docs+install: sweep deploy/start → castle apply

Update the README, AGENTS.md, install.sh, and docs/ for the converge
model: one `castle apply [name] [--plan]` replaces `deploy && start` and
the per-kind enable/disable/install/start/stop verbs. CLI references now
list apply + restart (the imperative bounce) + logs; recipes use
`castle apply`; "turn it off" is documented as `enabled: false` + apply.
install.sh's next-steps collapse to a single `castle apply`.

Verified: no retired-verb command instructions remain in any markdown;
install.sh syntax OK; live `castle apply --plan` reports converged;
doctor all-green; core 129 / cli 31 / api 59 pass.
This commit is contained in:
2026-07-02 11:54:31 -07:00
parent f422c1879d
commit 9abef4ac34
10 changed files with 79 additions and 76 deletions

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@@ -204,7 +204,7 @@ A service's env is exactly its `defaults.env` — castle injects nothing
implicitly. Values may use `${port}`/`${data_dir}`/`${name}`/`${secret:…}`
placeholders, which deploy resolves into the registry's flat `env`.
**`$CASTLE_HOME/artifacts/specs/registry.yaml`** (per-node, not in the repo, generated by `castle deploy`) — Node config:
**`$CASTLE_HOME/artifacts/specs/registry.yaml`** (per-node, not in the repo, generated by `castle apply`) — Node config:
```yaml
node:
@@ -228,7 +228,7 @@ deployed:
```
The node config says what's deployed *here* and with what concrete
values. `castle deploy` reads the spec from the repo, resolves the
values. `castle apply` reads the spec from the repo, resolves the
`defaults.env` placeholders and secrets, resolves binary paths,
and writes the registry. Systemd units and Caddyfile are then generated
from the registry — never from the spec directly.
@@ -280,7 +280,7 @@ programs on a single node and across multiple Castle nodes.
**MQTT topics:**
- `castle/{hostname}/registry` — retained JSON, full NodeRegistry.
Published on connect and after `castle deploy`.
Published on connect and after `castle apply`.
- `castle/{hostname}/status``"online"` (retained) / `"offline"` (LWT).
LWT ensures nodes are marked offline if they disconnect unexpectedly.
@@ -457,7 +457,7 @@ $CASTLE_HOME/ ← Config & artifacts (default ~/.castle)
├── code/ ← Program source (your programs)
│ └── <name>/
├── artifacts/
│ ├── specs/ ← Generated by `castle deploy`
│ ├── specs/ ← Generated by `castle apply`
│ │ ├── Caddyfile
│ │ └── registry.yaml ← Node config (what's deployed here)
│ └── content/ ← Built frontend assets
@@ -491,7 +491,7 @@ Castle's architecture parallels Erlang/OTP, mapped onto Unix:
| Application | Component (independent, self-contained) |
| Application resource file | Component spec in `castle.yaml` |
| Release config (sys.config) | Node config in `$CASTLE_HOME/artifacts/specs/registry.yaml` |
| Release assembly | `castle deploy` (spec + node config → runtime) |
| Release assembly | `castle apply` (spec + node config → runtime) |
| Supervisor | systemd (restart policies, ordering) |
| Process | Running service/worker/job |
| Application env | Env vars |
@@ -527,12 +527,12 @@ What exists today:
- **CLI** — `castle` command, installed via `uv tool install --editable cli/`
- **Three packages** — `castle-core` (models, config, generators),
`castle-cli` (commands), `castle-api` (HTTP API)
- **Source/runtime split** — `castle.yaml` (spec) → `castle deploy`
- **Source/runtime split** — `castle.yaml` (spec) → `castle apply`
`$CASTLE_HOME/artifacts/specs/registry.yaml` (node config). Systemd units and
Caddyfile generated from registry with fully resolved paths. No repo references
in runtime artifacts.
- **Explicit env with placeholders** — a deployment's env is exactly its
`defaults.env`; `castle deploy` resolves `${port}`/`${data_dir}`/`${name}`/
`defaults.env`; `castle apply` resolves `${port}`/`${data_dir}`/`${name}`/
`${secret:…}` into concrete values. No hidden convention injection.
- **Gateway** — Caddy on port 9000, Caddyfile generated from registry
- **API** — `castle-api` on port 9020, reads from registry (optional

