preparing-iac-deployment

name	preparing-iac-deployment
description	Prepares IaC project deployment by analyzing the current project and generating K8s manifests, Dockerfiles, CI/CD workflows, Prometheus metrics, Grafana dashboards, Gitea mirror, webhooks, and secrets. Use for "배포 준비", "IaC 설정", "k8s 매니페스트", "deploy prep" requests.

IaC Deploy Prep

Full deployment pipeline setup: project analysis → Docker → K8s manifests → CI/CD → Gitea mirror → secrets → ArgoCD → monitoring.

IAC Repository

All infrastructure configs live in ~/workspace/iac/. This skill generates files both in the project repo and in the IAC repo.

Architecture

GitHub push → Gitea webhook → Mirror sync → Gitea Runner CI
→ Docker multi-arch build (amd64 + arm64) → registry.jiun.dev/{app}:{sha}
→ IaC repo kustomization.yaml tag update → ArgoCD sync

Two clusters:

• Prod (orbstack): arm64 — https://kubernetes.default.svc
• Dev (k3s 192.168.32.66): amd64 — registered as k3s-cluster in ArgoCD

Complete Checklist

□ Step 1: Analyze project
□ Step 2: Generate Dockerfile (multi-stage, Docker Hub base images)
□ Step 3: Generate K8s manifests (base + overlays)
□ Step 4: Register in bootstrap apps (dev + prod)
□ Step 5: Generate Gitea CI workflow
□ Step 6: Create Gitea mirror repo
□ Step 7: Set up GitHub webhook
□ Step 8: Configure Gitea repo secrets
□ Step 9: Create K8s secrets on both clusters
□ Step 10: Commit & push IaC repo
□ Step 11: Verify ArgoCD apps
□ Step 12: Setup monitoring (Prometheus + Grafana)

Generated Files

In Project Repo

Dockerfile
docker-compose.yml
.gitea/workflows/deploy.yaml

In IAC Repo (~/workspace/iac/)

kubernetes/base/apps/{app-name}/
├── namespace.yaml
├── deployment.yaml
├── service.yaml
├── service-metrics.yaml
├── configmap.yaml
├── pvc.yaml                        # If app needs persistent storage
├── secret.yaml.example             # Template (never commit real secrets)
└── kustomization.yaml

kubernetes/overlays/dev/{app-name}/
├── kustomization.yaml
└── configmap.yaml

kubernetes/overlays/prod/{app-name}/
├── kustomization.yaml
├── configmap.yaml
└── ingress.yaml

kubernetes/bootstrap/apps/dev/{app-name}.yaml    # ArgoCD Application (dev)
kubernetes/bootstrap/apps/prod/{app-name}.yaml   # ArgoCD Application (prod)

dashboards/grafonnet/services/{app-name}.jsonnet  # Grafana dashboard

Step-by-Step Guide

Step 1: Analyze Project

Detect:

• Language/framework (package.json, requirements.txt, Cargo.toml)
• Port configuration
• Environment variables needed
• Database dependencies
• LLM/AI SDK usage → triggers LLM metrics setup

Step 2: Generate Dockerfile

IMPORTANT: Use Docker Hub public images, NOT registry.jiun.dev/library/.... The internal registry may not mirror all base images.

# CORRECT — Docker Hub
FROM node:22-slim AS base

# WRONG — may not exist in internal registry
# FROM registry.jiun.dev/library/node:22-slim

Use multi-stage builds for smaller images.

