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probes

README.md

Probes

The default probes provided along the telemetry client code are:

  • bertprobe: this probe reports on the Boot Error Region Table if such entry is found in /sys/firmware/acpi/tables/BERT.

  • crashprobe: This probe processes core dump files. It can be registered as the kernel core file handler in /proc/sys/kernel/core_pattern.

  • hprobe: a simple probe that sends a keep alive message. This probe can also be useful for testing

  • journalprobe: a probe that monitors the systemd journal for log messages from failed services.

  • oopsprobe: a probe to collect 'oops messages' when the kernel detects a problem.

  • pstoreprobe: probe to collect messages left on pstore filesystem.

  • telem-record-gen: this is a "general-purpose probe" for sending custom records on-the-fly. This tool can be used stand alone or as a part of a script to implement a probe.

For example to generate an hprobe like message we can execute the following command:

$ telem-record-gen --class org.example/hello/world --payload hello

for more options use the --help switch i.e.:

$ telem-record-gen --help
Usage:
  telem-record-gen [OPTIONS] - create and send a custom telemetry record

Help Options:
  -h, --help            Show help options

Application Options:
  -f, --config-file     Path to configuration file (not implemented yet)
  -V, --version         Print the program version
  -s, --severity        Severity level (1-4) - (default 1)
  -c, --class           Classification level_1/level_2/level_3
  -p, --payload         Record body (max size = 8k)
  -P, --payload-file    File to read payload from
  -R, --record-version  Version number for format of payload (default 1)
  -e, --event-id        Event id to use in the record