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@@ -63,7 +63,7 @@ for tools/libraries.
at `/usr/local/bin/caddy` when `tls: acme`.
- Systemd user units at `~/.config/systemd/user/castle-*.service` (+ `.timer`);
the unit for program `X` is `castle-X.service`. Use drop-in `*.service.d/*.conf`
for extra env `castle deploy` shouldn't overwrite.
for extra env `castle apply` shouldn't overwrite.
- The `container` launcher resolves docker via `shutil.which("docker")` (preferred
over rootless podman on this box).
- Service data at `$CASTLE_DATA_DIR/<name>/`; secrets at `~/.castle/secrets/`

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@@ -122,7 +122,7 @@ origin — moving a service onto HTTPS changes its origin.
(§DNS). Verify: `dig +short <name>.<domain>` → the node's IP.
3. **Set `gateway.tls: acme`** (with `domain`/`acme_email`), plus the operational
prerequisites (below).
4. **Deploy & reload:** `castle deploy` regenerates the Caddyfile and reloads Caddy.
4. **Deploy & reload:** `castle apply` regenerates the Caddyfile and reloads Caddy.
5. **Update the app's origin allowlist** if it has one (§secure context).
## Operational prerequisites
@@ -142,7 +142,7 @@ a DNS token.
(`~/.castle/secrets/<TOKEN_NAME>`, scope: the DNS provider's "edit DNS records"
permission for your zone) and map it into the gateway service env in
`deployments/castle-gateway.yaml` (`defaults.env`), so Caddy reads it as
`{env.<TOKEN_NAME>}`. `castle deploy` warns if the domain, env var, or secret is
`{env.<TOKEN_NAME>}`. `castle apply` warns if the domain, env var, or secret is
missing.
- **`acme` — stage first.** Set `CASTLE_ACME_STAGING=1` at deploy to use Let's
Encrypt's staging CA (generous rate limits) while verifying issuance, then unset

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@@ -333,7 +333,7 @@ proxy: true # expose at <service-name>.<gateway.domain>
`public: true` additionally projects a proxied service to the public internet via a
Cloudflare tunnel, at **`<service-name>.<gateway.public_domain>`** (a separate zone,
so internal subdomain names stay out of public DNS). Defaults to `false` — public is
explicit — and **requires `proxy: true`**. `castle deploy` generates the cloudflared
explicit — and **requires `proxy: true`**. `castle apply` generates the cloudflared
ingress from the set of public services. Needs `gateway.public_domain` +
`gateway.tunnel_id` set and the `castle-tunnel` service running; see
@docs/tunnel-setup.md for the one-time setup.
@@ -467,7 +467,7 @@ Setup (the parts castle can't do for you):
env:
CLOUDFLARE_API_TOKEN: ${secret:CLOUDFLARE_API_TOKEN}
```
`castle deploy` warns if the domain, this env var, or the secret is missing.
`castle apply` warns if the domain, this env var, or the secret is missing.
- **LAN DNS.** Add a wildcard on your LAN's DNS server (usually the router)
pointing `*.<domain>` at the gateway's private IP — `address=/<domain>/<gateway-ip>`
(dnsmasq) or the equivalent A record. The public zone gets no A records, so
@@ -493,8 +493,9 @@ manage:
systemd: {}
```
Enables `castle service enable/disable` and `castle service logs`. An empty `{}`
uses defaults (enable=true, restart=on-failure, restart_sec=2).
Marks the deployment systemd-managed, so `castle apply` generates and reconciles
its unit (and `castle service logs` tails it). An empty `{}` uses defaults
(enable=true, restart=on-failure, restart_sec=2).
Full options:
```yaml
@@ -636,17 +637,17 @@ castle program create my-service --stack python-fastapi # 1. Scaffold + regist
cd /data/repos/my-service && uv sync # 2. Install deps
# ... implement ...
castle program test my-service # 3. Run tests
castle service enable my-service # 4. Generate systemd unit, start
castle gateway reload # 5. Update Caddy routes
castle apply my-service # 4. Render unit + routes and reconcile (start it)
```
After `service enable`, the service starts automatically on boot and restarts
on failure. Manage with:
`castle apply` renders the systemd unit + Caddy route and starts the service
(which then runs on boot and restarts on failure). Manage with:
```bash
castle logs my-service -f # Tail logs
castle service run my-service # Run in foreground (for debugging)
castle service disable my-service # Stop and remove systemd unit
castle service restart my-service # Imperative bounce
# To stop it durably: set `enabled: false` in its deployment, then `castle apply`
```
### Tool lifecycle
@@ -656,7 +657,7 @@ castle program create my-tool --stack python-cli # 1. Scaffold + register
cd /data/repos/my-tool && uv sync # 2. Install deps
# ... implement ...
castle program test my-tool # 3. Run tests
uv tool install --editable /data/repos/my-tool/ # 4. Install to PATH
castle apply my-tool # 4. Install the path deployment on PATH
```
### Job lifecycle
@@ -676,7 +677,7 @@ manage:
systemd: {}
```
`castle job enable my-job` generates both a `.service` (Type=oneshot)
`castle apply my-job` generates both a `.service` (Type=oneshot)
and a `.timer` file.
## Infrastructure paths

