Weather App Deployment

A Continuous Deployment example project

Key Features 🔑

This deployment sample project is based on a sample Java Maven project
It's creating a Kind Cluster
Deployment options
- Simple manual manifest deployment
- Flux continence deployment
Using Flux Image Policy for ongoing docker image updates
Setup required tools script

Jenkins Pipeline 🌩️

The Jenkins pipeline is executing the below deployment script.
Its for testing and demonstration purposes only and as such its deleting the existing cluster (if created).
The pipeline is parameterized to support the below deployment options: Flux or manual manifest deployment.
Note: This is only an example to demonstrate the CD principle. For real life scenarios you might want to split between the pipelines of deployment and infrastructure creation

Deployment

cd ~/[your-workspace]
https://github.com/devozs/weather-app-cd.git
cd weather-app-cd

running the script ./install-cluster.sh will create a Kind cluster.

There are two possible ways to deploy the sample Java Maven project

Manual Deployment 🚪

./install-cluster.sh -t manual

FluxCD Deployment 🌩️

./install-cluster.sh -t flux -f your-github-account

For example ./install-cluster.sh -t flux -f devozs

Make sure to have GitHub PAT

For more information refer to the Getting Started with Flux

Testing the deployment

Verify the flux pods are deployed successfully (Skip in case of using Manual Deployment)

kubectl get pods -n flux-system

NAME                                           READY   STATUS    RESTARTS   AGE
helm-controller-6dcbff747f-76xlv               1/1     Running   0          8m10s
image-automation-controller-75f784cfdc-29zcg   1/1     Running   0          8m10s
image-reflector-controller-67d6bdcb59-xb9m5    1/1     Running   0          8m10s
kustomize-controller-5bb9984cf9-7l7nk          1/1     Running   0          8m10s
notification-controller-7569f7c974-clccq       1/1     Running   0          8m10s
source-controller-5b976b8dd6-w6gjn             1/1     Running   0          8m10s

Verify the flux is able to identify the Docker images (Skip in case of using Manual Deployment)

flux get image policy -A

NAMESPACE       NAME            READY   MESSAGE                                                         LATEST IMAGE             
flux-system     weather-app     True    Latest image tag for 'devozs/weather-app' resolved to: 0.0.3    devozs/weather-app:0.0.3

Verify the application pod is deployed successfully. for example:

kubectl get pod

NAME                         READY   STATUS    RESTARTS   AGE
weather-app-65ccb54c-z7cfv   1/1     Running   0          8m27s

Verify the application pod is running

Run the following script ./verify-deployment.sh or manually run the below commands:

    POD_NAME=$(kubectl get pods --template '{{range .items}}{{.metadata.name}}{{end}}' | grep weather-app)
    kubectl logs ${POD_NAME}

    2021/08/21 11:44:50.011 [INFO] [org.devozs.weather.WeatherApp] Task performed on: Sat Aug 21 11:44:50 GMT 2021, Thread's name: TIMER
    2021/08/21 11:44:50.011 [INFO] [org.devozs.weather.WeatherApp] Getting Weather...
    2021/08/21 11:44:51.722 [INFO] [org.devozs.weather.WeatherApp] Response Code: 200

devozs / weather-app-cd Goto Github PK

weather-app-cd's Introduction