Introduce a new flag to explicitly permit legacy monitoring #16586

andsel · 2024-10-18T14:46:07Z

Release notes

Introduce a new flag setting allow.legacy.monitoring which eventually enable the legacy monitoring collector.

What does this PR do?

Update the method to test if monitoring is enabled so that consider also allow.legacy.monitoring to determine if monitoring.* settings are valid or not.
By default it's false, the user has to intentionally enable it to continue to use the legacy monitoring settings.

Why is it important/What is the impact to the user?

Checklist

My code follows the style guidelines of this project
I have commented my code, particularly in hard-to-understand areas
I have made corresponding changes to the documentation
~~[ ] I have made corresponding change to the default configuration files (and/or docker env variables)~~
I have added tests that prove my fix is effective or that my feature works

Author's Checklist

[ ]

How to test this PR locally

Run ES and KB locally with:

curl -fsSL https://elastic.co/start-local | sh

from the console record the password for elastic user.
configure Logstash internal monitoring (in config/logstash.yml), like:

xpack.monitoring.enabled: true
xpack.monitoring.elasticsearch.username: elastic
xpack.monitoring.elasticsearch.password:s3cr3t
xpack.monitoring.elasticsearch.hosts: ["http://localhost:9200"]

verify no monitoring data is present in Kibana
stop Logstash
override the legacy collection enabling explicitly in config/logstash.yml with:

allow.legacy.monitoring: true

verify that Kibana can show monitoring data

Related issues

Closes Move Internal Collection stack monitoring behind a feature flag #16481

Use cases

As a developer I want to definitively drop the internal legacy collector in favor of ElasticAgent

