1.编译busybox-env.yaml文件

apiVersion: v1 kind: Pod metadata: name: busybox-env spec: containers: - name: busybox-container image: busybox command: - sleep - "3600" env: - name: MY_NODE_NAME # 获取node名称 valueFrom: fieldRef: fieldPath: spec.nodeName - name: MY_POD_NAME # 获取pod名称 valueFrom: fieldRef: fieldPath: metadata.name - name: MY_POD_NAMESPACE # 获取pod的namespace valueFrom: fieldRef: fieldPath: metadata.namespace - name: MY_POD_IP # 获取pod IP valueFrom: fieldRef: fieldPath: metadata.name

2.应用yaml

$ kubectl apply -f busybox-env.yaml

3.进入容器内部检察变量是否存在

$ kubectl exec -it busybox-env sh $ env | egrep "MY_POD" MY_POD_NAMESPACE=default MY_POD_IP=busybox-env MY_POD_NAME=busybox-env $ env | egrep "MY_NODE" MY_NODE_NAME=k8s-node01

可以看到变量是已经加载到容器的环境变量中了

kubernetes 容器内获取Pod信息

，