Adds k8s/security/iam/authentik-provision-job.yaml - a PostSync hook Job
(reruns every ArgoCD sync via hook-delete-policy: BeforeHookCreation) that
replaces the never-migrated setup_talos_iam.sh / provision_oidc.py workflow
(both referenced helmfile + a Python script that no longer exists in this
repo - OAuth was never actually provisioned since the ArgoCD migration).
Idempotently creates:
- Custom 'groups' OAuth2 scope mapping (Authentik doesn't ship one by
default; required for ArgoCD's RBAC groups claim and Grafana's
role_attribute_path, both of which read a groups claim from the token).
- Groups: homelab-admins (is_superuser), grafana-admins.
- User 'rock', member of both groups above - gets full Authentik superuser
access, ArgoCD role:admin via the existing
RBAC policy in argocd-values.yaml, and
Grafana Admin role via role_attribute_path. Password generated once,
stored in iam/rock-credentials (never rotated on re-run).
- OAuth2 providers + Applications for grafana, minio, forgejo, argocd.
Client secrets read from existing Secrets (grafana-oidc, minio-oidc) or
generated once and written out (forgejo-oidc, argocd's oidc-secret).
- PolicyBinding of homelab-admins -> every Application, guaranteeing rock
access regardless of each app's default visibility.
Also fixes forgejo-values.yaml: oauth2.CLIENT_ID was set but CLIENT_SECRET
was missing entirely (oauth2 login could never have worked). Added via
extraEnv -> GITEA__oauth2__CLIENT_SECRET sourced from the new forgejo-oidc
Secret, since the oauth2: values map can't reference a Secret inline.
RBAC: dedicated ServiceAccount + ClusterRole (secrets get/list/create/update/
patch only) bound via namespace-scoped RoleBindings in iam/cicd/argocd/
logging/storage - the only 5 namespaces this job ever touches, and the only
resource type it ever touches.
NOTE: MinIO's OIDC env vars were removed from minio-tenant.yaml earlier
(blocked IAM init because the provider/app didn't exist yet -> 404 on
discovery). Now that this job creates them, re-adding MinIO's OIDC config is
a safe follow-up in a separate change.