Self-hosted tunneled reverse proxy: a service on a NAT'd host (e.g. a home
Jellyfin box) gets a public HTTPS hostname with no port-forwarding, by pairing
two agents over WireGuard. Implements Phases 0-3 of docs/REMOTE_ACCESS_ROADMAP.md.
Agent (Go):
- new internal/wireguard package: Manager interface + kernel backend (wg/ip)
and a userspace netstack backend (wireguard-go + gVisor) so Windows/macOS
peers need no driver/admin; in-process keygen returns only the public key
(private keys never leave the host)
- wireguard:keygen/interface/peer/status/forward/unforward + firewall
:allow_port/:deny_port commands; wireguard + firewall capability probes
- TCP forwarder (tnet.ListenTCP / net.Listen -> dial localhost) carries
traffic to the real service behind a netstack peer
Backend (Python):
- Tunnel + ExposedService models; tunnel_netutil (subnet allocator, health);
tunnel_broker_service (keygen->up->peer->verify, firewall open, reconcile-on-
reconnect); tunnel_publish_service (forward -> nginx -> DNS -> auth -> cert)
- nginx remote-upstream vhost (WebSocket + proxy_buffering off)
- /api/v1/tunnels CRUD + /<id>/services publish/unpublish
- panel-authoritative reconcile hooked into the agent gateway on reconnect
Frontend (React):
- Remote Access page (tunnels + exposed services, status, teardown) and an
"Expose a Local Service" wizard; new services/api/tunnels.js
Verified: go build (win/linux) + vet + go tests (forwarder + no-leak parsers);
py_compile + pytest (netutil, reconcile, nginx template); create_app boot;
eslint + npm run build. Live multi-host run pending.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Introduce connstring package and tests to decode panel "connection strings" and add UI/CLI hooks to accept them. Move file access handlers into a dedicated file_handlers.go with strict allowlist checks that resolve symlinks and validate parent dirs to prevent escapes; add unit tests covering symlink and allowlist behaviour. Add credential-rotation HMAC verification, command blocking and configurable exec timeout resolution, gate system:exec registration by feature flag, and fix Docker logs reading to use io.ReadAll with a size cap. Misc: buffer restart channel to avoid IPC hangs, improve UDP discovery error handling, expose IPC token via a local endpoint and add IPCTokenPath, and wire the pairer to handle connection-string pairing and persist credentials. Overall changes focus on security hardening, UX for single-string pairing, and reliability fixes.
Three wins exposed by the redeployed panel showing real data:
1. Permission expansion now covers every namespace, not just docker
and system. Extend _expand_permission_scope so any action with a
read-style verb (list, list_installed, list_units, status, info,
inspect, search, logs, stats, available, current) accepts a
`<ns>:read` or `<ns>:<sub>:read` candidate. Mutating verbs add a
`<ns>:write` candidate. This unblocks docker:image:list,
system:info, packages:list_installed, systemd:list_units, and the
pyenv read paths for users on read-style profiles.
2. Go runtime probe was using `--version` (a flag), but Go takes
`version` as a subcommand. The agent's runtime detector tries
each form and falls back gracefully; Go is now correctly
identified by `go version` and the panel shows a real version
string instead of the "go flag provided but not defined" error
text.
3. SystemInfo gains Platform + CPUModel fields (pushed alongside
the existing hostname/cores/memory/disk). OverviewTab now reads
from the persisted server row first and falls back to the
synchronous getRemoteSystemInfo response — so CPU and memory
render even when the system:info action is permission-denied or
the agent is offline.
metrics.GetSystemInfo also gets a runtime.NumCPU() fallback so
CPU cores never reports 0 on Windows hosts where gopsutil's WMI
queries flake.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Users had to SSH in to run `cloudflared tunnel login` before any of
the Tunnels tab worked. Wire up the OAuth flow so the panel can
trigger it and surface the auth URL for the user to open from their
own browser.
Agent:
- New cloudflared.LoginEvent + Manager.Login() that spawns the
process, regex-matches the dash.cloudflare.com/argotunnel URL on
stdout/stderr, and watches cert.pem in parallel as a reliable
completion signal. 15-minute hard ceiling.
- New cloudflared:login action returns {job_id, channel} immediately;
the goroutine emits start → status (with auth_url) → done events
on the job channel.
- Non-linux stub returns "unsupported".
- jobs.HasTerminated() helper so handler shutdown paths can avoid
double-emitting the terminator.
