Kafka 和 InfluxDB 集成

[[inputs.kafka_consumer]]
              ## Kafka brokers.
              brokers = ["localhost:9092"]

              ## Set the minimal supported Kafka version. Should be a string contains
              ## 4 digits in case if it is 0 version and 3 digits for versions starting
              ## from 1.0.0 separated by dot. This setting enables the use of new
              ## Kafka features and APIs.  Must be 0.10.2.0(used as default) or greater.
              ## Please, check the list of supported versions at
              ## https://pkg.go.dev/github.com/Shopify/sarama#SupportedVersions
              ##   ex: kafka_version = "2.6.0"
              ##   ex: kafka_version = "0.10.2.0"
              # kafka_version = "0.10.2.0"

              ## Topics to consume.
              topics = ["telegraf"]

              ## Topic regular expressions to consume.  Matches will be added to topics.
              ## Example: topic_regexps = [ "*test", "metric[0-9A-z]*" ]
              # topic_regexps = [ ]

              ## When set this tag will be added to all metrics with the topic as the value.
              # topic_tag = ""

              ## The list of Kafka message headers that should be pass as metric tags
              ## works only for Kafka version 0.11+, on lower versions the message headers
              ## are not available
              # msg_headers_as_tags = []

              ## The name of kafka message header which value should override the metric name.
              ## In case when the same header specified in current option and in msg_headers_as_tags
              ## option, it will be excluded from the msg_headers_as_tags list.
              # msg_header_as_metric_name = ""

              ## Set metric(s) timestamp using the given source.
              ## Available options are:
              ##   metric -- do not modify the metric timestamp
              ##   inner  -- use the inner message timestamp (Kafka v0.10+)
              ##   outer  -- use the outer (compressed) block timestamp (Kafka v0.10+)
              # timestamp_source = "metric"

              ## Optional Client id
              # client_id = "Telegraf"

              ## Optional TLS Config
              # enable_tls = false
              # tls_ca = "/etc/telegraf/ca.pem"
              # tls_cert = "/etc/telegraf/cert.pem"
              # tls_key = "/etc/telegraf/key.pem"
              ## Use TLS but skip chain & host verification
              # insecure_skip_verify = false

              ## Period between keep alive probes.
              ## Defaults to the OS configuration if not specified or zero.
              # keep_alive_period = "15s"

              ## SASL authentication credentials.  These settings should typically be used
              ## with TLS encryption enabled
              # sasl_username = "kafka"
              # sasl_password = "secret"

              ## Optional SASL:
              ## one of: OAUTHBEARER, PLAIN, SCRAM-SHA-256, SCRAM-SHA-512, GSSAPI
              ## (defaults to PLAIN)
              # sasl_mechanism = ""

              ## used if sasl_mechanism is GSSAPI
              # sasl_gssapi_service_name = ""
              # ## One of: KRB5_USER_AUTH and KRB5_KEYTAB_AUTH
              # sasl_gssapi_auth_type = "KRB5_USER_AUTH"
              # sasl_gssapi_kerberos_config_path = "/"
              # sasl_gssapi_realm = "realm"
              # sasl_gssapi_key_tab_path = ""
              # sasl_gssapi_disable_pafxfast = false

              ## used if sasl_mechanism is OAUTHBEARER
              # sasl_access_token = ""

              ## SASL protocol version.  When connecting to Azure EventHub set to 0.
              # sasl_version = 1

              # Disable Kafka metadata full fetch
              # metadata_full = false

              ## Name of the consumer group.
              # consumer_group = "telegraf_metrics_consumers"

              ## Compression codec represents the various compression codecs recognized by
              ## Kafka in messages.
              ##  0 : None
              ##  1 : Gzip
              ##  2 : Snappy
              ##  3 : LZ4
              ##  4 : ZSTD
              # compression_codec = 0
              ## Initial offset position; one of "oldest" or "newest".
              # offset = "oldest"

              ## Consumer group partition assignment strategy; one of "range", "roundrobin" or "sticky".
              # balance_strategy = "range"

              ## Maximum number of retries for metadata operations including
              ## connecting. Sets Sarama library's Metadata.Retry.Max config value. If 0 or
              ## unset, use the Sarama default of 3,
              # metadata_retry_max = 0

              ## Type of retry backoff. Valid options: "constant", "exponential"
              # metadata_retry_type = "constant"

              ## Amount of time to wait before retrying. When metadata_retry_type is
              ## "constant", each retry is delayed this amount. When "exponential", the
              ## first retry is delayed this amount, and subsequent delays are doubled. If 0
              ## or unset, use the Sarama default of 250 ms
              # metadata_retry_backoff = 0

              ## Maximum amount of time to wait before retrying when metadata_retry_type is
              ## "exponential". Ignored for other retry types. If 0, there is no backoff
              ## limit.
              # metadata_retry_max_duration = 0

              ## When set to true, this turns each bootstrap broker address into a set of
              ## IPs, then does a reverse lookup on each one to get its canonical hostname.
              ## This list of hostnames then replaces the original address list.
              ## resolve_canonical_bootstrap_servers_only = false