Logs

Logs without collection override

% bin/logstash
Using system java: /Users/andrea/.sdkman/candidates/java/current/bin/java
Sending Logstash logs to /Users/andrea/workspace/logstash_andsel/logs which is now configured via log4j2.properties
[2024-10-21T10:12:39,642][INFO ][logstash.runner          ] Log4j configuration path used is: /Users/andrea/workspace/logstash_andsel/config/log4j2.properties
[2024-10-21T10:12:39,645][WARN ][logstash.runner          ] The use of JAVA_HOME has been deprecated. Logstash 8.0 and later ignores JAVA_HOME and uses the bundled JDK. Running Logstash with the bundled JDK is recommended. The bundled JDK has been verified to work with each specific version of Logstash, and generally provides best performance and reliability. If you have compelling reasons for using your own JDK (organizational-specific compliance requirements, for example), you can configure LS_JAVA_HOME to use that version instead.
[2024-10-21T10:12:39,645][INFO ][logstash.runner          ] Starting Logstash {"logstash.version"=>"9.0.0", "jruby.version"=>"jruby 9.4.8.0 (3.1.4) 2024-07-02 4d41e55a67 OpenJDK 64-Bit Server VM 21.0.4+7-LTS on 21.0.4+7-LTS +indy +jit [arm64-darwin]"}
[2024-10-21T10:12:39,646][INFO ][logstash.runner          ] JVM bootstrap flags: [-Xms1g, -Xmx1g, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djruby.compile.invokedynamic=true, -XX:+HeapDumpOnOutOfMemoryError, -Djava.security.egd=file:/dev/urandom, -Dlog4j2.isThreadContextMapInheritable=true, -Dlogstash.jackson.stream-read-constraints.max-string-length=200000000, -Dlogstash.jackson.stream-read-constraints.max-number-length=10000, -Djruby.regexp.interruptible=true, -Djdk.io.File.enableADS=true, --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED, --add-opens=java.base/java.security=ALL-UNNAMED, --add-opens=java.base/java.io=ALL-UNNAMED, --add-opens=java.base/java.nio.channels=ALL-UNNAMED, --add-opens=java.base/sun.nio.ch=ALL-UNNAMED, --add-opens=java.management/sun.management=ALL-UNNAMED, -Dio.netty.allocator.maxOrder=11]
[2024-10-21T10:12:39,647][INFO ][logstash.runner          ] Jackson default value override `logstash.jackson.stream-read-constraints.max-string-length` configured to `200000000`
[2024-10-21T10:12:39,647][INFO ][logstash.runner          ] Jackson default value override `logstash.jackson.stream-read-constraints.max-number-length` configured to `10000`
[2024-10-21T10:12:39,655][INFO ][logstash.configmanagement.bootstrapcheck] Using Elasticsearch as config store {:pipeline_id=>["main", "apache_logs"], :poll_interval=>"TimeValue{duration=5, timeUnit=SECONDS}ns"}
[2024-10-21T10:12:39,811][INFO ][logstash.configmanagement.elasticsearchsource] Configuration Management License OK
[2024-10-21T10:12:40,003][INFO ][logstash.agent           ] Successfully started Logstash API endpoint {:port=>9600, :ssl_enabled=>false}
[2024-10-21T10:12:40,006][INFO ][logstash.configmanagement.elasticsearchsource] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http://elastic:xxxxxx@localhost:9200/]}}
[2024-10-21T10:12:40,017][WARN ][logstash.configmanagement.elasticsearchsource] Restored connection to ES instance {:url=>"http://elastic:xxxxxx@localhost:9200/"}
[2024-10-21T10:12:40,017][INFO ][logstash.configmanagement.elasticsearchsource] Elasticsearch version determined (8.15.3) {:es_version=>8}
[2024-10-21T10:12:40,017][WARN ][logstash.configmanagement.elasticsearchsource] Detected a 6.x and above cluster: the `type` event field won't be used to determine the document _type {:es_version=>8}
[2024-10-21T10:12:40,111][INFO ][org.reflections.Reflections] Reflections took 53 ms to scan 1 urls, producing 149 keys and 522 values
[2024-10-21T10:12:40,217][INFO ][logstash.javapipeline    ] Pipeline `main` is configured with `pipeline.ecs_compatibility: v8` setting. All plugins in this pipeline will default to `ecs_compatibility => v8` unless explicitly configured otherwise.
[2024-10-21T10:12:40,222][WARN ][logstash.javapipeline    ][main] 'pipeline.ordered' is enabled and is likely less efficient, consider disabling if preserving event order is not necessary
[2024-10-21T10:12:40,227][INFO ][logstash.javapipeline    ][main] Starting pipeline {:pipeline_id=>"main", "pipeline.workers"=>1, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>50, "pipeline.max_inflight"=>125, "pipeline.sources"=>["central pipeline management"], :thread=>"#<Thread:0x3de7334d /Users/andrea/workspace/logstash_andsel/logstash-core/lib/logstash/java_pipeline.rb:139 run>"}
[2024-10-21T10:12:40,406][INFO ][logstash.javapipeline    ][main] Pipeline Java execution initialization time {"seconds"=>0.18}
[2024-10-21T10:12:40,415][INFO ][logstash.javapipeline    ][main] Pipeline started {"pipeline.id"=>"main"}
The stdin plugin is now waiting for input:
[2024-10-21T10:12:40,423][INFO ][logstash.agent           ] Pipelines running {:count=>1, :running_pipelines=>[:main], :non_running_pipelines=>[]}
^C[2024-10-21T10:12:54,390][WARN ][logstash.runner          ] SIGINT received. Shutting down.
[2024-10-21T10:12:54,477][INFO ][logstash.javapipeline    ][main] Pipeline terminated {"pipeline.id"=>"main"}
[2024-10-21T10:12:55,411][INFO ][logstash.pipelinesregistry] Removed pipeline from registry successfully {:pipeline_id=>:main}
[2024-10-21T10:12:55,419][INFO ][logstash.runner          ] Logstash shut down.

