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---
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title: "Petclinic Demo Jonathan Scaf 2"
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title: "Petclinic Demo Jonathan Scaf 2"
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generated_by: documentor-agent
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generated_by: documentor-agent
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generated_at: "2026-05-05T10:06:28+00:00"
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generated_at: "2026-05-05T10:49:39+00:00"
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human_edited: false
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human_edited: false
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source_entity: "Component/default/petclinic-demo-jonathan-scaf-2"
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source_entity: "Component/default/petclinic-demo-jonathan-scaf-2"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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@@ -9,15 +9,13 @@ source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2
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# Petclinic Demo Jonathan Scaf 2
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# Petclinic Demo Jonathan Scaf 2
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> A deployment of the Spring PetClinic application, scaffolded via Backstage and managed with ArgoCD in the `demo-apps` namespace.
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> A deployment of the Spring PetClinic application, scaffolded via Backstage and integrated with OpenTelemetry, ArgoCD, and Chaos Mesh.
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## Overview
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## Overview
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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 service was scaffolded using the Backstage Application Migration Factory template and integrates OpenTelemetry for observability, K6 for load testing, and Chaos Mesh for chaos engineering.
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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.
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The application provides a web interface for managing veterinary clinics, including features for scheduling appointments, managing pet records, and tracking clinic staff. It is deployed via ArgoCD, which continuously syncs the application from the `main` branch of its source repository into the `demo-apps` namespace.
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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.
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This deployment is instrumented for monitoring and observability, with metrics and traces visualized in Grafana. It also supports rollback and automated sync workflows through ArgoCD.
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## Repository
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## Repository
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@@ -33,43 +31,50 @@ This deployment is instrumented for monitoring and observability, with metrics a
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- 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).
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- 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).
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- OpenTelemetry auto-instrumentation is applied via Kustomize overlays, enabling detailed observability.
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- OpenTelemetry auto-instrumentation is applied via Kustomize overlays, enabling detailed observability.
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- ArgoCD manages the deployment, continuously syncing changes from the `main` branch to the `demo-apps` namespace.
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- ArgoCD manages the deployment, continuously syncing changes from the `main` branch to the `demo-apps` namespace.
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- The deployment flow includes CI workflows, Backstage catalog entity creation, and integration with monitoring tools like Grafana.
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- Chaos Mesh is enabled for chaos engineering experiments, allowing resilience testing of the application.
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Deployment flow:
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1. Source code is cloned and scaffolded using Backstage templates.
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2. OpenTelemetry instrumentation is injected.
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3. ArgoCD syncs the application from the repository to the Kubernetes cluster.
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## Configuration
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## Configuration
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| Configuration | Description |
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| Configuration | Description |
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| `spring.profiles.active` | Specifies the active Spring profile (`mysql`, `postgres`, or default `h2`). |
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| Environment Variables | `spring.profiles.active` for database configuration (`mysql`, `postgres`, or `default` for H2). |
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| Database | Default is H2 in-memory; supports MySQL and PostgreSQL with Docker or Docker Compose. |
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| Database | Default is H2; supports MySQL and PostgreSQL with Docker or Docker Compose. |
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| OpenTelemetry | Auto-instrumentation enabled; traces exported to OTel Collector. |
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| Observability | OpenTelemetry endpoint: `http://otel-collector.monitoring.svc.cluster.local:4318`. |
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## Operations
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## Operations
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### Development Workflow
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### Deployment Workflow
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1. Clone the repository:
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```bash
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```bash
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git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
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git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
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cd petclinic-demo-jonathan-scaf-2
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cd petclinic-demo-jonathan-scaf-2
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# make changes, then:
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```
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git add . && git commit -m "your change" && git push origin main
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2. Make changes and push:
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```
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```bash
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git add . && git commit -m "your change" && git push origin main
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ArgoCD monitors the repository and automatically syncs changes to the `demo-apps` namespace.
