Updated 9 files to reflect: Management API (axum, port 9090) — embedded in bascule-server Dioxus dashboard components (WASM web target) 6 crates in workspace (was 4) README.md: Added Management API + Dashboard features section Added dashboard row to comparison table docs/architecture.md: Updated diagram showing dual-listener architecture Added Management API section explaining Arc<SessionStore> sharing Updated crate table (6 crates) docs/configuration.md: Added [dashboard] config section reference docs/observability.md: Added Management API monitoring section with curl examples docs/quickstart.md: Added Management API quick start section docs/comparison.md: Added dashboard and TPM attestation rows CLAUDE.md + CONTRIBUTING.md: Updated crate lists and feature flags config/bascule.example.toml: Added [dashboard] section All 17 README links verified valid. Build clean. Signed-off-by: Tyler King <tking@guildhouse.dev>
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Observability
Structured Logging
Bascule logs structured events via the tracing crate. Every log includes session context (session ID, principal, backend, source IP).
JSON format
BASCULE_LOG_FORMAT=json ./bascule --config config.toml
Output:
{"timestamp":"2026-04-04T20:30:00Z","level":"INFO","message":"Auth accepted","method":"ssh-key","principal":"tking","peer":"192.168.1.10:54321"}
{"timestamp":"2026-04-04T20:30:00Z","level":"INFO","message":"Shell session starting","session.id":"abc-123","session.principal":"tking","session.backend":"container","session.source_ip":"192.168.1.10"}
Log levels
RUST_LOG=debug ./bascule --config config.toml # verbose
RUST_LOG=info ./bascule --config config.toml # standard
RUST_LOG=warn ./bascule --config config.toml # quiet
RUST_LOG=bascule=debug ./bascule --config config.toml # debug bascule only
Key Events
| Event | Level | When |
|---|---|---|
| Auth accepted | INFO | SSH authentication succeeds |
| Auth rejected | WARN | SSH authentication fails |
| Shell session starting | INFO | New session with backend type |
| Exec request | INFO | Non-interactive command execution |
| Container spawning | INFO | Container session starting |
| Upstream connected | INFO | Proxy session connected to target |
| Session ended | INFO | Disconnect or exit |
Management API
The built-in management API (port 9090) provides real-time session monitoring:
# Active sessions
curl http://localhost:9090/api/sessions
# Aggregate stats (auth breakdown, TPM %, peak concurrent)
curl http://localhost:9090/api/stats
# Server health
curl http://localhost:9090/api/health
Configure via [dashboard] in your config file. See configuration.md.
OTel Tracing (Planned)
OpenTelemetry OTLP export is planned as an optional feature flag (--features telemetry). Not yet implemented. Session lifecycle will map to OTel spans:
session (root)
├── auth (ssh-key / agent-id)
├── backend_setup (pty / proxy / container)
└── session_active (commands, I/O)
Prometheus Metrics (Planned)
Prometheus-compatible metrics endpoint is planned as --features metrics. Not yet implemented. Planned metrics:
bascule_sessions_total{backend,auth_method,outcome}
bascule_sessions_active
bascule_session_duration_seconds{backend}
bascule_auth_attempts_total{method,outcome}