ctld Exporter

Prometheus exporter for ctld (CAM Target Layer / iSCSI target daemon) This exporter uses CGO to get the data (part of the C code is taken from ctlstat and ctladm). It is planned to remove CGO use in future version.

The exported metrics are the data available using ctlstat and matched against target and LUN id within that target.

Installation

You can build the latest version using Go v1.11+ on FreeBSD via go get:

go get -u github.com/Gandi/ctld_exporter

Usage

usage: ctld_exporter [<flags>]

Flags:
  -h, --help              Show context-sensitive help (also try --help-long and --help-man).
      --web.listen-address=":9572"
                          Address on which to expose metrics and web interface.
      --web.telemetry-path="/metrics"
                          Path under which to expose metrics.
      --log.level="info"  Only log messages with the given severity or above. Valid levels: [debug, info,
                          warn, error, fatal]
      --log.format="logger:stderr"
                          Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or
                          "logger:stdout?json=true"
      --version           Show application version.

Caveats

This exporter NEEDS to be build on FreeBSD with access to core source (expected location is /usr/src/). The exporter must have r/w access to /dev/cam/ctl thus needing root privileges.