Kubernetes Pod Manifest: Difference between revisions

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Line 48: Line 48:
   - name: mount-0
   - name: mount-0
     hostPath:
     hostPath:
       path: /home/ec2-user
       path: '/home/ec2-user/data'


=.spec Elements=
=.spec Elements=

Revision as of 23:53, 11 September 2019

External

Internal

Overview

Example

apiVersion: v1
kind: Pod
metadata:
  name: loop
  labels:
    color: blue
spec:
  dnsPolicy: ClusterFirst
  restartPolicy: Always
  schedulerName: default-scheduler
  terminationGracePeriodSeconds: 120
  containers:
  - name: loop-container
    image: docker.io/ovidiufeodorov/loop:latest
    imagePullPolicy: Always
    resources:
      limits:
        memory: '4096Mi'
        cpu: '1000m'
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    ports:
    - containerPort: 8080
      protocol: TCP
    - containerPort: 8787
      protocol: TCP
    env:
    - name: SOMETHING
       value: 'something else'
    volumeMounts:
    - name: 'mount-0'
      mountPath: '/data'
      subPath: 'content'
  volumes:
  - name: mount-0
    hostPath:
      path: '/home/ec2-user/data'

.spec Elements

https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/#podspec-v1-core

hostname

Optional field. If not specified, the hostname exposed to the processes running inside the pod will be the name of the pod.

restartPolicy

Optional field.

containers

name

image

imagePullPolicy

The value is one of "Always", "Never", "IfNotPresent". Defaults to "Always" if ":latest" tag is specified, or "IfNotPresent" otherwise.

TODO: https://kubernetes.io/docs/concepts/containers/images#updating-images

volumeMounts

Pod volumes to mount into the container's filesystem.

name

The identifier of the volume. Must match the name the volume specification was declared under, in the volumes section of the specification.

mountPath

Specifies the path within the container where the volume will be mounted. Must not contain ':'.

subPath

Specifies the path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).

readOnly

volumes

List of volumes that can be mounted by containers belonging to the pod.

TODO: https://kubernetes.io/docs/concepts/storage/volumes