Execd Input Plugin

This plugin runs the given external program as a long-running daemon and collects the metrics in one of the supported data formats on the process’s stdout. The program is expected to stay running and output data when receiving the configured signal.

The stderr output of the process will be relayed to Telegraf’s logging facilities and will be logged as error by default. However, you can log to other levels by prefixing your message with E! for error, W! for warning, I! for info, D! for debugging and T! for trace levels followed by a space and the actual message. For example outputting I! A log message will create a info log line in your Telegraf logging output.

Introduced in: Telegraf v1.14.0 Tags: system OS support: all

Service Input

This plugin is a service input. Normal plugins gather metrics determined by the interval setting. Service plugins start a service to listen and wait for metrics or events to occur. Service plugins have two key differences from normal plugins:

1. The global or plugin specific interval setting may not apply
2. The CLI options of --test, --test-wait, and --once may not produce output for this plugin

Global configuration options

In addition to the plugin-specific configuration settings, plugins support additional global and plugin configuration settings. These settings are used to modify metrics, tags, and field or create aliases and configure ordering, etc. See the CONFIGURATION.md for more details.

Configuration

# Run executable as long-running input plugin
[[inputs.execd]]
  ## One program to run as daemon.
  ## NOTE: process and each argument should each be their own string
  command = ["telegraf-smartctl", "-d", "/dev/sda"]

  ## Environment variables
  ## Array of "key=value" pairs to pass as environment variables
  ## e.g. "KEY=value", "USERNAME=John Doe",
  ## "LD_LIBRARY_PATH=/opt/custom/lib64:/usr/local/libs"
  # environment = []

  ## Define how the process is signaled on each collection interval.
  ## Valid values are:
  ##   "none"    : Do not signal anything. (Recommended for service inputs)
  ##               The process must output metrics by itself.
  ##   "STDIN"   : Send a newline on STDIN. (Recommended for gather inputs)
  ##   "SIGHUP"  : Send a HUP signal. Not available on Windows. (not recommended)
  ##   "SIGUSR1" : Send a USR1 signal. Not available on Windows.
  ##   "SIGUSR2" : Send a USR2 signal. Not available on Windows.
  # signal = "none"

  ## Delay before the process is restarted after an unexpected termination
  # restart_delay = "10s"

  ## Buffer size used to read from the command output stream
  ## Optional parameter. Default is 64 Kib, minimum is 16 bytes
  # buffer_size = "64Kib"

  ## Disable automatic restart of the program and stop if the program exits
  ## with an error (i.e. non-zero error code)
  # stop_on_error = false

  ## 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 = "influx"

Example

See the examples directory for basic examples in different languages expecting various signals from Telegraf:

• Go: Example expects signal = "SIGHUP"
• Python: Example expects signal = "none"
• Ruby: Example expects signal = "none"
• shell: Example expects signal = "STDIN"

Metrics

Varies depending on the users data.

Example Output

Varies depending on the users data.