k8s学习笔记二之使用gcloud了解volume

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gcloud config set compute/zone asia-northeast1-b

gcloud config set project my-k8s-codelab-225201

gcloud container clusters create k8s-101

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cat <<	EOF > pod-nginx.yaml

apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - name: nginx
    image: nginx:1.7.9
    ports:
    - containerPort: 80
EOF

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kubectl create -f  pod-nginx.yaml

kubectl get pods

Pod 的 IP 都是外部不可见的。最便捷的测试 Pod 是否工作的方法是创建一个 busybox pod 并且在上面远程运行命令。

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kubectl run busybox --image=busybox --restart=Never --tty -i --generator=run-pod/v1 --env "POD_IP=$(kubectl get pod nginx -o go-template='{{.status.podIP}}')"
wget -qO- http://$POD_IP
exit
kubectl delete pod busybox 

kubectl delete pod nginx

valume

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cat << EOF > pod-redis.yaml
apiVersion: v1
kind: Pod
metadata:
    name: redis
spec:
    containers:
    - name: redis
      image: redis
      volumeMounts:
      - name: redis-persistent-storage
        mountPath: /data/redis
    volumes:
      - name: redis-persistent-storage
        emptyDir: {}
EOF

EmptyDir: 在 node 上创建一个和 pod 同生命周期的文件夹，容器出错或重启都会使用这个文件夹。
HostPath: 挂在文件到一个系统上已存目录上 (例如 /var/logs

多容器

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cat <<EOF > pod-multi-web.yaml
apiVersion: v1
kind: Pod
metadata:
    name: multi-web
spec:
    containers:
    - name: nginx
      image: nginx
      volumeMounts:
      - name: www-data
        mountPath: /srv/wwww
        readOnly: true
    - name: git-monitor
      image: kubernetes/git-monitor
      env:
      - name: GIT_REPO
        value: https://github.com/wx11055/wx11055.github.io
      volumeMounts: 
      - mountPath: /data
        name: www-data
    volumes:
    - name: www-data
      emptyDir: {}
EOF

[[k8s学习笔记一之使用gcloud]]

文章目录

k8s学习笔记二之使用gcloud了解volume

valume

多容器