Antikörper

Antikörper is meant to be a lightweight data collection tool.

It's basic idea is to collect data from your PC. You can then simply let it write to files or send metrics to an influxdb-server!

Possible applications:

• Battery Usage
• Analyze your own PC usage (Which programs are focused when your PC is not idle?)
• Time spent listening to Music
• Anything you can think of!

Naming

The name Antikörper is german for antibody. The idea is that it is there, in the background, easily forgotten, but nonetheless busy and useful.

Config File

The config file is a simple toml file that is read at program start. It allows you to specify which aspects of your Computer should be monitored and in which intervals.

A sample config with all options used:

[general]
# shell used for Items with type = "shell"
shell = "/usr/bin/bash"

[[output]]
# writes data to files in the directory /tmp/antikoerper
type = "file"
base_path = "/tmp/antikoerper"
# always write the raw, "undigested" result
always_write_raw = true

[[output]]
type = "influxdb"
# all other options for influxdb are optional/have defaults
url = "http://localhost:8086"
database = "antikoerper"
username = "someuser"
password = "somepassword"
# write raw results in influxdb if no metrics could be parsed
use_raw_as_fallback = false
# write raw results in influxdb
always_write_raw = false

[[items]]
key = "os.battery"
interval = 60
input.type = "command"
input.path = "acpi"
# digest.type = "raw" # no digest

[[items]]
key = "os.usage"
interval = 1
input.type = "file"
input.path = "/proc/loadavg"
digest.type = "regex"
digest.regex = '(?P<load1m>\d+\.\d\d)\s(?P<load5m>\d+\.\d\d)\s(?P<load15m>\d+\.\d\d)'

[[items]]
key = "os.memory"
interval = 60
env = { LANG = "C" }
input.type = "shell"
input.script = "free | grep 'Mem:'"
digest.type = "regex"
digest.regex = '.*\s+(?P<total>\d+)\s+(?P<used>\d+)\s+(?P<free>\d+)\s+(?P<shared>\d+)\s+(?P<cache>\d+)\s+(?P<avail>\d+)"'

[[items]]
key = "workstation.os.procs"
interval = 30
input.type = "command"
input.path = "check_procs"
digest.type = "monitoring-plugin"

Section general

• shell, the default shell is /bin/sh. If you want to use another one, specify it here.

Section/List output

• type = "file", write data into files below base_path.
• type = "influxdb", write data to a running influxdb-server.

multiple possible, data can be sent to both files and influxdb-servers, and multiple of those if necessary.

Section/List items

Each item needs to have these keys:

• key, the key of the value that the programm will return.
• interval, the interval between two 'runs'
• env, a table to set environment-variables for input types shell and command.
• input with type either "file" OR "shell" OR "command".
  • "file" takes a path
  • "shell" takes a script
  • "command" takes a path, and, optionally, an array of args
• digest with type either "raw" (the default), "regex" or "monitoring-plugin".
  • "regex" takes a regex-String (I recommend using '' to avoid escapes)
  • "monitoring-plugin" may not work for all output of monitoring-plugins

Output

The keys of Items are the basename for all metrics created by an Item. The key is extended as follows:

• with .raw if the raw-value is written
• digest.type = "raw":
  • with .parsed if a f64-value could be parsed
• digest.type = "regex":
  • with .<named-capture-group> for every named capture group ((?P<name>...)) in the provided regex
• digest.type = "monitoring-plugin":
  • with .<label> for every label in the performance-metric output of a monitoring plugin.
  • with.<label>.warn or .crit or .min or .max if the performance- metric output of a monitoring plugin provided those.

LICENSE

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Copyright (C) 2016 Marcel Müller (neikos at neikos.email)