🦔 hosthog

Announce which resources you need on collaboratively used linux hosts. Keep other processes away while you have an exclusive lock on the host.

Usage: hosthog [COMMAND]

Commands:
  status   show current claims
  claim    Claim a resource. Fails if already claimed exclusively
  release  prematurely release a claim (removes all of your hogs and exclusive claims)
  hog      Hog the entire host (others will hate you)
  post     post a message to all logged in users
  users    List all logged in users
  help     Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help information
  -V, --version  Print version information

Example:

sudo hosthog claim --exclusive 15min some benchmarks
sudo hosthog hog

For 15 minutes other users will be locked out from ssh and tasks scheduled by systemd are paused.

Implementation status

• claim hosthog maintains a list of claims which time out. You need an exclusive claim to hog the system.
• hog: prevent things from happening that are not related to you
  • Clears all AuthorizedKeysFiles via bind-mounting overlay files. Locked out users receive a hosthog message when they attempt to connect via ssh.
  • Stops all systemd.timers.
• release releases exclusive claims and reverts hog
• users lists active users via who, and ssh sessions with netstat
• post sends a message via wall
• status lists claims

Installation

Optional, but recommended dependencies: at (needed to remove claims on timeout)

User-local installation via cargo: cargo install --path .

Or run it from within a nix shell: nix shell github:pogobanane/hosthog#default (timeouts won't work)