usage

node-annotator

node-annotator queries current CPU & memory utilization of the nodes using Prometheus deployed in the Kubernetes Cluster. Please set these values in node-annotator.yaml to collect performance metrics into node resources

	PROMETHEUS_IP_ADDRESS
	PROMETHEUS_PORT (default is 9090)
	NODE_EXPORTER_PORT (default is 8445)

How to get the Prometheus IP address: Run the following command where monitoring-prometheus-xxxxx must be the correct prometheus pod name

kubectl get pods monitoring-prometheus-xxxxx -n=kube-system -o wide

How to get the Prometheus port number

kubectl get svc -n kube-system | grep monitoring-prometheus

How to get the Node Exporter port number

kubectl get svc -n kube-system | grep monitoring-prometheus-nodeexporter 

Instructions

1. buid a docker image

$ docker build . -t node-annotator:1.13.5

2. push image into image repository (e.g. sample push to https://hub.docker.com)

$ docker push myrepository/node-annotator:1.13.5

3. deploy node-annotator in kube-system namespace

$ kubectl create -f node-annotator.yaml