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```
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3. ArgoCD automatically syncs changes to the `demo-apps` namespace.
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### Rollback
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### Rollback
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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2. Click **History and Rollback**.
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2. Click **History and Rollback**.
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3. Select the desired revision and click **Rollback**.
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3. Select the desired revision and click **Rollback**.
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Alternatively, revert the commit in Git and push — ArgoCD will auto-sync the rollback.
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Alternatively, revert the commit in Git and push — ArgoCD will auto-sync the rollback.
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<!-- TODO: FILL IN -->
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## Observability
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## Observability
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- **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)
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- **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)
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- **OTel Collector Endpoint**: `http://otel-collector.monitoring.svc.cluster.local:4318`
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- OpenTelemetry instrumentation is enabled, exporting traces, metrics, and logs to the OTel Collector.
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Traces, metrics, and logs are exported to the OTel Collector and visualized in Grafana. Alerts are configured via Grafana and can be monitored in Backstage.
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_Not configured — see platform observability docs._
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## Dependencies
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## Dependencies
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@@ -1,81 +1,72 @@
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---
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---
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title: "Petclinic"
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title: "Petclinic Service"
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generated_by: documentor-agent
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generated_by: documentor-agent
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generated_at: "2026-05-05T10:50:01+00:00"
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generated_at: "2026-05-05T10:41:37+00:00"
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human_edited: false
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human_edited: false
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source_entity: "Component/default/petclinic"
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source_entity: "Component/default/petclinic"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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source_repo: "https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2"
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---
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---
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# Petclinic
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# Petclinic Service
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> A Spring Boot–based application for managing veterinary clinics, including appointments, customers, and pets.
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> A Spring Boot–based application for managing veterinary clinic operations, including scheduling, customer management, and pet records.
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## Overview
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## Overview
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The Petclinic service is a Java-based application built using Spring Boot. It provides functionality for managing veterinary clinic operations, including customer records, pet details, and appointment scheduling. The application is designed to be lightweight and modular, making it suitable for deployment in various environments.
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The Petclinic service is a Java-based application built using Spring Boot. It provides a comprehensive solution for managing veterinary clinic operations, including scheduling appointments, managing customer and pet records, and handling clinic workflows. Originally developed as a sample application by the Spring community, this service has been adapted and deployed as part of the `petclinic-demo-jonathan-scaf-2` system.
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Originally sourced from the Spring Petclinic project, this service has been scaffolded and enhanced using the Backstage Application Migration Factory template. It includes OpenTelemetry instrumentation for observability and integrates with ArgoCD for continuous deployment. The service is deployed in the `demo-apps` namespace and is part of the broader `petclinic-demo-jonathan-scaf-2` system.
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The application supports multiple database configurations, including in-memory H2, MySQL, and PostgreSQL, and is designed to be easily deployable in containerized environments. It includes OpenTelemetry instrumentation for observability and integrates with ArgoCD for continuous deployment. The service plays a critical role in the broader veterinary platform, serving as the primary interface for clinic management.
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## Repository
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## Repository
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| Field | Value |
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| Field | Value |
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| Source Repo | [https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2](https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2) |
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| Source Repo | [Petclinic Repository](https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2) |
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| Branch | main |
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| Branch | main |
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| ArgoCD App | petclinic-demo-jonathan-scaf-2 |
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| ArgoCD App | petclinic-demo-jonathan-scaf-2 |
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| Namespace | demo-apps |
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| Namespace | demo-apps |
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## Architecture
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## Architecture
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- The service is based on the Spring Boot framework, leveraging its modularity and ease of integration.
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- The Petclinic service is scaffolded using the Application Migration Factory Backstage template.
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- OpenTelemetry auto-instrumentation is applied via a Kustomize overlay, enabling detailed observability for traces, metrics, and logs.
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- Deployment flow:
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- Continuous deployment is managed by ArgoCD, which syncs changes from the `main` branch to the `demo-apps` namespace.
