[KO] Latest labs fixtures

Small various bits after latest review.

Author: rascasoft

Platforming-Kubernetes-With-Operators/Kubernetes-Operators-Helm.md

@@ -137,8 +137,9 @@ NAME        TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)          AGE
 mariadb-0   LoadBalancer   10.96.129.190   192.168.99.222   3306:32128/TCP   28s
 ```
 
-The service is exposed and accessible, by installing the mariadb package (`yum
--y install mariadb`) and then invoke:
+The service is exposed and accessible, by installing the mariadb package (`sudo
+yum -y install mariadb` for Red Hat based systems and `sudo apt install -y
+mariadb` for Debian based systems) and then invoke:
 
 ```console
 $ mysql -h 192.168.99.222 -u root -pmariadb

Platforming-Kubernetes-With-Operators/Kubernetes-Operators-MetalLB-Operator.md

@@ -12,9 +12,7 @@ configuration of the `KubeProxyConfiguration` resource needs to have the
 This is a one command operation:
 
 ```console
-$ kubectl get configmap kube-proxy -n kube-system -o yaml | \
-sed -e "s/strictARP: false/strictARP: true/" | \
-kubectl apply -f - -n kube-system
+$ kubectl get configmap kube-proxy -n kube-system -o yaml | sed -e "s/strictARP: false/strictARP: true/" | kubectl apply -f - -n kube-system
 configmap/kube-proxy configured
 ```
 

Platforming-Kubernetes-With-Operators/Kubernetes-Operators-OLM-Operators.md

@@ -144,7 +144,6 @@ spec:
   source: operatorhubio-catalog
   sourceNamespace: olm
   installPlanApproval: Manual
-  #startingCSV: trivy-operator.v0.22.0
   startingCSV: trivy-operator.v0.17.1
   config:
     env:

Platforming-Kubernetes-With-Operators/Kubernetes-Operators-SDK-Install.md

@@ -38,13 +38,22 @@ operator-sdk version: "v1.32.0", commit: "...", kubernetes version: "1.26.0", go
 ## Filling all the prerequisites
 
 To automate some of the processes around the Operators installation the `make`
-command will be more than useful, so it needs to be installed:
+command will be more than useful, so it needs to be installed.
+
+If you use a Red Hat based system:
 
 ```bash
 $ sudo yum -y install make
 ...
 ```
 
+If you use a Debian based system:
+
+```bash
+$ sudo apt -y install make
+...
+```
+
 The test operator that will be implemented will use Ansible, and so there are
 some [additional packages](https://sdk.operatorframework.io/docs/building-operators/ansible/installation/)
 to install to fully cover the requirements, like `docker` and `python` which

Platforming-Kubernetes-With-Operators/Kubernetes-Operators-SDK-Package.md

@@ -160,8 +160,6 @@ And change the deployment to mount the configmap:
             containers:
               - name: akit
                 image: "{{ akit_container }}"
-                ports:
-                  - containerPort: 80
                 volumeMounts:
                 - name: docroot
                   mountPath: /usr/share/nginx/html
@@ -202,6 +200,7 @@ $ bin/kustomize build config/manifests --output v0.0.2.yaml
 And commit everything as before:
 
 ```console$ git status
+$ git status
 On branch main
 Changes not staged for commit:
   (use "git add <file>..." to update what will be committed)

Platforming-Kubernetes-With-Operators/Kubernetes-Operators-Trivy-Operator.md

@@ -237,67 +237,11 @@ al with resource contention.
 Events:              <none>
 ```
 
-## Activate useful utilities with kubectl
+## Final checks
 
-- Install krew (note the `git` package is a requirement):
-
-```console
-$ curl -LO https://github.com/kubernetes-sigs/krew/releases/download/v0.4.4/krew-linux_amd64.tar.gz
-...
-
-$ tar -xzvf krew-linux_amd64.tar.gz
-...
-
-$ sudo mv krew-linux_amd64 /usr/local/bin/krew
-
-$ krew install krew
-Adding "default" plugin index from https://github.com/kubernetes-sigs/krew-index.git.
-Updated the local copy of plugin index.
-Installing plugin: krew
-Installed plugin: krew
-\
- | Use this plugin:
- |     kubectl krew
- | Documentation:
- |     https://krew.sigs.k8s.io/
- | Caveats:
- | \
- |  | krew is now installed! To start using kubectl plugins, you need to add
- |  | krew's installation directory to your PATH:
- |  |
- |  |   * macOS/Linux:
- |  |     - Add the following to your ~/.bashrc or ~/.zshrc:
- |  |         export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
- |  |     - Restart your shell.
- |  |
- |  |   * Windows: Add %USERPROFILE%\.krew\bin to your PATH environment variable
- |  |
- |  | To list krew commands and to get help, run:
- |  |   $ kubectl krew
- |  | For a full list of available plugins, run:
- |  |   $ kubectl krew search
- |  |
- |  | You can find documentation at
- |  |   https://krew.sigs.k8s.io/docs/user-guide/quickstart/.
- | /
-/
-
-$ echo 'export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"' >> .bash_profile
-
-$ export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
-```
-
-Install `who-can` and `tree` kubectl plugins:
-
-```console
-$ kubectl krew install who-can
-...
-
-$ kubectl krew install tree
-...
-```
-
-List who can list `vulnerabilityreports`:
+As a last check, use the `kubectl` plugins installed following
+[Lab | Kubernetes kubectl improvements](https://github.com/mmul-it/training/blob/master/Common/Kubernetes-Kubectl-Improvements.md).
+it is possible to list who can list `vulnerabilityreports`:
 
 ```console
 $ kubectl who-can list vulnerabilityreports
@@ -313,7 +257,7 @@ system:kube-controller-manager               system:kube-controller-manager  Use
 trivy-operator                               trivy-operator                  ServiceAccount  trivy-system
 ```
 
-Display the tree view of the `trivy-operator` deployment:
+And display the tree view of the `trivy-operator` deployment:
 
 ```console
 $ kubectl tree -n trivy-system deployment trivy-operator