Panel:
- POST /servers/<id>/cloudflared/login + RemoteCloudflaredService.login
- ApiService.startRemoteCloudflaredLogin
Frontend:
- CloudflaredTab gains a "Login to Cloudflare" CTA when not authed.
Click → starts the agent flow, joins the job's Socket.IO room,
listens for the auth_url event, and renders an Open-in-Browser
button. Once the agent emits done, refreshes capabilities + status
+ tunnel list automatically — the rest of the tab unlocks itself.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Foundation for the remote server setup experience: agent gains
auto-sudo, package and systemd handler additions, missing docker
verbs, and a job-channel registry for streaming long-running
operations. Panel exposes the new agent surface as /servers/<id>/
packages, /services, and /refresh-capabilities routes.
Agent:
- New protocol actions: agent:recapabilities, packages:update_cache/
install_async/upgrade/search/info, systemd:daemon_reload/list_units/
logs/logs_follow, docker:container:create/exec, docker:image:build,
docker:volume:create, docker:network:create.
- Auto-sudo helper (sudo -n) probed at boot, surfaced as a capability;
apt invocations get DEBIAN_FRONTEND=noninteractive + dpkg force-confold.
- jobs registry with ring-buffer replay so panels that subscribe to a
job:<id> channel mid-flight still see prior progress events.
- Capability re-probe is mutex-guarded and additive (transient probe
failures don't drop features the panel already saw).
- Existing systemd handlers now sudo and use 2-min timeouts for cold
service starts (postgresql etc.).
Panel:
- remote_packages_service.py and remote_systemd_service.py mirror the
cron service shape (thin send_command dispatcher).
- 13 new routes on servers.py covering packages CRUD + search/info,
systemd unit control + logs + daemon-reload, and capability refresh.
- Long-running install/upgrade return {job_id, channel} for the
frontend to subscribe to via Socket.IO.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add Phase 4 agent primitives (package management, systemd control, bounded exec) and advertise file-access roots so the panel can target agents safely. Introduces agent/internal/agent/workflow_handlers.go with handlers for packages, systemd and system:exec, registers those actions, and extends capabilities.Probe and capability messages to include runtimes and allowed_paths.
Backend: add RemoteFileService and new /servers/<id>/files/* endpoints, store advertised allowed_paths in agent_registry and expose a getter, normalize agent system metrics shape in remote_docker_service, and wire capabilities/allowed_paths into the servers list. Extend workflow_engine with agent_command, capability_gate and runtime_gate nodes and basic runtime-version comparison.
Frontend: add TargetPicker component and update FileManager to support remote targets (browse/read/write via agent), guard unsupported remote ops, and normalize agent file responses for the UI. Overall this enables remote file browsing and Phase 4 workflows against connected agents.
Introduce Cloudflare Tunnel management end-to-end.
Highlights:
- Add agent/internal/cloudflared package (Manager interface, Linux impl, non-Linux stub) to shell out to cloudflared and detect auth via cert.pem.
- Wire cloudflared Manager into the agent and register cloudflared:* handlers for status/list/create/route/delete.
- Extend protocol.Capabilities and agent payloads with runtimes detection and a cloudflared capability; implement runtime version probes.
- Add backend API endpoints and RemoteCloudflaredService that forward cloudflared actions to agents; update agent registry to store runtimes.
- Frontend: new CloudflaredTab UI, API client methods for remote cloudflared operations, styles, and UX tweaks (plus minor component/class refinements in LogViewer, ProcessTable, FileManager, StyleGuide, terminal styles).
Purpose: allow the panel to manage Cloudflare named tunnels by delegating commands to the agent's cloudflared CLI, while surfacing binary/auth state (install vs authenticated) and detected language runtimes.
Introduce remote cron management across agent, backend and frontend.
- Agent: add a cron.Manager to agent, register handlers (cron:status,list,add,remove,toggle) and implement thin JSON handlers. Add agent/pkg/protocol message constants.
- Cron package: new platform-agnostic interface with Linux implementation (crontab-driven) and non-Linux stub. Includes content-based stable IDs, validation, list/add/remove/toggle and human-friendly schedule descriptions.
- Backend: expose /servers/<id>/cron/* endpoints and add RemoteCronService to proxy requests to agents via agent_registry, mapping agent responses to HTTP codes.
