helmless

Cloudzero Helmless

Helmless is a tool that compares configured values against default values from a Helm chart, producing a minimal YAML file containing only the differences. This is useful for understanding what values have been customized in a Helm deployment of the CloudZero Agent for Kubernetes.

Usage

helmless [flags]

Flags

• -c, --configured string - Path to the configured values YAML file (default "configured-values.yaml")
• -d, --defaults string - Path to the default values YAML file (default "default-values.yaml")
• -o, --output string - Path to write the output YAML file (default "-" for stdout)

Example Workflow

1. Extract the current values from a deployed Helm release:

   kubectl -n cza get cm/cz-agent-config-values -o jsonpath='{.data.values\.yaml}' > configured-values.yaml
   

2. Get the default values from the Helm chart:

   helm show values ./helm > default-values.yaml
   

3. Compare the values and generate a minimal overrides file:

   cloudzero-helmless \
       --configured configured-values.yaml \
       --defaults default-values.yaml \
       --output overrides.yaml
   

The resulting overrides.yaml will contain only the values that differ from the defaults, making it easy to understand what has been customized.

Limitations

The kubeStateMetrics object is excluded from the comparison due to limitations in the helm show values output