telegraf/plugins/inputs/kafka_consumer/README.md

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# Kafka Consumer Input Plugin
The [Kafka](http://kafka.apache.org/) consumer plugin polls a specified Kafka
topic and adds messages to InfluxDB. The plugin assumes messages follow the
line protocol. [Consumer Group](http://godoc.org/github.com/wvanbergen/kafka/consumergroup)
is used to talk to the Kafka cluster so multiple instances of telegraf can read
from the same topic in parallel.
For old kafka version (< 0.8), please use the kafka_consumer_legacy input plugin
and use the old zookeeper connection method.
## Configuration
```toml
# Read metrics from Kafka topic(s)
[[inputs.kafka_consumer]]
## kafka servers
brokers = ["localhost:9092"]
## topic(s) to consume
topics = ["telegraf"]
## Optional Client id
# client_id = "Telegraf"
## Set the minimal supported Kafka version. Setting this enables the use of new
## Kafka features and APIs. Of particular interest, lz4 compression
## requires at least version 0.10.0.0.
## ex: version = "1.1.0"
# version = ""
## Optional TLS Config
# 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
## Optional SASL Config
# sasl_username = "kafka"
# sasl_password = "secret"
## the name of the consumer group
consumer_group = "telegraf_metrics_consumers"
## Offset (must be either "oldest" or "newest")
offset = "oldest"
## 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"
## Maximum length of a message to consume, in bytes (default 0/unlimited);
## larger messages are dropped
max_message_len = 1000000
```
## Testing
Running integration tests requires running Zookeeper & Kafka. See Makefile
for kafka container command.