Apache ActiveMQ

The Apache ActiveMQ integration collects storage usage and message metrics. Storage metrics include memory and disk usage. Message metrics include number of waiting messages, average wait time, and expired messages.

For more information about ActiveMQ, see activemq.apache.org/.

Prerequisites

To collect and ingest ActiveMQ metrics, you must install Ops Agent version 2.11.0 or higher.

You must enable JMX support in the broker configuration.

This receiver supports the following Apache ActiveMQ versions:

ActiveMQ Classic versions 5.8.x through 5.16.x.
ActiveMQ Artemis version 2.x.

Configure the Ops Agent for ActiveMQ

Following the guide for Configuring the Ops Agent, add the required elements to collect metrics from your ActiveMQ instances, and restart the agent.

Example configuration

The following command creates the configuration file to collect and ingest metrics for ActiveMQ and restarts the Ops Agent on Linux.

sudo tee /etc/google-cloud-ops-agent/config.yaml > /dev/null << EOF
metrics:
  receivers:
    activemq:
      type: activemq
  service:
    pipelines:
      activemq:
        receivers:
          - activemq
EOF
sudo service google-cloud-ops-agent restart

Configure metrics collection

To collect metrics from ActiveMQ, you must create a receiver for ActiveMQ metrics and then create a pipeline for the new receiver. To configure a receiver for your ActiveMQ metrics, specify the following fields:

Field	Default	Description
`type`		This value must be `activemq`.
`endpoint`	`http://localhost:1099`	The URL of the node to monitor.
`username`		The configured username if JMX is configured to require authentication.
`password`		The configured password if JMX is configured to require authentication.
`collection_interval`	`60s`	A time.Duration value, such as `30s` or `5m`.

What is monitored

The following table provides the list of metrics that the Ops Agent collects from the ActiveMQ instance.

Metric type
Kind, Type Monitored resources	Labels
`workload.googleapis.com/activemq.connection.count`
`GAUGE`, `INT64` gce_instance
`workload.googleapis.com/activemq.consumer.count`
`GAUGE`, `INT64` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.disk.store_usage`
`GAUGE`, `DOUBLE` gce_instance
`workload.googleapis.com/activemq.disk.temp_usage`
`GAUGE`, `DOUBLE` gce_instance
`workload.googleapis.com/activemq.memory.usage`
`GAUGE`, `DOUBLE` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.message.current`
`GAUGE`, `INT64` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.message.dequeued`
`CUMULATIVE`, `INT64` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.message.enqueued`
`CUMULATIVE`, `INT64` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.message.expired`
`CUMULATIVE`, `INT64` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.message.wait_time.avg`
`GAUGE`, `DOUBLE` gce_instance	`broker` `destination`
`workload.googleapis.com/activemq.producer.count`
`GAUGE`, `INT64` gce_instance	`broker` `destination`

Collect logs

ActiveMQ writes logs to syslog, which is captured by Ops Agent by default. No additional user configuration is required.

Sample dashboard

You can view the metrics from this integration using a sample Cloud Monitoring dashboard. Complete the Installing sample dashboards procedures to import the ActiveMQ GCE Overview dashboard from the Sample library and view charts that display your ActiveMQ metrics.

Verify the ingestion

To verify the logs are ingested, go to the Logs Explorer and run the following query to view the ActiveMQ logs, replacing activemq with your system unit name for ActiveMQ if needed:

resource.type="gce_instance"
logName="projects/PROJECT_ID/logs/syslog"
activemq

You can use the Metrics Explorer to verify that you correctly configured the ActiveMQ metrics receiver. It might take one or two minutes for the Ops Agent to begin collecting metrics.

To verify the metrics are ingested, go to Metrics Explorer and run the following query in the MQL tab.

fetch gce_instance
| metric 'workload.googleapis.com/activemq.connection.count'
| align rate(1m)
| every 1m

What's next

For a walkthrough on how to use Ansible to install the Ops Agent, configure a third-party application, and install a sample dashboard, see the Install the Ops Agent to troubleshoot third-party applications video.