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Automated Docker Cleanup ​

Coolify includes an automated Docker cleanup feature to prevent servers from running out of disk space. This guide explains how to configure it and what it does.

Configuration ​

You can configure the automated cleanup under: Servers > YOUR_SERVER > Configuration > Advanced

Available Settings ​

  1. Docker Cleanup Threshold

    • Sets the disk percentage threshold that triggers the cleanup.
    • Example: If set to 80%, cleanup will be triggered when disk usage exceeds 80%.

  2. Docker Cleanup Frequency

Tip

  • We recommend enabling Force Docker Cleanup and scheduling cleanups using cron syntax.
  • This provides more reliable cleanup behavior compared to relying on a disk threshold.
  1. Optional Cleanups
    • Enable unused volumes cleanup (note: this can lead to data loss).
    • Enable unused networks cleanup.

How It Works ​

Safety Measures ​

  • If there is an ongoing deployment, the cleanup will not be triggered to prevent any issues, like deleting the image that is currently being used.
  • Only Coolify-managed resources are affected.

Cleanup Process ​

When triggered (either by schedule or disk threshold), the system performs the following actions:

  • Removes stopped containers managed by Coolify (no data loss as containers are non-persistent).
  • Deletes unused Docker images.
  • Clears Docker build cache.
  • Removes old versions of Coolify helper images.
  • Removes unused Docker volumes (if enabled).
  • Removes unused Docker networks (if enabled).