Deploy your webapp on Clever Cloud (EN)

28/10/2023

Gradle Spring

Table of Contents

Clever Cloud
Common errors
- Java version
- Windows

Clever Cloud

Clever cloud is a platform designed by developers for developers.

You Write Code.They Run It.

When you write code, you push sources on Github. Clever Cloud is able to install your app from your Github repository.

Account creation

When you are connected, you can create a new account on https://www.clever-cloud.com/en/

Click on Login button

Click on the connect button with Github.

It’s important to create your account from your Github account. When you account is created send me your email and I will add you on the common repository. When you will receive a confirmation email, click on "Join CoursEmse2023" Button

EMSE space will be added on your clever cloud environment

Configure your project

Before this deployment you have to create a folder called "clevercloud" in your Spring Boot project

Inside, add a file gradle.json.This file will contain

{
  "build": {
    "type": "gradle",
    "goal": "assemble"
  },
  "deploy": {
    "jarName": "./build/libs/automacorp-0.0.1-SNAPSHOT.jar"
  }
}

To know the name of your jar go on folder ./build/libs/. Push your last changes on your Github repository. For the moment, CleverCloud used only Github

Deploy on Clevercloud

You are ready to deploy your app in Clever Cloud.Open EMSE Clever Cloud space

Click on button called "Create…" and select "an application". This application will be generated from your Github repository. Select the project to deploy

You have to choose the kind of your application. For a Spring Boot application it will be a Java or Groovy + Gradle application

The next step is to choose the type and the number of your server.With our free plan you must keep the default configuration and click on Next button. But in real life you can choose the power and the number of servers.More your server will be powerful more the price is expensive

You have to use a specific name. It’s important when you have several apps.In our case you have to use automacorp-firstname-lastname. You must also select in which zone of the world your application will be deployed (you can only select France in this lab).

In the next step you can choose if you need an add-on as a database for example. We don’t need to install a database because your app use an embedded H2 database. Click on I don’t need any add-ons button

You can define environment variables and it’s important for us. We need to override the default Java Version used by Clever Cloud. For that add a new environment variables called

CC_JAVA_VERSION and with a value equals to 17.
PORT and with a value equals to 8080.

Installation starts and you have to wait several minutes.

You can explore different section to update the app setup

Overview : contains buttons to reinstall your app and the link to access to your app
Information
Scalability
Domain names : helps to personalize the URL of its application or parameter its own domain main
Environment variables
Service dependencies
Exposed configuration
Activity
Logs if deployment fail you have to go in this section to find the error
Metrics

Define a custom URL to access to your application and click on the star to use it by default

Now you can use your app deployed on the Internet. This app will be automatically redeployed, when you will push a new commit on Github. If you have done previous lessons, you should open http://[yourname].cleverapps.io/swagger-ui/index.html

Common errors

Java version

If you have this error

2023-09-05T21:04:32+02:00 - Incompatible because this component declares a component for use during compile-time, compatible with Java 17 and the consumer needed a component for use during runtime, compatible with Java 11 ---

You forgot to follow the section on environment variables

Windows

If you are on Windows you can have this error

2020-11-23T13:58:00+01:00 A gradlew script has been found. Let's use it.
2020-11-23T13:58:01+01:00 /home/bas/rubydeployer/scripts/build-java.sh: line 9: ./gradlew: Permission denied
2020-11-23T13:58:01+01:00 Build failed

To fix it you can follow this article.Or execute this command

git update-index --chmod=+x gradlew
git push origin main