cairnobs/docs/phase-1-runbook.md

Phase 1 runbook

Extends /docs/phase-0-runbook.md with Windows log collection and full-text search. Read that one first — this assumes the Phase 0 stack (dev certs, docker compose up, backend sanity check) already works; Phase 1 layers on top of it, doesn't replace it.

What's actually been verified vs. what needs real Windows

Unlike Phase 0's original draft, most of this runbook reflects steps actually run in this session against a live stack, not just planned:

• Verified for real: the full Linux pipeline through search (agent → ingest's record_id assignment → Redpanda → both consumers → ClickHouse and Tantivy → both /query and /search → the same record_id back from both). The windows-fixture generator sending Windows-shaped data through the same pipeline and being correctly queryable both ways, including winevt.* attributes and severity mapping.
• Not verified, and can't be from the environment this was built in: the actual Windows agent binary — EvtSubscribe, ETW session creation, Windows service registration. No Windows toolchain was available anywhere (confirmed: only the Linux target's std library installed, no rustup, no way to even cargo check --target x86_64-pc-windows-*). Part C below is the logical sequence to run on a real or virtualized Windows host, not a report that it's been run.

Prerequisites (beyond Phase 0's)

• A Windows host or VM (Windows 10/11 or Windows Server) for Part C.
• mingw-w64 if cross-compiling the Windows build from Linux (optional — building natively on Windows with rustup target add x86_64-pc-windows-msvc works too and needs no extra setup on the Linux side).
• Administrator access on the Windows host, for service registration and (if you enable it) ETW.

Part A: full-text search (Linux-only, no Windows needed)

Only needs what Phase 0's runbook already set up.

A1. Bring the stack up (if not already)

docker compose up -d --build

Same as Phase 0, now also builds and starts search (Tantivy full-text indexing). Confirm it's actually logging — same RUST_LOG gap the agent has by default:

docker compose logs search

You should see "search gRPC server listening" and rskafka connecting to all of sentry.logs.raw's partitions. If you see nothing at all, check RUST_LOG=info is set on the search service in docker-compose.yml.

A2. Generate a log line and confirm both query paths agree

Follow Phase 0's runbook to get the agent running and generate a test line (steps 4–6 there — mTLS certs, build, run, logger). Then, instead of just checking /query, check both:

curl -X POST http://localhost:8080/query -H 'Content-Type: application/json' \
  -d '{"sql": "SELECT record_id, message FROM logs ORDER BY timestamp DESC LIMIT 1"}'

curl -X POST http://localhost:8080/search -H 'Content-Type: application/json' \
  -d '{"query": "<a distinctive word from your test log line>"}'

The record_id in both responses should match. That's the actual Phase 1 exit criterion (/CLAUDE.md) for the Linux half: the same record, reachable both ways. If /search returns nothing yet, give it a few more seconds — Tantivy commits on a timer (COMMIT_INTERVAL_MS, default 2s), so there's a small window where a record is in ClickHouse but not yet searchable.

A3. Confirm from the web UI

Open http://localhost:3000 — there are now two pages, linked via the top nav: SQL Query (unchanged from Phase 0) and Full-Text Search (new). Run the same free-text term on the search page and confirm you see the row.

Part B: Windows-shaped data without a Windows host

Still no Windows needed — this tests the pipeline's handling of Windows-shaped data, not the real Windows integration (see /hack/windows-fixture/README.md for the exact distinction).

cd hack/windows-fixture
go run . --count 5

Then repeat A2's pattern: query for one of the synthetic events by attributes['winevt.event_id'] via /query, and by a distinctive word from its message via /search. Both should return it, and attributes should carry winevt.event_id/winevt.provider/winevt.channel/ winevt.computer.

Part C: the real Windows agent (needs actual Windows)

C1. Build

On the Windows host itself (simplest — avoids cross-compilation entirely):

rustup target add x86_64-pc-windows-msvc
cd agent
cargo build --release --target x86_64-pc-windows-msvc --no-default-features --features windows-eventlog,etw

Or cross-compile from Linux, then copy the binary over:

rustup target add x86_64-pc-windows-gnu
cargo build --release --target x86_64-pc-windows-gnu --no-default-features --features windows-eventlog,etw

protoc needs to be on PATH either way (used by tonic-build at compile time), same requirement as the Linux build.

