ArgoCD is a popular tool for continuous delivery and deployment of applications in a Kubernetes cluster. It provides a declarative approach to manage applications and their deployments, making it easy to roll out new releases and updates. However, there may be instances when you need to rollback an application to a previous version. In this article, we will explore how to rollback an application with ArgoCD.
Prerequisites
- A Kubernetes cluster with ArgoCD installed.
- An application deployed with ArgoCD.
Step 1: Identify the current version of the application
Before rolling back an application, you need to identify the current version of the application that is running. To do this, navigate to the ArgoCD web UI and select the application you want to rollback. In the Application Overview page, you will see the current version of the application under the "REVISION HISTORY" section.
Step 2: Rollback the application
Once you have identified the current version of the application, you can roll back to a previous version. To do this, follow the steps below:
- Navigate to the ArgoCD web UI and select the application you want to rollback.
- In the Application Overview page, click on the "REVISION HISTORY" section.
- Find the revision you want to rollback to and click on the "ROLLBACK" button next to it.
- In the confirmation dialog box, click "ROLLBACK" to confirm the rollback.
After the rollback process is complete, the application will be reverted to the previous version.
Step 3: Verify the rollback
To verify that the rollback was successful, navigate to the ArgoCD web UI and select the application you rolled back. In the Application Overview page, you will see the previous version of the application under the "REVISION HISTORY" section.
Commands
ArgoCD provides a command-line interface (CLI) that you can use to perform various tasks, including rolling back an application. The command to rollback an application is:argocd app rollback APPNAME
Where APPNAME is the name of the application you want to rollback.
More Examples
In addition to rolling back an application to a previous version, ArgoCD also supports rolling forward to a newer version. To roll forward an application, follow the same steps as rolling back, but select a newer revision to roll forward to.You can also use ArgoCD to automate rollbacks based on certain conditions, such as failed health checks or failed tests. This can be achieved using ArgoCD's automated rollback feature, which is based on Kubernetes readiness probes and custom scripts.
Rolling back an application with ArgoCD is a straightforward process that can be done through the web UI or CLI. By following the steps outlined in this article, you can easily revert to a previous version of your application if needed.
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That's it for this post. Keep practicing and have fun. Leave your comments if any.