VMware Workstation中開啟虛擬化? ??

安裝之前需要在bios中開啟虛擬化功能。這里是在vmvare虛擬機中安裝。開啟步驟如下：

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1.1?下載virtualbox

官網地址：https://www.virtualbox.org/

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?1. 首先下載oracle_vbox.asc文件到本地：

?wget -q?https://www.virtualbox.org/download/oracle_vbox.asc

再執行import：

sudo rpm --import oracle_vbox.asc

2. cd 進入目錄：/etc/yum.repos.d

新建一個文件virtualbox.repo, 輸入如下內容：

01 02 03 04 05 06 07

[virtualbox] name=Oracle Linux / RHEL / CentOS-$releasever / $basearch - VirtualBox baseurl=http://download.virtualbox.org/virtualbox/rpm/el/$releasever/$basearch enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://www.virtualbox.org/download/oracle_vbox.asc

然后執行命令行:

yum clean all yum makecache yum install VirtualBox-5.2

1.2 下載minikube

01	curl -Lo minikube http://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64&& chmod +x minikube&&mv minikube /usr/local/bin/

1.3 下載kubectl

01	curl -Lo kubectl http://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl&& chmod +x kubectl&& mv kubectl /usr/local/bin/&&ln -sf /usr/local/bin/kubectl /usr/bin/kubectl

1.4 下載kubeadm

01	curl -Lo kubeadm http://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubeadm

1.5 下載kubelet

01	curl -Lo kubelet http://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubelet

1.6 初始化環境變量：

export MINIKUBE_WANTUPDATENOTIFICATION=false

export MINIKUBE_WANTREPORTERRORPROMPT=false

export MINIKUBE_HOME=$HOME

export CHANGE_MINIKUBE_NONE_USER=true

mkdir -p $HOME/.kube

touch $HOME/.kube/config

export KUBECONFIG=$HOME/.kube/config

1.7 啟動minikube

01 02

minikube start minikube start --vm-driver=virtualbox 或者 minikube start --vm-driver=none --image-mirror-country='cn' --image-repository=registry.cn-hangzhou.aliyuncs.com/google_containers

--vm-driver=none (本身就是虛擬機，所以不需要將minikube再次安裝到虛機里面，虛機中再安裝虛機我的機器扛不住)

01 02

minikube delete minikube start

正常返回如下

minikube type: Control Plane host: Running kubelet: Running apiserver: Running kubeconfig: Configured

例子：echoserver

echoserver 鏡像是一個簡單的 HTTP 服務器，將請求的 body 攜待的參數返回
這里沒有定義 manifest 文件，而是直接指定 image 做 deploy，這一步會啟動一個 deployment 和對應的 pod

sudo kubectl create deployment hello-minikube \--image=registry.cn-hangzhou.aliyuncs.com/google_containers/echoserver:1.10

暴露端口，這一步會啟動一個 service

sudo kubectl expose deployment hello-minikube --type=NodePort --port=8080

查看 pod 的狀態

sudo kubectl get pod sudo kubectl get pods sudo kubectl get pods -o wide

get pod 的返回

NAME READY STATUS RESTARTS AGE hello-minikube-7df785b6bb-v2phl 1/1 Running 0 5m51s

查看 pod 的信息

sudo kubectl describe pod hello-minikube

describe pod 的返回

Name: hello-minikube-7df785b6bb-mw6kv Namespace: default Priority: 0 Node: lin-virtualbox/100.98.137.196 Start Time: Wed, 10 Jun 2020 16:30:18 +0800 Labels: app=hello-minikubepod-template-hash=7df785b6bb Annotations: <none> Status: Running IP: 172.17.0.6 IPs:IP: 172.17.0.6 Controlled By: ReplicaSet/hello-minikube-7df785b6bb Containers:echoserver:Container ID: docker://ca6c7070ef7afc260f6fe6538da49e91bc60ba914b623d6080b03bd2886343b3Image: registry.cn-hangzhou.aliyuncs.com/google_containers/echoserver:1.10Image ID: docker-pullable://registry.cn-hangzhou.aliyuncs.com/google_containers/echoserver@sha256:56bec57144bd3610abd4a1637465ff491dd78a5e2ae523161569fa02cfe679a8Port: <none>Host Port: <none>State: RunningStarted: Wed, 10 Jun 2020 16:30:21 +0800Ready: TrueRestart Count: 0Environment: <none>Mounts:/var/run/secrets/kubernetes.io/serviceaccount from default-token-znf6q (ro) Conditions:Type StatusInitialized TrueReady TrueContainersReady TruePodScheduled True Volumes:default-token-znf6q:Type: Secret (a volume populated by a Secret)SecretName: default-token-znf6qOptional: false QoS Class: BestEffort Node-Selectors: <none> Tolerations: node.kubernetes.io/not-ready:NoExecute for 300snode.kubernetes.io/unreachable:NoExecute for 300s Events: <none>

查看 deployment 的狀態

sudo kubectl get deployment

get deployment 的返回

NAME READY UP-TO-DATE AVAILABLE AGE hello-minikube 1/1 1 1 80m

查看 service 的狀態

sudo minikube service hello-minikube --url# orsudo minikube service hello-minikube

返回

http://100.98.137.196:31526# or|-----------|----------------|-------------|-----------------------------| | NAMESPACE | NAME | TARGET PORT | URL | |-----------|----------------|-------------|-----------------------------| | default | hello-minikube | 8080 | http://100.98.137.196:31526 | |-----------|----------------|-------------|-----------------------------|

向 echoserver 發送請求

curl -X POST -d '{"abc":123}' http://100.98.137.196:31526/api/v1/hello

返回

Hostname: hello-minikube-7df785b6bb-v2phlPod Information:-no pod information available-Server values:server_version=nginx: 1.13.3 - lua: 10008Request Information:client_address=172.17.0.1method=POSTreal path=/api/v1/helloquery=request_version=1.1request_scheme=httprequest_uri=http://100.98.137.196:8080/api/v1/helloRequest Headers:accept=*/*content-length=11content-type=application/x-www-form-urlencodedhost=100.98.137.196:31384user-agent=curl/7.47.0Request Body: {&quot;abc&quot;:123}

刪除 service

sudo kubectl delete services hello-minikube

刪除 service 后 Pod 不受影響還在 running

刪除 deployment 后 Pod 才會被刪除

sudo kubectl delete deployment hello-minikube 超強干貨來襲 云風專訪：近40年碼齡，通宵達旦的技術人生

總結

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