Under a half-open TCP (server side closed, client OS still buffering
writes), the daemon's write.send() inside the tokio::select! branch
blocks forever. tokio::select does not preempt a running future, so
the whole loop freezes — idle_tick never gets to check last_rx, no
'channel ended' log ever fires, and the daemon silently spins on a
dead socket for hours.
Observed on architect Jul 5 2026: daemon connected at 12:59:13,
heartbeats worked for ~2.5 min, then went silent. TCP session showed
ESTABLISHED on the node side, no ESTABLISHED on the gateway side.
Restarting the daemon 'fixed' it — but it re-hung within minutes.
Fix: wrap both write.send() call sites in a tokio::time::timeout of
WRITE_DEADLINE=10s. If a send stalls past that, we log and return Ok()
to trigger the main-loop reconnect. Short enough that it fires long
before the 40s read-idle would (which was our only escape hatch and
never triggered because the loop was frozen).
After 'claude update' replaces the binary, the daemon's re-probe ran the fresh
binary which macOS Gatekeeper re-verifies (>2s) — the 2s probe cap missed the new
version, so the UI didn't refresh (update worked but looked stale). Bump the cap to
8s; frontend polls the tools endpoint a few times post-update to catch the re-probe.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
The ↑ badge on each tool card is now a button: confirm → POST
/api/nodes/{id}/tools/{tool}/update → daemon runs the tool's own updater + re-probes.
- daemon: tool_update op (spawned task so the 170s update can't stall the WS loop;
re-probes + re-sends node_tools after). Fixed command allow-list (no arbitrary
shell): claude/glm → `claude update`; kimi → `uv tool upgrade kimi-cli`; ollama →
brew upgrade (mac) / install.sh (linux); else unsupported. 4KB output cap.
- cm-api: call_timeout/request_timeout (long ops); POST .../tools/{tool}/update
(workspace-scoped, allow-list) → {ok,output}.
- frontend: ↑latest becomes an Update button → confirm → spinner → refresh/err.
Note: claude/kimi/glm are user-space (no sudo); ollama on Linux uses install.sh
(needs sudo — works on passwordless nodes, returns an error otherwise; surfaced in UI).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Each node card now shows installed versions of Docker / Claude Code / Kimi / GLM /
Ollama (conditional per node) under the ssh card, with an "update available" badge.
- daemon: probe_tools() finds docker/claude/kimi-cli/ollama across candidate bin dirs,
extracts semver from --version, reports {"t":"node_tools",...} on connect + every 15m.
- migration node_tools + tool_latest; cm-db repo node_tools (upsert/list/latest).
- cm-api: fleet.rs NodeTools uplink → upsert; tool_versions.rs spawn_latest_checker
(24h, npm/pypi/github; docker display-only); GET /api/nodes/{id}/tools (glm mirrors
claude). Spawned in clawmates-server.
- frontend: NodeTools cards on each HostCard with the ↑latest badge.
Phase 2 (one-click update execution) intentionally deferred.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Survey + fixes so the pipeline passes at the Docker level (no k8s).
- Remove k8s: drop the `sandbox-k8s` job (kind/Calico/--features k8s-tests) and the
"Helm chart lints" gate step. release.yml was already k8s-clean.
- Rust job:
- `cargo fmt --all` — fix pre-existing formatting drift (fmt --check was failing).
- clippy -D warnings: fix 3 lib warnings (cm-brain sort_by_key→Reverse, cm-api
fleet.rs doc list indentation, node_rules map_or→is_none_or).
- Regenerate the .sqlx offline cache (was missing the cm-runtime run_loop test
query → offline compile failed). DB-backed tests use testcontainers at runtime.
- Set SQLX_OFFLINE=true on the rust + e2e jobs so query! macros compile against
the committed cache deterministically (no DB needed at compile time).
- Frontend job:
- Fix the 1 ESLint error (useAgentTelemetry: no setState-synchronously-in-effect;
tag the slice with agentId + derive null on mismatch).
- Fix 2 stale panel-params tests (`terminal` is a valid app id now; assert the
current APP_IDS + use a genuinely-unknown id for the reject case).
