|
| 1 | +# Root Cause Analysis: ArgoCD Deployment Failure (2-broken-apps) |
| 2 | + |
| 3 | +**Investigation Date:** 2026-02-03 |
| 4 | +**Application:** `2-broken-apps` |
| 5 | +**Status:** Degraded / OutOfSync |
| 6 | +**Related Issue:** #12 |
| 7 | + |
| 8 | +## 🔍 Root Cause Analysis |
| 9 | + |
| 10 | +I've investigated the ArgoCD deployment failure for the `2-broken-apps` application and identified **two critical issues** in the source repository's Kubernetes manifest file. |
| 11 | + |
| 12 | +### Issue 1: Invalid apiVersion ❌ |
| 13 | + |
| 14 | +**Location:** Line 178 in `apps/broken-aks-store-all-in-one.yaml` from repository `https://github.com/dcasati/argocd-notification-examples.git` |
| 15 | + |
| 16 | +```yaml |
| 17 | +apiVersion: apps/v |
| 18 | +kind: Deployment |
| 19 | +metadata: |
| 20 | + name: order-service |
| 21 | +``` |
| 22 | +
|
| 23 | +**Problem:** The `apiVersion` field is incomplete. It should be `apps/v1` but is only `apps/v`. |
| 24 | + |
| 25 | +**Impact:** This causes ArgoCD sync to fail because Kubernetes cannot recognize this as a valid resource definition. The error message "one or more synchronization tasks are not valid" is a direct result of this malformed apiVersion. |
| 26 | + |
| 27 | +--- |
| 28 | + |
| 29 | +### Issue 2: Incorrect Container Image Name ❌ |
| 30 | + |
| 31 | +**Location:** Line 475 in `apps/broken-aks-store-all-in-one.yaml` |
| 32 | + |
| 33 | +```yaml |
| 34 | +containers: |
| 35 | + - name: store-admin |
| 36 | + image: ghcr.io/azure-samples/aks-store-demo/store-dmin:2.1.0 |
| 37 | +``` |
| 38 | + |
| 39 | +**Problem:** The image name has a typo: `store-dmin` should be `store-admin`. |
| 40 | + |
| 41 | +**Impact:** Even if the manifest syncs successfully after fixing Issue 1, this pod will fail to start because the image `store-dmin:2.1.0` doesn't exist in the container registry. Only `store-admin:2.1.0` exists. |
| 42 | + |
| 43 | +--- |
| 44 | + |
| 45 | +## 🔧 Remediation Recommendations |
| 46 | + |
| 47 | +### Option 1: Fix the Source Repository (Recommended) ⭐ |
| 48 | + |
| 49 | +Since the application is pointing to an external repository (`https://github.com/dcasati/argocd-notification-examples.git`), the best solution is to fix the issues at the source: |
| 50 | + |
| 51 | +1. **Contact the repository owner** (@dcasati) or submit a pull request to fix: |
| 52 | + - **Line 178:** Change `apiVersion: apps/v` to `apiVersion: apps/v1` |
| 53 | + - **Line 475:** Change `ghcr.io/azure-samples/aks-store-demo/store-dmin:2.1.0` to `ghcr.io/azure-samples/aks-store-demo/store-admin:2.1.0` |
| 54 | + |
| 55 | +2. **Wait for ArgoCD auto-sync** (configured with `automated: true`) or manually trigger sync: |
| 56 | + ```bash |
| 57 | + argocd app sync 2-broken-apps |
| 58 | + ``` |
| 59 | + |
| 60 | +3. **Verify the deployment** using the verification steps below. |
| 61 | + |
| 62 | +**Advantages:** |
| 63 | +- Fixes the root cause |
| 64 | +- Maintains GitOps principles |
| 65 | +- Benefits other users of the repository |
| 66 | + |
| 67 | +--- |
| 68 | + |
| 69 | +### Option 2: Fork and Fix 🍴 |
| 70 | + |
| 71 | +If you need immediate resolution and cannot wait for the upstream fix: |
| 72 | + |
| 73 | +1. **Fork the repository** to your own GitHub account or organization: |
| 74 | + ```bash |
| 75 | + # Via GitHub UI or: |
| 76 | + gh repo fork dcasati/argocd-notification-examples --clone=false |
| 77 | + ``` |
| 78 | + |
| 79 | +2. **Clone your fork and fix the issues:** |
| 80 | + ```bash |
| 81 | + git clone https://github.com/YOUR-ORG/argocd-notification-examples.git |
| 82 | + cd argocd-notification-examples |
| 83 | + |
| 84 | + # Fix Issue 1 |
| 85 | + sed -i 's/apiVersion: apps\/v$/apiVersion: apps\/v1/' apps/broken-aks-store-all-in-one.yaml |
| 86 | + |
| 87 | + # Fix Issue 2 |
| 88 | + sed -i 's/store-dmin:2.1.0/store-admin:2.1.0/' apps/broken-aks-store-all-in-one.yaml |
| 89 | + |
| 90 | + git commit -am "Fix apiVersion and image name typos" |
| 91 | + git push |
| 92 | + ``` |
| 93 | + |
| 94 | +3. **Update the ArgoCD Application** spec in `Act-3/argocd-test-app.yaml`: |
| 95 | + ```yaml |
| 96 | + spec: |
| 97 | + source: |
| 98 | + repoURL: https://github.com/YOUR-ORG/argocd-notification-examples.git |
| 99 | + targetRevision: main |
| 100 | + path: apps |
| 101 | + ``` |
| 102 | + |
| 103 | +4. **Apply the updated ArgoCD Application:** |
| 104 | + ```bash |
| 105 | + kubectl apply -f Act-3/argocd-test-app.yaml |
| 106 | + ``` |
| 107 | + |
| 108 | +**Advantages:** |
| 109 | +- Immediate resolution |
