1个pods 多个containers

root@instance-21uc4fiv-1:~# kubectl get pods

NAME                          READY     STATUS    RESTARTS   AGE

liveness-exec                 1/1       Running   37         2h

nginx-64f497f8fd-wvz62        1/1       Running   0          2h

nginxredis-75fc96f96b-6pv5g   2/2       Running   0          23m

root@instance-21uc4fiv-1:~# kubectl exec -it nginxredis-75fc96f96b-6pv5g /bin/bash

Defaulting container name to redis.

Use 'kubectl describe pod/nginxredis-75fc96f96b-6pv5g -n default' to see all of the containers in this pod.

root@nginxredis-75fc96f96b-6pv5g:/data# ls

root@nginxredis-75fc96f96b-6pv5g:/data# cat /etc/hosts

# Kubernetes-managed hosts file.

127.0.0.1       localhost

::1     localhost ip6-localhost ip6-loopback

fe00::0 ip6-localnet

fe00::0 ip6-mcastprefix

fe00::1 ip6-allnodes

fe00::2 ip6-allrouters

172.16.2.6      nginxredis-75fc96f96b-6pv5g

root@nginxredis-75fc96f96b-6pv5g:/data# exit

exit

root@instance-21uc4fiv-1:~# kubectl exec -it nginxredis-75fc96f96b-6pv5g -c nginx /bin/bash

root@nginxredis-75fc96f96b-6pv5g:/# cat /etc/hosts

# Kubernetes-managed hosts file.

127.0.0.1       localhost

::1     localhost ip6-localhost ip6-loopback

fe00::0 ip6-localnet

fe00::0 ip6-mcastprefix

fe00::1 ip6-allnodes

fe00::2 ip6-allrouters

172.16.2.6      nginxredis-75fc96f96b-6pv5g

root@nginxredis-75fc96f96b-6pv5g:/# hostname

nginxredis-75fc96f96b-6pv5g

root@nginxredis-75fc96f96b-6pv5g:/# ps

bash: ps: command not found

root@nginxredis-75fc96f96b-6pv5g:/# exit

exit

command terminated with exit code 127

root@instance-21uc4fiv-1:~# kubectl exec -it nginxredis-75fc96f96b-6pv5g -c redis /bin/bash

root@nginxredis-75fc96f96b-6pv5g:/data#  cat /etc/hosts

# Kubernetes-managed hosts file.

127.0.0.1       localhost

::1     localhost ip6-localhost ip6-loopback

fe00::0 ip6-localnet

fe00::0 ip6-mcastprefix

fe00::1 ip6-allnodes

fe00::2 ip6-allrouters

172.16.2.6      nginxredis-75fc96f96b-6pv5g

root@nginxredis-75fc96f96b-6pv5g:/data# docker ps

bash: docker: command not found

root@nginxredis-75fc96f96b-6pv5g:/data# exit

exit

command terminated with exit code 127

root@instance-21uc4fiv-1:~#            

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

  annotations:

    deployment.kubernetes.io/revision: "1"

  creationTimestamp: 2019-03-24T03:14:31Z

  generation: 1

  labels:

    run: nginx

  name: nginxredis

  namespace: default

  resourceVersion: "18270"

  selfLink: /apis/extensions/v1beta1/namespaces/default/deployments/nginx

  uid: f0f12438-4de2-11e9-b20d-fa163effceaa

spec:

  progressDeadlineSeconds: 600

  replicas: 1

  revisionHistoryLimit: 2

  selector:

    matchLabels:

      run: nginx

  strategy:

    rollingUpdate:

      maxSurge: 25%

      maxUnavailable: 25%

    type: RollingUpdate

  template:

    metadata:

      creationTimestamp: null

      labels:

        run: nginx

    spec:

      containers:                                    

      - image: redis

        imagePullPolicy: Always

        name: redis

        resources: {}

        terminationMessagePath: /dev/termination-log1

        terminationMessagePolicy: File

      - image: nginx

        imagePullPolicy: Always

        name: nginx

        resources: {}

        terminationMessagePath: /dev/termination-log

        terminationMessagePolicy: File

      dnsPolicy: ClusterFirst

      restartPolicy: Always

      schedulerName: default-scheduler

      securityContext: {}

      terminationGracePeriodSeconds: 30

status:

  availableReplicas: 1

  conditions:

  - lastTransitionTime: 2019-03-24T03:14:48Z

    lastUpdateTime: 2019-03-24T03:14:48Z

    message: Deployment has minimum availability.

    reason: MinimumReplicasAvailable

    status: "True"

    type: Available

  - lastTransitionTime: 2019-03-24T03:14:31Z

    lastUpdateTime: 2019-03-24T03:14:48Z

    message: ReplicaSet "nginx-64f497f8fd" has successfully progressed.

    reason: NewReplicaSetAvailable

    status: "True"       

    type: Progressing

  observedGeneration: 1

  readyReplicas: 1

  replicas: 1

  updatedReplicas: 1