Logs with collection override

% bin/logstash
Using system java: /Users/andrea/.sdkman/candidates/java/current/bin/java
Sending Logstash logs to /Users/andrea/workspace/logstash_andsel/logs which is now configured via log4j2.properties
[2024-10-21T10:13:19,015][INFO ][logstash.runner          ] Log4j configuration path used is: /Users/andrea/workspace/logstash_andsel/config/log4j2.properties
[2024-10-21T10:13:19,017][WARN ][logstash.runner          ] The use of JAVA_HOME has been deprecated. Logstash 8.0 and later ignores JAVA_HOME and uses the bundled JDK. Running Logstash with the bundled JDK is recommended. The bundled JDK has been verified to work with each specific version of Logstash, and generally provides best performance and reliability. If you have compelling reasons for using your own JDK (organizational-specific compliance requirements, for example), you can configure LS_JAVA_HOME to use that version instead.
[2024-10-21T10:13:19,017][INFO ][logstash.runner          ] Starting Logstash {"logstash.version"=>"9.0.0", "jruby.version"=>"jruby 9.4.8.0 (3.1.4) 2024-07-02 4d41e55a67 OpenJDK 64-Bit Server VM 21.0.4+7-LTS on 21.0.4+7-LTS +indy +jit [arm64-darwin]"}
[2024-10-21T10:13:19,018][INFO ][logstash.runner          ] JVM bootstrap flags: [-Xms1g, -Xmx1g, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djruby.compile.invokedynamic=true, -XX:+HeapDumpOnOutOfMemoryError, -Djava.security.egd=file:/dev/urandom, -Dlog4j2.isThreadContextMapInheritable=true, -Dlogstash.jackson.stream-read-constraints.max-string-length=200000000, -Dlogstash.jackson.stream-read-constraints.max-number-length=10000, -Djruby.regexp.interruptible=true, -Djdk.io.File.enableADS=true, --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED, --add-opens=java.base/java.security=ALL-UNNAMED, --add-opens=java.base/java.io=ALL-UNNAMED, --add-opens=java.base/java.nio.channels=ALL-UNNAMED, --add-opens=java.base/sun.nio.ch=ALL-UNNAMED, --add-opens=java.management/sun.management=ALL-UNNAMED, -Dio.netty.allocator.maxOrder=11]
[2024-10-21T10:13:19,019][INFO ][logstash.runner          ] Jackson default value override `logstash.jackson.stream-read-constraints.max-string-length` configured to `200000000`
[2024-10-21T10:13:19,019][INFO ][logstash.runner          ] Jackson default value override `logstash.jackson.stream-read-constraints.max-number-length` configured to `10000`
[2024-10-21T10:13:19,026][INFO ][logstash.configmanagement.bootstrapcheck] Using Elasticsearch as config store {:pipeline_id=>["main", "apache_logs"], :poll_interval=>"TimeValue{duration=5, timeUnit=SECONDS}ns"}
[2024-10-21T10:13:19,187][INFO ][logstash.configmanagement.elasticsearchsource] Configuration Management License OK
[2024-10-21T10:13:19,427][INFO ][logstash.monitoring.internalpipelinesource] Monitoring License OK
[2024-10-21T10:13:19,427][INFO ][logstash.monitoring.internalpipelinesource] Validated license for monitoring. Enabling monitoring pipeline.
[2024-10-21T10:13:19,445][INFO ][logstash.configmanagement.elasticsearchsource] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http://elastic:xxxxxx@localhost:9200/]}}
[2024-10-21T10:13:19,464][WARN ][logstash.configmanagement.elasticsearchsource] Restored connection to ES instance {:url=>"http://elastic:xxxxxx@localhost:9200/"}
[2024-10-21T10:13:19,464][INFO ][logstash.configmanagement.elasticsearchsource] Elasticsearch version determined (8.15.3) {:es_version=>8}
[2024-10-21T10:13:19,464][WARN ][logstash.configmanagement.elasticsearchsource] Detected a 6.x and above cluster: the `type` event field won't be used to determine the document _type {:es_version=>8}
[2024-10-21T10:13:19,466][INFO ][logstash.agent           ] Successfully started Logstash API endpoint {:port=>9600, :ssl_enabled=>false}
[2024-10-21T10:13:19,588][INFO ][org.reflections.Reflections] Reflections took 69 ms to scan 1 urls, producing 149 keys and 522 values
