telegraf/config/testdata/single_plugin_env_vars.toml

# Telegraf Configuration
#
# Telegraf is entirely plugin driven. All metrics are gathered from the
# declared inputs, and sent to the declared outputs.
#
# Plugins must be declared in here to be active.
# To deactivate a plugin, comment out the name and any variables.
#
# Use 'telegraf -config telegraf.conf -test' to see what metrics a config
# file would generate.
#
# Environment variables can be used anywhere in this config file, simply surround
# them with $${}. For strings the variable must be within quotes (ie, "$${STR_VAR}"),
# for numbers and booleans they should be plain (ie, $${INT_VAR}, $${BOOL_VAR})

[[inputs.memcached]]
  # this comment line will be ignored by the parser
  servers = ["$MY_TEST_SERVER"]
  namepass = ["metricname1", "ip_$${MY_TEST_SERVER}_name"] # this comment will be ignored as well
  namedrop = ["metricname2"]
  fieldpass = ["some", "strings"]
  fielddrop = ["other", "stuff"]
  interval = "$TEST_INTERVAL"
   ##### this input is provided to test multiline strings
  command = """
Raw command which may or may not contain # or ${var} in it
# is unique""" # Multiline comment black starting with #
  [inputs.memcached.tagpass]
    goodtag = ["mytag", """tagwith#value""",
      # comment in between array items
      # should ignore "quotes" in comments
      '''TagWithMultilineSyntax''', ## ignore this comment
    ] # hastag
  [inputs.memcached.tagdrop]
    badtag = ["othertag"]