Management over REST provides endpoints for accessing and managing all aspects of Topics. The latest versions of the Coherence CLI and Coherence VisualVM Plug-in also support monitoring and management by using the command line and VisualVM, respectively.
Coherence metrics emit Topics, Topic Subscribers, and Topic Subscriber Groups related metrics. Four Grafana dashboards are available to view the Topics metrics over time.
Note:MBeans, Reports, REST endpoints, and support for VisualVM and CLI are available only with the Cumulative Patch Update (CPU) 35122413 or later.
This chapter includes the following topics:
When you cofigure Topics, the associated Topics MBeans become available to you.
The Topic MBeans are:
PagedTopicMBean - Provides statistics for Topic services running in a cluster.
PagedTopicSubscriberMBean - Provides statistics for Topic Subscribers running in a cluster.
PagedTopicSubscriberGroupMBean - Provides statistics for Topic Subscriber Groups running in a cluster.
For more information about these MBeans, see the following topics in Managing Oracle Coherence:
Three reports are available which provide detailed information on Topics, Topic Subscribers, and Topic Subscriber Groups.
The Topics reports are:
- Topic Report (
report-topics.xml) - Provides detailed metrics for Topics defined within a cluster.
- Topic Subscribers Report (
report-subscribers.xml- Provides detailed metrics for Topic Subscribers defined within a cluster.
- Topic Subscriber Groups Report
report-subscriber-groups.xml) - Provides detailed metrics for Topic Subscriber Groups defined within a cluster
For more information about these reports, see the following topics in Managing Oracle Coherence:
Management Over REST
You are can view and manage Topics, Topic Subscribers, and Topic Subscriber Groups using the Management over REST API.
Managing Topics Using the VisualVM Plug-In and CLI
The Coherence VisualVM Plug-in and Coherence CLI are used to provide management and monitoring of Topics within a Coherence cluster.
See the following resources for more information on each tool:
Grafana Dashboards for Topics
When you enable Coherence metrics, these metrics can be scraped and viewed in four Grafana dashboards.
The Grafana dashboards are:
- Topics Summary - Shows a summary of all Topics.
- Topic Details - Shows details about individual Topics.
- Topic Subscriber Details - Shows details about subscribers.
- Topic Subscriber Group Details - Shows details about subscriber groups.
These dashboards are available in the Coherence Operator GitHub repository.
For more information about configuring metrics, see Using Oracle Coherence Metrics in Managing Oracle Coherence.