---
title: Disk Cleanup Runbook
tags: [disk, cleanup, storage, operations]
owner: sre
updated: 2026-06-12
---

# Disk Cleanup Runbook

## When to use it

- `disk usage > 85%` alert on /tmp or /var.
- Job failures with `No space left on device`.
- Before scheduled node maintenance.

## Procedure

1. List candidate files: `find /tmp -type f -mtime +7`.
2. Confirm none are in use by an active process.
3. Run the `disk-cleanup` webhook to remove /tmp files older than 7 days.
4. Re-verify disk usage.

## Related webhooks

- disk-cleanup