create argocd apps declaratively

argocd/gen-apps.sh

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+#!/usr/bin/env bash
+# Generates ArgoCD Application manifests (one per app folder) + an AppProject.
+#
+# Layout produced:
+#   argocd/apps/project.yaml            -> AppProject "k3s-cluster" (sync-wave -1)
+#   argocd/apps/<app>.yaml              -> Application for that app folder
+#   argocd-bootstrap.yaml (repo root)   -> app-of-apps: syncs everything in argocd/apps/
+#
+# Bootstrap (one-time, after ArgoCD + cert-manager are installed):
+#   kubectl apply -f argocd-bootstrap.yaml
+#
+# Re-run this script after adding/removing an app folder to regenerate the manifests.
+set -euo pipefail
+
+cd "$(dirname "$0")/.."   # repo root
+
+REPO="${REPO:-https://git.rogi.casa/roger/k3s-cluster.git}"
+REV="${REV:-main}"
+APPS_DIR="argocd/apps"
+mkdir -p "$APPS_DIR"
+
+# app-name | namespace | path | recurse | validate
+APPS=(
+  "argocd|argocd|argocd|false|true"
+  "cert-manager|cert-manager|cert-manager|true|true"
+  "fava|fava|fava|true|true"
+  "gitea|gitea|gitea|true|true"
+  "glance|glance|glance|true|true"
+  "gym-tracker|gym-tracker|gym-tracker|true|true"
+  "homeassistant|home-assistant|homeassistant|true|true"
+  "jellyfin|jellyfin|jellyfin|true|true"
+  "litellm|litellm|litellm|true|true"
+  "minecraft-server|minecraft|minecraft-server|true|true"
+  "monitoring|monitoring|monitoring|true|true"
+  "myorg-assistant|myorg-assistant|myorg-assistant|true|true"
+  "n8n|n8n|n8n|true|true"
+  "nas|nas-proxy|nas|true|true"
+  "openwebui|openwebui|openwebui|true|true"
+  "phoenix|phoenix|phoenix|true|false"
+  "pihole|pihole|pihole|true|true"
+  "qbittorrent|qbittorrent|qbittorrent|true|true"
+  "vaultwarden|vaultwarden|vaultwarden|true|true"
+)
+
+# ---------------------------------------------------------------------------
+# AppProject
+# ---------------------------------------------------------------------------
+cat > "$APPS_DIR/project.yaml" <<EOF
+apiVersion: argoproj.io/v1alpha1
+kind: AppProject
+metadata:
+  name: k3s-cluster
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: "-1"
+spec:
+  description: Applications for the rogi.casa K3s cluster (managed in Git)
+  sourceRepos:
+    - ${REPO}
+  destinations:
+    - server: https://kubernetes.default.svc
+      namespace: "*"
+  clusterResourceWhitelist:
+    - group: "*"
+      kind: "*"
+EOF
+
+# ---------------------------------------------------------------------------
+# One Application per app folder
+# ---------------------------------------------------------------------------
+gen_app() {
+  local name="$1" ns="$2" path="$3" recurse="$4" validate="$5"
+  local recurse_yaml validate_opts=""
+  [ "$recurse" = "true" ] && recurse_yaml="      recurse: true" || recurse_yaml="      recurse: false"
+  [ "$validate" = "false" ] && validate_opts=$'\n      - Validate=false'
+
+  cat > "$APPS_DIR/${name}.yaml" <<EOF
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: ${name}
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: "0"
+spec:
+  project: k3s-cluster
+  source:
+    repoURL: ${REPO}
+    targetRevision: ${REV}
+    path: ${path}
+    directory:
+${recurse_yaml}
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: ${ns}
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=false${validate_opts}
+EOF
+}
+
+for line in "${APPS[@]}"; do
+  IFS='|' read -r name ns path recurse validate <<< "$line"
+  gen_app "$name" "$ns" "$path" "$recurse" "$validate"
+done
+
+# ---------------------------------------------------------------------------
+# Root "app-of-apps" bootstrap Application (uses the built-in default project)
+# ---------------------------------------------------------------------------
+cat > argocd-bootstrap.yaml <<EOF
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: k3s-cluster-root
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: "-1"
+spec:
+  project: default
+  source:
+    repoURL: ${REPO}
+    targetRevision: ${REV}
+    path: argocd/apps
+    directory:
+      recurse: true
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: argocd
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=false
+EOF
+
+echo "Generated $(find "$APPS_DIR" -name '*.yaml' | wc -l) files in $APPS_DIR/ and argocd-bootstrap.yaml"