---
title: "Petclinic Demo Jonathan Scaf 2"
generated_by: documentor-agent
generated_at: "2026-05-05T10:49:39+00:00"
human_edited: false
source_entity: "Component/default/petclinic-demo-jonathan-scaf-2"
source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
---

# Petclinic Demo Jonathan Scaf 2

> A deployment of the Spring PetClinic application, scaffolded via Backstage and integrated with OpenTelemetry, ArgoCD, and Chaos Mesh.

## Overview

Petclinic Demo Jonathan Scaf 2 is a deployment of the Spring PetClinic application, a sample Spring Boot project designed to showcase best practices in Java application development. This deployment integrates modern DevOps tools and practices, including ArgoCD for continuous delivery, OpenTelemetry for observability, and Chaos Mesh for chaos engineering experiments.

The application provides a web interface for managing veterinary clinics, including features for scheduling appointments, managing pet records, and tracking veterinary staff. It is deployed in the `demo-apps` namespace and continuously synced from the `main` branch of its source repository. Observability is enabled via OpenTelemetry, with metrics and traces visualized in Grafana.

## Repository

| Field | Value |
|---|---|
| Source Repo | [https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2](https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2) |
| Branch | main |
| ArgoCD App | petclinic-demo-jonathan-scaf-2 |
| Namespace | demo-apps |

## Architecture

- The application is based on the Spring PetClinic project, cloned from [https://github.com/spring-projects/spring-petclinic](https://github.com/spring-projects/spring-petclinic).
- OpenTelemetry auto-instrumentation is applied via Kustomize overlays, enabling detailed observability.
- ArgoCD manages the deployment, continuously syncing changes from the `main` branch to the `demo-apps` namespace.
- Chaos Mesh is enabled for chaos engineering experiments, allowing resilience testing of the application.

Deployment flow:
1. Source code is cloned and scaffolded using Backstage templates.
2. OpenTelemetry instrumentation is injected.
3. ArgoCD syncs the application from the repository to the Kubernetes cluster.

## Configuration

| Configuration | Description |
|---|---|
| Environment Variables | `spring.profiles.active` for database configuration (`mysql`, `postgres`, or `default` for H2). |
| Database | Default is H2; supports MySQL and PostgreSQL with Docker or Docker Compose. |
| Observability | OpenTelemetry endpoint: `http://otel-collector.monitoring.svc.cluster.local:4318`. |

## Operations

### Deployment Workflow
1. Clone the repository:
   ```bash
   git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
   cd petclinic-demo-jonathan-scaf-2
   ```
2. Make changes and push:
   ```bash
   git add . && git commit -m "your change" && git push origin main
   ```
3. ArgoCD automatically syncs changes to the `demo-apps` namespace.

### Rollback
1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
2. Click **History and Rollback**.
3. Select the desired revision and click **Rollback**.

Alternatively, revert the commit in Git and push — ArgoCD will auto-sync the rollback.

<!-- TODO: FILL IN -->

## Observability

- **Grafana Dashboard**: [https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-app=petclinic-demo-jonathan-scaf-2](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-app=petclinic-demo-jonathan-scaf-2)
- OpenTelemetry instrumentation is enabled, exporting traces, metrics, and logs to the OTel Collector.

_Not configured — see platform observability docs._

## Dependencies

- `component:default/argocd-service`
- `resource:default/k6-operator`
- `resource:default/otel-collector`
- `resource:default/veterinary-platform`