Add castle doctor + getting-started docs
The README/docs explained how the system works but not how to get it up and running, and there was no way to tell a healthy node from a half-configured one. Two additions close that gap. castle doctor — a read-only preflight/postflight check. It inspects setup *and* runtime (CLI on PATH, uv, lingering; repo:, control plane registered, dashboard built; gateway/api running + listening, specs generated; and — under tls=acme — DNS-plugin Caddy, provider token, :443 bind; tunnel config for public services) and, for anything not green, prints the exact next command. Exit 0 when nothing failed (warnings allowed), 1 otherwise, so it doubles as a scriptable smoke test after install/deploy. Agents can lean on it the same way they use `castle tool list`. Docs — the quick start now leads with prerequisites and one command (install.sh installs the CLI + registers the control plane, so the old manual `uv tool install` step is gone), adds a `castle doctor` verify step, and gains an "exposure ladder" table framing the three rungs (localhost → LAN HTTPS → public) that link the deep DNS/TLS/tunnel docs. install.sh's closing summary and the AGENTS.md CLI reference mention doctor too.
This commit is contained in:
423
cli/src/castle_cli/commands/doctor.py
Normal file
423
cli/src/castle_cli/commands/doctor.py
Normal file
@@ -0,0 +1,423 @@
|
||||
"""castle doctor — diagnose whether this node is set up and running.
|
||||
|
||||
Read-only. It answers the question the runtime status view can't: *is this node
|
||||
correctly configured, and if not, what's the exact next command?* Runs a series
|
||||
of checks grouped into Environment, Configuration, Runtime, and TLS & exposure;
|
||||
each check reports ok / warn / fail with a one-line hint when action is needed.
|
||||
|
||||
Exit code: 0 when nothing FAILed (warnings are allowed), 1 otherwise — so it
|
||||
doubles as a scriptable smoke test after `./install.sh` or `castle deploy`.
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import argparse
|
||||
import shutil
|
||||
import socket
|
||||
from dataclasses import dataclass
|
||||
from pathlib import Path
|
||||
|
||||
OK, WARN, FAIL = "ok", "warn", "fail"
|
||||
|
||||
_ICON = {
|
||||
OK: "\033[32m✓\033[0m",
|
||||
WARN: "\033[33m!\033[0m",
|
||||
FAIL: "\033[31m✗\033[0m",
|
||||
}
|
||||
|
||||
_GATEWAY = "castle-gateway"
|
||||
_API = "castle-api"
|
||||
_DASHBOARD = "castle"
|
||||
|
||||
|
||||
@dataclass
|
||||
class Check:
|
||||
status: str
|
||||
label: str
|
||||
detail: str = ""
|
||||
hint: str = ""
|
||||
|
||||
|
||||
def _print(check: Check) -> None:
|
||||
line = f" {_ICON[check.status]} {check.label}"
|
||||
if check.detail:
|
||||
line += f" \033[90m{check.detail}\033[0m"
|
||||
print(line)
|
||||
if check.hint and check.status != OK:
|
||||
print(f" \033[90m→ {check.hint}\033[0m")
|
||||
|
||||
|
||||
def _port_open(port: int, host: str = "127.0.0.1") -> bool:
|
||||
try:
|
||||
with socket.create_connection((host, port), timeout=0.5):
|
||||
return True
|
||||
except OSError:
|
||||
return False
|
||||
|
||||
|
||||
# --- Environment ------------------------------------------------------------
|
||||
|
||||
|
||||
def _check_environment() -> list[Check]:
|
||||
checks: list[Check] = []
|
||||
|
||||
if shutil.which("castle"):
|
||||
checks.append(Check(OK, "castle CLI on PATH"))
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
WARN,
|
||||
"castle CLI not on PATH",
|
||||
hint="ensure ~/.local/bin is on PATH (uv tool install target)",
