Feature/Initialize the solution

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

.github/CODEOWNERS

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+# sets global approvers
+*   @devpro @hierynomus

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - develop
+  schedule:
+    - cron: "0 2 * * 1-5"
+  workflow_dispatch: {}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checks-out the repository
+        uses: actions/checkout@v4
+      - name: Lints Markdown files
+        uses: DavidAnson/markdownlint-cli2-action@v16
+        with:
+          globs: '**/*.md'

.markdownlint.yml

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+# ref. https://github.com/DavidAnson/markdownlint
+default: true
+MD013:          # Line length
+  line_length: 240

README.md

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-# lab-setup
+# Lab Setup
+
+[![CI](https://github.com/SUSE/lab-setup/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/SUSE/lab-setup/actions/workflows/ci.yml)
+
+Welcome! You'll find in this repository some IT material to help setup your lab environments.
+
+It is used internally at SUSE (the goal being to capitalize and factorize), but is open to everyone. Feel free to contribute and share feedback!
+
+## Getting started
+
+### Shell scripting
+
+* Download and source the files (here targetting `develop` branch but you can chose the revision you want):
+
+```bash
+SETUP_FOLDER=lab-setup
+curl -sfL https://raw.githubusercontent.com/SUSE/lab-setup/feature/init-solution/scripts/download.sh \
+  | GIT_REVISION=refs/heads/develop sh -s -- -o $SETUP_FOLDER
+. $SETUP_FOLDER/scripts/index.sh
+```
+
+* Call a function:
+
+```bash
+# create a Kubernetes cluster (K3s distribution)
+k3s_create_cluster v1.23
+```
+
+* Look at a concrete sample:
+
+  * [samples/scripting/rancher_installation.sh](samples/scripting/rancher_installation.sh)
+
+* Browse the available functions:
+
+Name                                           | Source
+-----------------------------------------------|---------------------------------------------------------------------------------------------
+`k3s_create_cluster`                           | [scripts/k3s/cluster-lifecycle.sh](scripts/k3s/cluster-lifecycle.sh)
+`k3s_copy_kubeconfig`                          | [scripts/k3s/cluster-lifecycle.sh](scripts/k3s/cluster-lifecycle.sh)
+`k8s_install_certmanager`                      | [scripts/kubernetes/certificate-management.sh](scripts/kubernetes/certificate-management.sh)
+`k8s_create_letsencryptclusterissuer`          | [scripts/kubernetes/certificate-management.sh](scripts/kubernetes/certificate-management.sh)
+`k8s_wait_fornodesandpods`                     | [scripts/kubernetes/cluster-status.sh](scripts/kubernetes/cluster-status.sh)
+`rancher_list_clusters`                        | [scripts/rancher/cluster-actions.sh](scripts/rancher/cluster-actions.sh)
+`rancher_create_customcluster`                 | [scripts/rancher/cluster-actions.sh](scripts/rancher/cluster-actions.sh)
+`rancher_get_clusterid`                        | [scripts/rancher/cluster-actions.sh](scripts/rancher/cluster-actions.sh)
+`rancher_get_clusterregistrationcommand`       | [scripts/rancher/cluster-actions.sh](scripts/rancher/cluster-actions.sh)
+`rancher_install_withcertmanagerclusterissuer` | [scripts/rancher/manager-lifecycle.sh](scripts/rancher/manager-lifecycle.sh)
+`rancher_first_login`                          | [scripts/rancher/manager-lifecycle.sh](scripts/rancher/manager-lifecycle.sh)
+`rancher_wait_capiready`                       | [scripts/rancher/manager-lifecycle.sh](scripts/rancher/manager-lifecycle.sh)
+`rancher_update_serverurl`                     | [scripts/rancher/manager-settings.sh](scripts/rancher/manager-settings.sh)
+`rancher_login_withpassword`                   | [scripts/rancher/user-actions.sh](scripts/rancher/user-actions.sh)
+`rancher_update_password`                      | [scripts/rancher/user-actions.sh](scripts/rancher/user-actions.sh)
+`rancher_create_apikey`                        | [scripts/rancher/user-actions.sh](scripts/rancher/user-actions.sh)