[2024-10-21T10:13:19,640][INFO ][logstash.javapipeline    ] Pipeline `.monitoring-logstash` is configured with `pipeline.ecs_compatibility: v8` setting. All plugins in this pipeline will default to `ecs_compatibility => v8` unless explicitly configured otherwise.
[2024-10-21T10:13:19,649][INFO ][logstash.outputs.elasticsearchmonitoring][.monitoring-logstash] New Elasticsearch output {:class=>"LogStash::Outputs::ElasticSearchMonitoring", :hosts=>["http://localhost:9200"]}
[2024-10-21T10:13:19,652][INFO ][logstash.outputs.elasticsearchmonitoring][.monitoring-logstash] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http://elastic:xxxxxx@localhost:9200/]}}
[2024-10-21T10:13:19,664][WARN ][logstash.outputs.elasticsearchmonitoring][.monitoring-logstash] Restored connection to ES instance {:url=>"http://elastic:xxxxxx@localhost:9200/"}
[2024-10-21T10:13:19,664][INFO ][logstash.outputs.elasticsearchmonitoring][.monitoring-logstash] Elasticsearch version determined (8.15.3) {:es_version=>8}
[2024-10-21T10:13:19,664][WARN ][logstash.outputs.elasticsearchmonitoring][.monitoring-logstash] Detected a 6.x and above cluster: the `type` event field won't be used to determine the document _type {:es_version=>8}
[2024-10-21T10:13:19,671][WARN ][logstash.javapipeline    ][.monitoring-logstash] 'pipeline.ordered' is enabled and is likely less efficient, consider disabling if preserving event order is not necessary
[2024-10-21T10:13:19,675][INFO ][logstash.javapipeline    ][.monitoring-logstash] Starting pipeline {:pipeline_id=>".monitoring-logstash", "pipeline.workers"=>1, "pipeline.batch.size"=>2, "pipeline.batch.delay"=>50, "pipeline.max_inflight"=>2, "pipeline.sources"=>["monitoring pipeline"], :thread=>"#<Thread:0x6075fcff /Users/andrea/workspace/logstash_andsel/logstash-core/lib/logstash/java_pipeline.rb:139 run>"}
[2024-10-21T10:13:19,676][INFO ][logstash.javapipeline    ] Pipeline `main` is configured with `pipeline.ecs_compatibility: v8` setting. All plugins in this pipeline will default to `ecs_compatibility => v8` unless explicitly configured otherwise.
[2024-10-21T10:13:19,678][WARN ][logstash.javapipeline    ][main] 'pipeline.ordered' is enabled and is likely less efficient, consider disabling if preserving event order is not necessary
[2024-10-21T10:13:19,679][INFO ][logstash.javapipeline    ][main] Starting pipeline {:pipeline_id=>"main", "pipeline.workers"=>1, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>50, "pipeline.max_inflight"=>125, "pipeline.sources"=>["central pipeline management"], :thread=>"#<Thread:0x5f62301d /Users/andrea/workspace/logstash_andsel/logstash-core/lib/logstash/java_pipeline.rb:139 run>"}
[2024-10-21T10:13:19,866][INFO ][logstash.javapipeline    ][main] Pipeline Java execution initialization time {"seconds"=>0.19}
[2024-10-21T10:13:19,866][INFO ][logstash.javapipeline    ][.monitoring-logstash] Pipeline Java execution initialization time {"seconds"=>0.19}
[2024-10-21T10:13:19,875][INFO ][logstash.javapipeline    ][.monitoring-logstash] Pipeline started {"pipeline.id"=>".monitoring-logstash"}
[2024-10-21T10:13:19,896][INFO ][logstash.javapipeline    ][main] Pipeline started {"pipeline.id"=>"main"}
The stdin plugin is now waiting for input:
[2024-10-21T10:13:19,907][INFO ][logstash.agent           ] Pipelines running {:count=>2, :running_pipelines=>[:".monitoring-logstash", :main], :non_running_pipelines=>[]}
^C[2024-10-21T10:14:36,525][WARN ][logstash.runner          ] SIGINT received. Shutting down.
[2024-10-21T10:14:36,616][INFO ][logstash.javapipeline    ][main] Pipeline terminated {"pipeline.id"=>"main"}
[2024-10-21T10:14:37,544][INFO ][logstash.pipelinesregistry] Removed pipeline from registry successfully {:pipeline_id=>:main}
[2024-10-21T10:14:37,968][INFO ][logstash.javapipeline    ][.monitoring-logstash] Pipeline terminated {"pipeline.id"=>".monitoring-logstash"}
[2024-10-21T10:14:38,553][INFO ][logstash.pipelinesregistry] Removed pipeline from registry successfully {:pipeline_id=>:".monitoring-logstash"}
[2024-10-21T10:14:38,562][INFO ][logstash.runner          ] Logstash shut down.

