keep/INTEGRATION.md

Incorporating keep into an existing deploy setup

Concrete, by deploy pattern rather than by naming specific projects — the shape of the fit depends on how a project currently gets its config onto a target machine, not on what the project is.

The general shape

Wherever a deploy script or a manually-maintained .env exists today, the change is the same: replace "assume .env is already sitting there, hand-copied at some point" with a keep pull at the top of the script.

# before — a deploy script assumes .env already exists on this machine
set -euo pipefail
source .env   # or docker-compose reads it directly

# after
set -euo pipefail
keep pull <project>/<env> --out .env

The one-time setup cost per machine: keep identity init once, send the printed public key to whoever runs keep recipient add, then keep identity set-id <id> with what comes back. After that, every future deploy from that machine just works — no more "wait, what's the DB password again" when setting up a new box.

A deploy identity should almost always be granted read-only access (keep grant <vault> <deploy-recipient-id> --read-only) — it only ever needs to pull, and a read-only grant means a compromised deploy box can't also rotate the vault or add itself more recipients.

Pattern: several docker-compose projects on one or more VPSes

The common shape once more than one or two projects are on keep: each project lives in its own directory on the VPS (/opt/docker/<project>/docker-compose.yml), and "deploy" means pulling that project's env and running docker compose up -d in its directory. scripts/deploy.sh in this repo is a small generic wrapper for exactly that:

./deploy.sh myapp              # pulls myapp/production, runs compose in /opt/docker/myapp
./deploy.sh myapp staging      # pulls myapp/staging instead
DEPLOY_ROOT=/srv/apps ./deploy.sh myapp   # different project root

One-time setup per VPS: keep identity init on that machine, register its public key with keep recipient add, keep identity set-id, then grant it read-only access to each project vault it deploys (keep grant <project>/production <vps-recipient-id> --read-only). After that, ./deploy.sh <project> is the whole deploy step — no .env hand-copied onto the box first.

For "which machine can deploy which project," keep overview (admin) prints every vault and every recipient's access in one screen — the thing to reach for instead of checking each vault's grants one at a time.

Pattern: docker-compose reading a local .env

A common shape — docker compose up -d reads environment: values from a .env file sitting next to docker-compose.yml on the deploy machine, hand-maintained and containing real secrets.

keep pull myapp/production --out .env
docker compose up -d

No code changes needed in the target project — keep only changes how the .env file gets there, not what reads it. This is the easiest category to retrofit.

Pattern: cross-compile + scp + SSH-restart deploy scripts

A shape where a deploy script builds a binary locally, ships it to a VPS, and restarts a service over SSH — reading a local .env next to the script for things like shared secrets that shouldn't be hardcoded or re-typed on every invocation.

keep pull myapp/production --out .env
set -a && source .env && set +a
# ...rest of the deploy script unchanged

Same retrofit as the docker-compose case, just applied before whatever build/ship step already exists.

Pattern: a plaintext config file served to a browser

Not every config.js/similar file that looks like environment config actually holds secrets — some of it is public-by-design (an API base URL, a feature flag) that's explicitly meant to be visible to anyone loading the page. keep solves a confidentiality problem; a file with nothing confidential in it doesn't have one. Worth checking this distinction before wiring keep into anything — retrofitting a non-secret config file would be solving a problem that file doesn't have.

A vault server's own configuration

Whatever runs keep itself needs its own ADMIN_PASSWORD to be a real, manually-set secret on its own host — it can't bootstrap its own trust root by pulling itself from itself. This is the same "root of trust starts somewhere unmanaged" fact every secrets system has (Vault's own unseal keys aren't stored in Vault either). Not a gap, just worth being explicit about: keep's own deploy stays on a plain .env/ docker-compose.yml environment variables.

New projects going forward

The actual best use case isn't retrofitting existing deploys — it's never having the "hand-reconstruct a .env from memory" moment for a new deploy target in the first place. For whatever gets built next: register its production host as a keep recipient as part of first setup, write the deploy script to keep pull from day one, and the annoyance this was built to fix never has a chance to happen.