Difference between revisions of "Kind: Pod"

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{{lowercase}}
 
{{lowercase}}
  [[apiVersion]]: v1
+
 
  [[kind:]] Pod
+
[[spec.]]
 +
  [[spec.containers]]
 +
[[spec.initContainers]]
 +
[[spec.volumes]]
 +
[[spec.nodeSelector]]
 +
 
 +
Nginx:
 +
{{kind pod nginx}}
 +
 
 +
 
 +
Alpine container to access a PV:
 +
{{alpine cp example}}
 +
 
 +
 
 +
https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
 +
 +
---
 +
apiVersion: v1
 +
  kind: Pod
 
  metadata:
 
  metadata:
   name: nginx
+
   name: frontend
  labels:
+
  [[spec:]]
    env: test
 
  spec:
 
 
   containers:
 
   containers:
   - name: nginx
+
   - name: app
     image: nginx
+
     image: images.my-company.example/app:v4
     imagePullPolicy: IfNotPresent
+
     resources:
   [[nodeSelector]]:
+
      requests:
    disktype: ssd
+
        memory: "64Mi"
 +
        [[cpu:]] "250m"
 +
      limits:
 +
        memory: "128Mi"
 +
        cpu: "500m"
 +
   - name: log-aggregator
 +
    image: images.my-company.example/log-aggregator:v6
 +
    [[resources:]]
 +
      requests:
 +
        memory: "64Mi"
 +
        cpu: "250m"
 +
      limits:
 +
        memory: "128Mi"
 +
        cpu: "500m"
  
  
https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
+
== [[initContainers]] ==
<pre>
+
https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#init-containers-in-use
---
+
apiVersion: v1
apiVersion: v1
+
kind: Pod
kind: Pod
+
metadata:
metadata:
+
   name: myapp-pod
   name: frontend
+
  labels:
spec:
+
    app: myapp
 +
spec:
 
   containers:
 
   containers:
   - name: app
+
   - name: myapp-container
     image: images.my-company.example/app:v4
+
     image: busybox:1.28
     resources:
+
     command: ['sh', '-c', 'echo The app is running! && sleep 3600']
      requests:
+
  [[initContainers]]:
        memory: "64Mi"
+
  - name: init-myservice
        cpu: "250m"
+
    image: busybox:1.28
      limits:
+
    command: ['sh', '-c', "until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo  waiting for myservice; sleep 2; done"]
        memory: "128Mi"
+
   - name: init-mydb
        cpu: "500m"
+
     image: busybox:1.28
   - name: log-aggregator
+
     command: ['sh', '-c', "until nslookup mydb.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]
     image: images.my-company.example/log-aggregator:v6
 
     resources:
 
      requests:
 
        memory: "64Mi"
 
        cpu: "250m"
 
      limits:
 
        memory: "128Mi"
 
        cpu: "500m"
 
</pre>
 
  
 +
== Related ==
 +
* <code>[[dnsPolicy:]]</code>
 +
* [[Kubernetes init containers]]
 +
* <code>[[autoScaler:]]</code>
 +
* <code>[[envFrom:]]</code>
 +
* <code>[[LivenessProbe]]</code>
 +
* <code>[[lifecycle:]]</code>
 +
* <code>[[ports:]]</code>
 +
* [[Kubernetes, env:]]
 +
* <code>[[nodeName]]</code>
 +
* <code>[[NodeSelector]]</code>
 +
* <code>[[kind: ReplicaSet]]</code>
 +
* [[kubectl run]]
  
 
== See also ==
 
== See also ==
* [[Kind (Kubernetes)]]
+
* {{kind: Pod}}
* {{K8s}}
+
* {{Pods}}
  
 
[[Category:K8s]]
 
[[Category:K8s]]

Latest revision as of 16:17, 8 February 2024

spec.
spec.containers
spec.initContainers
spec.volumes
spec.nodeSelector

Nginx:

 apiVersion: v1
kind: Pod
metadata:
  name: nginx
  labels:
    env: test
spec:
  containers:
  - name: nginx
    image: nginx
    imagePullPolicy: IfNotPresent
  nodeSelector:
    disktype: ssd


Alpine container to access a PV:

 apiVersion: v1
kind: Pod
metadata:
  name: myalpinewithvolume
spec:
  containers:
  - name: alpine
    image: alpine:latest
    command: ['ash']
    tty: true
    stdin: true
    volumeMounts:
    - name: myvolume
      mountPath: /myvolume
  volumes:
  - name: myvolume
    persistentVolumeClaim:
      claimName: myPVCtoMount


https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

---
apiVersion: v1
kind: Pod
metadata:
  name: frontend
spec:
  containers:
  - name: app
    image: images.my-company.example/app:v4
    resources:
      requests:
        memory: "64Mi"
        cpu: "250m"
      limits:
        memory: "128Mi"
        cpu: "500m"
  - name: log-aggregator
    image: images.my-company.example/log-aggregator:v6
    resources:
      requests:
        memory: "64Mi"
        cpu: "250m"
      limits:
        memory: "128Mi"
        cpu: "500m"


initContainers[edit]

https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#init-containers-in-use

apiVersion: v1
kind: Pod
metadata:
 name: myapp-pod
 labels:
   app: myapp
spec:
 containers:
 - name: myapp-container
   image: busybox:1.28
   command: ['sh', '-c', 'echo The app is running! && sleep 3600']
 initContainers:
 - name: init-myservice
   image: busybox:1.28
   command: ['sh', '-c', "until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo  waiting for myservice; sleep 2; done"]
 - name: init-mydb
   image: busybox:1.28
   command: ['sh', '-c', "until nslookup mydb.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]

Related[edit]

See also[edit]

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