Step 3: Generate K8s Manifests

Base (kubernetes/base/apps/{app-name}/)

kustomization.yaml:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization

resources:
  - namespace.yaml
  - configmap.yaml
  - pvc.yaml           # if needed
  - deployment.yaml
  - service.yaml

labels:
  - pairs:
      app.kubernetes.io/name: {app-name}
      app.kubernetes.io/managed-by: argocd
    includeSelectors: false

images:
  - name: registry.jiun.dev/{app-name}
    newTag: latest

deployment.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {app-name}
  namespace: {app-name}
spec:
  replicas: 1
  selector:
    matchLabels:
      app: {app-name}
  template:
    metadata:
      labels:
        app: {app-name}
    spec:
      imagePullSecrets:
        - name: registry-creds    # Pre-configured per namespace
      containers:
        - name: {app-name}
          image: registry.jiun.dev/{app-name}:latest
          imagePullPolicy: Always
          ports:
            - containerPort: {port}
          envFrom:
            - configMapRef:
                name: {app-name}-config
            - secretRef:
                name: {app-name}-secrets
          resources:
            requests:
              memory: "256Mi"
              cpu: "100m"
            limits:
              memory: "512Mi"
              cpu: "500m"
          livenessProbe:
            httpGet:
              path: /health
              port: {port}
            initialDelaySeconds: 5
            periodSeconds: 30
          readinessProbe:
            httpGet:
              path: /health
              port: {port}
            initialDelaySeconds: 3
            periodSeconds: 10

service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: {app-name}-service
  namespace: {app-name}
spec:
  selector:
    app: {app-name}
  ports:
    - protocol: TCP
      port: 80
      targetPort: {port}
  type: ClusterIP

ingress.yaml (prod overlay):

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: {app-name}-ingress
  namespace: {app-name}
  annotations:
    traefik.ingress.kubernetes.io/router.entrypoints: web,websecure
spec:
  ingressClassName: traefik
  rules:
    - host: {app-name}.jiun.dev
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: {app-name}-service
                port:
                  number: 80

Dev Overlay (kubernetes/overlays/dev/{app-name}/)

kustomization.yaml:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: {app-name}
resources:
  - ../../../base/apps/{app-name}
patches:
  - path: configmap.yaml
labels:
  - pairs:
      env: dev
    includeSelectors: false
images:
  - name: registry.jiun.dev/{app-name}
    newTag: latest

Prod Overlay (kubernetes/overlays/prod/{app-name}/)

kustomization.yaml:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: {app-name}
resources:
  - ../../../base/apps/{app-name}
  # Only include sealed-secrets if actually sealed (not placeholder)
  # - ../../../base/sealed-secrets/{app-name}
  - ingress.yaml
patches:
  - path: configmap.yaml
labels:
  - pairs:
      env: prod
    includeSelectors: false
images:
  - name: registry.jiun.dev/{app-name}
    newTag: latest

IMPORTANT: Do NOT include sealed-secrets resource until actual sealed secret is generated with kubeseal. Placeholder sealed-secrets cause ArgoCD Degraded status.

Step 4: Register in Bootstrap Apps

IMPORTANT: Both dev AND prod bootstrap kustomizations must be updated, AND the bootstrap apps must be synced for ArgoCD to pick up new apps.

kubernetes/bootstrap/apps/dev/{app-name}.yaml:

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: dev-{app-name}
  namespace: argocd
  finalizers:
    - resources-finalizer.argocd.argoproj.io
spec:
  project: default
  source:
    repoURL: https://github.com/jiunbae/IaC.git
    targetRevision: main
    path: kubernetes/overlays/dev/{app-name}
  destination:
    server: https://192.168.32.66:6443    # Dev cluster (amd64)
    namespace: {app-name}
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
      - CreateNamespace=true

kubernetes/bootstrap/apps/prod/{app-name}.yaml:

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: {app-name}
  namespace: argocd
spec:
  project: default
  source:
    repoURL: https://github.com/jiunbae/IaC.git
    targetRevision: main
    path: kubernetes/overlays/prod/{app-name}
  destination:
    server: https://kubernetes.default.svc   # Prod cluster (arm64)
    namespace: {app-name}
  syncPolicy:           # Prod: manual sync only
    syncOptions:
      - CreateNamespace=true
      - PruneLast=true

Add to both kustomization.yaml files:

# kubernetes/bootstrap/apps/dev/kustomization.yaml → add "- {app-name}.yaml"
# kubernetes/bootstrap/apps/prod/kustomization.yaml → add "- {app-name}.yaml"

After pushing IaC, if apps don't appear in ArgoCD:

