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DevOps-Bash-tools/gcp_find_orphaned_disks.sh

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#!/usr/bin/env bash
# vim:ts=4:sts=4:sw=4:et
#
# Author: Hari Sekhon
# Date: 2020-08-28 10:22:49 +0100 (Fri, 28 Aug 2020)
#
# https://github.com/HariSekhon/bash-tools
#
# License: see accompanying Hari Sekhon LICENSE file
#
# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
# https://www.linkedin.com/in/HariSekhon
#
set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck disable=SC1090
. "$srcdir/lib/utils.sh"
# shellcheck disable=SC2034,SC2154
usage_description="
Finds orphaned disks across all GCP Projects using GCloud SDK
This is done by finding disks in each project with no 'users' (instances attached)
Output format:
<project_id> <project_name> <disk_name>
"
# used by usage() in lib/utils.sh
# shellcheck disable=SC2034
usage_args=""
while read -r project_id project_name; do
gcloud compute disks list --format="table[no-heading](name,users)" --project "$project_id" |
while read -r disk users; do
[ -n "$users" ] && continue
printf '%s\t%s\t%s\n' "$project_id" "$project_name" "$disk"
done
done < <(gcloud projects list --format="value(project_id,name)")