Monitoring Apache Kafka consumer

Configure the Server Density agent to monitor your Apache Kafka consumer client to:

• Collect important metrics to graph and monitor performance
• Identify overall server slowdowns caused by the cluster

The Apache Kafka consumer plugin allows you to monitor the following metrics for each topic and partition:

  • Broker offset
  • Consumer lag
  • Consumer offset

Installing the Kafka Consumer plugin package

Install the Kafka Consumer plugin on Debian/Ubuntu:

sudo apt-get install sd-agent-kafka-consumer

Install the Kafka Consumer plugin on RHEL/CentOS:

sudo yum install sd-agent-kafka-consumer

Read more about agent plugins.

Configuring the agent to monitor Apache Kafka consumer

1. The guide below is for Kafka >= 0.8.2.

2. Configure /etc/sd-agent/conf.d/kafka_consumer.yaml

#  Customize the ZooKeeper connection timeout here
#  zk_timeout: 5
#  Customize the Kafka connection timeout here
#  kafka_timeout: 5

   - kafka_connect_str: localhost:19092
     zk_connect_str: localhost:2181
     zk_prefix: /0.8
         my_topic: [0, 1, 4, 12]

3. Restart the agent

sudo /etc/init.d/sd-agent restart

Verifying the configuration
Execute info to verify the configuration with the following:

sudo /etc/init.d/sd-agent info 

If the agent has been configured correctly you’ll see an output such as:

- instance #0 [OK]
- Collected 8 metrics & 0 events

You can also view the metrics returned with the following command:

sudo -u sd-agent /usr/share/python/sd-agent/ check kafka_consumer

Configuring Alerts
Metrics will be in the form $topic_$partition so for example a topic named cloud with 10 partitions would need 10 alerts, e.g. cloud_1, cloud_2 etc 

Configuring Graphs
Click the name of your server from the Devices list in your Server Density account then go to the Metrics tab. Click the + Graph button on the right then choose the Apache Kafka metrics to display the graphs. The metrics will also be available to select when building dashboard graphs.

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