The nagios data format parses the output of nagios plugins.
[[inputs.exec]]
## Commands array
commands = ["/usr/lib/nagios/plugins/check_load -w 5,6,7 -c 7,8,9"]
## Data format to consume.
## Each data format has its own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
data_format = "nagios"