zhangsean/vpa-admission-controller
Mirror of k8s.gcr.io/autoscaling/vpa-admission-controller.
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zhangsean/vpa-admission-controller repository overview
k8s-autoscaling-mirror
Mirror of k8s.gcr.io/autoscaling/.
| gcr.io | docker hub |
|---|---|
| k8s.gcr.io/autoscaling/vpa-updater:0.9.2 | zhangsean/vpa-updater:0.9.2 |
| k8s.gcr.io/autoscaling/vpa-recommender:0.9.2 | zhangsean/vpa-recommender:0.9.2 |
| k8s.gcr.io/autoscaling/vpa-admission-controller:0.9.2 | zhangsean/vpa-admission-controller:0.9.2 |
Usage
Prerequisites
kubectlshould be connected to the cluster you want to install VPA in.- The metrics server must be deployed in your cluster. Read more about Metrics Server.
- If you already have another version of VPA installed in your cluster, you have to tear down the existing installation first with:
./hack/vpa-down.sh
Install
# Set env REGISTRY and TAG
export REGISTRY=zhangsean
export TAG=0.9.2
# Get autoscaling scripts
git clone https://github.com/kubernetes/autoscaler.git
cd vertical-pod-autoscaler
# To print YAML contents with all resources that would be understood by kubectl diff|apply|... commands, you can use
./hack/vpa-process-yamls.sh print
# To install VPA
./hack/vpa-up.sh
# Check if all system components are running:
kubectl --namespace=kube-system get pods|grep vpa
# The above command should list 3 pods (recommender, updater and admission-controller) all in state Running.
# Check if the system components log any errors. For each of the pods returned by the previous command do:
kubectl --namespace=kube-system logs [pod name]| grep -e '^E[0-9]\{4\}'
# Check that the VPA Custom Resource Definition was created:
kubectl get customresourcedefinition|grep verticalpodautoscalers
Quick start
A simple way to check if Vertical Pod Autoscaler is fully operational in your cluster is to create a sample deployment and a corresponding VPA config:
kubectl create -f examples/hamster.yaml
Example VPA configuration:
apiVersion: autoscaling.k8s.io/v1
kind: VerticalPodAutoscaler
metadata:
name: my-app-vpa
spec:
targetRef:
apiVersion: "apps/v1"
kind: Deployment
name: my-app
updatePolicy:
updateMode: "Auto"
To see VPA config and current recommended resource requests run:
kubectl describe vpa my-app-vpa
Tear down
Note that if you stop running VPA in your cluster, the resource requests for the pods already modified by VPA will not change
Tear down VPA components:
./hack/vpa-down.sh
Goldilocks
By using the kubernetes vertical-pod-autoscaler in recommendation mode, we can see a suggestion for resource requests on each of our apps. This tool creates a VPA for each deployment in a namespace and then queries them for information.
Installation
helm repo add fairwinds-stable https://charts.fairwinds.com/stable
helm install goldilocks --namespace kube-system fairwinds-stable/goldilocks
# check pods status
kubectl get po -n kube-system | grep goldilocks
# Enable goldilocks VPA in namespace kube-system
kubectl label ns kube-system goldilocks.fairwinds.com/enabled=true
# After that you will see VPA objects in that namespace.
kubectl get vpa -n kube-system
# Get VPA recommended for nginx-ingress-controller
kubectl describe vpa -n kube-system nginx-ingress-controller
Viewing the Dashboard
The default installation creates a ClusterIP service for the dashboard. You can access via ingress:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: goldilocks-dashboard
namespace: kube-system
spec:
rules:
- host: goldilocks.example.com
http:
paths:
- backend:
serviceName: goldilocks-dashboard
servicePort: 8080
Then open your browser to http://goldilocks.example.com
Once your VPAs are in place, you'll see recommendations appear in the Goldilocks dashboard:
More info
Tag summary
Content type
Image
Digest
Size
17.1 MB
Last updated
about 5 years ago
docker pull zhangsean/vpa-admission-controller