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Upgrade documentation includes notes about storage version migration (#2369) 

* include notes when upgrading about the storage version migration k8s job

* typos and white space

* Update upgrade-installation.md

Use artifact helper

* Update docs/install/upgrade-installation.md

Co-Authored-By: Matt Moore <mattmoor@vmware.com>

Co-authored-by: Matt Moore <mattmoor@vmware.com>
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Dave Protasowski 2020-04-10 09:57:05 -04:00 committed by GitHub
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docs/install/upgrade-installation.md
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@ -59,6 +59,23 @@ If you have a plug-in installed, make sure to upgrade it at the same time as
you upgrade your Knative components. For example, if you have the
monitoring plug-in installed, upgrade it alongside Knative Serving and Eventing.
### Upgrade existing resources to the latest stored version
Our custom resources are stored within Kubernetes at a particular version.
As we introduce newer and remove older versions you'll need to migrate our resources
to the designated stored version. This ensures removing older versions
will succeed when upgrading.
For the various subprojects - we have a K8s job to help operators perform this migration.
The release notes for each release will explicitly whether a migration is required.
ie.
```bash
kubectl apply --filename {{< artifact repo="serving" file="serving-storage-version-migration.yaml" >}}
```
## Performing the upgrade
To upgrade, apply the `.yaml` files for the subsequent minor versions of all
@ -138,4 +155,3 @@ for the old pods as they are cleaned up.
If necessary, repeat the upgrade process until you reach your desired minor
version number.