unkin-agent
ff2dff7af2
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## Why Engine plugin v0.2.0 added a `methods` field to arrstack roles, pinning a minted arrproxy key to a set of HTTP methods so a read-only integration can be handed a key that cannot write. The provider had no way to express it, so those roles could not be managed from `terraform-vault`. ## How - Adds an optional `methods` set attribute to `arrstack_secret_backend_role`, validated at plan time against `GET/HEAD/POST/PUT/PATCH/DELETE/OPTIONS` (upper case only, since the engine stores them upper-cased and a lower-case value would drift on every plan). - Always writes `methods`: the engine only clears an existing scope when the key is present, so an omitted key would leave a stale scope behind. - Reads an unrestricted role back as null rather than an empty set, so a config that omits `methods` shows no drift; a scope cleared out of band still surfaces as a diff. - Documents the attribute in the README and both example configs. - Tests cover the write mapping (null and populated), the read-back cases (absent/empty/null/cleared), and the plan-time validator. Dependency: engine plugin >= 0.2.0. Reviewed-on: #3 Co-authored-by: unkin-agent <unkin-agent@unkin.net> Co-committed-by: unkin-agent <unkin-agent@unkin.net>
terraform-provider-vault-secrets-arrstack
A Terraform/OpenTofu provider that manages the arrstack dynamic secrets engine
(vault-plugin-secrets-arrstack)
on HashiCorp Vault or OpenBao, so the engine's mount, config, and roles can be
driven declaratively (e.g. from terraform-vault). The engine mints short-lived
arrproxy API keys scoped to the arr apps (Sonarr, Radarr, Prowlarr).
Source address: artifactapi.k8s.syd1.au.unkin.net/terraform-unkin/vault-secrets-arrstack
(declare it under the local name arrstack, so its resources are arrstack_*).
Resources
| Resource | Manages |
|---|---|
arrstack_secret_backend |
Mounts the engine at a path and writes its config (arrproxy base URL, request timeout, seeded admin token, optional CA cert). |
arrstack_secret_backend_role |
A role: apps (subset of sonarr/radarr/prowlarr), optional methods (HTTP method scope), ttl, max_ttl. |
Usage
terraform {
required_providers {
arrstack = {
source = "artifactapi.k8s.syd1.au.unkin.net/terraform-unkin/vault-secrets-arrstack"
version = "0.1.0"
}
}
}
provider "arrstack" {
# address / token fall back to VAULT_ADDR / VAULT_TOKEN.
}
resource "arrstack_secret_backend" "arrstack" {
path = "arrstack"
base_url = "https://arrstack.unkin.net"
admin_token = var.arrproxy_admin_token
}
resource "arrstack_secret_backend_role" "all" {
backend = arrstack_secret_backend.arrstack.path
name = "all"
apps = ["sonarr", "radarr", "prowlarr"]
ttl = 60
max_ttl = 86400
}
# Read-only role: keys minted from it may only issue GET/HEAD.
resource "arrstack_secret_backend_role" "sonarr_ro" {
backend = arrstack_secret_backend.arrstack.path
name = "sonarr-ro"
apps = ["sonarr"]
methods = ["GET", "HEAD"]
ttl = 60
max_ttl = 86400
}
Notes
admin_tokenis write-only: Vault never returns it, so it is preserved in Terraform state and does not show drift.ca_certis likewise write-only and preserved; omit it to use the system trust store.- Writing
configmakes the engine authenticate against arrproxy as an admin, so a bad URL or token fails the apply. appsis required; entries must be a subset ofsonarr,radarr,prowlarr.methodsis optional and restricts a minted key to those HTTP methods; omitting it (or setting[]) leaves the key unrestricted. Entries must be upper case and a subset ofGET,HEAD,POST,PUT,PATCH,DELETE,OPTIONS— the engine stores them upper-cased, so a lower-case value would show permanent drift and is rejected at plan time. Requires engine pluginvault-plugin-secrets-arrstack>= 0.2.0.
Import
terraform import arrstack_secret_backend.arrstack arrstack
terraform import arrstack_secret_backend_role.all arrstack/roles/all
Development
make build # build the provider binary
make install # install into ~/.terraform.d/plugins for local use
make test # unit tests (race)
make package # build the release zip
Releases are tag-driven (make patch|minor|major): a Woodpecker pipeline builds
terraform-provider-vault-secrets-arrstack_<version>_linux_amd64.zip and PUTs it
to the artifactapi terraform registry
(.../api/v2/remotes/terraform-unkin/files/terraform-unkin/vault-secrets-arrstack/<file>),
which signs it server-side. Install it via the bare source address above.