While working with any project, you will eventually face the need to upgrade or modify it. Of course, before applying any changes in production, you should thoroughly test them. With Jelastic PaaS, this can be done in a separate environment, and once the new version is ready, you can just swap domains between these development/testing and production projects for an immediate version switch.
So, by utilizing this functionality, you can skip the steps of rolling out updates to the environment in production (avoiding additional configurations and possible downtime) and simultaneously keep the previous version of your application for a quick rollback in case of necessity.
So, let’s see how this works.
Create Test Environment
1. Locate your environment in production with the application that you want to update. In our example, it is called production.
Note: This environment should have a bound custom domain (e.g. production.com) that you will consequently swap with a different environment.
2. Click the Open in Browser button or access via custom domain to see your application.
3. Clone this environment to automatically create its identical copy including, all deployed packages, databases, etc. Let’s name it testing.
4. Click the Open in Browser button for your cloned environment to make sure that everything works fine.
Now, you can add new features, customize settings, apply updates, etc. All without affecting the original environment.
1. Make the needed changes (either directly via the dashboard or by deploying the new project version) to the cloned environment. The following documentation guides can help you with your project adjustments:
2. Click the Open in Browser button for your updated project to test your changes.
Note: The Swap Domain functionality will work even if only one environment has a bound domain. However, for more thorough testing, you can bind a custom domain to your cloned environment as well.
After testing the updates, the next step is to swap domains of the production and testing environments.
1. Open the Settings for one of your environments (e.g. production one). Here, the required Custom Domains section will be opened by default.
2. In the Swap Domains subsection, choose the environment with which you want to swap domains (the testing one in our case) and click the Swap button.
3. Now, you can navigate to your production environment custom domain (production.com in our case) and see that your application has been updated.