This is a Kubernetes controller that resizes disks of pods running, if usage is above a certain threshold.
The controller runs a CronJob every 5 minutes that lists all PersistentVolumeClaims in the cluster. For each PVC, it checks if the PVC is bound to a Pod and if the Pod is running. If so, it checks the disk usage of the Pod. If the disk usage is above 85%, it resizes the PVC to a bigger size (110%).
Helm is the recommended way to install the controller on your cluster.
helm install disk-resizer-controller oci://ghcr.io/cubos/charts/disk-resizer-controller \
--namespace kube-system \
--set secrets.env.CLUSTER_NAME=your-cluster-name \
--set secrets.env.SLACK_WEBHOOK_URL="https://hooks.slack.com/services/your/slack/webhook/url" \
--version <version>| Name | Description | Required |
|---|---|---|
CLUSTER_NAME |
Name of the cluster (used for notifications) | no |
SENTRY_DSN |
Sentry DSN for error reporting | no |
SLACK_WEBHOOK_URL |
Slack webhook URL for notifications | no |
PRs are welcome! Please make sure to check ESLint and Prettier before submitting a PR.
By submitting a PR, you agree to license your work under the GNU Lesser General Public License v3.0.