C2. Get mTLS certs onto the Windows host

Copy hack/dev-certs/out/{ca,client,client-key}.pem from wherever you ran generate.sh to C:\ProgramData\CairnObsAgent\ on the Windows host (create the directory first). Same dev-only certs Phase 0's Linux agent uses — the CA doesn't care what platform the client is on, only that the client cert was signed by it.

C3. Config

Create C:\ProgramData\CairnObsAgent\agent.toml:

[source]
kind = "eventlog"
channels = ["Application", "System", "Security"]

[ingest]
endpoint = "https://<host-running-docker-compose>:4317"

If Docker Compose runs on a different machine than the Windows host, ingest's server cert SAN needs to cover that hostname/IP too — see hack/dev-certs/generate.sh and regenerate with an updated SAN if needed (same note as Phase 0's runbook's troubleshooting section).

C4. Run it directly first, before installing as a service

$env:RUST_LOG="info"
.\cairnobs-agent.exe --config C:\ProgramData\CairnObsAgent\agent.toml

Confirms the Event Log source and mTLS connection work before adding the Windows service layer on top — if something's wrong, it's much easier to diagnose here than after wrapping it in a service.

C5. Generate a Windows Event Log entry and confirm it flows through

From another PowerShell window (or Event Viewer):

eventcreate /T INFORMATION /ID 1 /L APPLICATION /SO "CairnObsTest" /D "phase1 windows verification line"

Then check both query paths, same pattern as A2.

C6. Install as a service

.\cairnobs-agent.exe install
sc.exe start CairnObsAgent

Verify it's running (sc.exe query CairnObsAgent) and generate another test event to confirm it's still flowing through while running as a service, not just in the foreground. Known gap: no console under the SCM means tracing's log output currently has nowhere to go — see /agent/README.md's "Running as a Windows service" section. If something goes wrong here, you're debugging blind until that's addressed; C4's foreground run is where to diagnose real problems.

sc.exe stop CairnObsAgent
.\cairnobs-agent.exe uninstall

C7 (optional). ETW

Only if you actually want it running — read the privilege section in /agent/README.md first. ETW needs elevated privileges (an administrator token or SeSystemProfilePrivilege), a real consideration for a log-shipping agent, not a formality. Providers are configured by GUID (logman query providers "<Name>" to look one up):

[source]
kind = "etw"
providers = ["{22FB2CD6-0E7B-422B-A0C7-2FAD1FD0E716}"]

C8 (informational). WEF

No new steps — see /agent/README.md's WEF section. The supported pattern is running this same agent (Event Log source) on a Windows Server already acting as a native Windows Event Collector, pointed at the ForwardedEvents channel instead of the usual three. A true agentless WS-Management receiver is explicitly not built in Phase 1.

Troubleshooting (Phase 1-specific)

/search returns nothing but /query finds the record. Check COMMIT_INTERVAL_MS hasn't elapsed yet (default 2s) — Tantivy batches commits, same reasoning as ClickHouse batching inserts. If it's been well over that and still nothing: docker compose logs search — look for "skipping record with empty record_id" (would mean something upstream isn't assigning IDs — shouldn't happen) or connection errors to Redpanda.

Windows agent connects but Event Log entries never show up. Check the channel name is exactly right (Application/System/ Security, case matters to the Windows API) and that the account running the agent has read access to that log — Security specifically often needs elevated rights beyond what Application/System need.

Windows build fails to find protoc. Same requirement as the Linux build — install protoc and ensure it's on PATH before cargo build. On Windows, the official protoc release zip plus adding its bin/ to PATH is the simplest route.

Nothing in this section covers the problem. Genuinely possible — this is the least-tested part of the whole Phase 1 build (see the caveat at the top). Check /agent/README.md's Windows sections for the specific module involved (source/windows_eventlog.rs, source/etw.rs, service.rs) and their own "UNVERIFIED" comments for what's most likely to need a real fix.