aws-subnet-available-ip-collector

Collect number of available IPs per aws subnet and Send collected metrics to Pushgateway

TODO

• Support helm chart install
• collect ips from all subnet if user not set filter.tags
• Support Multi VPC?
• Configure AWS credentials more safely
• Implement api call throttling to avoid rate limit error

Install

• Clone git

git clone https://github.com/GeunjeLEE/aws-subnet-available-ip-collector.git

• Move to directory

cd aws-subnet-avilable-ip-collector

• Config collector

vim kubernetes/configmap.yaml

configure	description	default	etc
credentials.aws_access_key_id	aws_access_key_id	-	Need AmazonVPCReadOnlyAccess policy Need to encrypt with base64
credentials.aws_secret_access_key	aws_secret_access_key	-	Need AmazonVPCReadOnlyAccess policy Need to encrypt with base64
credentials.aws_region_name	AWS Region	ap-northeast-2
push_gateway_endpoint	Endpoint of prometheus-pushgateway	localhost:0901	-
filters.vpc_id	vpc_id of collecting target subnet	-
filters.tags	tag to subnet filtering	-

apiVersion: v1
kind: ConfigMap
metadata:
  name: aws-subnet-available-ip-collector-conf
data:
  config.yaml: |
    credentials:
      aws_access_key_id: base64(<AWS_ACCESS_KEY_ID>
      aws_secret_access_key: base64(<AWS_SECRET_ACCESS_KEY>)
      #aws_region_name: <AWS_REGION_NAME> # default is ap-northeast-2
    push_gateway_endpoint: localhost:9091
    filters:
      vpc_id: <vpc_id>
      tags:
        key: value

• Deploy kubernetes manifests

kubectl apply -f kubernetes/configmap.yaml
kubectl apply -f kubernetes/deployment.yaml

Set Grafana dashboard

Create panel and just Set the metric name to available_ip_count

Delete

kubectl delete -f kubernetes/configmap.yaml
kubectl delete -f kubernetes/deployment.yaml