Verified locally: fmt clean, clippy --all-targets -D warnings clean (offline),
frontend lint 0 errors, tsc clean, 86/86 frontend tests pass, build OK.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Generalize the daemon's PTY spawn so a session can target either the node's host
shell (today) or `docker exec -it <container> tmux …` (the node-placed agent
terminal, which shares the container's node-local ~/drives). A `container` (+
optional `session`) field on pty_open/webrtc_offer selects the container path;
absent it, the host shell path is byte-identical to before — so the Infra node
terminal is unaffected. Threads PtyTarget through open_pty + rtc handle_offer →
build_peer → bridge_pty. Additive; nothing emits `container` yet.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Terminal keystrokes were ~400ms because every byte relayed browser→Cloudflare→
gw-04 (Europe)→tailscale→node, even when the node is on the user's own LAN. Add a
direct browser↔node WebRTC DataChannel so co-located terminals run at LAN speed;
the gateway is reduced to signaling; the WebSocket relay stays as the automatic
fallback (graceful degradation — never worse than before).
Daemon (clawmates-node v0.4.0, new src/rtc.rs):
- Add the `webrtc` crate (reuses the ring crypto provider we already install — no
conflict). Browser is the offerer; we answer, trickle ICE back over the control
channel, and on DataChannel open spawn a host PTY (tmux) bridged DIRECTLY to the
channel. Refactor open_pty → spawn_terminal_pty shared by both transports.
iceServers: STUN + auto host/tailnet candidates (direct, no relay, for LAN/tailnet).
Server (cm-api):
- NodeConn.signal_sinks; Uplink WebRtcAnswer/WebRtcIce/WebRtcFailed routed to the
browser; NodeHub webrtc_offer/ice/close + open_session/open_pty (open_terminal
split so the PTY opens only once the transport is chosen). bridge_terminal relays
signaling over the existing ticket-authed WS and opens the relay PTY on
{type:"fallback"}.
Browser (NodeTerminalApp):
- RTCPeerConnection + reliable/ordered DataChannel; offer/answer/ICE over the WS;
2.5s race → use the DataChannel if it opens, else fall back to the WS relay.
Reconnect wraps both. A direct⚡/relayed indicator shows the live transport.
Deployed; both nodes (morpheus, tank) updated to v0.4.0 and steady online. Direct-
path proof is a browser action (the ⚡ indicator + latency); confirmable from the
daemon's [rtc] logs.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Nodes flapped online/offline and the terminal died on the first blip. WebSockets
are the right transport (outbound, NAT-friendly); the fixes harden around it.
Server (cm-api):
- Anti-clobber connection epoch: a reconnecting daemon gets a fresh epoch; a stale
run_channel's teardown only clears the hub + sets offline if it still owns the
slot — so a lingering old channel can't flip a live reconnection offline (the
main false-offline cause).
- WS keepalive: run_channel now pings every 15s and tears down if no inbound
frame (incl. pong) for 35s — dead links detected in seconds, not minutes.
- Staleness sweeper backstop: spawn_node_sweeper (8s tick / 20s window) wired in
clawmates-server, so a vanished node goes offline within ~28s even if its
channel hangs (mark_stale_offline was defined but never called).
Daemon (clawmates-node v0.3.0):
- Heartbeats off the select thread (dedicated thread owns System + blocking
docker/tailscale/disk CLIs) so a slow op never starves heartbeats/pongs.
- Each handle_frame runs on its own task; added a 40s inbound idle deadline so a
half-open socket triggers a reconnect.
Frontend:
- useNodes streams /api/nodes/live (SSE push) instead of a 3s poll; isLive()
derives online from lastSeen freshness (<15s) so a transient column flip never
shows a healthy node down.
- Node terminal: clean auto-reconnect loop (re-mint ticket -> reconnect -> tmux
re-attaches and redraws the live screen = mosh-style snap-to-state over TCP),
replacing the [disconnected] dead-end.
Mosh evaluated: harvest principles (session/transport decoupling, snap-to-state,
already given by tmux), don't adopt — UDP is incompatible with our browser+CF+NAT
topology and it's GPLv3. Removed temporary terminal debug traces + /api/debug route.
Verified: node holds steadily online (heartbeat 1-3s, no flap) and goes cleanly
offline when the daemon stops.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Root cause (from the server trace: 69 banner bytes then immediate "to_browser
ended" = pty_exit): tmux spawned and exited instantly, writing its "sessions
should be nested with care" warning to stderr (not the PTY). The operator runs
the daemon inside their own tmux, so $TMUX was inherited and the spawned tmux
refused to nest → browser saw nothing.
- daemon (v0.2.2): spawn tmux on a DEDICATED socket (`tmux -L clawmates
new-session -A -s main`) and `env_remove("TMUX")`, so it can never collide with
or be refused by the operator's tmux.
