From 3bf38d96fd798176545f84457db42db7397c005b Mon Sep 17 00:00:00 2001 From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com> Date: Tue, 3 Feb 2026 20:21:34 +0000 Subject: [PATCH 1/3] Initial plan From bf7810b716193561ca6413a80baed93306904ec8 Mon Sep 17 00:00:00 2001 From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com> Date: Tue, 3 Feb 2026 20:24:11 +0000 Subject: [PATCH 2/3] Add comprehensive diagnostic reports for 2-broken-apps ArgoCD failure Co-authored-by: raykao <860691+raykao@users.noreply.github.com> --- DIAGNOSTIC_REPORT_2-broken-apps.md | 342 ++++++++++++++++++++++++++++ DIAGNOSTIC_SUMMARY_2-broken-apps.md | 52 +++++ 2 files changed, 394 insertions(+) create mode 100644 DIAGNOSTIC_REPORT_2-broken-apps.md create mode 100644 DIAGNOSTIC_SUMMARY_2-broken-apps.md diff --git a/DIAGNOSTIC_REPORT_2-broken-apps.md b/DIAGNOSTIC_REPORT_2-broken-apps.md new file mode 100644 index 0000000..f8f52e6 --- /dev/null +++ b/DIAGNOSTIC_REPORT_2-broken-apps.md @@ -0,0 +1,342 @@ +# ArgoCD Deployment Failure: Diagnostic Report +## Application: `2-broken-apps` + +**Report Date**: 2026-02-03 +**Investigated By**: GitHub Copilot Agent +**Status**: Root Cause Identified + +--- + +## Executive Summary + +The ArgoCD application `2-broken-apps` is experiencing deployment failures due to **invalid Kubernetes manifest syntax** in the source repository. The investigation identified two critical errors in the manifest file that prevent successful synchronization. + +**Current Status**: +- Health Status: `Degraded` +- Sync Status: `OutOfSync` +- Error: "one or more synchronization tasks are not valid (retried 2 times)" + +**Root Cause**: Invalid YAML syntax in the Kubernetes manifest files from the external repository. + +--- + +## Investigation Summary + +### Application Configuration + +The ArgoCD application references the following external repository: +- **Repository**: `https://github.com/dcasati/argocd-notification-examples.git` +- **Path**: `apps/` +- **Revision**: `8cd04df204028ff78613a69fdb630625864037c6` +- **Target File**: `apps/broken-aks-store-all-in-one.yaml` + +### Root Causes Identified + +After cloning and analyzing the external repository, two critical syntax errors were found in the manifest file `apps/broken-aks-store-all-in-one.yaml`: + +#### 🔴 Issue #1: Incomplete API Version (Line 178) + +**Location**: `apps/broken-aks-store-all-in-one.yaml:178` + +**Current (Invalid)**: +```yaml +apiVersion: apps/v +kind: Deployment +metadata: + name: order-service +``` + +**Should Be**: +```yaml +apiVersion: apps/v1 +kind: Deployment +metadata: + name: order-service +``` + +**Impact**: +- Kubernetes API server rejects the manifest due to invalid API version +- The `order-service` Deployment cannot be created +- Blocks the entire synchronization process + +**Error Type**: Syntax error - incomplete API version specification + +--- + +#### 🔴 Issue #2: Typo in Container Image Name (Line 475) + +**Location**: `apps/broken-aks-store-all-in-one.yaml:475` + +**Current (Invalid)**: +```yaml +containers: + - name: store-admin + image: ghcr.io/azure-samples/aks-store-demo/store-dmin:2.1.0 +``` + +**Should Be**: +```yaml +containers: + - name: store-admin + image: ghcr.io/azure-samples/aks-store-demo/store-admin:2.1.0 +``` + +**Impact**: +- Container image `store-dmin` does not exist in the registry (typo: missing 'a') +- The `store-admin` pod fails to pull the image +- Pod enters `ImagePullBackOff` or `ErrImagePull` state +- Application health becomes `Degraded` + +**Error Type**: Configuration error - incorrect image reference + +--- + +## Why ArgoCD Reports "Invalid Synchronization Tasks" + +ArgoCD performs validation of Kubernetes manifests before applying them to the cluster. The validation process: + +1. **Syntax Validation**: Checks if YAML is well-formed and contains valid Kubernetes API objects +2. **API Server Validation**: Sends manifests to the Kubernetes API server for validation +3. **Dry-Run Check**: Attempts a dry-run apply to detect issues before actual deployment + +**Issue #1** (incomplete API version) fails at the **Syntax/API Validation** stage because: +- `apiVersion: apps/v` is not a valid Kubernetes API version +- The API server cannot parse or validate the resource +- ArgoCD marks the synchronization task as "invalid" and retries + +**Issue #2** (typo in image name) would fail at the **Runtime** stage after Issue #1 is fixed: +- The manifest syntax is valid, so it passes validation +- However, when Kubernetes tries to create the