update-kubeconfig

#!/usr/bin/env bash

set -e

if [ "$#" -lt 1 ]
then
  echo "Usage: update-kubeconfig <aws profile> [cluster-name]"
  exit 1
fi

export AWS_PROFILE=$1

if [  "$#" -eq 2 ]
then
  CLUSTER_NAME=$2
else
  CLUSTERS=$(aws eks list-clusters --output json | jq .clusters[] -r)
  NUM_CLUSTERS=$(echo "$CLUSTERS" | grep -c '^')
  if [ $NUM_CLUSTERS -ne 1 ]
  then
    echo "Found more than one Kubernetes cluster. Please re-run with an explicit cluster name."
    echo "Clusters:"
    echo "$CLUSTERS"
    exit 1
  fi

  CLUSTER_NAME=$CLUSTERS
fi

aws eks update-kubeconfig --name $CLUSTER_NAME --alias $AWS_PROFILE