node_pools.sh

#!/bin/bash

set -eo pipefail

pools=("core" "batch" "system")
poolPrefix="worker-pool-"

for i in "${pools[@]}"
do
    poolName="${poolPrefix}${i}"
    echo "### $poolName ###" 
    output=`kubectl --context=active-prod get nodes --selector="kops.k8s.io/instancegroup=$poolName"`
    echo "$output"
    count=`echo "$output" | grep -v NAME | wc -l | sed -e 's/^[[:space:]]*//'`
    echo "Total: $count nodes"
    echo ""
    echo ""
done