Cloning applications

Table of Contents

Say you have an existing deployment on Cloud Foundry, and you want to make a new staging environment. Below are the different scenarios around application manifests.

If you have a single manifest

1. Run cf push <NEW_APP_NAME>.
2. Use the CLI to do any other necessary configuration.

If you have environment-specific manifests

1. Use manifest inheritance to do any necessary configuration.
2. Run cf push <NEW_APP_NAME> -f <PATH_TO_MANIFEST>.
3. Make sure to run any necessary database setup commands, etc.

If you don’t have a manifest

1. Generate a manifest from an existing application:

    cf target -o <EXISTING_APP_ORG> -s <EXISTING_APP_SPACE>
    cf create-app-manifest <EXISTING_APP_NAME>
    cp <EXISTING_APP_NAME>_manifest.yml <NEW_APP_NAME>_manifest.yml
   

2. Clean up <NEW_APP_NAME>_manifest.yml. You probably only need the following properties:
   • name (required) – make sure to change it to the new app name
   • env – change any environment-specific variables, e.g. the DATABASE_URL
   • services

3. Deploy the new environment:

    cf push <NEW_APP_NAME> -f <NEW_APP_NAME>_manifest.yml
   

4. Make sure to run any necessary database setup commands, etc. for the new application.