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doc(upgrade): document migration steps from hawtio-operator 0.3.0 to 0.4.0 #49 #51

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doc(upgrade): document migration steps from hawtio-operator 0.3.0 to 0.4.0 #49 #51

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4 changes: 4 additions & 0 deletions README.md
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A [Kubernetes](https://kubernetes.io) operator, based on the [Operator SDK](https://sdk.operatorframework.io), that operates [Hawtio Online](https://github.com/hawtio/hawtio-online).

## Upgrading

See [Upgrading Guide](docs/Upgrading.md) when you are upgrading your hawtio-operator installation.

## Resources

The `Hawtio` CRD defines the resource the operator uses to configure a Hawtio Online operand, e.g.:
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19 changes: 19 additions & 0 deletions docs/upgrading.md
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# Hawtio Operator Upgrading Guide

This document describes important changes between hawtio-operator versions and instructions on how to upgrade your operator installation.

- [hawtio-operator 0.4.0](#hawtio-operator-0.4.0)

## hawtio-operator 0.4.0

### `spec.rbac.enabled` field is removed from CRD

From 0.4.0 RBAC support is always enabled, so the field to toggle the feature is removed from the CRD ([#48](https://github.com/hawtio/hawtio-operator/pull/48)). If your `Hawtio` custom resource contains the following field (whether it is `true` or `false`), remove it from the yaml definition.

```yaml
spec:
rbac:
enabled: true
```

**NOTE:** From 0.4.0 and onwards, if you don't provide `spec.rbac.configMap` RBAC is still activated with the default [ACL](https://github.com/hawtio/hawtio-online/blob/master/docker/ACL.yaml).