claudetools/wiki/systems/pluto.md

type, name, display_name, last_compiled, compiled_by, sources, backlinks

type	name	display_name	last_compiled	compiled_by	sources	backlinks
system	pluto	Pluto (Claude-Builder)	2026-05-24	DESKTOP-0O8A1RL/claude-main	.claude/machines/pluto.md credentials.md wiki/projects/gururmm.md	projects/gururmm systems/jupiter systems/gururmm-build

Pluto (Claude-Builder)

Identity

• Hostname: Pluto / Claude-Builder
• IP: 172.16.3.36
• Role: Windows MSI and cargo build server for GuruRMM — the only machine in the fleet that produces Windows agent binaries and WiX MSI installers
• Location: virsh VM on Jupiter (172.16.3.20), domain name "Claude-Builder"
• OS: Windows Server 2019 Standard
• SSH user: Administrator

Specs

Windows Server 2019 VM. Exact vCPU/vRAM allocation managed via virsh on Jupiter — not documented separately.

Services

Pluto is not a general-purpose server. It has no web services, no Claude Code, no vault, no coord API. It exists solely to run builds when build-windows.sh SSHes in.

Access

• SSH from gururmm-build (172.16.3.30):

  ssh -o StrictHostKeyChecking=yes \
      -o UserKnownHostsFile=/opt/gururmm/pluto_known_hosts \
      Administrator@172.16.3.36
  

• Known-hosts file: /opt/gururmm/pluto_known_hosts — three pinned keys (RSA, ECDSA, ED25519) for 172.16.3.36. Never use StrictHostKeyChecking=no — a MITM would inject malicious binaries into MSI artifacts.
• To update pinned keys (e.g. after OS reinstall): ssh-keyscan 172.16.3.36 > /opt/gururmm/pluto_known_hosts
• SSH from DESKTOP-0O8A1RL: Uses a different network path than from gururmm-build — one failing does not imply the other fails.

Build Tools

Tool	Path
cargo (Rust stable 1.95.0)	C:\Users\Administrator\.cargo\bin\cargo.exe
cargo (Rust 1.77, legacy)	Pinned for legacy Windows 7/Vista targets; used with --ignore-rust-version
rustup	C:\Users\Administrator\.cargo\bin\rustup.exe
WiX 4	C:\Users\Administrator\.dotnet\tools\wix.exe
sccache	C:\sccache\ — compiler cache; near-instant rebuilds when source unchanged
Git	Standard PATH
Gitea clone	C:\gururmm\ — pulled from https://azcomputerguru@git.azcomputerguru.com/azcomputerguru/gururmm.git

What Pluto Builds (in order, per trigger)

1. git pull (build-windows.sh does this via SSH before cargo)
2. cargo build --release --target x86_64-pc-windows-msvc          → stable x64
3. cargo build --features debug-agent --target x86_64-pc-windows-msvc  → debug x64
4. cargo build --release --target i686-pc-windows-msvc             → stable x86
5. cargo build --release --target x86_64-pc-windows-msvc (legacy profile, --ignore-rust-version) → legacy x64
6. cargo build --release --target i686-pc-windows-msvc  (legacy profile, --ignore-rust-version)  → legacy x86
7. wix build → GuruRMM-<version>-x64.msi

All five cargo runs are sequential. MSI is built after all binaries complete.

Output Artifacts (on Pluto)

Artifact	Path
Agent EXE (x64)	C:\gururmm\target\x86_64-pc-windows-msvc\release\gururmm-agent.exe
Agent EXE (x86)	C:\gururmm\target\i686-pc-windows-msvc\release\gururmm-agent.exe
Tray EXE	C:\gururmm\target\x86_64-pc-windows-msvc\release\gururmm-tray.exe
MSI	C:\gururmm\target\wix\GuruRMM-<version>-x64.msi

build-windows.sh SCPs these to gururmm-build's /var/www/gururmm/downloads/ after build completes.

Build Trigger Rules

A Pluto build is initiated only when:

1. A push to main hits the Gitea webhook (172.16.3.30:9000)
2. build-shared.sh succeeds (version bump + git sync)
3. The diff between new SHA and last-built-commit-windows includes changes under agent/ (excluding agent/Cargo.lock)

If only server/, dashboard/, or docs changed — Pluto is not contacted.

Windows build lock: /var/run/gururmm-build-windows.lock on gururmm-build prevents concurrent builds.

Known Issues & Quirks

• sccache makes short builds look like failures — a 1-second Windows build is normal when agent/ source hasn't changed since the last successful build. Do not interpret speed as failure.
• Do not SSH to Pluto manually to trigger builds — all builds go through the Gitea webhook pipeline. Manual SSH is for diagnostics only.
• If Pluto appears unreachable from DESKTOP — verify from gururmm-build (172.16.3.30) first. Different network paths; DESKTOP is not on the same LAN segment.
• WiX MSI cannot be built on Linux — WiX requires msi.dll. This is the sole reason Pluto exists.
• path.find('\\') in #[cfg(windows)] files — a literal backslash in a char literal compiles silently on Linux but fails with "unterminated char literal" on Pluto's MSVC build. Use '\\\\' instead.

Backlinks

• projects/gururmm — Pluto is the exclusive Windows MSI build machine for GuruRMM
• systems/jupiter — Pluto is a virsh VM hosted on Jupiter
• systems/gururmm-build — build-windows.sh on gururmm-build SSHes here to trigger builds