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Deploy users-mysql Springboot application on Kubernetes #1

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Deploy users-mysql Springboot application on Kubernetes #1

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@AymenSegni AymenSegni commented Jun 1, 2020 •
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Deploy Springboot and MySQL on Kubernetes

The first step is to obtain the application source code and Dockerfile.
and use them as a starting point for creating a custom yaml manifests to automate the application deployment in a Kubernetes cluster.

I used Minikube to deploy this Springboot application, but it should work with any cloud provider or distribution.

Assumption And Prerequisites

  • You have a Docker environment running.
  • You have an account in a container registry (this project assumes that you are using Docker Hub).
  • You have Minikube installed in your local computer.
  • You have the kubectl command line (kubectl CLI) installed.
  • You have Java JDK v8 installed
  • You have Maven installed on your machine for local deployment
  • You have Helm v3 installed on your machine for deployment (optional)

Run the application on Kubernetes

Build the Application with Maven

$ mvn package

Create Application environment Secrets

$ kubectl create secret generic mysql-root-pass --from-literal=password=password
$ kubectl create secret generic mysql-user-pass --from-literal=username=sa --from-literal=password=password

$ kubectl create secret generic mysql-db-url --from-literal=database=test --from-useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false'

Verfiy secrets creation

$ kubectl get secrets

NAME                  TYPE                                  DATA   AGE
default-token-qw42v   kubernetes.io/service-account-token   3      6m11s
mysql-db-url          Opaque                                2      3m33s
mysql-root-pass       Opaque                                1      5m49s
mysql-user-pass       Opaque                                2      5m18s

Deploy the users-mysql Application on Kubernetes

$ kubectl apply -f k8s-deployment/app-deployment.yaml

Verfiy Deployment

$ kubectl  get pods
NAME                                  READY   STATUS    RESTARTS   AGE
users-mysql-6f9858cfd-ptmjl           1/1     Running   0          94s
users-mysql-6f9858cfd-sngph           1/1     Running   0          94s


$ kubectl  get deployments.apps
NAME                 READY   UP-TO-DATE   AVAILABLE   AGE
users-mysql          2/2     2            2           3m16s

Verify the application's service

$ minikube service list
|-------------|--------------------|----------------------------|-----|
|  NAMESPACE  |        NAME        |        TARGET PORT         | URL |
|-------------|--------------------|----------------------------|-----|
| default     | kubernetes         | No node port               |
| default     | users-mysql        | http://192.168.64.23:30793 |
| kube-system | kube-dns           | No node port               |

Deploy MySQL

$ kubectl apply -f k8s-deployment/mysql.yaml

Verfiy MySQL Deployment : user-mysql-server

$  kubectl get deployments

NAME                 READY   UP-TO-DATE   AVAILABLE   AGE
users-mysql-server   1/1     1            1           61s

Get Application's service url

$ minikube service users-mysql --url

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@AymenSegni