Ham Lab

Web-based Linux management console for bare-metal Linux, in the style of the Proxmox web UI. Named after Ham the cat (see also HamTV).

Status: v0.1 — persistent web terminals and a live Dashboard tab. Scope and roadmap in PLAN.md.

Runs on any Linux box

One static Go binary with the UI embedded: no cgo, no libc, no Node at runtime, no agents. The same file runs on Debian, Ubuntu, Fedora, RHEL/Rocky/Alma, openSUSE, Arch and Alpine (musl), on bare metal, VMs and containers. Builds: amd64, arm64, arm (ARMv6 hard-float and up, so every Raspberry Pi), 386, riscv64.

sudo ./hamlab-linux-amd64 install          # that's the whole install

or, from wherever make release output is served:

curl -fsSL https://hamlab-demo.bigham.dev/install.sh | sh        # asks: user, address, HTTPS, firewall, password
curl -fsSL https://hamlab-demo.bigham.dev/install.sh | sh -s -- --yes                              # asks nothing, all defaults
curl -fsSL https://hamlab-demo.bigham.dev/install.sh | sh -s -- --listen 0.0.0.0:8100 --tls auto   # flags go to `hamlab install`

install.sh is a wizard when there is a terminal (it reads answers from /dev/tty, so it works piped from curl) and silent otherwise. Either way it picks the build for uname -m, checks it against SHA256SUMS and runs hamlab install; re-running it upgrades in place. make publish puts a release where that URL serves it (HAMLAB_URL points it elsewhere); run it beside the hamlab-linux-* files and it installs offline. hamlab install:

• copies the binary to /usr/local/bin (--prefix), atomically;
• gets root through sudo or doas if you aren't root already, and runs the console as you (--user), so terminals are your login shell with your rights;
• writes the config to ~/.config/hamlab/ (--data; an existing ~/apps/hamlab/ is kept) and asks for the login password, or generates one and prints it once (--password-stdin for scripts);
• registers a boot-time service with systemd or OpenRC, naming only groups that exist on the host, and waits for /healthz; with neither init it prints the one line to put under your own supervisor;
• says so when firewalld or ufw will block the port (--open-firewall opens it).

Re-running it upgrades in place and keeps config, user and password. hamlab uninstall [--purge] reverses it.

What adapts to the host, rather than assuming Debian:

Root	already root, else passwordless sudo, else passwordless doas; without any, the console is read-only where root is needed and says so
Updates tab	apt, dnf, zypper, pacman, apk: list, refresh, upgrade, install (pacman: all or nothing)
Services / timers	systemd of any age (JSON output where it exists, the plain table before v246); a clear message on hosts without systemd
Disks	lsblk, or /sys/block when it's missing (busybox) or too old; SMART and ZFS only when their tools are there
Dashboard	/proc and /sys only: hwmon or thermal-zone temps, fans, NICs, disks, mounts; empty sections where the hardware has nothing to report. UPS from whichever of pwrstat, NUT (upsc) or apcupsd is installed
Listen address	bound with IP_FREEBIND, so a LAN address that isn't up yet at boot doesn't fail the start
Self-update	the new build must run and load this host's config before it replaces the old one; atomic rename; the daemon then re-execs itself, so it restarts the same way under systemd, OpenRC or nothing; hamlab.prev kept

Building: make build (web + Go), make release (every architecture, install.sh and SHA256SUMS in dist/), make test.

Terminals run as the user the service runs as, with that user's login shell.

Managing several machines

Install Ham Lab on each host; on the ones the hub should reach: hamlab install --listen <lan-ip>:8100 --tls auto (a self-signed certificate is generated on first start). Then on the hub, open Machines, enter a name, the address (https://host:8100) and that machine's Ham Lab password once. The hub pins the certificate, keeps an access token, and every tab works against the chosen machine through the switcher at the top of the rail.

Updating: make deploy on the hub installs the new build there and then pushes it to every managed machine (hamlab push-nodes), which install it and restart. The Machines page flags machines running an older version and offers the same push per machine. Mixed architectures are fine: make deploy also cross-compiles every other architecture, and the hub sends each machine the build for its own.

• On core it is public at https://hamlab.bigham.dev behind Nginx Proxy Manager.
• Installable as a PWA.