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@@ -171,7 +171,7 @@ See @docs/registry.md for the full registry reference.
## Serving with Caddy
For production, the static build output is served by Caddy rather than a Node
process. You do **not** write this block by hand — `castle deploy` generates it.
process. You do **not** write this block by hand — `castle apply` generates it.
The flow:
1. You build the frontend with `castle program build <name>` (deploy does **not**

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@@ -119,7 +119,7 @@ leaves the schema intact (and says so). To destroy the data too:
castle delete my-app --purge-data # drop schema my_app cascade
```
`castle deploy` then prunes the schema from `PGRST_DB_SCHEMAS`; **restart the
`castle apply` then prunes the schema from `PGRST_DB_SCHEMAS`; **restart the
`supabase` service** for PostgREST to pick up the added/removed schema list.
## Auth, RLS & the three privacy layers
@@ -161,7 +161,7 @@ service itself is likewise at `supabase.<gateway.domain>`.) See
castle program create my-app --stack supabase --description "..." # scaffold + register
castle program build my-app # apply unapplied migrations to the substrate
castle program test my-app # deno test over functions/ (if deno present)
castle deploy && castle gateway reload # serve the static UI at /my-app/
castle apply # serve the static UI at /my-app/
```
## Scaffolding

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@@ -17,7 +17,7 @@ internet at `<name>.<gateway.public_domain>`, via a Cloudflare Tunnel.
Cloudflare (no inbound holes, no public IP needed) and forwards each public
hostname to the gateway on `:443`, rewriting the Host header and TLS SNI to the
*internal* name so Caddy routes it and its wildcard cert validates. The public
surface is exactly the set of `public: true` services — `castle deploy` generates
surface is exactly the set of `public: true` services — `castle apply` generates
the ingress from the registry.
- **One kill switch.** Stop `castle-tunnel` → instantly nothing is public.
@@ -76,8 +76,8 @@ manage:
Bring it online:
```bash
castle deploy # writes cloudflared.yml from public services
castle service enable castle-tunnel # start the tunnel
castle apply # writes cloudflared.yml from public services
castle apply castle-tunnel # start the tunnel
```
## Using the toggle
@@ -92,10 +92,10 @@ public: true # also expose at <name>.pub.payne.io via the tunnel
Then just deploy:
```bash
castle deploy
castle apply
```
`castle deploy` regenerates `~/.castle/artifacts/specs/cloudflared.yml` from the
`castle apply` regenerates `~/.castle/artifacts/specs/cloudflared.yml` from the
current set of public services and restarts `castle-tunnel`. Flip `public` back to
`false` (or remove it) and redeploy to un-expose — the hostname drops out of the
ingress immediately.
@@ -116,14 +116,14 @@ printf %s "<token>" > ~/.castle/secrets/CLOUDFLARE_PUBLIC_DNS_TOKEN
chmod 600 ~/.castle/secrets/CLOUDFLARE_PUBLIC_DNS_TOKEN
```
With it present, every `castle deploy` **reconciles** the public CNAMEs against the
With it present, every `castle apply` **reconciles** the public CNAMEs against the
current public set — creating missing ones and deleting removed ones — and prints a
one-line summary. It only ever touches records pointing at *this* tunnel
(`<tunnel_id>.cfargotunnel.com`), so hand-managed records in the same zone are safe.
This token is separate from `CLOUDFLARE_API_TOKEN` (which is the ACME token for the
internal zone); the public zone is usually a different zone/account.
Without the token, `castle deploy` instead prints the exact command to run per host:
Without the token, `castle apply` instead prints the exact command to run per host:
```bash
cloudflared tunnel route dns <tunnel-id> <name>.pub.payne.io