Performing Rolling Updates in Kubernetes Deployments
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Overview
Learn how to perform rolling updates in Kubernetes Deployments, allowing for zero-downtime updates. This guide outlines the steps for updating a Deployment while ensuring continuous service availability.
Note
Before proceeding, ensure you have a basic understanding of Kubernetes Deployments and Services. Visit Kubernetes Documentation for more information.
Steps for a Rolling Update
Rolling updates replace old Pods with new ones, seamlessly updating your application without downtime.
1. Initiate the Rolling Update
Start by updating the Deployment's pod template, typically by changing the image version.
Example:
2. Monitor the Rollout
Check the status of the update to ensure it's progressing correctly.
3. Undo the Update if Needed
If problems arise during the update, you can revert to the previous state.
Tip
Always test updates in a staging environment and monitor the deployment closely during the rollout. Be prepared to rollback if any issues are detected. Performing Rolling Updates in Kubernetes Deployments
Conclusion
Rolling updates in Kubernetes provide a robust mechanism for updating applications without service interruption. By following these steps, you can maintain high availability while deploying new versions or configurations.