chore(kb/awx): add first installation testing results

knowledge base/awx.md

@@ -3,6 +3,7 @@
 1. [TL;DR](#tldr)
 1. [Installation](#installation)
 1. [Testing](#testing)
+   1. [Create a demo instance on an ARM machine](#create-a-demo-instance-on-an-arm-machine)
 1. [Further readings](#further-readings)
    1. [Sources](#sources)
 
@@ -33,14 +34,72 @@ It is meant to provide a Kubernetes-native installation method for AWX via an AW
 
 ## Testing
 
+### Create a demo instance on an ARM machine
+
+<details>
+  <summary>Run: follow the basic installation guide</summary>
+
+[Guide][basic install]
+
 ```sh
 $ minikube start --cpus=4 --memory=6g --addons=ingress
 …
 🌟  Enabled addons: storage-provisioner, default-storageclass, ingress
 🏄  Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default
 
+$ cd '/tmp'
+
+$ # There was no ARM version of the 'kube-rbac-proxy' image upstream, so it was impossible to just use the `make deploy`
+$ # command as explained in the basic install.
+$ # Defaulting to use quay.io as repository as the ARM version of that image is available there.
+$ cat <<EOF > 'kustomization.yaml'
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: awx
+resources:
+  - github.com/ansible/awx-operator/config/default?ref=2.14.0
+    # https://github.com/ansible/awx-operator/releases
+images:
+  - name: quay.io/ansible/awx-operator
+    newTag: 2.14.0   # same as awx-operator in resources
+  - name: gcr.io/kubebuilder/kube-rbac-proxy
+    # no ARM version upstream, defaulting to quay.io
+    newName: quay.io/brancz/kube-rbac-proxy
+    newTag: v0.16.0-arm64
+EOF
+$ kubectl apply -k '.'
+namespace/awx created
+…
+deployment.apps/awx-operator-controller-manager created
+$ kubectl -n 'awx' get pods
+NAME                                              READY   STATUS    RESTARTS   AGE
+awx-operator-controller-manager-8b7dfcb58-k7jt8   2/2     Running   0          10m
+
+$ cat <<EOF > 'awx.yaml'
+---
+apiVersion: awx.ansible.com/v1beta1
+kind: AWX
+metadata:
+  name: awx-demo
+spec:
+  service_type: nodeport
+EOF
+$ yq -iy '.resources+=["awx.yaml"]' 'kustomization.yaml'
+$ kubectl apply -k '.'  # this failed because awx has no ARM images yet
+
+$ # Fine. I'll do it myself.
+$ git clone 'https://github.com/ansible/awx.git'
+$ cd 'awx'
+$ make awx-kube-build
+…
+ERROR: failed to solve: process "/bin/sh -c make sdist && /var/lib/awx/venv/awx/bin/pip install dist/awx.tar.gz" did not complete successfully: exit code: 2
+make: *** [awx-kube-build] Error 1
+$ # (ノಠ益ಠ)ノ彡┻━┻
 ```
 
+</details>
+
 ## Further readings
 
 - [Website]
@@ -53,6 +112,8 @@ $ minikube start --cpus=4 --memory=6g --addons=ingress
 - [AWX's repository]
 - [Operator's documentation]
 - [Operator's repository]
+- [Basic install]
+- [arm64 image pulled shows amd64 as its arch]
 
 <!--
   References
@@ -67,8 +128,10 @@ $ minikube start --cpus=4 --memory=6g --addons=ingress
 <!-- Upstream -->
 [awx's documentation]: https://ansible.readthedocs.io/projects/awx/en/latest/
 [awx's repository]: https://github.com/ansible/awx/
+[basic install]: https://ansible.readthedocs.io/projects/awx-operator/en/latest/installation/basic-install.html
 [operator's documentation]: https://ansible.readthedocs.io/projects/awx-operator/en/latest/
 [operator's repository]: https://github.com/ansible/awx-operator/
 [website]: https://www.ansible.com/awx/
 
 <!-- Others -->
+[arm64 image pulled shows amd64 as its arch]: https://github.com/brancz/kube-rbac-proxy/issues/79#issuecomment-826557647