# Force sync the bootstrap apps
kubectl patch application dev-apps -n argocd --type merge \
  -p '{"operation":{"initiatedBy":{"username":"admin"},"sync":{"revision":"HEAD","prune":true}}}'
kubectl patch application prod-apps -n argocd --type merge \
  -p '{"operation":{"initiatedBy":{"username":"admin"},"sync":{"revision":"HEAD","prune":true}}}'

Step 5: Generate Gitea CI Workflow

.gitea/workflows/deploy.yaml:

name: Build and Deploy

on:
  push:
    branches: [main]
    paths:
      - "src/**"
      - "packages/**"
      - "apps/**"
      - "Dockerfile"
      - "package.json"
      - "pnpm-lock.yaml"
      - ".gitea/workflows/**"

env:
  REGISTRY: registry.jiun.dev
  IMAGE_NAME: {app-name}
  IAC_REPO: jiunbae/IaC
  BASE_PATH: kubernetes/base/apps/{app-name}
  DEV_PATH: kubernetes/overlays/dev/{app-name}
  PROD_PATH: kubernetes/overlays/prod/{app-name}

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-qemu-action@v3
      - uses: docker/setup-buildx-action@v3
      - uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USERNAME }}
          password: ${{ secrets.REGISTRY_PASSWORD }}
      - uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64   # REQUIRED: both architectures
          push: true
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ gitea.sha }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache
          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache,mode=max

      - name: Update IaC repo image tag
        run: |
          git clone https://x-access-token:${{ secrets.IAC_GITHUB_TOKEN }}@github.com/${{ env.IAC_REPO }}.git iac
          cd iac
          sed -i "s/newTag: .*/newTag: ${{ gitea.sha }}/" ${{ env.BASE_PATH }}/kustomization.yaml
          sed -i "s/newTag: .*/newTag: ${{ gitea.sha }}/" ${{ env.DEV_PATH }}/kustomization.yaml
          sed -i "s/newTag: .*/newTag: ${{ gitea.sha }}/" ${{ env.PROD_PATH }}/kustomization.yaml

      - name: Commit and push IaC change
        run: |
          cd iac
          git config user.name "CI Bot"
          git config user.email "[e-mail]"
          git add ${{ env.BASE_PATH }}/kustomization.yaml ${{ env.DEV_PATH }}/kustomization.yaml ${{ env.PROD_PATH }}/kustomization.yaml
          git diff --staged --quiet || git commit -m "chore({app-name}): update image to ${{ gitea.sha }}"
          git push

CRITICAL: platforms: linux/amd64,linux/arm64 — Dev cluster is x86, Prod is ARM. Without multi-arch, one cluster will fail with exec format error.

Step 6: Create Gitea Mirror

Use vault-secrets skill to get Gitea API Token (claude-admin).

GITEA_TOKEN="<from vault>"
curl -X POST "https://gitea.jiun.dev/api/v1/repos/migrate" \
  -H "Authorization: token $GITEA_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "clone_addr": "https://github.com/jiunbae/{app-name}.git",
    "repo_name": "{app-name}",
    "repo_owner": "jiunbae",
    "service": "github",
    "mirror": true,
    "mirror_interval": "10m"
  }'

Step 7: Set Up GitHub Webhook

This ensures immediate sync on push (instead of waiting for mirror interval).

GH_TOKEN=$(gh auth token)
curl -X POST "https://api.github.com/repos/jiunbae/{app-name}/hooks" \
  -H "Authorization: token $GH_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "web",
    "active": true,
    "events": ["push"],
    "config": {
      "url": "https://gitea-webhook.jiun.dev",
      "content_type": "json",
      "insecure_ssl": "0"
    }
  }'

Step 8: Configure Gitea Repo Secrets

Three secrets needed. Use vault-secrets skill to get values:

Secret	Source in Vault
REGISTRY_USERNAME	Docker Registry (registry.jiun.dev) → username
REGISTRY_PASSWORD	Docker Registry (registry.jiun.dev) → password
IAC_GITHUB_TOKEN	gh auth token (GitHub PAT, NOT Gitea token)

CRITICAL: IAC_GITHUB_TOKEN must be a GitHub PAT, not a Gitea token. The CI pushes to the GitHub IaC repo, which requires GitHub authentication.

