Container Service for Kubernetes (ACK) allows you to upgrade Knative components. You can use Knative Serving to manage serverless applications. This enables automatic scaling for pods where serverless applications are deployed based on Knative events and user requests. If no workload is processed, the number of pods is scaled to zero. This topic describes how to upgrade Knative Serving.
Prerequisites
- Knative Serving is deployed. For more information, see Deploy a Knative component.
- The Kubernetes version is 1.15.0 or later.
- Only Knative Serving 0.11.0 supports component upgrades.
Note We recommend that you upgrade Knative Serving during off-peak hours.
Background information
Knative Serving 0.14.0 provides the following new features:
- By default, a minimum of 20 latest Knative Service revisions are retained. The default retention period is 48 hours.
- Supports highly reliable subcomponents, such as controllers and Horizontal Pod Autoscaler (HPA).