mirror of
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d4967c38f8
* Various documentation updates.
1) Split out "data management" from "ingestion". Break it into thematic pages.
2) Move "SQL-based ingestion" into the Ingestion category. Adjust content so
all conceptual content is in concepts.md and all syntax content is in reference.md.
Shorten the known issues page to the most interesting ones.
3) Add SQL-based ingestion to the ingestion method comparison page. Remove the
index task, since index_parallel is just as good when maxNumConcurrentSubTasks: 1.
4) Rename various mentions of "Druid console" to "web console".
5) Add additional information to ingestion/partitioning.md.
6) Remove a mention of Tranquility.
7) Remove a note about upgrading to Druid 0.10.1.
8) Remove no-longer-relevant task types from ingestion/tasks.md.
9) Move ingestion/native-batch-firehose.md to the hidden section. It was previously deprecated.
10) Move ingestion/native-batch-simple-task.md to the hidden section. It is still linked in some
places, but it isn't very useful compared to index_parallel, so it shouldn't take up space
in the sidebar.
11) Make all br tags self-closing.
12) Certain other cosmetic changes.
13) Update to node-sass 7.
* make travis use node12 for docs
Co-authored-by: Vadim Ogievetsky <vadim@ogievetsky.com>
56 lines
2.5 KiB
Markdown
56 lines
2.5 KiB
Markdown
---
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id: kafka-emitter
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title: "Kafka Emitter"
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---
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<!--
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~ Licensed to the Apache Software Foundation (ASF) under one
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~ or more contributor license agreements. See the NOTICE file
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~ distributed with this work for additional information
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~ regarding copyright ownership. The ASF licenses this file
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~ to you under the Apache License, Version 2.0 (the
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~ "License"); you may not use this file except in compliance
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~ with the License. You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing,
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~ software distributed under the License is distributed on an
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~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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~ KIND, either express or implied. See the License for the
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~ specific language governing permissions and limitations
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~ under the License.
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-->
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To use this Apache Druid extension, [include](../../development/extensions.md#loading-extensions) `kafka-emitter` in the extensions load list.
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## Introduction
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This extension emits Druid metrics to [Apache Kafka](https://kafka.apache.org) directly with JSON format.<br />
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Currently, Kafka has not only their nice ecosystem but also consumer API readily available.
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So, If you currently use Kafka, It's easy to integrate various tool or UI
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to monitor the status of your Druid cluster with this extension.
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## Configuration
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All the configuration parameters for the Kafka emitter are under `druid.emitter.kafka`.
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|property|description|required?|default|
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|--------|-----------|---------|-------|
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|`druid.emitter.kafka.bootstrap.servers`|Comma-separated Kafka broker. (`[hostname:port],[hostname:port]...`)|yes|none|
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|`druid.emitter.kafka.metric.topic`|Kafka topic name for emitter's target to emit service metric.|yes|none|
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|`druid.emitter.kafka.alert.topic`|Kafka topic name for emitter's target to emit alert.|yes|none|
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|`druid.emitter.kafka.request.topic`|Kafka topic name for emitter's target to emit request logs. If left empty then request logs will not be sent to the Kafka topic.|no|none|
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|`druid.emitter.kafka.producer.config`|JSON formatted configuration which user want to set additional properties to Kafka producer.|no|none|
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|`druid.emitter.kafka.clusterName`|Optional value to specify name of your druid cluster. It can help make groups in your monitoring environment. |no|none|
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### Example
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```
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druid.emitter.kafka.bootstrap.servers=hostname1:9092,hostname2:9092
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druid.emitter.kafka.metric.topic=druid-metric
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druid.emitter.kafka.alert.topic=druid-alert
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druid.emitter.kafka.producer.config={"max.block.ms":10000}
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```
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