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Warning!

Puhti and Mahti are being decommissioned in stages, and their storage areas will become fully unavailable from 15 October 2026. Clean up unnecessary files and move any data you need to keep by 31 August 2026. See the Roihu data migration guide for instructions on transferring your data to Roihu.

Puhti scratch is very full: keep only active data there and move or delete everything else. No new Puhti scratch quota will be granted.

Tag Immutability

Tag immutability prevents container image tags from being overwritten or modified after they are pushed.

Normally, users can push a new image with the same tag (for example latest). This can cause issues because deployments may use different image versions without noticing.

Tag immutability ensures that once a tag is created, it cannot be changed.

Benefits

  • Prevents accidental image overwrites
  • Improves deployment consistency
  • Strengthens supply chain security
  • Ensures traceability of image versions

How to Configure Tag Immutability

To configure tag immutability, open the Project in Satama and go to Policy tab.

Policy tab

Click on Tag Immutability section. Click on Add rule. A pop-up window will open

Add tag Immutability

Create a rule specifying which tags should be immutable.