The purpose of this application is to provide capability to scale cluster up/down in case of need. This application supports currently two use-cases:
- if kops instancegroup minsize is larger than current instances in openstack -> scale up
- if kops instancegroup maxsize is smaller than current instances in openstack -> scale down
This application will detect the need of change by running kops update cluster <cluster>. Scaling means that this application will execute kops update cluster <cluster> --yes under the hood.
This application makes it possible to use kops rolling-update <cluster> command in openstack kops.
Provide autoscaling capability to kops openstack
Usage:
kops-autoscaling-openstack [flags]
Flags:
--access-key string S3 access key (default "test")
--custom-endpoint string S3 custom endpoint
-h, --help help for kops-autoscaling-openstack
--name string Name of the kubernetes kops cluster (default "")
--secret-key string S3 secret key (default "")
--sleep int Sleep between executions (default 45)
--state-store string KOPS State store (default "")
Prometheus metrics are automatically exposed in port 2112. These metrics contains information about current Kops cluster OpenStack instances.
Example:
# HELP openstack_instance Openstack instance
# TYPE openstack_instance gauge
openstack_instance{id="18b8451c-a7f0-4d26-b251-79080ff2518c",name="nodes-1-test-k8s-local",status="ACTIVE"} 1
openstack_instance{id="1f8f641f-2f95-4f42-bc69-70fbb9a7eed0",name="nodes-2-test-k8s-local",status="ACTIVE"} 1
...
Kops needs its bindata to be compiled and copied under vendor folder.
make copybindata
make ensure
See Examples
Create secrets, set env variables that you usually use when doing things with kops.
Make issues/PRs
This binary do have pprof debugging options available in localhost:6060/debug/pprof/ by default.
When this binary is executed inside kubernetes cluster, port-forward that port to your localhost and start debugging.
Command for that is kubectl port-forward <pod> 6060:6060