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[Logstash integration] Add current and peak connections metrics of elastic-agent input plugin. #15148

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Merged
merged 6 commits into from
Sep 18, 2025
Merged

[Logstash integration] Add current and peak connections metrics of elastic-agent input plugin. #15148

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9aeed6e
Saves current and peak connections metrics of elastic-agent input plu…
mashhurs Sep 3, 2025
56204ec
Update the type migration version which was snapshot before.
mashhurs Sep 3, 2025
6f4c1f4
Unify current and peak connections graphs into single view.
mashhurs Sep 4, 2025
23c2cb9
Rename y-axis title.
mashhurs Sep 4, 2025
4e2d358
Rename the dashboard title and panel.
mashhurs Sep 9, 2025
7bd74d9
Specify Logstash versions which expose these metrics.
mashhurs Sep 10, 2025
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5 changes: 5 additions & 0 deletions packages/logstash/changelog.yml
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Original file line number Diff line number Diff line change
@@ -1,4 +1,9 @@
# newer versions go on top
- version: "2.8.0"
changes:
- description: Adds a dashboard for monitoring current and peak connections in the elastic_agent or beats input plugins. These metrics are available only in Logstash versions 8.18.7, 8.19.4, 9.0.7, 9.1.4, or later. Older versions do not expose them.
type: enhancement
link: https://github.com/elastic/integrations/pull/14727
- version: "2.7.4"
changes:
- description: |
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3 changes: 2 additions & 1 deletion packages/logstash/data_stream/plugins/agent/stream/cel.yml.hbs
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Expand Up @@ -50,7 +50,8 @@ program: |
:
[],
"counter_map": has(body.pipelines[pipeline_name].vertices) ?
body.pipelines[pipeline_name].vertices.map(vertex, has(vertex.long_counters), vertex.long_counters.map(counter, {
body.pipelines[pipeline_name].vertices.map(vertex, has(vertex.long_counters) || has(vertex.double_gauges),
((has(vertex.long_counters) ? vertex.long_counters : []) + (has(vertex.double_gauges) ? vertex.double_gauges : [])).map(counter, {
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@mashhurs mashhurs Sep 3, 2025

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review note: peak and current connections are gauge metrics and comes through _node/stats?vertices=true API response -> vertices -> double_gauges
See: elastic/logstash#18082

"plugin_id": vertex.id,
"name": counter.name,
"value": counter.value
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16 changes: 16 additions & 0 deletions packages/logstash/data_stream/plugins/fields/fields.yml
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Expand Up @@ -109,6 +109,22 @@
type: scaled_float
metric_type: gauge
description: throughput of this input plugin
- name: metrics
type: group
description: Plugin specific metrics
fields:
- name: beats
type: group
description: elastic_agent or beats input plugin specific metrics
fields:
- name: peak_connections
type: long
description: Number of peak connections
metric_type: counter
- name: current_connections
type: long
description: Current connections count
metric_type: counter
- name: filter
type: group
description: Information about filter plugins
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2 changes: 2 additions & 0 deletions packages/logstash/docs/README.md
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Expand Up @@ -687,6 +687,8 @@ pipeline collection period, and setting it to an appropriate value.
| logstash.pipeline.plugin.input.flow.throughput.current | throughput of this input plugin | scaled_float | | gauge |
| logstash.pipeline.plugin.input.flow.throughput.last_1_minute | throughput of this input plugin | scaled_float | | gauge |
| logstash.pipeline.plugin.input.id | Id of input plugin | keyword | | |
| logstash.pipeline.plugin.input.metrics.beats.current_connections | Current connections count | long | | counter |
| logstash.pipeline.plugin.input.metrics.beats.peak_connections | Number of peak connections | long | | counter |
| logstash.pipeline.plugin.input.name | Name of input plugin | keyword | | |
| logstash.pipeline.plugin.input.source.column | | keyword | | |
| logstash.pipeline.plugin.input.source.id | | keyword | | |
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