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spindle/secrets: add a readme for openbao setup #387

merged
opened by
anirudh.fi 4 months ago targeting master from push-mzsvpkottnnt
Signed-off-by: Anirudh Oppiliappan anirudh@tangled.sh
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+130
docs
spindle
openbao.md
+130
docs/spindle/openbao.md
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       # spindle secrets with openbao

     

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       This document covers setting up Spindle to use OpenBao for secrets

     

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       management instead of the default SQLite backend.

     

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       ## installation

     

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       Install OpenBao from nixpkgs:

     

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       ```bash

     

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       nix-env -iA nixpkgs.openbao

     

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       ```

     

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       ## local development setup

     

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       Start OpenBao in dev mode:

     

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       ```bash

     

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       bao server -dev

     

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       ```

     

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       This starts OpenBao on `http://localhost:8200` with a root token. Save

     

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       the root token from the output -- you'll need it.

     

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       Set up environment for bao CLI:

     

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       ```bash

     

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       export BAO_ADDR=http://localhost:8200

     

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       export BAO_TOKEN=hvs.your-root-token-here

     

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       ```

     

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       Create the spindle KV mount:

     

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       ```bash

     

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       bao secrets enable -path=spindle -version=2 kv

     

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       ```

     

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       Set up AppRole authentication:

     

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       Create a policy file `spindle-policy.hcl`:

     

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       ```hcl

     

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       path "spindle/data/*" {

     

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         capabilities = ["create", "read", "update", "delete", "list"]

     

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       }

     

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       path "spindle/metadata/*" {

     

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         capabilities = ["list", "read", "delete"]

     

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       }

     

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       path "spindle/*" {

     

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         capabilities = ["list"]

     

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       }

     

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       ```

     

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       Apply the policy and create an AppRole:

     

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       ```bash

     

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       bao policy write spindle-policy spindle-policy.hcl

     

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       bao auth enable approle

     

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       bao write auth/approle/role/spindle \

     

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           token_policies="spindle-policy" \

     

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           token_ttl=1h \

     

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           token_max_ttl=4h

     

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       ```

     

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       Get the credentials:

     

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       ```bash

     

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       bao read auth/approle/role/spindle/role-id

     

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       bao write -f auth/approle/role/spindle/secret-id

     

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       ```

     

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       Configure Spindle:

     

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       Set these environment variables for Spindle:

     

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       ```bash

     

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       export SPINDLE_SERVER_SECRETS_PROVIDER=openbao

     

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       export SPINDLE_SERVER_SECRETS_OPENBAO_ADDR=http://localhost:8200

     

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       export SPINDLE_SERVER_SECRETS_OPENBAO_ROLE_ID=your-role-id-from-above

     

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       export SPINDLE_SERVER_SECRETS_OPENBAO_SECRET_ID=your-secret-id-from-above

     

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       export SPINDLE_SERVER_SECRETS_OPENBAO_MOUNT=spindle

     

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       ```

     

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       Start Spindle:

     

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       Spindle will now use OpenBao for secrets storage with automatic token

     

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       renewal.

     

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       ## verifying setup

     

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       List all secrets:

     

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       ```bash

     

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       bao kv list spindle/

     

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       ```

     

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       Add a test secret via Spindle API, then check it exists:

     

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       ```bash

     

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       bao kv list spindle/repos/

     

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       ```

     

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       Get a specific secret:

     

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       ```bash

     

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       bao kv get spindle/repos/your_repo_path/SECRET_NAME

     

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       ```

     

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       ## how it works

     

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       - Secrets are stored at `spindle/repos/{sanitized_repo_path}/{secret_key}`

     

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       - Each repository gets its own namespace

     

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       - Repository paths like `at://did:plc:alice/myrepo` become

     

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         `at_did_plc_alice_myrepo`

     

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       - The system automatically handles token renewal using AppRole

     

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         authentication

     

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       - On shutdown, Spindle cleanly stops the token renewal process

     

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       ## troubleshooting

     

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       **403 errors**: Check that your BAO_TOKEN is set and the spindle mount

     

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       exists

     

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       **404 route errors**: The spindle KV mount probably doesn't exist - run

     

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       the mount creation step again

     

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       **Token expired**: The AppRole system should handle this automatically,

     

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       but you can check token status with `bao token lookup`