|
||||
)
|
||||
)
|
||||
|
||||
if shutil.which("uv"):
|
||||
checks.append(Check(OK, "uv installed"))
|
||||
else:
|
||||
checks.append(
|
||||
Check(FAIL, "uv not found", hint="curl -LsSf https://astral.sh/uv/install.sh | sh")
|
||||
)
|
||||
|
||||
checks.append(_check_lingering())
|
||||
return checks
|
||||
|
||||
|
||||
def _check_lingering() -> Check:
|
||||
import getpass
|
||||
import subprocess
|
||||
|
||||
user = getpass.getuser()
|
||||
try:
|
||||
out = subprocess.run(
|
||||
["loginctl", "show-user", user],
|
||||
capture_output=True,
|
||||
text=True,
|
||||
check=False,
|
||||
)
|
||||
except FileNotFoundError:
|
||||
return Check(WARN, "systemd lingering unknown", detail="loginctl not found")
|
||||
if "Linger=yes" in out.stdout:
|
||||
return Check(OK, "systemd user lingering enabled")
|
||||
return Check(
|
||||
WARN,
|
||||
"systemd user lingering off",
|
||||
detail="services stop when you log out",
|
||||
hint=f"sudo loginctl enable-linger {user}",
|
||||
)
|
||||
|
||||
|
||||
# --- Configuration ----------------------------------------------------------
|
||||
|
||||
|
||||
def _check_configuration(config) -> list[Check]:
|
||||
checks: list[Check] = []
|
||||
|
||||
gw = config.gateway
|
||||
tls = (gw.tls or "off").lower()
|
||||
checks.append(
|
||||
Check(
|
||||
OK,
|
||||
"castle.yaml loaded",
|
||||
detail=f"gateway :{gw.port}, tls={tls}"
|
||||
+ (f", domain={gw.domain}" if gw.domain else ""),
|
||||
)
|
||||
)
|
||||
|
||||
if config.repo:
|
||||
checks.append(Check(OK, "repo: set", detail=str(config.repo)))
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"repo: not set in castle.yaml",
|
||||
detail="source: repo:<name> cannot resolve castle's own programs",
|
||||
hint="add 'repo: <path-to-castle-checkout>' to ~/.castle/castle.yaml",
|
||||
)
|
||||
)
|
||||
|
||||
missing = [n for n in (_GATEWAY, _API, _DASHBOARD) if n not in config.deployments]
|
||||
if not missing:
|
||||
checks.append(
|
||||
Check(OK, "control plane registered", detail="gateway, api, dashboard")
|
||||
)
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"control plane missing",
|
||||
detail=", ".join(missing),
|
||||
hint="re-run ./install.sh (it seeds the control plane from bootstrap/)",
|
||||
)
|
||||
)
|
||||
|
||||
checks.append(_check_dashboard_built(config))
|
||||
return checks
|
||||
|
||||
|
||||
def _check_dashboard_built(config) -> Check:
|
||||
from castle_core.lifecycle import _static_built
|
||||
|
||||
if _DASHBOARD not in config.deployments:
|
||||
return Check(WARN, "dashboard not registered", detail="skipping build check")
|
||||
if _static_built(_DASHBOARD, config):
|
||||
return Check(OK, "dashboard built", detail="app/dist/")
|
||||
return Check(
|
||||
WARN,
|
||||
"dashboard not built",
|
||||
detail="gateway has no UI to serve at /",
|
||||
hint=f"castle program build {_DASHBOARD}",
|
||||
)
|
||||
|
||||
|
||||
# --- Runtime ----------------------------------------------------------------
|
||||
|
||||
|
||||
def _deployment_port(config, name: str) -> int | None:
|
||||
dep = config.deployments.get(name)
|
||||
expose = getattr(dep, "expose", None)
|
||||
http = getattr(expose, "http", None)
|
||||
internal = getattr(http, "internal", None)
|
||||
return getattr(internal, "port", None)
|
||||
|
||||
|
||||
def _check_runtime(config) -> list[Check]:
|
||||
from castle_core.config import SPECS_DIR
|
||||
from castle_core.lifecycle import is_active
|
||||
|
||||
checks: list[Check] = []
