https://github.com/tkestack/cron-hpa

Cron Horizontal Pod Autoscaler(CronHPA)
https://github.com/tkestack/cron-hpa

hpa kubernetes

Last synced: 23 days ago
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Cron Horizontal Pod Autoscaler(CronHPA)

• Host: GitHub
• URL: https://github.com/tkestack/cron-hpa
• Owner: tkestack
• License: other
• Created: 2019-12-05T08:53:03.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2023-05-11T20:38:43.000Z (over 1 year ago)
• Last Synced: 2024-10-04T18:06:45.952Z (2 months ago)
• Topics: hpa, kubernetes
• Language: Go
• Homepage:
• Size: 6.8 MB
• Stars: 60
• Watchers: 7
• Forks: 11
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-cloud-native - CronHPA - Cron Horizontal Pod Autoscaler. (Autoscaler)

README

        
# CronHPA

Cron Horizontal Pod Autoscaler(CronHPA) enables us to auto scale workloads(those support `scale` subresource, e.g. deployment, statefulset) periodically using [crontab](https://en.wikipedia.org/wiki/Cron) scheme.

`CronHPA` example:

```

apiVersion: extensions.tkestack.io/v1

kind: CronHPA

metadata:

  name: example-cron-hpa

spec:

  scaleTargetRef:

    apiVersion: apps/v1

    kind: Deployment

    name: demo-deployment

  crons:

    - schedule: "0 23 * * 5"  // Set replicas to 60 every Friday 23:00

      targetReplicas: 60

    - schedule: "0 23 * * 7"  // Set replicas to 30 every Sunday 23:00

      targetReplicas: 30

```

More design ideas could be found at [design.md](./design.md).

## Build

``` sh

$ make build

or

$ go build -o bin/cron-hpa-controller .

```

## Run

```sh

# assumes you have a working kubeconfig, not required if operating in-cluster

# It will create CRD `CronHPA` by default.

$ bin/cron-hpa-controller --master=127.0.0.1:8080 --v=5 --stderrthreshold=0   // Assume 127.0.0.1:8080 is k8s master ip:port

or

$ bin/cron-hpa-controller --kubeconfig=$HOME/.kube/config --v=5 --stderrthreshold=0

# create a custom resource of type cron-hpa

$ kubectl create -f artifacts/examples/example-cron-hpa.yaml

# check pods created through the custom resource

$ kubectl get cronhpa

```

## Cleanup

You can clean up the created CustomResourceDefinition with:

    $ kubectl delete crd cronhpas.extensions.tkestack.io