samples/scripting/rancher_installation.sh

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+#!/bin/bash
+
+# downloads and sources shared scripts
+SETUP_FOLDER=temp
+curl -sfL https://raw.githubusercontent.com/SUSE/lab-setup/feature/init-solution/scripts/download.sh \
+  | GIT_REVISION=refs/heads/feature/init-solution sh -s -- -o $SETUP_FOLDER
+. $SETUP_FOLDER/scripts/index.sh
+
+# defines variables
+K3S_VERSION='v1.23'
+CERTMANAGER_VERSION='v1.11.0'
+LETSENCRYPT_EMAIL_ADDRESS='[email protected]'
+RANCHER_REPOSITORY='latest'
+RANCHER_VERSION='2.8.2'
+RANCHER_DOMAIN="rancher.${HOSTNAME}.${_SANDBOX_ID}.instruqt.io"
+RANCHER_REPLICAS='1'
+ADMIN_PASSWORD='Sus3R@ncherR0x'
+INGRESS_CLASSNAME='traefik'
+DOWNSTREAM_CLUSTER_NAME='demo'
+RKE2_K8S_VERSION='v1.27.16+rke2r1'
+
+# create management cluster
+k3s_create_cluster $K3S_VERSION
+k3s_copy_kubeconfig
+k8s_wait_fornodesandpods
+kubectl get nodes
+kubectl get pods -A
+k8s_install_certmanager $CERTMANAGER_VERSION
+k8s_create_letsencryptclusterissuer $INGRESS_CLASSNAME $LETSENCRYPT_EMAIL_ADDRESS
+kubectl get clusterissuers
+
+# install and initialize Rancher
+rancher_install_withcertmanagerclusterissuer $RANCHER_REPOSITORY $RANCHER_VERSION $RANCHER_REPLICAS $RANCHER_DOMAIN letsencrypt-prod
+RANCHER_URL="https://${RANCHER_DOMAIN}"
+rancher_first_login $RANCHER_URL $ADMIN_PASSWORD
+rancher_create_apikey $RANCHER_URL $LOGIN_TOKEN 'Automation API Key'
+echo "DEBUG API_TOKEN=${API_TOKEN}"
+rancher_list_clusters $RANCHER_URL $API_TOKEN
+rancher_wait_capiready
+
+# creates downstream cluster
+rancher_create_customcluster $RANCHER_URL $API_TOKEN $DOWNSTREAM_CLUSTER_NAME $RKE2_K8S_VERSION
+rancher_get_clusterregistrationcommand $RANCHER_URL $API_TOKEN $CLUSTER_ID
+
+# executes the registration from downstream server
+echo "Registering downstream cluster (RKE2)..."
+ssh -o StrictHostKeyChecking=accept-new downstream1 "${REGISTRATION_COMMAND} --etcd --controlplane --worker"

scripts/download.sh

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+#!/bin/sh
+
+# Usage:
+#   curl ... | ENV_VAR=... sh -
+#       or
+#   ENV_VAR=... ./setup.sh
+#
+# Examples:
+#   Downloading scripts from a "develop" branch in a temp local folder "temp":
+#     curl -sfL https://raw.githubusercontent.com/SUSE/lab-setup/feature/init-solution/scripts/setup.sh | GIT_REVISION=refs/heads/develop sh -s -- -o temp
+#   Downloading scripts from a specific revision "d8b7564fbf91473074e86b598ae06c7e4e522b9f" in the default local folder:
+#     curl -sfL https://raw.githubusercontent.com/SUSE/lab-setup/feature/init-solution/scripts/setup.sh | GIT_REVISION=d8b7564fbf91473074e86b598ae06c7e4e522b9f sh -
+#   Testing locally the setup script:
+#     GIT_REVISION=refs/heads/feature/init-solution ./lab-setup/scripts/setup.sh -o temp
+#
+# Environment variables:
+#   - GIT_REVISION
+#     Git revision (refs/heads/<branch-name>, refs/tags/vX.Y.Z for a tag, xxxxxxxxxxxxxxxx for a commit hashcode)
+#   - OUTPUT_FOLDER
+#     Output folder, where the scripts folder will be created with script directory tree inside, overriden if -o is used
+
+info() {
+  echo '[INFO] ' "$@"
+}
+
+warn() {
+  echo '[WARN] ' "$@" >&2
+}
+
+fatal() {
+  echo '[ERROR] ' "$@" >&2
+  exit 1
+}
+
+verify_system() {
+  info 'Verify system requirements'
+  if [ -x /usr/bin/git ] || type git > /dev/null 2>&1; then
+      return
+  fi
+  fatal 'Git is not installed in the machine'
+}
+
+setup_env() {
+  info 'Setup variables'
+  case "$1" in
+      ("-o")
+          OUTPUT_FOLDER=$2
+          shift
+          shift
+      ;;
+      (*)
+          OUTPUT_FOLDER=${OUTPUT_FOLDER:-'lab-setup'}
+      ;;
+  esac
+
+  GIT_REVISION=${GIT_REVISION:-'refs/heads/develop'}
+  GIT_REPO_NAME='lab-setup'
+  GIT_FOLDER=$(echo "$GIT_REVISION" | sed 's/\//-/g' | sed 's/refs-//' | sed 's/heads-//')
+}
+
+download() {
+  info 'Download scripts'
+  wget https://github.com/SUSE/${GIT_REPO_NAME}/archive/${GIT_REVISION}.zip -O ${GIT_REPO_NAME}.zip
+  unzip -o ${GIT_REPO_NAME}.zip
+  mkdir -p ${OUTPUT_FOLDER}
+  if [ -d ${OUTPUT_FOLDER}/scripts ]; then
+    info "Delete ${OUTPUT_FOLDER}/scripts"
+    rm -rf ${OUTPUT_FOLDER}/scripts
+  fi
+  mv ${GIT_REPO_NAME}-${GIT_FOLDER}/scripts ${OUTPUT_FOLDER}
+}
+
+cleanup() {
+  info 'Clean-up'
+  rm -f ${GIT_REPO_NAME}.zip
+  rm -rf ${GIT_REPO_NAME}-${GIT_FOLDER}
+}
+
+{
+  verify_system
+  setup_env "$@"
+  download
+  cleanup
+}

