added gcp_ansible_create_credential.sh

gcp/gcp_ansible_create_credential.sh

@@ -0,0 +1,85 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2024-02-23 17:50:33 +0000 (Fri, 23 Feb 2024)
+#
+#  https://github.com/HariSekhon/DevOps-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,SC1091
+. "$srcdir/lib/gcp.sh"
+
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Creates an Ansible service account for the Ansible GCP playbook inventory plugin, in the current or specified GCP
+project, then creates and downloads the credentials json and even prints the command to configure your environment
+to start using Ansible immediately
+
+export GOOGLE_CREDENTIALS=\$HOME/.gcloud/\$name-\$project-credential.json
+
+The following optional arguments can be given:
+
+- service account name prefix   (default: \$USER-ansible)
+- credential file path          (default: \$HOME/.gcloud/\$name-\$project-credential.json)
+- project                       (default: \$CLOUDSDK_CORE_PROJECT or gcloud config's currently configured project setting core.project)
+
+Idempotent - safe to re-run, will skip service accounts and keyfiles that already exist
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="[<name> <credential.json> <project>]"
+
+help_usage "$@"
+
+#min_args 1 "$@"
+
+name="${1:-$USER-ansible}"
+
+# XXX: sets the GCP project for the duration of the script for consistency purposes (relying on gcloud config could lead to race conditions)
+project="${3:-${CLOUDSDK_CORE_PROJECT:-$(gcloud config list --format='get(core.project)')}}"
+
+not_blank "$project" || die "ERROR: no project specified and \$CLOUDSDK_CORE_PROJECT / GCloud SDK config core.project value not set"
+export CLOUDSDK_CORE_PROJECT="$project"
+
+keyfile="${2:-$HOME/.gcloud/$name-$project-credential.json}"
+
+gcp_create_serviceaccount_if_not_exists "$name" "$project" "$USER's service account for Ansible deployments"
+
+service_account="$name@$project.iam.gserviceaccount.com"
+
+gcp_create_credential_if_not_exists "$service_account" "$keyfile"
+
+echo "Granting Owner permissions to service account '$service_account' on project '$project'"
+# some projects may require --condition=None in non-interactive mode
+gcloud projects add-iam-policy-binding "$project" --member="serviceAccount:$service_account" --role=roles/owner --condition=None >/dev/null
+
+keyfile="$(readlink -e "$keyfile")"
+
+# https://docs.ansible.com/ansible/latest/collections/google/cloud/gcp_compute_inventory.html
+#
+#   either
+#
+#       GCE_CREDENTIALS_FILE_PATH
+#   or
+#       GCP_SERVICE_ACCOUNT_FILE
+#
+#   optional
+#
+#       GCP_SERVICE_ACCOUNT_FILE
+echo
+echo "Set this in your environment to use Ansible now:"
+echo
+echo "export GCE_CREDENTIALS_FILE_PATH=$keyfile"
+echo