              ## Strategy for making connection to kafka brokers. Valid options: "startup",
              ## "defer". If set to "defer" the plugin is allowed to start before making a
              ## connection. This is useful if the broker may be down when telegraf is
              ## started, but if there are any typos in the broker setting, they will cause
              ## connection failures without warning at startup
              # connection_strategy = "startup"

              ## Maximum length of a message to consume, in bytes (default 0/unlimited);
              ## larger messages are dropped
              max_message_len = 1000000

              ## Max undelivered messages
              ## This plugin uses tracking metrics, which ensure messages are read to
              ## outputs before acknowledging them to the original broker to ensure data
              ## is not lost. This option sets the maximum messages to read from the
              ## broker that have not been written by an output.
              ##
              ## This value needs to be picked with awareness of the agent's
              ## metric_batch_size value as well. Setting max undelivered messages too high
              ## can result in a constant stream of data batches to the output. While
              ## setting it too low may never flush the broker's messages.
              # max_undelivered_messages = 1000

              ## Maximum amount of time the consumer should take to process messages. If
              ## the debug log prints messages from sarama about 'abandoning subscription
              ## to [topic] because consuming was taking too long', increase this value to
              ## longer than the time taken by the output plugin(s).
              ##
              ## Note that the effective timeout could be between 'max_processing_time' and
              ## '2 * max_processing_time'.
              # max_processing_time = "100ms"

              ## The default number of message bytes to fetch from the broker in each
              ## request (default 1MB). This should be larger than the majority of
              ## your messages, or else the consumer will spend a lot of time
              ## negotiating sizes and not actually consuming. Similar to the JVM's
              ## `fetch.message.max.bytes`.
              # consumer_fetch_default = "1MB"

              ## Data format to consume.
              ## Each data format has its own unique set of configuration options, read
              ## more about them here:
              ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
              data_format = "influx"

[[outputs.influxdb]]
  ## The full HTTP or UDP URL for your InfluxDB instance.
  ##
  ## Multiple URLs can be specified for a single cluster, only ONE of the
  ## urls will be written to each interval.
  # urls = ["unix:///var/run/influxdb.sock"]
  # urls = ["udp://127.0.0.1:8089"]
  # urls = ["http://127.0.0.1:8086"]

  ## Local address to bind when connecting to the server
  ## If empty or not set, the local address is automatically chosen.
  # local_address = ""

  ## The target database for metrics; will be created as needed.
  ## For UDP url endpoint database needs to be configured on server side.
  # database = "telegraf"

  ## The value of this tag will be used to determine the database.  If this
  ## tag is not set the 'database' option is used as the default.
  # database_tag = ""

  ## If true, the 'database_tag' will not be included in the written metric.
  # exclude_database_tag = false

  ## If true, no CREATE DATABASE queries will be sent.  Set to true when using
  ## Telegraf with a user without permissions to create databases or when the
  ## database already exists.
  # skip_database_creation = false

  ## Name of existing retention policy to write to.  Empty string writes to
  ## the default retention policy.  Only takes effect when using HTTP.
  # retention_policy = ""

  ## The value of this tag will be used to determine the retention policy.  If this
  ## tag is not set the 'retention_policy' option is used as the default.
  # retention_policy_tag = ""

  ## If true, the 'retention_policy_tag' will not be included in the written metric.
  # exclude_retention_policy_tag = false

  ## Write consistency (clusters only), can be: "any", "one", "quorum", "all".
  ## Only takes effect when using HTTP.
  # write_consistency = "any"

  ## Timeout for HTTP messages.
  # timeout = "5s"

  ## HTTP Basic Auth
  # username = "telegraf"
  # password = "metricsmetricsmetricsmetrics"

  ## HTTP User-Agent
  # user_agent = "telegraf"

  ## UDP payload size is the maximum packet size to send.
  # udp_payload = "512B"

  ## Optional TLS Config for use on HTTP connections.
  # tls_ca = "/etc/telegraf/ca.pem"
  # tls_cert = "/etc/telegraf/cert.pem"
  # tls_key = "/etc/telegraf/key.pem"
  ## Use TLS but skip chain & host verification
  # insecure_skip_verify = false

  ## HTTP Proxy override, if unset values the standard proxy environment
  ## variables are consulted to determine which proxy, if any, should be used.
  # http_proxy = "http://corporate.proxy:3128"

  ## Additional HTTP headers
  # http_headers = {"X-Special-Header" = "Special-Value"}

  ## HTTP Content-Encoding for write request body, can be set to "gzip" to
  ## compress body or "identity" to apply no encoding.
  # content_encoding = "gzip"

  ## When true, Telegraf will output unsigned integers as unsigned values,
  ## i.e.: "42u".  You will need a version of InfluxDB supporting unsigned
  ## integer values.  Enabling this option will result in field type errors if
  ## existing data has been written.
  # influx_uint_support = false

  ## When true, Telegraf will omit the timestamp on data to allow InfluxDB
  ## to set the timestamp of the data during ingestion. This is generally NOT
  ## what you want as it can lead to data points captured at different times
  ## getting omitted due to similar data.
  # influx_omit_timestamp = false