|
||||
|
||||
# Gateway: active + actually listening on its port.
|
||||
gw_port = config.gateway.port
|
||||
if is_active(_GATEWAY, config):
|
||||
if _port_open(gw_port):
|
||||
checks.append(Check(OK, "gateway running", detail=f"listening on :{gw_port}"))
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
WARN,
|
||||
"gateway active but not listening",
|
||||
detail=f":{gw_port} refused",
|
||||
hint="castle gateway reload; check 'castle service logs castle-gateway'",
|
||||
)
|
||||
)
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"gateway not running",
|
||||
hint="castle deploy && castle start",
|
||||
)
|
||||
)
|
||||
|
||||
# API: active + listening on its port.
|
||||
api_port = _deployment_port(config, _API)
|
||||
if is_active(_API, config):
|
||||
if api_port and not _port_open(api_port):
|
||||
checks.append(
|
||||
Check(
|
||||
WARN,
|
||||
"castle-api active but not listening",
|
||||
detail=f":{api_port} refused",
|
||||
hint="castle service logs castle-api",
|
||||
)
|
||||
)
|
||||
else:
|
||||
detail = f"listening on :{api_port}" if api_port else ""
|
||||
checks.append(Check(OK, "castle-api running", detail=detail))
|
||||
else:
|
||||
checks.append(
|
||||
Check(FAIL, "castle-api not running", hint="castle deploy && castle start")
|
||||
)
|
||||
|
||||
# Generated artifacts.
|
||||
registry = SPECS_DIR / "registry.yaml"
|
||||
caddyfile = SPECS_DIR / "Caddyfile"
|
||||
if registry.exists() and caddyfile.exists():
|
||||
checks.append(Check(OK, "registry + Caddyfile generated"))
|
||||
else:
|
||||
missing = [
|
||||
p.name for p in (registry, caddyfile) if not p.exists()
|
||||
]
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"generated specs missing",
|
||||
detail=", ".join(missing),
|
||||
hint="castle deploy",
|
||||
)
|
||||
)
|
||||
|
||||
return checks
|
||||
|
||||
|
||||
# --- TLS & exposure ---------------------------------------------------------
|
||||
|
||||
|
||||
def _check_tls_exposure(config) -> list[Check]:
|
||||
from castle_core.config import SECRETS_DIR
|
||||
|
||||
checks: list[Check] = []
|
||||
gw = config.gateway
|
||||
tls = (gw.tls or "off").lower()
|
||||
|
||||
if tls == "acme":
|
||||
provider = gw.acme_dns_provider or "cloudflare"
|
||||
|
||||
if not gw.domain:
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"tls=acme but no domain set",
|
||||
hint="add 'domain: <your-zone>' under gateway: in castle.yaml",
|
||||
)
|
||||
)
|
||||
|
||||
# DNS-plugin Caddy (stock apt Caddy has no DNS-01 modules).
|
||||
plugin = Path("/usr/local/bin/caddy")
|
||||
module = f"dns.providers.{provider}"
|
||||
has_module = False
|
||||
if plugin.exists():
|
||||
import subprocess
|
||||
|
||||
out = subprocess.run(
|
||||
[str(plugin), "list-modules"],
|
||||
capture_output=True,
|
||||
text=True,
|
||||
check=False,
|
||||
)
|
||||
has_module = module in out.stdout
|
||||
if has_module:
|
||||
checks.append(Check(OK, "DNS-plugin Caddy present", detail=module))
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"DNS-plugin Caddy missing",
|
||||
detail=f"need {module} at /usr/local/bin/caddy",
|
||||
hint=f"./install.sh --with-dns-plugin={provider}",
|
||||
)
|
||||
)
|
||||
|
||||
# Provider token secret.
|
||||
token_name = {"cloudflare": "CLOUDFLARE_API_TOKEN"}.get(
|
||||
provider, f"{provider.upper()}_API_TOKEN"
|
||||
)
|
||||
if (SECRETS_DIR / token_name).exists():
|
||||
checks.append(Check(OK, "provider token present", detail=token_name))
|
||||
else:
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"provider token missing",
|
||||
detail=f"~/.castle/secrets/{token_name}",
|
||||
hint=f"printf '%s' <token> > ~/.castle/secrets/{token_name} && chmod 600 $_",
|
||||
)
|
||||
)
|
||||
|
||||
# Can the gateway bind :443/:80?
|
||||
checks.append(_check_privileged_ports())
