
EOF

PS:注意这里的网段后面会用到

此时会生成一个kubeadm-config.yaml的yaml文件

安装master的yaml文件

kubeadm init --config=kubeadm-config.yaml --upload-certs

第二种，命令安装

 kubeadm init \
--apiserver-advertise-address=192.168.5.151   \
--image-repository registry.cn-hangzhou.aliyuncs.com/google_containers  \
--kubernetes-version= v1.16.9  \
--service-cidr=10.10.0.0/16  \
--pod-network-cidr=10.244.0.0/16 \

PS:注意这里的网段后面会用到

不管采用哪一种方式安装
1、检查docker是否启动
2、版本必须要与kubeadm、kubelet、kubectl保持一致
3、查看版本kubectl version
4、安装过程大概3分钟，根据机器，网络情况而定

设置k8s命令自动补全
yum -y install bash-completion
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> ~/.bashrc

查看镜像

此时会有7个镜像产生
[root@node151 ~]# docker images
REPOSITORY                                                                    TAG                 IMAGE ID            CREATED             SIZE
registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver            v1.16.9             dd3b6beaa554        3 months ago        160MB
registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager   v1.16.9             b6f6512bb3ba        3 months ago        152MB
registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy                v1.16.9             a197b1cf22e3        3 months ago        82.8MB
registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler            v1.16.9             476ac3ab84e5        3 months ago        83.6MB
registry.cn-hangzhou.aliyuncs.com/google_containers/etcd                      3.3.15-0            b2756210eeab        11 months ago       247MB
registry.cn-hangzhou.aliyuncs.com/google_containers/coredns                   1.6.2               bf261d157914        11 months ago       44.1MB
registry.cn-hangzhou.aliyuncs.com/google_containers/pause                     3.1                 da86e6ba6ca1        2 years ago         742kB

安装成功结果如下

[root@node151 ~]# kubeadm init --config=kubeadm-config.yaml --upload-certs
W0724 14:34:58.312794    2137 validation.go:28] Cannot validate kubelet config - no validator is available
W0724 14:34:58.312851    2137 validation.go:28] Cannot validate kube-proxy config - no validator is available
[init] Using Kubernetes version: v1.17.5
[preflight] Running pre-flight checks
	[WARNING Service-Docker]: docker service is not enabled, please run 'systemctl enable docker.service'
	[WARNING Service-Kubelet]: kubelet service is not enabled, please run 'systemctl enable kubelet.service'
[preflight] Pulling images required for setting up a Kubernetes cluster