100 lines
3.8 KiB
Markdown
100 lines
3.8 KiB
Markdown
# Execd Input Plugin
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This plugin runs the given external program as a long-running daemon and collects
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the metrics in one of the supported [data formats][data_formats] on the
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process's `stdout`. The program is expected to stay running and output data
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when receiving the configured `signal`.
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The `stderr` output of the process will be relayed to Telegraf's logging
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facilities and will be logged as _error_ by default. However, you can log to
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other levels by prefixing your message with `E!` for error, `W!` for warning,
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`I!` for info, `D!` for debugging and `T!` for trace levels followed by a space
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and the actual message. For example outputting `I! A log message` will create a
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`info` log line in your Telegraf logging output.
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⭐ Telegraf v1.14.0
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🏷️ system
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💻 all
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[data_formats]: /docs/DATA_FORMATS_INPUT.md
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## Service Input <!-- @/docs/includes/service_input.md -->
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This plugin is a service input. Normal plugins gather metrics determined by the
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interval setting. Service plugins start a service to listen and wait for
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metrics or events to occur. Service plugins have two key differences from
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normal plugins:
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1. The global or plugin specific `interval` setting may not apply
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2. The CLI options of `--test`, `--test-wait`, and `--once` may not produce
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output for this plugin
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## Global configuration options <!-- @/docs/includes/plugin_config.md -->
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In addition to the plugin-specific configuration settings, plugins support
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additional global and plugin configuration settings. These settings are used to
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modify metrics, tags, and field or create aliases and configure ordering, etc.
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See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
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[CONFIGURATION.md]: ../../../docs/CONFIGURATION.md#plugins
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## Configuration
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```toml @sample.conf
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# Run executable as long-running input plugin
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[[inputs.execd]]
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## One program to run as daemon.
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## NOTE: process and each argument should each be their own string
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command = ["telegraf-smartctl", "-d", "/dev/sda"]
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## Environment variables
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## Array of "key=value" pairs to pass as environment variables
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## e.g. "KEY=value", "USERNAME=John Doe",
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## "LD_LIBRARY_PATH=/opt/custom/lib64:/usr/local/libs"
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# environment = []
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## Define how the process is signaled on each collection interval.
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## Valid values are:
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## "none" : Do not signal anything. (Recommended for service inputs)
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## The process must output metrics by itself.
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## "STDIN" : Send a newline on STDIN. (Recommended for gather inputs)
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## "SIGHUP" : Send a HUP signal. Not available on Windows. (not recommended)
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## "SIGUSR1" : Send a USR1 signal. Not available on Windows.
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## "SIGUSR2" : Send a USR2 signal. Not available on Windows.
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# signal = "none"
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## Delay before the process is restarted after an unexpected termination
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# restart_delay = "10s"
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## Buffer size used to read from the command output stream
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## Optional parameter. Default is 64 Kib, minimum is 16 bytes
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# buffer_size = "64Kib"
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## Disable automatic restart of the program and stop if the program exits
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## with an error (i.e. non-zero error code)
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# stop_on_error = false
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## Data format to consume.
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## Each data format has its own unique set of configuration options, read
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## more about them here:
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## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
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# data_format = "influx"
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```
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## Example
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See the examples directory for basic examples in different languages expecting
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various signals from Telegraf:
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- [Go](./examples/count.go): Example expects `signal = "SIGHUP"`
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- [Python](./examples/count.py): Example expects `signal = "none"`
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- [Ruby](./examples/count.rb): Example expects `signal = "none"`
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- [shell](./examples/count.sh): Example expects `signal = "STDIN"`
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## Metrics
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Varies depending on the users data.
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## Example Output
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Varies depending on the users data.
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