🦔 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)