prole/etc/init_grafana_oauth_prole.sh
chrisfu 1892e137c1 feat(infra): replace GitLab with Gitea on git.prole.org
- Remove GitLab hostname/storage config from k3s.cfg; GitLab is gone.
- Update GITEA_HOSTNAME git-internal → git.prole.org
- Fix MONITORING_STORAGE_CLASS local-path → merlin-local-iscsi-prometheus
- Kong: route git.prole.org → gitea-http.gitea:3000
- Add svc-knoe-ingress.yaml as source-of-truth for the prole ingress (was
  missing; live object named svc-knoe-ingress, routes git.prole.org through
  Traefik → Kong → Gitea)
- DNS: add git.prole.org A record → 73.15.20.166 (public front-door)
- monitoring/kps-values-k3s.yaml: fix storage class for Prometheus/Alertmanager

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-07 01:25:32 -04:00

101 lines
4.0 KiB
Bash

#!/usr/bin/env bash
# init_grafana_oauth_prole.sh
#
# Bootstrap the Google-OAuth secret for Grafana on the prole.org k3s homelab
# cluster. Companion to the knoe.dev version (init_grafana_oauth.sh) but uses
# prole.org GCP project credentials and targets the k3s kubecontext.
#
# Creates the grafana-google-oidc Secret in the monitoring namespace, which
# kps-grafana mounts via envFromSecret to get GF_AUTH_GOOGLE_CLIENT_ID and
# GF_AUTH_GOOGLE_CLIENT_SECRET for its auth.google sign-in flow.
#
# Auth model (monitoring/kps-values-k3s.yaml):
# - Kerberos/knoe-auth users auto-login via auth.proxy (X-WEBAUTH-USER).
# - chrisfu@prole.org (and any future @prole.org Workspace user) signs in
# with the Google button on the Grafana login page.
# - chrisfu@prole.org → Admin; all other @prole.org users → Editor.
#
# Usage:
# ./etc/init_grafana_oauth_prole.sh
#
# Env vars (resolved from etc/secrets/* if not set in the shell):
# GRAFANA_GOOGLE_CLIENT_ID ← from etc/secrets/grafana-google-oidc-client-id-prole
# GRAFANA_GOOGLE_CLIENT_SECRET ← from etc/secrets/grafana-google-oidc-client-secret-prole
#
# Optional:
# K3S_KUBECONTEXT (default: $KUBECONTEXT then ambient)
# NAMESPACE (default: monitoring)
#
# Pre-reqs:
# - OAuth 2.0 Web Application client created in the prole.org GCP project:
# Authorized JS origins: https://svc.prole.org
# Authorized redirect URI: https://svc.prole.org/grafana/login/google
# Consent screen: Internal (prole.org Workspace)
# Scopes: openid, email, profile
# See deploy/gcp/gke/grafana-google-oidc-secret-prole.example.yaml for details.
# - Client ID and secret saved (chmod 0600) to:
# etc/secrets/grafana-google-oidc-client-id-prole
# etc/secrets/grafana-google-oidc-client-secret-prole
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
MANIFEST_DIR="$REPO_ROOT/deploy/gcp/gke"
NAMESPACE="${NAMESPACE:-monitoring}"
KCTX="${K3S_KUBECONTEXT:-${KUBECONTEXT:-}}"
if [[ -n "$KCTX" ]]; then
KCTX_FLAG=(--context="$KCTX")
else
KCTX_FLAG=()
fi
log() { printf "[%s] %s\n" "$(date +%H:%M:%S)" "$*"; }
die() { log "ERROR: $*" >&2; exit 1; }
resolve_secret() {
local var="$1" file="$2" val="${!1:-}"
if [[ -z "$val" && -f "$REPO_ROOT/etc/secrets/$file" ]]; then
val="$(cat "$REPO_ROOT/etc/secrets/$file")"
fi
if [[ -z "$val" ]]; then
die "missing $var (set the env var, or save the value into etc/secrets/$file)"
fi
printf '%s' "$val"
}
for tool in kubectl envsubst; do
command -v "$tool" >/dev/null 2>&1 || die "required tool not found: $tool"
done
GRAFANA_GOOGLE_CLIENT_ID="$(resolve_secret GRAFANA_GOOGLE_CLIENT_ID grafana-google-oidc-client-id-prole)"
GRAFANA_GOOGLE_CLIENT_SECRET="$(resolve_secret GRAFANA_GOOGLE_CLIENT_SECRET grafana-google-oidc-client-secret-prole)"
export GRAFANA_GOOGLE_CLIENT_ID GRAFANA_GOOGLE_CLIENT_SECRET
SECRET_TMPL="$MANIFEST_DIR/grafana-google-oidc-secret-prole.example.yaml"
[[ -f "$SECRET_TMPL" ]] || die "missing manifest: $SECRET_TMPL"
log "==> grafana google-oauth bootstrap (prole.org / k3s)"
log " namespace : $NAMESPACE"
log " kubectx : ${KCTX:-<ambient>}"
log "Applying grafana-google-oidc Secret ..."
envsubst '${GRAFANA_GOOGLE_CLIENT_ID} ${GRAFANA_GOOGLE_CLIENT_SECRET}' \
< "$SECRET_TMPL" \
| kubectl "${KCTX_FLAG[@]}" -n "$NAMESPACE" apply -f -
log "==> grafana google-oauth secret applied."
echo ""
echo " Next steps:"
echo " 1. Helm upgrade kube-prometheus-stack with the k3s values:"
echo " helm upgrade --reuse-values kps prometheus-community/kube-prometheus-stack \\"
echo " --namespace $NAMESPACE \\"
echo " -f $REPO_ROOT/monitoring/kps-values-k3s.yaml"
echo " 2. Restart grafana-proxy to pick up the updated configmap:"
echo " kubectl rollout restart deployment/knoe-grafana-proxy -n $NAMESPACE"
echo " 3. Browser-test: https://svc.prole.org/grafana/login → Google sign-in button"
echo " present; Kerberos users still auto-login via X-WEBAUTH-USER."
echo ""