GITEA_TOKEN="<from vault>"
curl -X PUT "https://gitea.jiun.dev/api/v1/repos/jiunbae/{app-name}/actions/secrets/REGISTRY_USERNAME" \
  -H "Authorization: token $GITEA_TOKEN" -H "Content-Type: application/json" \
  -d '{"data":"admin"}'

curl -X PUT "https://gitea.jiun.dev/api/v1/repos/jiunbae/{app-name}/actions/secrets/REGISTRY_PASSWORD" \
  -H "Authorization: token $GITEA_TOKEN" -H "Content-Type: application/json" \
  -d '{"data":"<registry password>"}'

curl -X PUT "https://gitea.jiun.dev/api/v1/repos/jiunbae/{app-name}/actions/secrets/IAC_GITHUB_TOKEN" \
  -H "Authorization: token $GITEA_TOKEN" -H "Content-Type: application/json" \
  -d '{"data":"<gh auth token>"}'

Step 9: Create K8s Secrets on BOTH Clusters

Secrets are NOT managed by ArgoCD (not sealed). Create manually on each cluster.

Prod cluster (orbstack — arm64):

kubectl create namespace {app-name} 2>/dev/null

kubectl create secret generic {app-name}-secrets -n {app-name} \
  --from-literal=KEY1=value1 --from-literal=KEY2=value2 \
  --dry-run=client -o yaml | kubectl apply -f -

# Copy registry-creds from existing namespace
kubectl get secret registry-creds -n {existing-ns} -o yaml | \
  sed "s/namespace: .*/namespace: {app-name}/" | kubectl apply -f -

Dev cluster (k3s 192.168.32.66 — amd64):

ssh debian@192.168.32.66 "
  sudo kubectl create namespace {app-name} 2>/dev/null

  sudo kubectl create secret generic {app-name}-secrets -n {app-name} \
    --from-literal=KEY1=value1 --from-literal=KEY2=value2 \
    --dry-run=client -o yaml | sudo kubectl apply -f -

  # Copy registry-creds
  sudo kubectl get secret registry-creds -n claude-code-cloud-dev -o yaml | \
    sed 's/namespace: .*/namespace: {app-name}/' | sudo kubectl apply -f -
"

Step 10: Commit & Push IaC Repo

cd ~/workspace/iac
git add kubernetes/base/apps/{app-name}/ \
        kubernetes/overlays/dev/{app-name}/ \
        kubernetes/overlays/prod/{app-name}/ \
        kubernetes/bootstrap/apps/dev/{app-name}.yaml \
        kubernetes/bootstrap/apps/prod/{app-name}.yaml \
        kubernetes/bootstrap/apps/dev/kustomization.yaml \
        kubernetes/bootstrap/apps/prod/kustomization.yaml
git commit -m "feat({app-name}): add K8s deployment manifests for dev/prod"
git push origin main

Step 11: Verify ArgoCD Apps

# Wait for bootstrap sync, then check
kubectl get applications -n argocd | grep {app-name}

# If not visible, force sync bootstrap:
kubectl patch application prod-apps -n argocd --type merge \
  -p '{"operation":{"initiatedBy":{"username":"admin"},"sync":{"revision":"HEAD"}}}'

# Expected result:
# dev-{app-name}    Synced   Healthy
# {app-name}        Synced   Healthy   (after manual sync for prod)

Step 12: Setup Monitoring (Prometheus + Grafana)

12a. Add Prometheus metrics to the app

Node.js (prom-client):

import { Counter, Histogram, Gauge, Registry } from 'prom-client';
export const register = new Registry();

export const llmCallsTotal = new Counter({
  name: '{app}_llm_calls_total',
  help: 'Total LLM API calls',
  labelNames: ['model', 'provider', 'status'],
  registers: [register],
});

Expose /metrics endpoint in the app.