…ally enable the legacy monitoring collector

…toring.

…monitoring is overridden

kaisecheng

Besides the suggestion of renaming the flag, I would suggest to add allow.legacy.monitoring to env2yaml.go. The main reason is to ease the transition for docker users as they can setup monitoring by just passing the env variable today.

docs/static/settings-file.asciidoc

config/logstash.yml

Co-authored-by: kaisecheng <[email protected]>

kaisecheng

please add the flag to benchmark buildkite 🙏

When I use the xpack.* to enable monitoring in old way, Logstash does not give any hints/ logs that it is missing the flag. I think we need to print logs to guide user.

Let @karenzone to have a look on the words, otherwise, LGTM

docs/static/monitoring/monitoring-internal-legacy.asciidoc

config/logstash.yml

x-pack/spec/monitoring/pipeline_register_hook_spec.rb

kaisecheng · 2024-10-22T11:34:42Z

One more missing in default_metadata.rb for curl localhost:9600/

Co-authored-by: kaisecheng <[email protected]>

… but not allowed.

andsel · 2024-10-22T12:31:30Z

Thanks @kaisecheng for your review, added the allow.legacy.monitoring flag to BK pipeline and now logs a warn when legacy monitoring is enabled and not allowed.

Example of line logged:

[2024-10-22T14:27:17,977][WARN ][logstash.monitoringextension.pipelineregisterhook] Legacy internal monitoring is enabled (xpack.monitoring.enabled or monitoring.enabled is true) but not allowed. Please check your configuration and eventually set allow.legacy.monitoring

kaisecheng

One more missing in default_metadata.rb for curl localhost:9600/

☝️ Almost there

x-pack/lib/monitoring/monitoring.rb

Co-authored-by: kaisecheng <[email protected]>

andsel · 2024-10-22T13:41:16Z

@kaisecheng

☝️ Almost there

was fixed in https://github.com/elastic/logstash/pull/16586/files#diff-a0255510e1f939e6ad6e719d7db5ec42a9f0e886171561b1084da93693a44256R6 if I'm not wrong

kaisecheng · 2024-10-22T13:52:55Z

@andsel https://github.com/elastic/logstash/blob/main/logstash-core/lib/logstash/api/commands/default_metadata.rb#L73-L76
It is about logstash API. When enabled_xpack_monitoring? is enabled, monitoring related info will return. I think it needs to add && LogStash::SETTINGS.get("allow.legacy.monitoring")

kaisecheng · 2024-10-22T13:54:45Z

@andsel btw, I have triggered exhausted test for this pr, but got red

kaisecheng

LGTM :)

