telegraf/plugins/inputs/ping

Ping Input Plugin

Sends a ping message by executing the system ping command and reports the results.

Most ping command implementations are supported, one notable exception being that there is currently no support for GNU Inetutils ping. You may instead use the iputils-ping implementation:

apt-get install iputils-ping

Configuration:

[[inputs.ping]]
  ## List of urls to ping
  urls = ["example.org"]

  ## Number of pings to send per collection (ping -c <COUNT>)
  # count = 1

  ## Interval, in s, at which to ping. 0 == default (ping -i <PING_INTERVAL>)
  ## Not available in Windows.
  # ping_interval = 1.0

  ## Per-ping timeout, in s. 0 == no timeout (ping -W <TIMEOUT>)
  # timeout = 1.0

  ## Total-ping deadline, in s. 0 == no deadline (ping -w <DEADLINE>)
  # deadline = 10

  ## Interface or source address to send ping from (ping -I <INTERFACE/SRC_ADDR>)
  ## on Darwin and Freebsd only source address possible: (ping -S <SRC_ADDR>)
  # interface = ""

  ## Specify the ping executable binary, default is "ping"
  # binary = "ping"

  ## Arguments for ping command
  ## when arguments is not empty, other options (ping_interval, timeout, etc) will be ignored
  # arguments = ["-c", "3"]

File Limit

Since this plugin runs the ping command, it may need to open several files per host. With a large host list you may receive a too many open files error.

To increase this limit on platforms using systemd it must be done in the service file.

Find the service unit file:

$ systemctl show telegraf.service -p FragmentPath
FragmentPath=/lib/systemd/system/telegraf.service

Set the file number limit:

[Service]
LimitNOFILE=4096

Metrics:

• ping
  • tags:
    • url
  • fields:
    • packets_transmitted (integer)
    • packets_received (integer)
    • percent_packets_loss (float)
    • ttl (integer, Not available on Windows)
    • average_response_ms (integer)
    • minimum_response_ms (integer)
    • maximum_response_ms (integer)
    • standard_deviation_ms (integer, Not available on Windows)
    • errors (float, Windows only)
    • reply_received (integer, Windows only)
    • percent_reply_loss (float, Windows only)
    • result_code (int, success = 0, no such host = 1, ping error = 2)

reply_received vs packets_received

On Windows systems, "Destination net unreachable" reply will increment packets_received but not reply_received.

Example Output:

Windows:

ping,url=example.org result_code=0i,average_response_ms=7i,maximum_response_ms=9i,minimum_response_ms=7i,packets_received=4i,packets_transmitted=4i,percent_packet_loss=0,percent_reply_loss=0,reply_received=4i 1469879119000000000

Linux:

ping,url=example.org average_response_ms=23.066,ttl=63,maximum_response_ms=24.64,minimum_response_ms=22.451,packets_received=5i,packets_transmitted=5i,percent_packet_loss=0,result_code=0i,standard_deviation_ms=0.809 1535747258000000000