[root@ec2 telegraf]# telegraf --version
Telegraf unknown (git: master eb41218f)
[root@ec2 telegraf]# cat telegraf.conf
# 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})


# 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"

  ## 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"

  ## 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.
  ## Valid time units are "ns", "us" (or "µs"), "ms", "s".
  precision = ""

  ## 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 = "0d"

  ## 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 = true

###############################################################################
#                            OUTPUT PLUGINS                                   #
###############################################################################


...
...
...


###############################################################################
#                            INPUT PLUGINS                                    #
###############################################################################


# Pull Metric Statistics from Amazon CloudWatch
[[inputs.cloudwatch]]
  ## Amazon Region
  region = "us-east-1"

  ## Amazon Credentials
  ## Credentials are loaded in the following order
  ## 1) Web identity provider credentials via STS if role_arn and web_identity_token_file are specified
  ## 2) Assumed credentials via STS if role_arn is specified
  ## 3) explicit credentials from 'access_key' and 'secret_key'
  ## 4) shared profile from 'profile'
  ## 5) environment variables
  ## 6) shared credentials file
  ## 7) EC2 Instance Profile
  access_key = "<access_key>"
  secret_key = "<secret_key>"
  # token = ""
  # role_arn = ""
  # web_identity_token_file = ""
  # role_session_name = ""
  # profile = ""
  # shared_credential_file = ""

  ## Endpoint to make request against, the correct endpoint is automatically
  ## determined and this option should only be set if you wish to override the
  ## default.
  ##   ex: endpoint_url = "http://localhost:8000"
  # endpoint_url = ""

  ## Set http_proxy (telegraf uses the system wide proxy settings if it's is not set)
  # http_proxy_url = "http://localhost:8888"

  # The minimum period for Cloudwatch metrics is 1 minute (60s). However not all
  # metrics are made available to the 1 minute period. Some are collected at
  # 3 minute, 5 minute, or larger intervals. See https://aws.amazon.com/cloudwatch/faqs/#monitoring.
  # Note that if a period is configured that is smaller than the minimum for a
  # particular metric, that metric will not be returned by the Cloudwatch API
  # and will not be collected by Telegraf.
  #
  ## Requested CloudWatch aggregation Period (required - must be a multiple of 60s)
  period = "5m"

  ## Collection Delay (required - must account for metrics availability via CloudWatch API)
  delay = "1m"

  ## Recommended: use metric 'interval' that is a multiple of 'period' to avoid
  ## gaps or overlap in pulled data
  interval = "1m"

  ## Recommended if "delay" and "period" are both within 3 hours of request time. Invalid values will be ignored.
  ## Recently Active feature will only poll for CloudWatch ListMetrics values that occurred within the last 3 Hours.
  ## If enabled, it will reduce total API usage of the CloudWatch ListMetrics API and require less memory to retain.
  ## Do not enable if "period" or "delay" is longer than 3 hours, as it will not return data more than 3 hours old.
  ## See https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_ListMetrics.html
  #recently_active = "PT3H"

  ## Configure the TTL for the internal cache of metrics.
  # cache_ttl = "1h"

  ## Metric Statistic Namespaces (required)
  namespaces = ["AWS/EC2","AWS/ELB"]
  # A single metric statistic namespace that will be appended to namespaces on startup
  # namespace = "AWS/ELB"

  ## Maximum requests per second. Note that the global default AWS rate limit is
  ## 50 reqs/sec, so if you define multiple namespaces, these should add up to a
  ## maximum of 50.
  ## See http://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_limits.html
  # ratelimit = 25

  ## Timeout for http requests made by the cloudwatch client.
  # timeout = "5s"

  ## Namespace-wide statistic filters. These allow fewer queries to be made to
  ## cloudwatch.
  # statistic_include = [ "average", "sum", "minimum", "maximum", sample_count" ]
  # statistic_exclude = []

  ## Metrics to Pull
  ## Defaults to all Metrics in Namespace if nothing is provided
  ## Refreshes Namespace available metrics every 1h
  #[[inputs.cloudwatch.metrics]]
  #  names = ["Latency", "RequestCount"]
  #
  #  ## Statistic filters for Metric.  These allow for retrieving specific
  #  ## statistics for an individual metric.
  #  # statistic_include = [ "average", "sum", "minimum", "maximum", sample_count" ]
  #  # statistic_exclude = []
  #
  #  ## Dimension filters for Metric.  All dimensions defined for the metric names
  #  ## must be specified in order to retrieve the metric statistics.
  #  ## 'value' has wildcard / 'glob' matching support such as 'p-*'.
  #  [[inputs.cloudwatch.metrics.dimensions]]
  #    name = "LoadBalancerName"
  #    value = "p-example"
[root@ec2 telegraf]# telegraf --config telegraf.conf --debug
2021-08-16T11:57:25Z I! Starting Telegraf
2021-08-16T11:57:25Z I! Loaded inputs: cloudwatch
2021-08-16T11:57:25Z I! Loaded aggregators:
2021-08-16T11:57:25Z I! Loaded processors:
2021-08-16T11:57:25Z I! Loaded outputs: http
2021-08-16T11:57:25Z I! Tags enabled:
2021-08-16T11:57:25Z I! [agent] Config: Interval:10s, Quiet:false, Hostname:"", Flush Interval:10s
2021-08-16T11:57:25Z D! [agent] Initializing plugins
2021-08-16T11:57:25Z D! [agent] Connecting outputs
2021-08-16T11:57:25Z D! [agent] Attempting connection to [outputs.http]
2021-08-16T11:57:25Z D! [agent] Successfully connected to outputs.http
2021-08-16T11:57:25Z D! [agent] Starting service inputs
2021-08-16T11:57:35Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
2021-08-16T11:57:45Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
2021-08-16T11:57:55Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
2021-08-16T11:58:00Z E! [inputs.cloudwatch] Error in plugin: InvalidParameterValue: Parameters do not match original request parameters
        status code: 400, request id: bedaf89b-57d9-465d-bd4c-4efb30146ff4
2021-08-16T11:58:05Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
2021-08-16T11:58:15Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
2021-08-16T11:58:25Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
^C2021-08-16T11:58:33Z D! [agent] Stopping service inputs
2021-08-16T11:58:33Z D! [agent] Input channel closed
2021-08-16T11:58:33Z I! [agent] Hang on, flushing any cached metrics before shutdown
2021-08-16T11:58:33Z D! [outputs.http] Buffer fullness: 0 / 10000 metrics
2021-08-16T11:58:33Z I! [agent] Stopping running outputs
2021-08-16T11:58:33Z D! [agent] Stopped Successfully