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kubernetes replica sets: |
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aanmaken manifest met replicas: 1 |
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[ger@master ~]$ cat kuard-rs.yaml |
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apiVersion: extensions/v1beta1 |
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kind: ReplicaSet |
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metadata: |
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name: kuard |
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spec: |
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replicas: 1 |
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template: |
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metadata: |
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labels: |
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app: kuard |
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version: "2" |
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spec: |
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containers: |
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- name: kuard |
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image: "gcr.io/kuar-demo/kuard-amd64:2" |
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[ger@master ~]$ kubectl apply -f ./kuard-rs.yaml |
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replicaset.extensions/kuard created |
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check: |
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[ger@master ~]$ kubectl get pods |
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NAME READY STATUS RESTARTS AGE |
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kuard-f25dt 1/1 Running 0 24s |
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meer info: |
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[ger@master ~]$ kubectl describe rs kuard |
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Name: kuard |
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Namespace: default |
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Selector: app=kuard,version=2 |
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Labels: app=kuard |
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version=2 |
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Annotations: kubectl.kubernetes.io/last-applied-configuration: |
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{"apiVersion":"extensions/v1beta1","kind":"ReplicaSet","metadata":{"annotations":{},"name":"kuard","namespace":"default"},"spec":{"replica... |
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Replicas: 1 current / 1 desired |
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Pods Status: 1 Running / 0 Waiting / 0 Succeeded / 0 Failed |
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Pod Template: |
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Labels: app=kuard |
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version=2 |
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Containers: |
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kuard: |
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Image: gcr.io/kuar-demo/kuard-amd64:2 |
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Port: <none> |
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Host Port: <none> |
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Environment: <none> |
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Mounts: <none> |
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Volumes: <none> |
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Events: |
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Type Reason Age From Message |
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---- ------ ---- ---- ------- |
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Normal SuccessfulCreate 40s replicaset-controller Created pod: kuard-f25dt |
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opschalen naar 4 replica's: |
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[ger@master ~]$ kubectl scale rs kuard --replicas=4 --all |
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replicaset.extensions/kuard scaled |
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[ger@master ~]$ kubectl get pods |
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NAME READY STATUS RESTARTS AGE |
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kuard-66877 0/1 ContainerCreating 0 9s |
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kuard-8trx2 0/1 ContainerCreating 0 9s |
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kuard-dlb2c 0/1 ContainerCreating 0 9s |
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kuard-f25dt 1/1 Running 0 4m59s |
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[ger@master ~]$ kubectl get pods |
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NAME READY STATUS RESTARTS AGE |
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kuard-66877 1/1 Running 0 30s |
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kuard-8trx2 1/1 Running 0 30s |
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kuard-dlb2c 1/1 Running 0 30s |
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kuard-f25dt 1/1 Running 0 5m20s |
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autoscale: |
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[ger@master ~]$ kubectl autoscale rs kuard --min=2 --max=5 --cpu-percent=80 |
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horizontalpodautoscaler.autoscaling/kuard autoscaled |
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check hpa (horizontal pod autoscaler): |
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[ger@master ~]$ kubectl get hpa |
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NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE |
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kuard ReplicaSet/kuard <unknown>/80% 2 5 0 11s |
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