The code in this repository is in the public domain.

ragent is my Rust learning project (so its implementation sucks; PRs, issues and suggestions welcome).

ragent is my own monitoring agent:

• It works with Nagios (with check_ragent).
• It is as simple and lightweight as possible.

DISCLAIMER

• I am a complete noob on Rust.
• I have no idea about packaging. The rpm and deb are TERRIBLE.

USAGE

$ ragent

will start ragent listening at *:21488.

$ check_ragent http://host:21488/

will contact a ragent instance at http://host:21488/ and generate output/perfdata/return code following Nagios guidelines.

$ check_ragent

will check the local host without using a daemon.

WHAT'S MONITORED

• No filesystem's free space is less than 2 GB or 20% free (warning) or less than 1 GB/10% (critical)
• No filesystem's free inodes are less than 20% free (warning) or less than 10% free (critical)
• No SystemD unit is in failed state (critical, or use --warning-units to define units that will only generate warnings)
• No reboot is required (EL7, EL8, Debian/Ubuntu) (Note that Rocky Linux 8 on Raspberry Pi seems to be affected by this bug that requires manual intervention after reboots)
• Entropy is over a quarter of the pool size (critical) or over half (warning)

BUILDING PACKAGES

See README on packages directory.

Packages are available at:

https://cloudsmith.io/~ragent/repos/ragent/setup/

Packages are tested on EL8 (x86), EL9 (x86 and aarch64), and Debian 12.

MAKING RELEASES

Run cargo release --no-tag major|minor|patch on a branch. Merge the branch. Tag the version commit and push the tag.