创建Cloudera自定义指标模板、查询配置文件及开源性的技术咨询

Hey there! Let's tackle your questions one by one, since I've worked with Cloudera Manager and its metrics stack quite a bit:

1. Is it possible to create custom metric templates for Chart Builder? #

Absolutely! You can absolutely build custom metric templates that render properly in Cloudera Manager's Chart Builder. Here's how to go about it:

• Modify existing templates: Locate the built-in chart templates, make a copy, then tweak the metric queries, visualization settings (like chart type, time ranges, grouping dimensions), and labels to fit your needs.
• Build from scratch: You can either use the Cloudera Manager API to define your template, or directly edit the template configuration files (more on that below) and import them into Chart Builder. Once configured correctly, the templates will render just like the default ones.

2. Where are the editable metric configuration files located? #

The exact paths vary based on the component, but here are the key locations you'll need:

• Cloudera Manager Server (Chart Builder templates): The core default chart templates are packaged inside /opt/cloudera/cm/lib/cm_web-<your-cm-version>.jar. You can unzip this JAR file to access the templates/chartbuilder directory, modify the template files (usually in JSON format), then re-package the JAR to apply changes.
• Agent-side service metrics: For services like HDFS, YARN, or Spark, the metrics collection configurations are stored in /var/run/cloudera-scm-agent/process/<process-ID>/ (each service instance has a unique process ID). Look for files like hdfs-metrics.properties or yarn-metrics.properties to adjust which metrics are collected.
• UI-created custom metrics: If you built custom metrics directly via the Cloudera Manager UI, their configurations are stored in the Cloudera Manager database (usually PostgreSQL or MySQL) rather than flat files.

3. Is Cloudera Metrics an open-source project? #

This is a bit nuanced, but here's the breakdown:

• Core metrics components are open source: The foundational parts of Cloudera Metrics (like metric collection agents, basic storage, and compatibility with open-source tools like Prometheus/Ganglia) are part of Cloudera's open-source ecosystem, with code available in public repositories.
• Advanced features are closed-source: Some enhanced functionality—like advanced Chart Builder capabilities, enterprise-grade metric analytics, and certain management features—are part of Cloudera's commercial offerings. These require a paid license to access.

内容的提问来源于stack exchange，提问作者Faraz Ahmed