node-tagger

Overview

node-tagger is a Kubernetes operator that applies specified tags to all aws nodes of the cluster.

Deployment

Prerequisites

The controller requires AWS credentials to be set before deploying it. This is accomplished by creating a secret with name aws-credentials in the controller namespace with the following keys:

• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY

For example running the following will create an appropriate secret in the node-tagger namespace:

kubectl create secret generic aws-credentials --from-literal=AWS_ACCESS_KEY_ID=access_key --from-literal=AWS_SECRET_ACCESS_KEY=secret_access_key --namespace=node-tagger

Required IAM permissions

The operator requires ec2:CreateTags and ec2:DescribeInstance permissions for the nodes that we are going to tag

Deploy the operator

Deploy the operator dependencies:

kubectl apply -f deploy/service_account.yaml -n node-tagger
kubectl apply -f deploy/role.yaml -n node-tagger
kubectl apply -f deploy/role_binding.yaml -n node-tagger

Deploy the operator:

kubectl apply -f deploy/deployment.yaml -n node-tagger

Deploying via helm chart

Without existing credentials secret

helm upgrade --install node-tagger https://github.com/ouzi-dev/node-tagger/releases/download/${VERSION}/node-tagger-${VERSION}.tgz \
    -n node-tagger \
    --set awsCredentials.create=true \
    --set awsCredentials.awsAccessKeyId=access_key \
    --set awsCredentials.awsSecretAccessKey=secret_access_key \
    --set awsCredentials.awsRegion=region \
    --set tagsToApply[0].name=tag1,tagsToApply[0].value=value1

Where ${VERSION} is the version you want to install

With existing credentials secret

helm upgrade --install node-tagger https://github.com/ouzi-dev/node-tagger/releases/download/${VERSION}/node-tagger-${VERSION}.tgz \
    -n node-tagger \
    --set awsCredentials.secretName=aws-credentials \
    --set tagsToApply[0].name=tag1,tagsToApply[0].value=value1

Where ${VERSION} is the version you want to install

Without using a secret (For example using a EKS service account)

helm upgrade --install node-tagger https://github.com/ouzi-dev/node-tagger/releases/download/${VERSION}/node-tagger-${VERSION}.tgz \
    -n node-tagger \
    --set awsCredentials.useSecret=false \
    --set tagsToApply[0].name=tag1,tagsToApply[0].value=value1 \
    --set serviceAccount.annotations."eks\.amazonaws\.com/role-arn"="arn:aws:iam::123456789:role/my-role-name"

Where ${VERSION} is the version you want to install