Mac--安装kubernetes并运行echoserver

安装minikube

curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.15.0/minikube-darwin-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/

安装kubectl

curl -Lo kubectl http://storage.googleapis.com/kubernetes-release/release/v1.5.1/bin/darwin/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/

启动

minikube start

kubectl run hello-minikube --image=registry.cn-hangzhou.aliyuncs.com/google-container/echoserver:1.4 --port=8080

kubectl expose deployment hello-minikube --type=NodePort

kubectl get pod

问题

pod的status都在ContainerCreating，查看

kubectl describe pods

出错部分log

Events:

  FirstSeen    LastSeen    Count    From            SubobjectPath    Type        Reason        Message

  ---------    --------    -----    ----            -------------    --------    ------        -------

  8m        8m        1    {default-scheduler }            Normal        Scheduled    Successfully assigned hello-minikube-957602326-t9mzf to minikube

  6m        3m        2    {kubelet minikube}            Warning        FailedSync    Error syncing pod, skipping: failed to "StartContainer" for "POD" with ErrImagePull: "image pull failed for gcr.io/google_containers/pause-amd64:3.0, this may be because there are no credentials on this request.  details: (Error response from daemon: Get https://gcr.io/v1/_ping: dial tcp 64.233.187.82:443: i/o timeout)"

  6m    1m    10    {kubelet minikube}        Warning    FailedSync    Error syncing pod, skipping: failed to "StartContainer" for "POD" with ImagePullBackOff: "Back-off pulling image \"gcr.io/google_containers/pause-amd64:3.0\""

解决问题

参考k8s初游： minikube启动docker镜像这篇文章的方法，这里我们用阿里的镜像

minikube ssh

docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0

docker tag registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0 gcr.io/google_containers/pause-amd64:3.0

删除pod再观察下

kubectl delete pods xxxx

kubectl get pod --all-namespaces

这下变成running了

NAME                             READY     STATUS    RESTARTS   AGE

hello-minikube-957602326-gf17s   1/1       Running   0          40s

跑下demo

curl $(minikube service hello-minikube --url)

输出

CLIENT VALUES:

client_address=172.17.0.1

command=GET

real path=/

query=nil

request_version=1.1

request_uri=http://192.168.99.101:8080/

SERVER VALUES:

server_version=nginx: 1.10.0 - lua: 10001

HEADERS RECEIVED:

accept=*/*

host=192.168.99.101:31860

user-agent=curl/7.43.0

BODY:

解决kube-addon-manager-minikube的ImagePullBackOff问题

查看详情

kubectl describe --namespace=kube-system po kube-addon-manager-minikube

发现拉取gcr.io/google-containers/kube-addon-manager:v6.1失败，使用阿里云的镜像fix一下

minikube ssh

docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/kube-addon-manager-amd64:v6.1

docker tag registry.cn-hangzhou.aliyuncs.com/google-containers/kube-addon-manager-amd64:v6.1 gcr.io/google-containers/kube-addon-manager:v6.1

使用

kubectl get pods --all-namespaces

正常了

NAMESPACE     NAME                             READY     STATUS    RESTARTS   AGE

default       hello-minikube-957602326-gf17s   1/1       Running   1          44m

kube-system   kube-addon-manager-minikube      1/1       Running   0          55m

minikube dashboard

kubectl get pod --all-namespaces

NAMESPACE     NAME                             READY     STATUS              RESTARTS   AGE

default       hello-minikube-957602326-gf17s   1/1       Running             1          47m

kube-system   kube-addon-manager-minikube      1/1       Running             0          58m

kube-system   kube-dns-v20-m9p7t               0/3       ContainerCreating   0          2m

kube-system   kubernetes-dashboard-k6z7w       0/1       ImagePullBackOff    0          2m

查看下

kubectl describe --namespace=kube-system po kube-dns-v20-m9p7t

fix

minikube ssh

docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/kubedns-amd64:1.9

docker tag registry.cn-hangzhou.aliyuncs.com/google-containers/kubedns-amd64:1.9 gcr.io/google_containers/kubedns-amd64:1.9

docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/kube-dnsmasq-amd64:1.4

docker tag registry.cn-hangzhou.aliyuncs.com/google-containers/kube-dnsmasq-amd64:1.4 gcr.io/google_containers/kube-dnsmasq-amd64:1.4

docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/exechealthz-amd64:1.2

docker tag registry.cn-hangzhou.aliyuncs.com/google-containers/exechealthz-amd64:1.2 gcr.io/google_containers/exechealthz-amd64:1.2

fix

kubectl describe --namespace=kube-system po kubernetes-dashboard-k6z7w

docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/kubernetes-dashboard-amd64:v1.5.0

docker tag registry.cn-hangzhou.aliyuncs.com/google-containers/kubernetes-dashboard-amd64:v1.5.0 gcr.io/google_containers/kubernetes-dashboard-amd64:v1.5.1

最后再次打开dashboard

minikube dashboard

看到久违的界面了

屏幕快照 2017-01-21 下午8.08.56.png

巴特西