Kops doesn't create aws autoscaling groups for cluster autoscaler addon

1
votes

I'm running kops on aws.

There is some documentation here about how to add the autoscaler to the cluster. https://github.com/kubernetes/kops/tree/master/addons/cluster-autoscaler

As far as I can tell kops doesn't create its own autoscaling groups and there doesn't seem to be any documentation on how to create an autoscaling group that will interact with the cluster.

I can follow all the existing documentation and I will end up with this error message Failed to update node registry: Unable to get first autoscaling.Group for "nodes.***redacted***"

is there something obvious I'm missing?

Thanks, Nathan

  1. What kops version are you running? The command kops version, will display this information.
    Version 1.8.0

  2. What Kubernetes version are you running? kubectl version will print the version if a cluster is running or provide the Kubernetes version specified as a kops flag.
    v1.8.6

  3. What cloud provider are you using?
    AWS

  4. What commands did you run? What is the simplest way to reproduce this issue?
    kubectl apply -f autoscale.yaml

  5. What happened after the commands executed?
    Failed to update node registry: Unable to get first autoscaling.Group for "nodes.***redacted***"

yaml file here https://gist.github.com/nburn42/6c94336574083be610efa911e06c7ae1

1
amazon-web-serviceskuberneteskops
kops does create its own autoscaling groups: github.com/kubernetes/kops/blame/master/docs/aws.md#L333. - Amit Kumar Gupta

1 Answers

0
votes

This is now false. Kops does create ASGs You possibily need to configure your cluster autoscaler using either :

  • autodiscover mode (using tags & IAM roles for the node running cluster autoscaler)
  • manual mode (you then list the ASGs names)

c.f. https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler/cloudprovider/aws/examples for a config sample