@konfig.ts/sealed-secrets

Sealed Secrets backend for konfig.ts. Encrypts secret values with kubeseal at render time and emits a SealedSecret CR that only the in-cluster controller can decrypt — so the encrypted manifest is safe to commit to git.

Install

bun add @konfig.ts/sealed-secrets

Needs the kubeseal CLI on the machine that runs konfig build, plus the controller's public cert — resolved from certPath, else $KUBESEAL_CERT. Missing cert fails fast with KubesealCertMissing.

Usage

Bind a secret contract (Secret.define, from @konfig.ts/env) to the backend and give it a source for the plaintext to seal:

import { SecretSource } from "@konfig.ts/env"
import { Secret } from "@konfig.ts/k8s"
import { SealedSecrets } from "@konfig.ts/sealed-secrets"

const dbCreds = Secret.define({
  name: "db-creds",
  namespace: "prod",
  env: { url: "DATABASE_URL", password: "DATABASE_PASSWORD" }
})

const bound = Secret.bind({
  secret: dbCreds,
  backend: SealedSecrets.backend({ scope: "strict" }),
  source: SecretSource.fromConfig({
    keys: ["url", "password"],
    envName: (k) => `DB_${k.toUpperCase()}`
  })
})
// bound.manifest is the SealedSecret CR.

At render time konfig resolves the source to plaintext (held only in Redacted<string> in memory), builds a plain Secret, pipes it to kubeseal over stdin, and emits the returned SealedSecret. The plaintext never lands on disk.

Options

| Field | Default | Notes | | ---------- | ---------------- | ---------------------------------------------------------------------------------------------- | | scope | "strict" | strict = same name + namespace; namespace-wide = rename within ns; cluster-wide = any ns | | certPath | $KUBESEAL_CERT | path to the sealed-secrets controller's public cert |

Internals

Backends implement the SecretBackend<N, K, RequiresSource> contract from @konfig.ts/k8s; requiresSource: true makes source a compile-time requirement. See the Environment section of .docs/architecture.md.

Requirements

konfig.ts is built on Effect, currently a release candidate. Until Effect ships a stable 4.x, install a build from the rc line konfig.ts is built against:

• effect@^4.0.0-rc.111 — required by every package.
• @effect/platform-node@^4.0.0-rc.111 — required only when you call render() (the Node filesystem/subprocess entrypoint); manifest-only consumers can omit it (it is declared as an optional peer).

The range floats within the rc line on purpose: Effect's pre-release line makes breaking changes between builds, so a looser range surfaces as ERESOLVE install conflicts. It widens to ^4.x once Effect reaches a stable 4.x.