| 110 | +- Full control over the manifests |
| 111 | +- Can be used until upstream is fixed |
| 112 | + |
| 113 | +--- |
| 114 | + |
| 115 | +### Option 3: Local Patch (Not Recommended) ⚠️ |
| 116 | + |
| 117 | +Apply the resources with corrections directly to the cluster: |
| 118 | + |
| 119 | +```bash |
| 120 | +# Download and fix the manifest |
| 121 | +curl -o /tmp/fixed-app.yaml https://raw.githubusercontent.com/dcasati/argocd-notification-examples/main/apps/broken-aks-store-all-in-one.yaml |
| 122 | +
|
| 123 | +# Edit /tmp/fixed-app.yaml to fix both issues, then apply: |
| 124 | +kubectl apply -f /tmp/fixed-app.yaml -n default |
| 125 | +``` |
| 126 | + |
| 127 | +**Disadvantages:** |
| 128 | +- Creates drift from GitOps source |
| 129 | +- ArgoCD will constantly try to sync back to the broken state |
| 130 | +- Not a sustainable solution |
| 131 | + |
| 132 | +--- |
| 133 | + |
| 134 | +## ✅ Verification Steps |
| 135 | + |
| 136 | +After applying the fix (via Option 1 or 2): |
| 137 | + |
| 138 | +### 1. Check ArgoCD Application Status |
| 139 | + |
| 140 | +```bash |
| 141 | +# Check overall application health |
| 142 | +argocd app get 2-broken-apps |
| 143 | +
|
| 144 | +# Expected output should show: |
| 145 | +# - Health Status: Healthy |
| 146 | +# - Sync Status: Synced |
| 147 | +``` |
| 148 | + |
| 149 | +### 2. Verify All Pods Are Running |
| 150 | + |
| 151 | +```bash |
| 152 | +# Check all pods in the namespace |
| 153 | +kubectl get pods -n default |
| 154 | +
|
| 155 | +# Check specific deployments |
| 156 | +kubectl get deployment order-service -n default |
| 157 | +kubectl get deployment store-admin -n default |
| 158 | +
|
| 159 | +# Expected: All deployments should show READY 1/1 |
| 160 | +``` |
| 161 | + |
| 162 | +### 3. Verify Deployments in Detail |
| 163 | + |
| 164 | +```bash |
| 165 | +# Check order-service deployment |
| 166 | +kubectl describe deployment order-service -n default |
| 167 | +
|
| 168 | +# Check store-admin deployment |
| 169 | +kubectl describe deployment store-admin -n default |
| 170 | +
|
| 171 | +# Verify the image name is correct |
| 172 | +kubectl get deployment store-admin -n default -o jsonpath='{.spec.template.spec.containers[0].image}' |
| 173 | +# Expected: ghcr.io/azure-samples/aks-store-demo/store-admin:2.1.0 |
| 174 | +``` |
| 175 | + |
| 176 | +### 4. Check Pod Logs (if issues persist) |
| 177 | + |
| 178 | +```bash |
| 179 | +# Check order-service logs |
| 180 | +kubectl logs deployment/order-service -n default --tail=50 |
| 181 | +
|
| 182 | +# Check store-admin logs |
| 183 | +kubectl logs deployment/store-admin -n default --tail=50 |
| 184 | +``` |
| 185 | + |
| 186 | +### 5. Monitor ArgoCD Sync |
| 187 | + |
| 188 | +```bash |
| 189 | +# Watch the sync progress |
| 190 | +argocd app sync 2-broken-apps --watch |
| 191 | +
|
| 192 | +# Check recent sync history |
| 193 | +argocd app history 2-broken-apps |
| 194 | +``` |
| 195 | + |
| 196 | +--- |
| 197 | + |
| 198 | +## 📋 Summary |
| 199 | + |
| 200 | +The deployment failure is caused by **two distinct issues** in the external repository's manifest file: |
| 201 | + |
| 202 | +| Issue | Location | Current Value | Expected Value | |
| 203 | +|-------|----------|---------------|----------------| |
| 204 | +| **Invalid apiVersion** | Line 178 | `apiVersion: apps/v` | `apiVersion: apps/v1` | |
| 205 | +| **Typo in Image Name** | Line 475 | `store-dmin:2.1.0` | `store-admin:2.1.0` | |
| 206 | + |
| 207 | +### Recommended Action |
| 208 | + |
| 209 | +**Primary:** Contact the repository owner (@dcasati) or submit a PR to https://github.com/dcasati/argocd-notification-examples.git fixing both issues, then re-sync the ArgoCD application. |
| 210 | + |
| 211 | +**Alternative:** Fork the repository, fix the issues, and update your ArgoCD application to point to your fork for immediate resolution. |
| 212 | + |
| 213 | +--- |
| 214 | + |
| 215 | +## 🔗 References |
| 216 | + |
| 217 | +- **Source Repository:** https://github.com/dcasati/argocd-notification-examples.git |
| 218 | +- **Problematic File:** `apps/broken-aks-store-all-in-one.yaml` |
| 219 | +- **ArgoCD Application Config:** `Act-3/argocd-test-app.yaml` |
| 220 | +- **Related Issue:** #12 |
| 221 | +- **Application Name:** `2-broken-apps` |
| 222 | +- **Namespace:** `default` |
| 223 | +- **Cluster:** `aks-eastus2` |
| 224 | + |
| 225 | +--- |
| 226 | + |
| 227 | +*Analysis completed by: Copilot Agent* |
| 228 | +*Date: 2026-02-03* |
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