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83 lines
2.7 KiB
Bash
83 lines
2.7 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-09-04 10:55:43 +0100 (Fri, 04 Sep 2020)
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#
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# https://github.com/HariSekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# 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
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Loads given list of GCP Secret Manager secrets to a single Kubernetes secret
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Use the following command to see secrets you may want to combine and load to Kubernetes (eg. jwt-private-pem + jwt-public-pem):
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gcloud secrets list
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Loads to the current Kubernetes namespace since there is no namespace information in Google Secret Manager, so you may
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want to switch to the right namespace first (see kcd in .bash.d/kubernetes for a convenient way to persist this in your session)
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See Also:
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gcp_secrets_to_kubernetes.sh - for linear 1-to-1 secret auto-loading
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kubernetes_get_secret_values.sh - for checking what was auto-loaded into to a given kubernetes secret
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="<kubernetes_secret_name> <gcp_secret_1> [<gcp_secret_2> ...]"
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help_usage "$@"
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min_args 2 "$@"
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get_latest_version(){
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local secret="$1"
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gcloud secrets versions list "$secret" --filter='state = enabled' --format='value(name)' |
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sort -k1nr |
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head -n1
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}
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kubernetes_secret="$1"
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shift || :
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if kubectl get secret "$kubernetes_secret" &>/dev/null; then
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echo "WARNING: kubernetes secret '$kubernetes_secret' already exists, skipping creation..." >&2
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exit 1
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fi
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# auto base64 encodes the $value - you must base64 encode it yourself if putting it in via yaml
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kubectl_cmd="kubectl create secret generic '$kubernetes_secret' "
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for gcp_secret; do
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latest_version="$(get_latest_version "$gcp_secret")"
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value="$(gcloud secrets versions access "$latest_version" --secret="$gcp_secret")"
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# this is all really annoying because there is no right answer to this convention
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# because GCP Secret Manager won't let you use dots so mangle jwt-private-pem => jwt-private.pem
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#gcp_secret="$(perl -pe 's/[_-]pem$/.pem/' <<< "$gcp_secret")"
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# actually apps expect just private.pem and public.pem in the secret mounted directory
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if [[ "$gcp_secret" =~ -private-pem$ ]]; then
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gcp_secret="private.pem"
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elif [[ "$gcp_secret" =~ -public-pem$ ]]; then
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gcp_secret="public.pem"
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fi
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kubectl_cmd+=" --from-literal='$gcp_secret=$value'"
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done
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eval "$kubectl_cmd"
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