pod, it cannot pull the image +- This causes the health check to report `Degraded` status + +--- + +## Recommended Remediation Approach + +### Option 1: Fix the Source Repository (Recommended) + +**Action**: Submit a pull request to `https://github.com/dcasati/argocd-notification-examples` to fix the manifest errors. + +**Steps**: +1. Fork the repository `dcasati/argocd-notification-examples` +2. Fix both issues in `apps/broken-aks-store-all-in-one.yaml`: + - Line 178: Change `apiVersion: apps/v` to `apiVersion: apps/v1` + - Line 475: Change `store-dmin` to `store-admin` +3. Test the manifest locally: + ```bash + kubectl apply --dry-run=client -f apps/broken-aks-store-all-in-one.yaml + kubectl apply --dry-run=server -f apps/broken-aks-store-all-in-one.yaml + ``` +4. Submit pull request to the upstream repository +5. Wait for the PR to be merged (or use your fork as the source) +6. Update ArgoCD application to point to the fixed repository + +**Pros**: +- Fixes the root cause permanently +- Benefits other users of the repository +- Maintains GitOps best practices + +**Cons**: +- Depends on external repository maintainer approval +- Takes time for PR review and merge + +--- + +### Option 2: Use a Forked/Local Copy + +**Action**: Create a fork or local copy of the repository with fixes applied. + +**Steps**: +1. Fork `dcasati/argocd-notification-examples` to your organization/account +2. Apply the fixes to your fork +3. Update the ArgoCD Application manifest to point to your fork: + ```yaml + spec: + source: + repoURL: https://github.com/YOUR-ORG/argocd-notification-examples.git + targetRevision: main + path: apps + ``` +4. Sync the ArgoCD application + +**Pros**: +- Immediate control over the fix +- No dependency on external maintainers +- Can be done within your team + +**Cons**: +- Creates a fork that needs to be maintained +- Diverges from the upstream repository + +--- + +### Option 3: Override with Kustomize + +**Action**: Use Kustomize patches to override the broken manifest without modifying the source repository. + +**Steps**: +1. Create a Kustomize overlay directory in your repository: + ``` + overlays/ + broken-apps-fix/ + kustomization.yaml + patch-order-service.yaml + patch-store-admin.yaml + ``` + +2. Create `kustomization.yaml`: + ```yaml + apiVersion: kustomize.config.k8s.io/v1beta1 + kind: Kustomization + resources: + - https://github.com/dcasati/argocd-notification-examples//apps?ref=main + patches: + - path: patch-order-service.yaml + - path: patch-store-admin.yaml + ``` + +3. Create `patch-order-service.yaml`: + ```yaml + apiVersion: apps/v1 + kind: Deployment + metadata: + name: order-service + ``` + +4. Create `patch-store-admin.yaml`: + ```yaml + apiVersion: apps/v1 + kind: Deployment + metadata: + name: store-admin + spec: + template: + spec: + containers: + - name: store-admin + image: ghcr.io/azure-samples/aks-store-demo/store-admin:2.1.0 + ``` + +5. Update ArgoCD Application to use the Kustomize overlay + +**Pros**: +- No need to fork the repository +- Fixes are version-controlled in your own repository +- Easy to maintain and review + +**Cons**: +- Adds complexity with Kustomize layers +- Still depends on the source repository for base resources + +--- + +## Verification Steps + +After applying the fix, verify the deployment with these commands: + +```bash +# 1. Check ArgoCD application status +argocd app get 2-broken-apps + +# Expected: Health Status: Healthy, Sync Status: Synced + +# 2. Verify all pods are running +kubectl get pods -n default -l app in (order-service,store-admin,product-service,store-front,makeline-service,mongodb,rabbitmq) + +# Expected: All pods in Running state + +# 3. Check for image pull errors +kubectl get pods -n default -o json | jq -r '.items[] | select(.status.containerStatuses[]?.state.waiting.reason == "ImagePullBackOff" or .status.containerStatuses[]?.state.waiting.reason == "ErrImagePull") | .metadata.name' + +# Expected: No output (no pods with image pull errors) + +# 4. Verify deployment health +kubectl get deployments -n default + +# Expected: All deployments show READY status + +# 5. Check ArgoCD sync history +argocd app history 2-broken-apps + +# Expected: Latest sync shows SUCCESS +``` + +--- + +## Additional Recommendations + +### 1. Implement Pre-Deployment Validation + +Add CI/CD checks to validate Kubernetes manifests before they reach ArgoCD: + +```yaml +# Example GitHub Actions workflow +name: Validate Kubernetes Manifests +on: [pull_request] +jobs: + validate: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - name: Validate YAML syntax + run: | + find . -name "*.yaml" -o -name "*.yml" | xargs yamllint + - name: Validate Kubernetes resources + run: | + kubectl apply --dry-run=client -f apps/ + kubectl apply --dry-run=server -f apps/ +``` + +### 2. Use ArgoCD Resource Hooks for Health Checks + +Configure custom health checks in ArgoCD to detect issues faster: + +```yaml +# In ArgoCD Application +spec: + syncPolicy: + automated: + prune: true + selfHeal: true + syncOptions: + - CreateNamespace=true + - PruneLast=true + retry: + limit: 5 # Increase retry limit for transient issues + backoff: + duration: 10s + factor: 2 + maxDuration: 3m +``` + +### 3. Monitor Image Availability + +Implement monitoring to check if container images exist before deployment: + +```bash +# Script to validate images exist +#!/bin/bash +for image in $(yq eval '.spec.template.spec.containers[].image' deployment.yaml); do + docker pull "$image" --quiet || echo "ERROR: Image not found: $image" +done +``` + +--- + +## Conclusion + +The ArgoCD deployment failure for `2-broken-apps` is caused by two manifest errors in the source repository: +1. **Incomplete API version** (`apps/v` instead of `apps/v1`) on line 178 +2. **Typo in image name** (`store-dmin` instead of `store-admin`) on line 475 + +**Recommended Next Steps**: +1. ✅ Choose remediation approach (Option 1 recommended for long-term solution) +2. ✅ Apply the fix according to the chosen approach +3. ✅ Verify the deployment using the verification steps provided +4. ✅ Implement additional recommendations to prevent similar issues + +**Estimated Time to Fix**: 15-30 minutes (depending on chosen approach) + +--- + +**Note**: This is a diagnostic report only. No remediation has been applied to the source repository or ArgoCD configuration. The fixes described above should be implemented by the platform engineering team. diff --git a/DIAGNOSTIC_SUMMARY_2-broken-apps.md b/DIAGNOSTIC_SUMMARY_2-broken-apps.md new file mode 100644 index 0000000..173f3ab --- /dev/null +++ b/DIAGNOSTIC_SUMMARY_2-broken-apps.md @@ -0,0 +1,52 @@ +# Quick Diagnostic Summary: 2-broken-apps ArgoCD Failure + +## 🔍 Root Cause Analysis + +**Application**: `2-broken-apps` +**Status**: Degraded / OutOfSync +**Error**: "one or more synchronization tasks are not valid" + +--- + +## ❌ Issues Found + +### Issue 1: Invalid API Version +- **File**: `apps/broken-aks-store-all-in-one.yaml` +- **Line**: 178 +- **Current**: `apiVersion: apps/v` +- **Fix**: `apiVersion: apps/v1` +- **Impact**: Manifest validation fails, blocking sync + +### Issue 2: Typo in Image Name +- **File**: `apps/broken-aks-store-all-in-one.yaml` +- **Line**: 475 +- **Current**: `image: ghcr.io/azure-samples/aks-store-demo/store-dmin:2.1.0` +- **Fix**: `image: ghcr.io/azure-samples/aks-store-demo/store-admin:2.1.0` +- **Impact**: Image pull fails, pod degraded + +--- + +## ✅ Recommended Fix + +**Option 1** (Best): Submit PR to fix `https://github.com/dcasati/argocd-notification-examples` + +**Option 2** (Fast): Fork repo, apply fixes, update ArgoCD to use fork + +**Option 3** (Advanced): Use Kustomize patches to override errors + +--- + +## 📋 Quick Verification + +```bash +# After fix is applied: +argocd app get 2-broken-apps +kubectl get pods -n default +kubectl get deployments -n default +``` + +Expected result: All pods Running, Deployment Healthy, Sync Succeeded + +--- + +**See**: `DIAGNOSTIC_REPORT_2-broken-apps.md` for detailed analysis and remediation options. From d8f22cbcaa97b4d047f5318c247c770cc06192a1 Mon Sep 17 00:00:00 2001 From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com> Date: Tue, 3 Feb 2026 20:25:01 +0000 Subject: [PATCH 3/3] Fix kubectl command syntax in diagnostic report Co-authored-by: raykao <860691+raykao@users.noreply.github.com> --- DIAGNOSTIC_REPORT_2-broken-apps.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/DIAGNOSTIC_REPORT_2-broken-apps.md b/DIAGNOSTIC_REPORT_2-broken-apps.md index f8f52e6..b6481dd 100644 --- a/DIAGNOSTIC_REPORT_2-broken-apps.md +++ b/DIAGNOSTIC_REPORT_2-broken-apps.md @@ -241,7 +241,7 @@ argocd app get 2-broken-apps # Expected: Health Status: Healthy, Sync Status: Synced # 2. Verify all pods are running -kubectl get pods -n default -l app in (order-service,store-admin,product-service,store-front,makeline-service,mongodb,rabbitmq) +kubectl get pods -n default | grep -E "(order-service|store-admin|product-service|store-front|makeline-service|mongodb|rabbitmq)" # Expected: All pods in Running state