94 lines
2.6 KiB
Plaintext
94 lines
2.6 KiB
Plaintext
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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