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openstack: add note about compressed image format #2416

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merged 1 commit into from Sep 30, 2019
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openstack: add note about compressed image format #2416

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14 changes: 13 additions & 1 deletion docs/user/openstack/README.md
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Expand Up @@ -97,7 +97,19 @@ Etcd is run on your control plane nodes, and it has disk requirements that need

### Red Hat Enterprise Linux CoreOS (RHCOS)

Get the latest RHCOS image [here](https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/pre-release/latest/). The installer requires a proper RHCOS image in the OpenStack cluster or project:
Get the latest RHCOS image [here](https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/pre-release/latest/).

**NOTE:** The OpenStack QCOW2 image is delivered in compressed format. You will need to provide the necessary options to `curl` or `wget` when downloading the image, otherwise your image may appear corrupted.

For example:

```sh
curl --compressed -J -L -O <url of OpenStack QCOW2>

wget --compresion=auto <url of OpenStack QCOW2>
```

The installer requires a proper RHCOS image in the OpenStack cluster or project:

```sh
openstack image create --container-format=bare --disk-format=qcow2 --file rhcos-${RHCOSVERSION}-openstack.qcow2 rhcos
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