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https://issues.apache.org/jira/browse/IGNITE-28885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Egor Baranov reassigned IGNITE-28885:
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Assignee: Egor Baranov
> Add JMX Prometheus Exporter to Ducktests for JVM Memory/GC Monitoring
> ----------------------------------------------------------------------
>
> Key: IGNITE-28885
> URL: https://issues.apache.org/jira/browse/IGNITE-28885
> Project: Ignite
> Issue Type: Improvement
> Reporter: Egor Baranov
> Assignee: Egor Baranov
> Priority: Major
>
> Motivation
> Prometheus does not support the JMX protocol natively; it only scrapes
> metrics exposed over HTTP in its own text format. A bridge (JVM agent) is
> required to make JVM-level metrics accessible to Prometheus.
> This task integrates jmx_prometheus_javaagent into the ducktests
> framework so that every server/client node exposes JVM memory and GC metrics
> at :8083/metrics in Prometheus format. This enables Grafana
> dashboards that mirror the jconsole "Memory" tab (heap, non-heap, memory
> pools, GC collection count/time).
> Changes
> 1. Dockerfile (modules/ducktests/tests/docker/Dockerfile)
> - Download and install jmx_prometheus_javaagent-1.1.0.jar to
> /opt/jmx_exporter.jar
> 2. jmx_exporter package
> (modules/ducktests/tests/ignitetest/services/utils/jmx_exporter/)
> - `__init__.py` — helper module with:
> - JmxExporterParams — settings from globals config (enabled, port)
> - get_jmx_exporter_params() — parse globals
> - is_jmx_exporter_enabled() — check if enabled
> - get_jmx_exporter_yml_content() — read bundled YAML content
> - jmx_agent_jvm_opt() — build -javaagent JVM option string
> - `jmx_exporter.yml` — rule mappings for JVM memory and GC metrics:
> - jvm_memory_heap_bytes_\{used,max,committed,init}
> - jvm_memory_nonheap_bytes_\{used,max,committed,init}
> - jvm_memory_pool_usage_bytes\{pool,attribute}
> - jvm_memory_pool_collection_bytes\{pool,attribute}
> - jvm_gc_collection_count_total\{gc}
> - jvm_gc_collection_time_seconds_total\{gc}
> 3. ignite_spec.py
> (modules/ducktests/tests/ignitetest/services/utils/ignite_spec.py)
> - In __get_default_jvm_opts(): append
> -javaagent:/opt/jmx_exporter.jar=\{port}:\{config_dir}/jmx_exporter.yml when
> jmx_exporter.enabled is true in globals
> 4. ignite_aware.py
> (modules/ducktests/tests/ignitetest/services/utils/ignite_aware.py)
> - In init_persistent(): download jmx_exporter.jar to node if not present
> (idempotent: test -f || curl)
> - In _prepare_configs(): create jmx_exporter.yml in the node's config
> directory from bundled resource
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