elastic-sonarqube · 2024-10-23T12:54:22Z

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarQube

elasticmachine · 2024-10-23T13:03:40Z

💚 Build Succeeded

Buildkite Build
Commit: 3d5ab00

History

💚 Build #1746 succeeded 8abc793
💚 Build #1745 succeeded 2e90f14
💔 Build #1737 failed cb91379
💚 Build #1736 succeeded 485d37f
💚 Build #1733 succeeded 9929323
💚 Build #1729 succeeded 8fd24d2

cc @andsel

Introduce a new flag setting 'legacy.monitoring.enabled' which eventu…

54bbe7d

…ally enable the legacy monitoring collector

andsel self-assigned this Oct 18, 2024

andsel marked this pull request as draft October 18, 2024 14:46

andsel changed the title ~~Introduce a new flag setting 'legacy.monitoring.enabled' which eventu…~~ Introduce a new flag to explicitly permit legacy monitoring Oct 18, 2024

andsel linked an issue Oct 18, 2024 that may be closed by this pull request

Move Internal Collection stack monitoring behind a feature flag #16481

Open

jsvd added the status:work-in-progress label Oct 18, 2024

andsel added 2 commits October 18, 2024 17:52

Removed commented line

2fefd51

[Docs] Added note to call the user that want to force the legacy moni…

6bd75a6

…toring.

andsel added the enhancement label Oct 21, 2024

andsel marked this pull request as ready for review October 21, 2024 08:42

jsvd added status:needs-triage and removed status:work-in-progress labels Oct 21, 2024

[test] Added test to cover monitoring to be enabled only when legacy.…

8fd24d2

…monitoring is overridden

kaisecheng reviewed Oct 22, 2024

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andsel and others added 3 commits October 22, 2024 09:44

Apply suggestions from code review

df08f2c

Co-authored-by: kaisecheng <[email protected]>

Renamed 'legacy.monitoring.enabled' to 'allow.legacy.monitoring'

fbe907d

Exposed 'allow.legacy.monitoring' from Docker image

9929323

andsel requested a review from kaisecheng October 22, 2024 09:20

kaisecheng requested changes Oct 22, 2024

View reviewed changes

docs/static/monitoring/monitoring-internal-legacy.asciidoc Outdated Show resolved Hide resolved

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x-pack/spec/monitoring/pipeline_register_hook_spec.rb Outdated Show resolved Hide resolved

jsvd added status:changes-requested and removed status:needs-triage labels Oct 22, 2024

andsel and others added 3 commits October 22, 2024 14:06

Apply suggestions from code review

014853f

Co-authored-by: kaisecheng <[email protected]>

Updated benchmark BK pipeline to explicitly allow legacy collection

3e791f7

Logs a warning message when detects that legacy monitoring is enabled…

485d37f

… but not allowed.

andsel requested review from kaisecheng and karenzone October 22, 2024 13:03

kaisecheng reviewed Oct 22, 2024

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x-pack/lib/monitoring/monitoring.rb Outdated Show resolved Hide resolved

Update x-pack/lib/monitoring/monitoring.rb

cb91379

Co-authored-by: kaisecheng <[email protected]>

andsel added 2 commits October 23, 2024 09:22

Fixed sunthax error

2e90f14

Added allow legacy flag to expose montoring section in API

8abc793

kaisecheng approved these changes Oct 23, 2024

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jsvd added status:approved and removed status:changes-requested labels Oct 23, 2024

Re-added yaml parsing lib that made the go build phase to fail

3d5ab00

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Introduce a new flag to explicitly permit legacy monitoring #16586

Introduce a new flag to explicitly permit legacy monitoring #16586

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Introduce a new flag to explicitly permit legacy monitoring #16586

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Introduce a new flag to explicitly permit legacy monitoring #16586

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andsel commented Oct 18, 2024 • edited Loading

Release notes

What does this PR do?

Why is it important/What is the impact to the user?

Checklist

Author's Checklist

How to test this PR locally

Related issues

Use cases

Logs

Logs without collection override

Logs with collection override

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Quality Gate passed

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andsel commented Oct 18, 2024 •

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