140 lines
3.5 KiB
Markdown
140 lines
3.5 KiB
Markdown
---
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title: Configure a Pod Quota for a Namespace
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---
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{% capture overview %}
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This page shows how to set a quota for the total number of Pods that can run
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in a namespace. You specify quotas in a
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[ResourceQuota](/docs/api-reference/v1.7/#resourcequota-v1-core)
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object.
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{% endcapture %}
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{% capture prerequisites %}
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{% include task-tutorial-prereqs.md %}
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{% endcapture %}
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{% capture steps %}
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## Create a namespace
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Create a namespace so that the resources you create in this exercise are
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isolated from the rest of your cluster.
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```shell
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kubectl create namespace quota-pod-example
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```
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## Create a ResourceQuota
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Here is the configuration file for a ResourceQuota object:
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{% include code.html language="yaml" file="quota-pod.yaml" ghlink="/docs/tasks/administer-cluster/quota-pod.yaml" %}
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Create the ResourceQuota:
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```shell
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kubectl create -f https://k8s.io/docs/tasks/administer-cluster/quota-pod.yaml --namespace=quota-pod-example
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```
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View detailed information about the ResourceQuota:
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```shell
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kubectl get resourcequota pod-demo --namespace=quota-pod-example --output=yaml
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```
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The output shows that the namespace has a quota of two Pods, and that currently there are
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no Pods; that is, none of the quota is used.
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```yaml
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spec:
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hard:
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pods: "2"
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status:
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hard:
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pods: "2"
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used:
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pods: "0"
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```
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Here is the configuration file for a Deployment:
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{% include code.html language="yaml" file="quota-pod-deployment.yaml" ghlink="/docs/tasks/administer-cluster/quota-pod-deployment.yaml" %}
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In the configuration file, `replicas: 3` tells Kubernetes to attempt to create three Pods, all running the same application.
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Create the Deployment:
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```shell
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kubectl create -f https://k8s.io/docs/tasks/administer-cluster/quota-pod-deployment.yaml --namespace=quota-pod-example
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```
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View detailed information about the Deployment:
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```shell
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kubectl get deployment pod-quota-demo --namespace=quota-pod-example --output=yaml
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```
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The output shows that even though the Deployment specifies three replicas, only two
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Pods were created because of the quota.
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```yaml
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spec:
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...
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replicas: 3
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...
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status:
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availableReplicas: 2
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...
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lastUpdateTime: 2017-07-07T20:57:05Z
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message: 'unable to create pods: pods "pod-quota-demo-1650323038-" is forbidden:
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exceeded quota: pod-demo, requested: pods=1, used: pods=2, limited: pods=2'
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```
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## Clean up
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Delete your namespace:
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```shell
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kubectl delete namespace quota-pod-example
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```
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{% endcapture %}
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{% capture whatsnext %}
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### For cluster administrators
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* [Configure Default Memory Requests and Limits for a Namespace](docs/tasks/administer-cluster/default-memory-request-limit/)
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* [Configure Default CPU Requests and Limits for a Namespace](docs/tasks/administer-cluster/default-cpu-request-limit/)
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* [Configure Minimum and Maximum Memory Constraints for a Namespace](/docs/tasks/administer-cluster/memory-constraint-namespace/)
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* [Configure Minimum and Maximum CPU Constraints for a Namespace](/docs/tasks/administer-cluster/cpu-constraint-namespace/)
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* [Configure Memory and CPU Quotas for a Namespace](/docs/tasks/administer-cluster/quota-memory-cpu-namespace/)
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* [Configure Quotas for API Objects](/docs/tasks/administer-cluster/quota-api-object/)
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### For app developers
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* [Assign Memory Resources to Containers and Pods](/docs/tasks/configure-pod-container/assign-memory-resource/)
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* [Assign CPU Resources to Containers and Pods](docs/tasks/configure-pod-container/assign-cpu-resource/)
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* [Configure Quality of Service for Pods](/docs/tasks/configure-pod-container/quality-service-pod/)
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{% endcapture %}
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{% include templates/task.md %}
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