centos7.5+,都可以使用minikube安装kubernetes(k8s),信息如下(参考链接:https://developer.aliyun.com/article/779813?spm=a2c6h.14164896.0.0.5de64b8aiZ7smp)

1、安装docker(参考官网链接 https://docs.docker.com/engine/install/centos/ ; 阿里云docker镜像站 https://developer.aliyun.com/article/110806

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://xxxxxx.mirror.aliyuncs.com"]
}
EOF

#注:访问阿里云镜像服务获取容器镜像加速地址,替换掉xxxxxx
#获取容器镜像加速链接 https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors?spm=a2c6h.12873639.0.0.6c236235IWJdCd

# step 1: 安装必要的一些系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2

# Step 2: 添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# Step 3: 更新并安装 Docker-CE
sudo yum makecache fast
#sudo yum -y install docker-ce
sudo yum install docker-ce docker-ce-cli containerd.io --nobest


# Step 4: 开启Docker服务

sudo systemctl start docker

sudo systemctl enable docker

#查看状态
sudo systemctl status docker

2、阿里云Kubernetest镜像的方法配置Kubernetes软件源,安装kubeclt此处选择CentOS(参考官方链接 https://developer.aliyun.com/mirror/kubernetes?spm=a2c6h.12873639.0.0.6c2362354SzVSX

  • Debian / Ubuntu
apt-get update && apt-get install -y apt-transport-https
curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add - 
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF  
apt-get update
apt-get install -y kubelet kubeadm kubectl
  • CentOS / RHEL / Fedora
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
setenforce 0

#yum install -y kubelet kubeadm kubectl
#systemctl enable kubelet && systemctl start kubelet

#minikube安装,官方说明:只需要kubectl

sudo yum update
yum install -y  kubectl

#ps: 由于官网未开放同步方式, 可能会有索引gpg检查失败的情况, 这时请用 yum install -y --nogpgcheck kubelet kubeadm kubectl 安装

3、阿里云minikube配置指南安装minikube

curl -Lo minikube https://kubernetes.oss-cn-hangzhou.aliyuncs.com/minikube/releases/v1.14.2/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/

为了访问海外的资源,阿里云提供了一系列基础设施,请按照如下参数进行配置。其中常见参数

  • --driver=*** 从1.5.0版本开始,Minikube缺省使用本地最好的驱动来创建Kubernetes本地环境,测试过的版本 dockerkvm
  • --image-mirror-country cn 将缺省利用 registry.cn-hangzhou.aliyuncs.com/google_containers 作为安装Kubernetes的容器镜像仓库 (阿里云版本可选)
  • --iso-url=*** 利用阿里云的镜像地址下载相应的 .iso 文件 (阿里云版本可选)
  • --registry-mirror=***为了拉取Docker Hub镜像,需要为 Docker daemon 配置镜像加速,参考阿里云镜像服务
  • --cpus=2: 为minikube虚拟机分配CPU核数
  • --memory=2048mb: 为minikube虚拟机分配内存数
  • --kubernetes-version=***: minikube 虚拟机将使用的 kubernetes 版本

4、启动K8s集群(官方参考链接 https://minikube.sigs.k8s.io/docs/start/;也可以参考博客 https://blog.csdn.net/weixin_30809333/article/details/101340036

minikube start
  •  异常a,请执行下面脚本

 

minikube start --docker-env HTTPS_PROXY=${https://registry.docker-cn.com} --registry-mirror=https://registry-mirror.com --vm-driver=none
  • 异常b ,请执行下面 sudo yum install conntrack

 

sudo yum install conntrack

minikube start --docker-env HTTPS_PROXY=${https://registry.docker-cn.com} --registry-mirror=https://registry-mirror.com --vm-driver=none

  • 异常c,请执行下面
sudo mv /root/.kube /root/.minikube $HOME
sudo chown -R $USER $HOME/.kube $HOME/.minikube
#minikube start --docker-env HTTPS_PROXY=${https://registry.docker-cn.com} --registry-mirror=https://registry-mirror.com --vm-driver=none

#这是镜像加速地址 https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors?spm=a2c6h.12873639.0.0.ab202043HPVMuX&accounttraceid=9aeb6ddb011d4fb39a13157eed5e29afstpl,你可以得到 registy-mirror
minikube start --registry-mirror=https://ls16vb6g.mirror.aliyuncs.com --vm-driver=none

5、minikube安装的cluster信息查看(请参考官方文档 https://minikube.sigs.k8s.io/docs/start/)

 

6、Minikube基本操作

minikube start/stop/status/delete

7.Enable dashboard in minikube

查看minikube中所有addons

当你刚刚安装完minikube的时候查看所有的addons,

$ minikube addons list
|-----------------------------|----------|--------------|
|         ADDON NAME          | PROFILE  |    STATUS    |
|-----------------------------|----------|--------------|
| ambassador                  | minikube | disabled     |
| dashboard                   | minikube | disabled     |
| default-storageclass        | minikube | enabled ✅   |
| efk                         | minikube | disabled     |
| freshpod                    | minikube | disabled     |
| gvisor                      | minikube | disabled     |
| helm-tiller                 | minikube | disabled     |
| ingress                     | minikube | disabled     |
| ingress-dns                 | minikube | disabled     |
| istio                       | minikube | disabled     |
| istio-provisioner           | minikube | disabled     |
| logviewer                   | minikube | disabled     |
| metallb                     | minikube | disabled     |
| metrics-server              | minikube | disabled     |
| nvidia-driver-installer     | minikube | disabled     |
| nvidia-gpu-device-plugin    | minikube | disabled     |
| olm                         | minikube | disabled     |
| registry                    | minikube | disabled     |
| registry-aliases            | minikube | disabled     |
| registry-creds              | minikube | disabled     |
| storage-provisioner         | minikube | enabled ✅   |
| storage-provisioner-gluster | minikube | disabled     |
|-----------------------------|----------|--------------|
  • Enable an addon
$ minikube addons enable dashboard
  • 可以再运行一下,
$ minikube addons list
  • 检查一下结果。

8.安装minikube dashboard两种方法,分配一个固定的端口

1.在kubernetes文档上一般做法是运行命令

$ minikube dashboard
  • #address='192.168.0.97',为内网访IP
    kubectl proxy --port=8001 --address='192.168.0.97' --accept-hosts='^.*' &
    

  • 红色部分127.0.0.1换成公网IP,集群分配的端口1-65535,均使用我们kubectl proxy代理的端口8001,就可以正常访问

http://124.70.208.216:8001/api/v1/namespaces/kubernetes-dashboard/services/http:kubernetes-dashboard:/proxy/

2. minikube会把dashboard映射到一个本地端口上。每次这样做有点麻烦。下面我们为dashboard的pods创建一个service,我们以后可以通过这个service来访问dashboard,每次就可以使用minikube的ip address和这个service的端口来访问dashboard。

vim minikube-dashbord-svc.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    addonmanager.kubernetes.io/mode: Reconcile
    k8s-app: kubernetes-dashboard
    kubernetes.io/minikube-addons: dashboard
  name: minikube-dashboard-uri
  namespace: kubernetes-dashboard
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 9090
    nodePort: 30080
  selector:
    k8s-app: kubernetes-dashboard
  sessionAffinity: None
  type: NodePort
kubectl apply -f minikube-dashbord-svc.yaml

通过NodePort:nodePort,就可以访问minikube dashboard

 

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