Create test application to check Heroku

[dawids21]

Running Spring Boot Application on Heroku

[dawids21]

Links

• https://devcenter.heroku.com/articles/preparing-a-codebase-for-heroku-deployment
• https://devcenter.heroku.com/articles/getting-started-with-java
• https://devcenter.heroku.com/articles/git
• https://devcenter.heroku.com/articles/deploying-java
• https://devcenter.heroku.com/articles/java-support

Test app

heroku-mongodb-test-app

Heroku

Deploying an app to Heroku

1. Create a Git repository inside the app
2. Add Heroku remote
3. Specify Java version inside system.properties file (java.runtime.version=15) - default 1.8
4. Push your deployment branch to the Heroku remote.
5. To view logs use heroku logs --tail

Procfile

• plaintext file used to explicitly declare what commands should be executed to run the application
• `web: java' - specify a process to handle web requests
• release: migrate.sh - specify commands to run during the release phase

Running the app locally

It allows us to check our deployment's config in the local environment. Use heroku local web. The app will be available on port 5000.

Config vars

Store sensitive data. At runtime, they are exposed using environmental variables. To add use heroku config:set VAR='value'. To view config vars use heroku config. To use local config vars you can add them to the .env file as KEY=VALUE pairs.

One-off dyno

Used to run command in the terminal on the app instance. To use run heroku run java -version