|
||||
|
||||
# Public exposure (only relevant if a deployment opts in).
|
||||
public = [n for n, d in config.deployments.items() if getattr(d, "public", False)]
|
||||
if public:
|
||||
from castle_core.lifecycle import is_active
|
||||
|
||||
if gw.public_domain and gw.tunnel_id:
|
||||
checks.append(
|
||||
Check(OK, "tunnel configured", detail=f"{len(public)} public service(s)")
|
||||
)
|
||||
else:
|
||||
missing = []
|
||||
if not gw.public_domain:
|
||||
missing.append("public_domain")
|
||||
if not gw.tunnel_id:
|
||||
missing.append("tunnel_id")
|
||||
checks.append(
|
||||
Check(
|
||||
FAIL,
|
||||
"public services but tunnel unconfigured",
|
||||
detail="missing " + ", ".join(missing),
|
||||
hint="see docs/tunnel-setup.md",
|
||||
)
|
||||
)
|
||||
if not is_active("castle-tunnel", config):
|
||||
checks.append(
|
||||
Check(
|
||||
WARN,
|
||||
"castle-tunnel not running",
|
||||
detail="public routes are down",
|
||||
hint="castle service start castle-tunnel",
|
||||
)
|
||||
)
|
||||
|
||||
if not checks:
|
||||
checks.append(Check(OK, "off mode — no TLS/exposure to check", detail="localhost only"))
|
||||
return checks
|
||||
|
||||
|
||||
def _check_privileged_ports() -> Check:
|
||||
try:
|
||||
val = int(
|
||||
Path("/proc/sys/net/ipv4/ip_unprivileged_port_start").read_text().strip()
|
||||
)
|
||||
except (OSError, ValueError):
|
||||
return Check(WARN, "cannot read unprivileged port floor")
|
||||
if val <= 80:
|
||||
return Check(OK, "can bind :80/:443", detail=f"unprivileged floor {val}")
|
||||
return Check(
|
||||
WARN,
|
||||
"cannot bind :80/:443",
|
||||
detail=f"unprivileged floor is {val}",
|
||||
hint="echo 'net.ipv4.ip_unprivileged_port_start=80' | "
|
||||
"sudo tee /etc/sysctl.d/50-castle-gateway.conf && sudo sysctl --system",
|
||||
)
|
||||
|
||||
|
||||
# --- Driver -----------------------------------------------------------------
|
||||
|
||||
|
||||
def run_doctor(args: argparse.Namespace) -> int:
|
||||
from castle_core.config import load_config
|
||||
|
||||
print("\n\033[1mCastle Doctor\033[0m")
|
||||
|
||||
try:
|
||||
config = load_config()
|
||||
except Exception as exc: # noqa: BLE001 — surface any load failure as the first FAIL
|
||||
print("\n\033[1mConfiguration\033[0m")
|
||||
_print(
|
||||
Check(
|
||||
FAIL,
|
||||
"castle.yaml failed to load",
|
||||
detail=str(exc),
|
||||
hint="check ~/.castle/castle.yaml — re-run ./install.sh to reseed",
|
||||
)
|
||||
)
|
||||
print()
|
||||
return 1
|
||||
|
||||
sections: list[tuple[str, list[Check]]] = [
|
||||
("Environment", _check_environment()),
|
||||
("Configuration", _check_configuration(config)),
|
||||
("Runtime", _check_runtime(config)),
|
||||
("TLS & exposure", _check_tls_exposure(config)),
|
||||
]
|
||||
|
||||
fails = warns = 0
|
||||
for title, checks in sections:
|
||||
print(f"\n\033[1m{title}\033[0m")
|
||||
for check in checks:
|
||||
_print(check)
|
||||
fails += check.status == FAIL
|
||||
warns += check.status == WARN
|
||||
|
||||
print()
|
||||
if fails:
|
||||
print(f"\033[31m{fails} problem(s)\033[0m" + (f", {warns} warning(s)" if warns else ""))
|
||||
return 1
|
||||
if warns:
|
||||
print(f"\033[33m{warns} warning(s)\033[0m — Castle is up; address when convenient")
|
||||
return 0
|
||||
print("\033[32mAll checks passed.\033[0m")
|
||||
return 0
|
||||
Reference in New Issue
Block a user