Kf Apps can be automatically scaled based on CPU usage. You can configure autoscaling limits for your Apps and the target CPU usage for each App instance. Kf automatically scales your Apps up and down in response to demand.

By default, autoscaling is disabled. Follow the steps below to enable autoscaling.

View Apps

You can view the autoscaling status for an App using the kf apps command. If autoscaling is enabled for an App, Instances includes the autoscaling status.

$ kf apps

Name   Instances              Memory  Disk  CPU
app1   4 (autoscaled 4 to 5)  256Mi   1Gi   100m
app2   1                      256Mi   1Gi   100m

Autoscaling is enabled for app1 with min-instances set to 4 and max-instances set to 5. Autoscaling is disabled for app2.

Update autoscaling limits

You can update the instance limits using the kf update-autoscaling-limits command.

kf update-autoscaling-limits app-name min-instances max-instances

Create autoscaling rule

You can create autoscaling rules using the kf create-autoscaling-rule command.

kf create-autoscaling-rule app-name CPU min-threshold max-threshold

Delete autoscaling rules

You can delete all autoscaling rules with the kf delete-autoscaling-rule command. Kf only supports one autoscaling rule.

kf delete-autoscaling-rules app-name

Enable and disable autoscaling

Autoscaling can be enabled by using enable-autoscaling and disabled by using disable-autoscaling. When it is disabled, the configurations, including limits and rules, are preserved.

kf enable-autoscaling app-name
kf disable-autoscaling app-name