update-nodegroups.sh

#!/bin/bash

# Get a list of all EKS clusters in the region
REGION=us-east-2
clusters=($(aws eks list-clusters --region ${REGION} --output json | jq -r '.clusters[]'))

# Loop through each cluster
for cluster in ${clusters[@]}; do
    # Get a list of all nodegroups in the cluster
    nodegroups=($(aws eks list-nodegroups --cluster-name $cluster --region ${REGION} --output json | jq -r '.nodegroups[]'))

    # skip if there are no node groups
    echo "checking for nodegroups in $cluster"
    if [[ ${#nodegroups[@]} -eq 0]]; then
        echo "No nodegroups found in cluster $cluster."
        continue
    fi

    # Loop through each nodegroup
    for nodegroup in ${nodegroups[@]}; do
        # Update the nodegroup
        echo "Updating nodegroup $nodegroup in cluster $cluster..."
        echo $nodegroup
        aws eks update-nodegroup-version --cluster-name ${cluster} --nodegroup-name ${nodegroup} --region $REGION || echo $?
    done
done