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1. Source code cloned from the original Spring Petclinic repository.
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- The application supports multiple database configurations, including H2 (default), MySQL, and PostgreSQL, with profiles for each.
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2. Backstage overlays applied for catalog entity creation and CI workflows.
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3. OpenTelemetry auto-instrumentation injected via Kustomize overlays.
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4. ArgoCD Application created targeting the `demo-apps` namespace.
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5. Continuous sync from the `main` branch via ArgoCD.
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- Observability is enabled through OpenTelemetry, with metrics and traces visualized in Grafana.
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## Configuration
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## Configuration
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| Configuration | Description |
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| Configuration | Description |
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| `spring.profiles.active` | Specifies the active Spring profile (`mysql`, `postgres`, or default `h2`). |
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| `spring.profiles.active` | Sets the active Spring profile (`mysql`, `postgres`, or default `h2`). |
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| Database URLs | H2: `jdbc:h2:mem:<uuid>` (default), MySQL: `docker-compose up mysql`, PostgreSQL: `docker-compose up postgres`. |
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| Database URL | For H2: `jdbc:h2:mem:<uuid>` (printed at startup). |
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| OpenTelemetry Endpoint | `http://otel-collector.monitoring.svc.cluster.local:4318`. |
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| MySQL Docker | `docker run -e MYSQL_USER=petclinic -e MYSQL_PASSWORD=petclinic -e MYSQL_ROOT_PASSWORD=root -e MYSQL_DATABASE=petclinic -p 3306:3306 mysql:9.6` |
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| PostgreSQL Docker | `docker run -e POSTGRES_USER=petclinic -e POSTGRES_PASSWORD=petclinic -e POSTGRES_DB=petclinic -p 5432:5432 postgres:18.3` |
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## Operations
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## Operations
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### Local Development
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- **Local Development**:
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1. Clone the repository: `git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git`.
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2. Start the application using Maven: `./mvnw spring-boot:run` or Gradle: `./gradlew bootRun`.
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3. Access the application at `http://localhost:8080`.
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1. Clone the repository:
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- **Container Build**:
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```bash
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Use the Spring Boot build plugin: `./mvnw spring-boot:build-image`.
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git clone https://gitea.kyndemo.live/validate/petclinic-demo-jonathan-scaf-2.git
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cd petclinic-demo-jonathan-scaf-2
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```
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2. Run the application:
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- Maven: `./mvnw spring-boot:run`
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- Gradle: `./gradlew bootRun`
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3. Access the application at [http://localhost:8080](http://localhost:8080).
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### Deployment
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- **Rollback**:
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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2. Use the "History and Rollback" feature to revert to a previous version.
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Changes pushed to the `main` branch are automatically synced by ArgoCD to the `demo-apps` namespace. To roll back, use the ArgoCD UI or revert the Git commit.
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<!-- TODO: FILL IN -->
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### Database Setup
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- Default: In-memory H2 database.
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- Persistent options: MySQL or PostgreSQL, configured via Spring profiles.
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### Rollback
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1. Open the [ArgoCD UI](https://argocd.kyndemo.live/applications/petclinic-demo-jonathan-scaf-2).
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2. Select **History and Rollback**.
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3. Choose the desired revision and click **Rollback**.
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## Observability
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## Observability
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- **Grafana Dashboard**: [OpenTelemetry Application Observability](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-service=petclinic).
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- **Grafana Dashboard**: [OpenTelemetry Application Observability](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-service=petclinic).
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- **Alerts**: Configured via Grafana, filtered by `app=petclinic`.
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- **OTel Collector Endpoint**: `http://otel-collector.monitoring.svc.cluster.local:4318`.
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- **Alerts**: Configured via Grafana with label selector `app=petclinic`.
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_Not configured — see platform observability docs for additional details._
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## Dependencies
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## Dependencies
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Reference in New Issue
Block a user