Spring Cloud Task as K8s Cronjob

Spring Cloud Task Application running as CronJob in Kubernetes

A Spring Cloud Task Application which runs as CronJob in Kubernetes every minute to fetch BitCoin rates, saves the rates in Mysql and notifies Users if/when the threshold is reached.

Installation and Configuration

Pre-requisite:

MySql Server is up and running and application is configured the MySql credentials

Clone repo:
$ git clone https://github.com/RawSanj/spring-cloud-task-as-k8s-cronjob.git

Build and Run the applications:

Build and run the spring-cloud-task-as-k8s-cronjob application:

$ cd spring-cloud-task-as-k8s-cronjob

$ mvn clean package

$ mvn spring-boot:run

Run in Kubernetes

Assuming you have a Kubernetes Cluster up and running and kubectl is configured, run:

$ kubectl apply -f src/main/k8s

Or try Play with Kubernetes to quickly setup a K8S cluster:

  1. Follow the instructions to create Kubernetes cluster.
  2. Install git by running:

    $ yum install git -y

  3. Clone the repository:

    $ git clone https://github.com/RawSanj/spring-cloud-task-as-k8s-cronjob.git

  4. Update Kubernetes Secrets under src/main/k8s/cronjob.yaml file.

  5. Run spring-cloud-task-as-k8s-cronjob as Kubernetes CronJob. CronJob Pods connects to MySql server and stores Bitcoin rates every minute.

    $ cd spring-cloud-task-as-k8s-cronjob

    $ kubectl apply -f src/main/k8s

  6. Clone and deploy the UI Application - spring-cronjob-currency by running kubectl apply -f src/main/k8s

Avatar
Sanjay Rawat
Cloud Developer

I’m interested in all Cloud Tech - AWS, Serverless, Docker, Kubernetes. Mostly write Java, Spring, Kotlin and Node.js code.