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terraform-rancher/README.md
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ci: mint rancher token from the vault rancher engine
Retire the static 90-day admin token in kv/service/terraform/rancher; the
vault rancher engine and the read grant on rancher/creds/ci are live.

- Makefile: vault_env reads TF_VAR_rancher_token from rancher/creds/ci
- README: document the ephemeral 1h credential model
2026-08-30 14:12:23 +10:00

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# terraform-rancher
Terraform configuration for managing Rancher (rancher.k8s.syd1.au.unkin.net)
authentication via the [rancher2](https://registry.terraform.io/providers/rancher/rancher2)
provider. Mirrors the `terraform-authentik` pattern.
## Managed Resources
- **Keycloak(OIDC) auth config** — Authentik OIDC login for Rancher.
## Configuration
`config/keycloakoidc.yaml` defines the auth provider. The OAuth client secret is
read from Vault (kv-v2) — the same secret Authentik sets on its `rancher`
provider — and is never committed.
`access_mode: unrestricted` lets any authenticated Authentik user log in; Rancher
roles are granted to users/groups separately. This avoids locking the admin out
when the provider is first enabled.
## Usage
```sh
make plan # init + plan
make apply # init + plan + apply
make format # fmt tofu + terragrunt hcl
```
### Authentication
The rancher2 provider needs a Rancher API token, minted on demand by the Vault
Rancher secrets engine at `rancher/creds/ci`. The token is ephemeral (1h lease)
and Vault revokes it in Rancher when the lease expires, so nothing needs
rotating.
Set `VAULT_ROLEID` for local AppRole auth, or `VAULT_AUTH_METHOD=kubernetes`
for CI (Woodpecker).