Move agent sample config into seperate file

[skillor]

Feature Request

Proposal:

I would like to move the default agent config into a seperate file.

Current behavior:

The default agent config is here in the code:

telegraf/config/config.go

Lines 342 to 433 in 9a9f402

	var agentConfig = `
	# Configuration for telegraf agent
	[agent]
	## Default data collection interval for all inputs
	interval = "10s"
	## Rounds collection interval to 'interval'
	## ie, if interval="10s" then always collect on :00, :10, :20, etc.
	round_interval = true
	## Telegraf will send metrics to outputs in batches of at most
	## metric_batch_size metrics.
	## This controls the size of writes that Telegraf sends to output plugins.
	metric_batch_size = 1000
	## Maximum number of unwritten metrics per output. Increasing this value
	## allows for longer periods of output downtime without dropping metrics at the
	## cost of higher maximum memory usage.
	metric_buffer_limit = 10000
	## Collection jitter is used to jitter the collection by a random amount.
	## Each plugin will sleep for a random time within jitter before collecting.
	## This can be used to avoid many plugins querying things like sysfs at the
	## same time, which can have a measurable effect on the system.
	collection_jitter = "0s"
	## Collection offset is used to shift the collection by the given amount.
	## This can be be used to avoid many plugins querying constraint devices
	## at the same time by manually scheduling them in time.
	# collection_offset = "0s"
	## Default flushing interval for all outputs. Maximum flush_interval will be
	## flush_interval + flush_jitter
	flush_interval = "10s"
	## Jitter the flush interval by a random amount. This is primarily to avoid
	## large write spikes for users running a large number of telegraf instances.
	## ie, a jitter of 5s and interval 10s means flushes will happen every 10-15s
	flush_jitter = "0s"
	## Collected metrics are rounded to the precision specified. Precision is
	## specified as an interval with an integer + unit (e.g. 0s, 10ms, 2us, 4s).
	## Valid time units are "ns", "us" (or "µs"), "ms", "s".
	##
	## By default or when set to "0s", precision will be set to the same
	## timestamp order as the collection interval, with the maximum being 1s:
	## ie, when interval = "10s", precision will be "1s"
	## when interval = "250ms", precision will be "1ms"
	##
	## Precision will NOT be used for service inputs. It is up to each individual
	## service input to set the timestamp at the appropriate precision.
	precision = "0s"
	## Log at debug level.
	# debug = false
	## Log only error level messages.
	# quiet = false
	## Log target controls the destination for logs and can be one of "file",
	## "stderr" or, on Windows, "eventlog". When set to "file", the output file
	## is determined by the "logfile" setting.
	# logtarget = "file"
	## Name of the file to be logged to when using the "file" logtarget. If set to
	## the empty string then logs are written to stderr.
	# logfile = ""
	## The logfile will be rotated after the time interval specified. When set
	## to 0 no time based rotation is performed. Logs are rotated only when
	## written to, if there is no log activity rotation may be delayed.
	# logfile_rotation_interval = "0h"
	## The logfile will be rotated when it becomes larger than the specified
	## size. When set to 0 no size based rotation is performed.
	# logfile_rotation_max_size = "0MB"
	## Maximum number of rotated archives to keep, any older logs are deleted.
	## If set to -1, no archives are removed.
	# logfile_rotation_max_archives = 5
	## Pick a timezone to use when logging or type 'local' for local time.
	## Example: America/Chicago
	# log_with_timezone = ""
	## Override default hostname, if empty use os.Hostname()
	hostname = ""
	## If set to true, do no set the "host" tag in the telegraf agent.
	omit_hostname = false
	## Method of translating SNMP objects. Can be "netsnmp" which
	## translates by calling external programs snmptranslate and snmptable,
	## or "gosmi" which translates using the built-in gosmi library.
	# snmp_translator = "netsnmp"
	`

Desired behavior:

It would be better if it is in an extra file (similar to the sample.conf in the plugins).

Use case:

For example I would like to fetch only the default agent config from the Github API.

[srebhan]

PRs are welcome to move those config parts to separate files! :-)

[powersj]

Keep in mind, you can get that data via telegraf config as well.

[skillor]

Also it would be primarily for better code readability and a cleaner repo :)