- NodeTerminalApp: debounce the ResizeObserver (150ms). The pull-out animates
open, firing the observer on every pixel — previously ~80 resize frames per
open, each fit()+SIGWINCH. Now one resize after layout settles.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
The server trace showed pty_open is sent but the daemon (morpheus, v0.2.0) emits
no pty_out — so the PTY spawn was dying silently. Instrument it:
- daemon open_pty: log open/tmux/first-read/EOF/error/total to stdout, and send
an IMMEDIATE banner pty_out ("[clawmates] host shell on <host> — starting…") so
the browser confirms the relay even before the shell draws. If open_pty fails,
send the error as pty_out (was a silent pty_exit). Bump to v0.2.1.
- cm-api: temp GET /api/debug/node-pty/{id}?dbg=… opens a node terminal and reads
~2s of output with no browser/auth, to test the relay in isolation.
- NodeTerminalApp + ticket/ws routes already log each hop ([node-term]/[fleet-term]).
Diagnostic logic: banner shows + shell doesn't → relay ok, shell is the problem;
nothing shows → relay broken; daemon "EOF after N bytes" → shell exited.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
- Daemon: factor the terminal command into terminal_command(); add `--selftest`
which opens the host terminal PTY locally and prints ~2.5s of raw output, so
you can confirm tmux/zsh actually draws on a given node without the browser.
(Verified locally: tmux spawns zsh + draws its status bar.)
- cm-api: temporary [fleet-term] eprintln tracing in open_terminal, the pty_out
router, and the browser bridge (byte counts + sink presence) to locate where
output stops between daemon→server→browser. To be removed once diagnosed.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
The node terminal opened a bare bash PTY — bash prints its prompt once, so a
freshly-attached xterm showed nothing. Switch to `tmux new-session -A -s
clawmates` on the HOST (mirrors the agent terminal, but on the node itself, not
in a container): tmux redraws the whole screen on attach (no blank), and the
session is resumable across reopens. Starts in $HOME. Falls back to a login
shell if tmux is unavailable. ensure_tmux() best-effort installs tmux via the
host package manager when the daemon runs as root (systemd); otherwise logs a
hint to `apt install tmux`. Rebuilt + re-hosted both binaries.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Hostname/IP:
- Daemon reports the machine's hostname (sysinfo) + primary outbound IPv4 on each
heartbeat. migrations/0021 adds nodes.hostname/local_ip; cm-db heartbeat stores
them; node JSON exposes them. Cards now title on the real hostname (falling back
to name) + show the IP, instead of the "New node" placeholder. `name` stays
user-overridable (rename).
Terminal moved into the pull-out computer (no more per-card modal):
- New infra computer app NodeTerminalApp (computer/apps/infra) — xterm bridged to
a node's host shell over the node control channel, filling the app window
(mirrors the agent Terminal's layout + ResizeObserver). Added "terminal" to the
INFRA_CATALOG grid; a ?node= panel param targets a specific node (picker when
unset). Clicking Terminal on a node card now opens the infra computer to that
node's shell instead of a separate full-screen window. Deleted NodeTerminal.tsx.
Rebuilt + re-hosted both daemon binaries (hostname change).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Two bugs surfaced running the daemon on a real node:
- Linking cm-sandbox (bollard) brought a second rustls provider into the graph,
so rustls couldn't auto-pick one and panicked at the WSS TLS handshake. Install
the ring provider explicitly at startup (rustls dep + install_default()).
- The daemon auto-ran `tailscale set --ssh`, which tries to reroute the user's
live SSH session and aborts ("will result in your session disconnecting"). Now
Tailscale is only touched when an auth key is explicitly passed (opt-in), with
--accept-risk=lose-ssh to avoid the interactive abort.
Rebuilt + re-hosted both binaries (linux-amd64, darwin-arm64).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Agents can now provision their sandbox on a connected fleet node instead of the
gateway host. Local stays the strict default, so existing agents are byte-for-
byte unaffected until explicitly placed elsewhere.
Security parity: the daemon links the REAL cm-sandbox DockerDriver and runs the
typed container ops (sb_provision/sb_exec/sb_destroy/sb_health/sb_list) through
it — identical hardening (cap-drop ALL, seccomp, no-net, read-only, non-root) to
local sandboxes. cm-sandbox spec types are now Serialize/Deserialize so the spec
crosses the channel.
