Upgrading Cloud Native Compiler

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Upgrade an existing CNC installation to a newer version with the following commands:

 helm repo update
helm upgrade compiler cnc-helm/prime-cnc -n compiler -f values-override.yaml
kubectl get all -n compiler

If you are upgrading from version 1.6.1 with persistent storage, follow these steps before running the helm upgrade:

Connect into the storage pod:

 kubectl exec --stdin --tty storage-0 -- /bin/sh

Inside the pod run the following command to change permissions:
```
 chown -R 10001 /data && chmod u+rxw /data
```
After the chmod command is completed, you can exit the pod shell with ctrl-d and continue with the helm upgrade.

If you are upgrading from versions prior to 1.7.0, and you are using a custom values.yaml file with parameters for the storage component, rename the yaml block from storage to builtinStorage. For example:

Before

 storage:
  persistentDataVolume:
    enabled: true
    size: "200Gi"
    storageClassName: ""

After

 builtinStorage:
  persistentDataVolume:
    enabled: true
    size: "200Gi"
    storageClassName: ""