Root cause analysis for ArgoCD deployment failure: 2-broken-apps

[Copilot]

Investigated ArgoCD deployment failure for 2-broken-apps application showing "Degraded" health and "OutOfSync" status with error "one or more synchronization tasks are not valid (retried 2 times)".

Analysis Completed

Cloned and analyzed the external source repository (dcasati/argocd-notification-examples) to identify deployment blockers.

Root Causes Identified

1. Invalid Kubernetes API Version (Line 178)

apiVersion: apps/v  # Missing '1' - should be apps/v1
kind: Deployment

Causes immediate manifest validation failure in Kubernetes API.

2. Container Image Typo (Line 475)

image: ghcr.io/azure-samples/aks-store-demo/store-dmin:2.1.0  # Missing 'a' in admin

Results in ImagePullBackOff - image does not exist in registry.

Remediation Options

Three approaches documented for the engineering team:

1. Fix in source repository (recommended if access available)
2. Fork repository and update ArgoCD application to point to corrected fork
3. Apply Kustomize overlays to patch manifests in-place

Note on Intent

The source repository filename (broken-aks-store-all-in-one.yaml) suggests intentional breakage for testing ArgoCD notification workflows. Recommend verifying whether this is expected behavior before applying fixes.

Full analysis prepared for posting to issue #12 includes detailed remediation steps, verification commands, and references.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/graphql
  • Triggering command: /usr/bin/gh gh auth status (http block)
• https://api.github.com/repos/DevExpGbb/agentic-platform-engineering/issues/12/comments
  • Triggering command: /usr/bin/curl curl -X POST -H Accept: application/vnd.github+json -H Authorization: ****** X-GitHub-Api-Version: 2022-11-28 REDACTED -d {"body": "## ���� Root Cause Analysis\n\nI've analyzed the deployment failure for the 2-broken-apps ArgoCD application and identified **two critical issues** in the source repository that are causing the synchronization failures.\n\n### Issues Found\n\n (http block)
  • Triggering command: `/usr/bin/python3 python3 -c
    import os
    import json
    import urllib.request

Read the comment from file

with open('/tmp/remediation-comment.md', 'r') as f:
comment_body = f.read()

Prepare the request

url = 'REDACTED` (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>🚨 ArgoCD Deployment Failed: 2-broken-apps</issue_title>
<issue_description>## ArgoCD Deployment Failure

Application: 2-broken-apps
Timestamp: 2026-02-03T18:43:13Z

Cluster Information

Field	Value
Cluster Name	aks-eastus2
Namespace	default

Application Status

Field	Value
Health Status	Degraded
Sync Status	OutOfSync
Revision	8cd04df204028ff78613a69fdb630625864037c6
Repository	https://github.com/dcasati/argocd-notification-examples.git

Error Message

one or more synchronization tasks are not valid (retried 2 times).

Troubleshooting Commands

# Check application status in ArgoCD
argocd app get 2-broken-apps

# Check pods in namespace
kubectl get pods -n default

# Describe failed pods
kubectl describe pods -n default

# Get pod logs
kubectl logs -n default <pod-name>

# Check events
kubectl get events -n default --sort-by='.lastTimestamp'

Quick Links

• ArgoCD UI
• Source Repository

---

This issue was automatically created by ArgoCD Notifications
</issue_description>

<agent_instructions>Find the root cause for the issue. Do not try to directly fix it, only come up with remediation recommendation steps. Once you have do not write the steps to file (e.g. to a markdown) instead write it back to the original github issue as a comment in the issue thread.
</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes 🚨 ArgoCD Deployment Failed: 2-broken-apps #12

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