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Upgrade Notes

3.7.166

Parent database default volume size increased to 15Gi

The default value of parent.database.volumesize has been increased from 5Gi to 15Gi.

This change better reflects the storage requirements of a Netdata parent node across a wider range of real-world deployments.

Who is affected

Only users who rely on the default value — i.e., who have not explicitly set parent.database.volumesize in their own values.yaml or --set flags.

Potential upgrade failure

If your cluster's StorageClass does not have allowVolumeExpansion: true, helm upgrade will fail with an error similar to:

PersistentVolumeClaims "netdata-parent-database" is forbidden: only dynamically provisioned
pvc can be resized and the storageclass that provisions the pvc must support resize

How to avoid this

Pin the volume size to your current value to prevent any resize attempt:

parent:
  database:
    volumesize: 5Gi

Or, if you want to expand but your StorageClass does not support automatic expansion, manually resize the PVC before running helm upgrade:

kubectl patch pvc netdata-parent-database -p '{"spec":{"resources":{"requests":{"storage":"15Gi"}}}}'

Note that manual resizing also requires the StorageClass to support volume expansion. On clusters where expansion is not supported at all, keep the old value pinned in your values.