Explicitly name the config file as an example

config.toml.example

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+# Telegraf configuration
+
+# If this file is missing an [agent] section, you must first generate a
+# valid config with 'telegraf -sample-config > telegraf.toml'
+
+# Telegraf is entirely plugin driven. All metrics are gathered from the
+# declared plugins.
+
+# Even if a plugin has no configuration, it must be declared in here
+# to be active. Declaring a plugin means just specifying the name
+# as a section with no variables. To deactivate a plugin, comment
+# out the name and any variables.
+
+# Use 'telegraf -config telegraf.toml -test' to see what metrics a config
+# file would generate.
+
+# One rule that plugins conform to is wherever a connection string
+# can be passed, the values '' and 'localhost' are treated specially.
+# They indicate to the plugin to use their own builtin configuration to
+# connect to the local system.
+
+# NOTE: The configuration has a few required parameters. They are marked
+# with 'required'. Be sure to edit those to make this configuration work.
+
+# Configuration for influxdb server to send metrics to
+[influxdb]
+# The full HTTP endpoint URL for your InfluxDB instance
+url = "http://localhost:8086" # required.
+
+# The target database for metrics. This database must already exist
+database = "telegraf" # required.
+
+# username = "telegraf"
+# password = "metricsmetricsmetricsmetrics"
+
+# Set the user agent for the POSTs (can be useful for log differentiation)
+# user_agent = "telegraf"
+# tags = { "dc": "us-east-1" }
+
+# Tags can also be specified via a normal map, but only one form at a time:
+
+# [influxdb.tags]
+# dc = "us-east-1"
+
+# Configuration for telegraf itself
+# [agent]
+# interval = "10s"
+# debug = false
+# hostname = "prod3241"
+
+# PLUGINS
+
+# Read metrics about cpu usage
+[cpu]
+  # no configuration
+
+# Read metrics about disk usage by mount point
+[disk]
+  # no configuration
+
+# Read metrics about docker containers
+[docker]
+  # no configuration
+
+# Read metrics about disk IO by device
+[io]
+  # no configuration
+
+# Read metrics about memory usage
+[mem]
+  # no configuration
+
+# Read metrics from one or many mysql servers
+[mysql]
+
+# specify servers via a url matching:
+#  [username[:password]@][protocol[(address)]]/[?tls=[true|false|skip-verify]]
+#  e.g. root:root@http://10.0.0.18/?tls=false
+#
+# If no servers are specified, then localhost is used as the host.
+servers = ["localhost"]
+
+# Read metrics about network interface usage
+[net]
+
+# By default, telegraf gathers stats from any up interface (excluding loopback)
+# Setting interfaces will tell it to gather these explicit interfaces,
+# regardless of status.
+#
+# interfaces = ["eth0", ... ]
+
+# Read metrics from one or many postgresql servers
+[postgresql]
+
+# specify servers via an array of tables
+[[postgresql.servers]]
+
+# specify address via a url matching:
+#   postgres://[pqgotest[:password]]@localhost?sslmode=[disable|verify-ca|verify-full]
+# or a simple string:
+#   host=localhost user=pqotest password=... sslmode=...
+# 
+# All connection parameters are optional. By default, the host is localhost
+# and the user is the currently running user. For localhost, we default
+# to sslmode=disable as well.
+# 
+
+address = "sslmode=disable"
+
+# A list of databases to pull metrics about. If not specified, metrics for all
+# databases are gathered.
+
+# databases = ["app_production", "blah_testing"]
+
+# [[postgresql.servers]]
+# address = "influx@remoteserver"
+
+# Read metrics from one or many redis servers
+[redis]
+
+# An array of address to gather stats about. Specify an ip on hostname
+# with optional port. ie localhost, 10.10.3.33:18832, etc.
+#
+# If no servers are specified, then localhost is used as the host.
+servers = ["localhost"]
+
+# Read metrics about swap memory usage
+[swap]
+  # no configuration
+
+# Read metrics about system load
+[system]
+  # no configuration
+