- cm-api: RemoteDriver (impl SandboxDriver over the node channel) + HubDriverProvider
(impl cm_runtime::NodeDriverProvider, hands out a driver only for connected
nodes via a sync online set) + NodeHub.call/is_connected. AppState.with_node_hub
so the hub is shared with the placement provider.
- cm-runtime SandboxManager: driver_for(node_id) routes by the recorded
agent_containers.node_id (local default = existing driver, identical path);
placement_node() reads the workspace setting and falls back to local if the
node is offline; exec/release route accordingly. NodeDriverProvider trait.
- DB: 0020_workspace_placement + repo (for_agent/get/set/clear).
- main.rs: build the NodeHub first; inject HubDriverProvider into the agent
manager + share the hub with AppState.
- API+UI: GET/PUT /api/fleet/placement + a "Run agents on: Local / <node>"
selector in the Fleet overview.
Note: a node must be able to pull the agent image (the daemon docker-pulls it);
interactive PTY for agent containers on remote nodes is not wired (Terminal app
stays local) — the in-dashboard node shell already covers host access.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Proves a connected node can host hardened agent workloads end-to-end, without
touching the agent run loop (zero blast radius on existing agents).
- Daemon: typed `sb_check` op — pulls a tiny image and runs it fully locked down
(cap-drop ALL, no-new-privileges, no network, read-only rootfs, non-root,
memory/pids caps), then tears it down. Fixed command; nothing caller-supplied
runs (preserves the exec-hardening invariant).
- cm-api: NodeHub.sandbox_check + POST /api/nodes/{id}/sandbox-check.
- UI: a shield "sandbox check" button on each online node card streams the
result (✓ SANDBOX READY + container id/uname).
This validates the full provision→run→destroy mechanism on nodes. The remaining
P2 work — wiring real agent deploys to auto-place onto nodes — is its own
subsystem (a RemoteDriver reusing the local DockerDriver for security parity,
agent-image distribution to nodes, and node-routing in SandboxManager) and is
best done as a focused pass; it is intentionally NOT bundled here to keep the
core agent path untouched.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
You can now open a real shell on any connected node from the dashboard — the
daemon spawns a host PTY and streams it over the existing outbound control
channel (no inbound port, no Tailscale brokering needed).
Daemon:
- portable-pty host shell sessions: pty_open/pty_in/pty_resize/pty_close ops; a
reader thread streams base64 pty_out frames. Outbound frames now funnel through
one mpsc channel so PTY output and heartbeats interleave.
cm-api NodeHub:
- per-connection pty_sinks + sid multiplexing; open_terminal/terminal_input/
terminal_resize/terminal_close; in-memory single-use terminal tickets (the
browser WS can't carry a bearer, and the session is instance-local anyway).
- routes/nodes.rs: POST /api/nodes/{id}/terminal/ticket + GET .../terminal/ws
(bridges browser xterm <-> node PTY: binary = keystrokes, text = resize).
Frontend:
- NodeTerminal xterm modal (reuses the agent Terminal's xterm setup); a Terminal
button on each online node card opens a shell.
This proves the bidirectional streaming-over-channel mechanism the RemoteDriver
will reuse. Remaining P2: RemoteDriver + placement (run agent workloads on nodes).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Security hardening:
- The gateway no longer sends arbitrary shell to nodes. The WSS exec op is
replaced by a typed `verify` op the daemon runs itself (fixed host+docker
check); future container ops are typed too. cm-api NodeHub.verify() + the
daemon's handle_command only dispatches vetted ops.
BYO Tailscale:
- migrations/0019_workspace_tailscale.sql + cm-db fleet_tailscale repo (store the
user's Tailscale API key + tailnet, server-side only).
- cm-api routes/tailscale.rs: POST/GET/DELETE /api/fleet/tailscale + GET
/api/fleet/tailscale/devices (proxies api.tailscale.com device list).
- Daemon: --tailscale-authkey → `tailscale up --authkey … --ssh` (enables
Tailscale SSH for keyless user access); else `tailscale set --ssh=true`. Reports
its tailscale IP (already).
UI:
- Fleet overview gains a Tailscale section: connect (key+tailnet) + live tailnet
device status (online/last-seen/IP/os). Node cards show a copyable Tailscale SSH
target (ssh <ip>).
Remaining: P2 — RemoteDriver + placement (run agents on nodes) and the in-UI
remote terminal (PTY proxied over the WSS channel).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
