linode-cleanup.sh

#!/bin/bash
# Cleanup dangling resources
# Nodebalancers
linode-cli nodebalancers list --format id,label --json | jq -r '.[] | "\(.id) \(.label)"' | while read -r id label; do
  all_down=true

  for config_id in $(linode-cli nodebalancers configs-list "$id" --format id --json | jq -r '.[].id'); do
    if ! linode-cli nodebalancers nodes-list "$id" "$config_id" --format status --json | jq -e 'all(.[]; .status == "DOWN")' > /dev/null; then
      all_down=false
      break
    fi
  done

  if [ "$all_down" = true ]; then
    echo "NodeBalancer '$label' (ID: $id) has all backend nodes DOWN."
    # Uncomment the next line to actually delete them
    linode-cli nodebalancers delete "$id"
  fi
done
# Unused Volumes
linode-cli volumes list --json | jq -r '.[] | select(.linode_id == null) | .id' | xargs -I {} linode-cli volumes delete {}

# Firewalls