Custom Monitoring for Java App
Custom monitoring based on Prometheus
Kato has added a custom business monitoring function since V5.3, and supports users to implement custom business monitoring based on Prometheus through a custom Exporter plug-in. This operation requires users to have a systematic understanding of the Prometheus monitoring system.
For users whose main development language is JAVA, we have integrated jmx_exporter into the source code construction process, and through the following simple operations, you can Implement custom JVM monitoring.
Kato version is V5.3 and above
Projects built from JAVA source code
Enable jmx_exporter Custom Monitoring
The switch turned on by jmx_exporter is to add a specified environment variable
ES_ENABLE_JMX_EXPORTER = true for the JAVA service component
5556 port for the JAVA service component, which is the port that jmx_exporter listens to by default.
Add Monitoring Point
By clicking on the Management Monitoring Point at the top right of the business monitoring panel, you can define monitoring point information, which defines the source of monitoring indicators.
Click Add Configuration This group of configurations contains the following elements, which are required:
Configuration name: customize the name of this group of configurations
Collection task name: custom
Collection time interval: 10s
After finishing these operations, update the JAVA service component to make it effective.
Add Monitoring Chart
Next, you can add a monitoring chart to display the JVM indicator rows in the JAVA service component:
Click Add Chart at the top of the business monitoring panel
After entering the new title and the corresponding query condition
jvm_memory_bytes_used, click Query. If the graph is returned normally, the query conditions are correct. The definition of the title should be as clear as possible, and the unit should be clarified if necessary.
More Advanced Operations
By setting the following set of environment variables, you can define more advanced settings for jmx_exporter:
|Environment Variable Name||Optional Value||Description|
|JMX_EXPORTER_AGENT_VERSION||0.15.0||jmx_exporter version, currently the latest stable version|
|JMX_EXPORTER_HTTP_PORT||5556 (default)||jmx_exporter listening port, customizable|
|JMX_EXPORTER_CONFIG||/app/.jmx-exporter/config.yaml (default)||jmx_exporter configuration file path, after the path can be customized, the customized configuration file will take effect after mounting|