12b. Create K8s service-metrics NodePort

Check existing NodePorts to avoid conflicts:

• 30301: selectchatgpt
• 30302: tokka
• 30304: kongbu
• 30305: hanabi

12c. Add Prometheus scrape job + Grafana dashboard

See existing patterns in ~/workspace/iac/ansible/roles/prometheus/ and ~/workspace/iac/dashboards/.

Common Gotchas

1. Dockerfile Base Images

DO: Use Docker Hub public images (FROM node:22-slim) DON'T: Use internal registry for base images — they may not be mirrored

2. IAC_GITHUB_TOKEN

MUST be a GitHub PAT (from gh auth token), not a Gitea token. The CI clones the GitHub IaC repo to update image tags.

3. Sealed Secrets

DO NOT include placeholder sealed-secrets in kustomization.yaml. ArgoCD will show Degraded for invalid SealedSecret resources. Create secrets manually via kubectl until actual sealed secrets are generated.

4. Multi-Architecture

Dev (x86) and Prod (arm64) require platforms: linux/amd64,linux/arm64 in CI. Without this, pods will crash with exec format error on the wrong arch.

5. Bootstrap Sync

New apps don't appear in ArgoCD until the bootstrap app (dev-apps / prod-apps) syncs. Force sync if needed: kubectl patch application prod-apps -n argocd ...

6. Registry Credentials

registry-creds secret must exist in the app's namespace on BOTH clusters. Copy from an existing namespace (e.g., claude-code-cloud for prod, claude-code-cloud-dev for dev).

7. Dev Cluster SSH Access

Dev cluster (192.168.32.66) requires SSH as debian user with sudo kubectl.

8. Cloudflare Tunnel Route Persistence

Tunnel routes can be silently dropped when other services update the tunnel config. The Cloudflare tunnel API replaces the ENTIRE ingress config on each PUT — if another service's deployment script doesn't include your app's route, it gets removed.

After deploying a new app to the tunnel:

• Verify the route exists: check tunnel config via API
• Add a health check: curl -s https://{app}.jiun.dev/health
• If 404: re-add the route to the tunnel config

Prevention:

• Always GET current config → add new route → PUT back (never build config from scratch)
• After ANY tunnel config change, verify ALL app routes still exist
• Consider adding a monitoring check for tunnel routes

Re-adding a dropped route:

# Get current config
CURRENT=$(curl -s "https://api.cloudflare.com/client/v4/accounts/$CF_ACCOUNT/cfd_tunnel/$TUNNEL_ID/configurations" \
  -H "Authorization: Bearer $CF_TOKEN")

# Add missing route and PUT back
echo "$CURRENT" | python3 -c "
import json, sys
data = json.load(sys.stdin)
config = data['result']['config']
config['ingress'].insert(-1, {'hostname': '{app}.jiun.dev', 'service': 'http://traefik.kube-system.svc.cluster.local:80'})
print(json.dumps({'config': config}))
" | curl -s -X PUT "https://api.cloudflare.com/client/v4/accounts/$CF_ACCOUNT/cfd_tunnel/$TUNNEL_ID/configurations" \
  -H "Authorization: Bearer $CF_TOKEN" -H "Content-Type: application/json" -d @-

9. CI Path Filters

CI workflow uses paths: filter — only triggers on changes to packages/**, apps/**, Dockerfile, etc. Changes to tools/**, docs/**, or other non-build directories will NOT trigger CI. This is intentional — those files are not included in the Docker image. If you need to force a rebuild, touch a tracked path:

echo "# trigger" >> .gitea/workflows/deploy.yaml && git add -A && git commit -m "ci: trigger rebuild" && git push

Language Detection

File	Framework	Base Image	Metrics Library
package.json	Node.js	node:22-slim	prom-client
requirements.txt	Python	python:3.11-slim	prometheus_client
Cargo.toml	Rust	rust:1.75-alpine	prometheus
go.mod	Go	golang:1.21-alpine	prometheus/client_golang