scripts/index.sh

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+SCRIPT_FOLDER=$(dirname "${BASH_SOURCE[0]}")
+for file in ${SCRIPT_FOLDER}/*/*.sh
+do {
+  echo "Sourcing ${file}"
+  . $file
+}
+done

scripts/k3s/cluster-lifecycle.sh

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+# Collection of functions to manage K3s cluster lifecycle
+
+#######################################
+# Create a K3s cluster
+# Arguments:
+#   K3s version
+# Examples:
+#   k3s_create_cluster "v1.23"
+#######################################
+k3s_create_cluster() {
+  local version=$1
+
+  echo "Create management cluster (K3s)..."
+  curl -sfL https://get.k3s.io | INSTALL_K3S_CHANNEL="${version}" K3S_KUBECONFIG_MODE="644" sh -
+}
+
+#######################################
+# Copy K3s kubeconfig file to local user file
+# Arguments:
+#   None
+# Examples:
+#   k3s_copy_kubeconfig
+#######################################
+k3s_copy_kubeconfig() {
+  mkdir -p ~/.kube
+  cp /etc/rancher/k3s/k3s.yaml ~/.kube/config
+  chmod 600 ~/.kube/config
+}

scripts/kubernetes/certificate-management.sh

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+# Collection of functions to add components to manage certificates in a Kubernetes cluster
+
+#######################################
+# Install cert-manager and wait for the the application to be running
+# Arguments:
+#   cert-manager version
+# Examples:
+#   k8s_install_certmanager "v1.11.0"
+#######################################
+k8s_install_certmanager() {
+  local version=$1
+
+  echo "Installing cert-manager..."
+  helm repo add jetstack https://charts.jetstack.io
+  helm repo update
+  kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/${version}/cert-manager.crds.yaml
+  helm upgrade --install cert-manager jetstack/cert-manager \
+    --namespace cert-manager --create-namespace \
+    --version ${version} \
+    2>/dev/null
+  kubectl wait pods -n cert-manager -l app.kubernetes.io/instance=cert-manager --for condition=Ready 2>/dev/null
+}
+
+#######################################
+# Create certificate cluster issuers using Let's Encrypt
+# Arguments:
+#   Ingress class name (traefik, nginx, etc.)
+#   administrator email address (to receive notifications for Let's Encrypt)
+# Examples:
+#   k8s_create_letsencryptclusterissuer traefik [email protected]
+#######################################
+k8s_create_letsencryptclusterissuer() {
+  local ingressClassname=$1
+  local emailAddress=$2
+
+  echo "Creating certificate issuers using Let's Encrypt..."
+  helm repo add devpro https://devpro.github.io/helm-charts
+  helm repo update
+  helm upgrade --install letsencrypt devpro/letsencrypt --namespace cert-manager \
+    --set ingress.className=${ingressClassname} \
+    --set registration.emailAddress=${emailAddress} \
+    2>/dev/null
+  while [ "$(kubectl get clusterissuers -o json | jq '.items != null')" != "true" ]; do
+    echo "Waiting for ClusterIssuers to be available..."
+    sleep 5
+  done
+  while kubectl get clusterissuers -o json | jq -e '.items[] | select(.status.conditions[] | select(.type == "Ready" and .status != "True"))' > /dev/null; do
+    sleep 1
+  done
+}

scripts/kubernetes/cluster-status.sh

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+# Collection of functions to add query status on a Kubernetes cluster
+
+#######################################
+# Wait for the Kubernetes cluster to be available (checking nodes and pods)
+# Arguments:
+#   None
+# Examples:
+#   k8s_wait_fornodesandpods
+#######################################
+k8s_wait_fornodesandpods() {
+  # checks nodes are ready
+  while ! kubectl get nodes --no-headers 2>/dev/null | grep -q .; do
+    echo "Waiting for nodes to be available..."
+    sleep 5
+  done
+  while true; do
+    NOT_READY_NODES=$(kubectl get nodes --no-headers 2>/dev/null | grep -v " Ready" | wc -l)
+    if [ "$NOT_READY_NODES" -eq 0 ]; then
+      echo "All nodes are ready."
+      break
+    else
+      sleep 5
+    fi
+  done
+
+  # checks pods are completed or running
+  while ! kubectl get pods --all-namespaces --no-headers 2>/dev/null | grep -q .; do
+    echo "Waiting for pods to be available..."
+    sleep 5
+  done
+  while true; do
+    NOT_READY_PODS=$(kubectl get pods --all-namespaces --field-selector=status.phase!=Running,status.phase!=Succeeded --no-headers 2>/dev/null | wc -l)
+    if [ "$NOT_READY_PODS" -eq 0 ]; then
+      echo "All pods are in Running or Completed status."
+      break
+    else
+      sleep 5
+    fi
+  done
+}