- Frontend: enhance Tabs component with overflow "More" popover; add API calls for remote cron ops; wire a Cron tab in ServerDetail (guarded by server.capabilities.cron) with UI for listing, adding, toggling and removing jobs; add Cron UI in Git page by switching to the new Tabs component.
Notes: cron functionality is Linux-only; non-Linux agents return an explicit unsupported status. Validation prevents unsafe shell operators and requires absolute command paths.
Introduce a small agent-side GUI SDK to expose desktop-capture primitives (capabilities + screenshot) with platform implementations (windows, linux, other) and register handlers in the agent; add protocol actions gui:capabilities and gui:screenshot.
Refactor frontend UI for consistency and usability: replace multiple custom banners with a unified alert system, introduce EmptyState component usage across pages, switch Modal implementation to a Sheet (responsive side sheet with size tokens), make StatCard clickable with detail and active states and update Servers to use StatCard/StatsGrid, and standardize error/alert classes in QueryRunner, RemoteTerminal, CompareView, PipelineView, PromoteModal, ResourceLimitsModal, BasicAuthModal, etc. Also adjust badge/sheet sizing, alert & card styles, theme border variables, and small polish in ConfirmDialog, StyleGuide, and other components.
Probe and report agent feature capabilities (cron, docker, systemd, nginx, etc.) so the panel can gate target pickers without extra round-trips.
Key changes:
- Add agent/internal/capabilities: probes host for features and platform/distro, returns protocol.CapabilitiesMessage cached at agent startup.
- Agent: store probed capabilities, send them on every transport reconnect (sendCapabilities) and include them when using poll transport.
- Protocol: introduce TypeCapabilities and CapabilitiesMessage (map[string]bool + platform/distro fields).
- Poll transport: accept CapabilitiesMessage in Send(), serialize to raw payload and queue for next /poll; support one-shot capabilities in poll body.
- Backend: handle capabilities from socket (on_capabilities) and poll endpoint; persist capabilities in in-memory ConnectedAgent (agent_registry) with helpers get_capabilities/has_capability; include capabilities/platform info in servers API.
- New fleet API (GET /api/v1/fleet/targets): list runnable targets (local + connected agents) and optionally filter agents by a requested feature using the advertised capability map.
Rationale: make agent feature availability explicit and discoverable to the panel so UI pickers can show only applicable agents without asking agents on every UI interaction.
Introduce full agent fleet management and discovery features across backend, agent, and frontend. Backend: add AgentVersion and AgentRollout models, extend Server/ServerGroup/ServerCommand/AgentSession with fleet, queue and latency fields; implement AgentFleetService (bulk upgrades, staged rollouts, queued commands, retries, diagnostics) and DiscoveryService (UDP broadcast scan); add new servers API endpoints for fleet operations. Agent: add UDP discovery responder, agent:update handler to trigger updater, and wire updater.UpdateTo to install specific versions; extend protocol messages with discovery and agent:update types. Registry: deliver queued commands on agent connect and track heartbeat latency. Frontend: add AgentFleet page and route, plus API client updates. Also add SECURITY_AUDIT.md to .gitignore. These changes enable discovery, staged rollouts, offline command queuing with retries, and fleet health/diagnostics.
Adds API key rotation, IP allowlisting, anomaly detection, and replay protection to the ServerKit agent system. Backend changes include new endpoints, models, and services for security alerts, nonce tracking, and anomaly detection, as well as updates to the server model and agent authentication logic. The agent now supports credential rotation and replay protection via nonces. Frontend updates add UI and API methods for managing allowed IPs, viewing security alerts, and rotating API keys. Documentation and environment setup instructions are included.
Implements remote terminal functionality across agent, backend, and frontend. Adds PTY session management in the agent using creack/pty, new protocol actions, and terminal manager. Backend exposes terminal session APIs and session tracking via TerminalService. Frontend introduces a RemoteTerminal component using xterm.js and related APIs for interactive remote shell access.
Implements full remote Docker Compose project management, including listing, starting, stopping, restarting, pulling images, and viewing logs for compose projects. Updates the agent, backend API, service layer, frontend UI, and API client to support these operations for both local and remote servers.
Introduces the initial Go-based ServerKit agent implementation, supporting Docker and system metrics collection, with supporting scripts and documentation. Adds a comprehensive multi-server management integration plan, including architecture, security model, database schema, API design, frontend updates, installation methods, and phased implementation roadmap. Updates ROADMAP.md to mark advanced security phase as completed.
