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Update _kbarticles/2024-12-06-migrating-opensearch.md
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Perfect, thanks

Co-authored-by: Mark Boyd <[email protected]>
Signed-off-by: Peter Burkholder <[email protected]>
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pburkholder and markdboyd authored Dec 6, 2024
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Expand Up @@ -117,8 +117,9 @@ The Cloud.gov team has implemented OpenSearch to deliver a number of benefits to
* Extremely large log messages (over 1Gb) are trimmed and tagged `_logtrimmed` -- such message are probably indicative of a coding error in your application.
* You can search for such messages with a filter of `@logs is one of "_messagetrimmed", "_logtrimmed"`, as shown here
![Screenshot from OpenSearch edit filter with settings as described above]({{site.baseurl}}/assets/images/content/opensearch-logtrimmed.png)
* AWS Brokered Service Logs (Beta): If your Cloud.gov organization had already arranged Cloudwatch ingest of RDS database logs, then you can filter for those logs with the filter `@version: 1`. Most databases, as of December 2024, are not yet shipped to Cloudwatch and OpenSearch.
* Cloud.gov will be expanding the availability and features of RDS logs, and other brokered services, in 2025. This is a [beta feature]({{site.baseurl}}/docs/services/intro/#support-status) and subject to change.
* AWS Brokered Service Logs (Beta): If your Cloud.gov organization had already worked with Cloud.gov support to enable publishing of your RDS database logs to Cloudwatch, then you can search for those logs with the filter `@version: 1`. Most databases, as of December 2024, are not yet publishing their logs to CloudWatch and thus will not appear in OpenSearch.
* Cloud.gov will be expanding the availability of logs from other brokered services in 2025. This is a [beta feature]({{site.baseurl}}/docs/services/intro/#support-status) and subject to change.
* Cloud.gov is working to make enabling publishing of RDS database logs to CloudWatch a self-service feature of the [database broker]({{ site.baseurl }}/docs/services/relational-database.md), but there is no ETA yet for delivery of this feature.
* JSON log parsing: Custom logs are not at risk of being dropped because of index field limits. JSON logs are now ingested using the [flat_object field type](https://opensearch.org/docs/latest/field-types/supported-field-types/flat-object/) in OpenSearch. The `flat_object` field type allows for [searching nested fields of a JSON object](https://opensearch.org/docs/latest/field-types/supported-field-types/flat-object/#using-flat-object) using dot notation.
* Additional container metrics: We now log additional container metrics, available under the `containermetric.name` field. Particularly useful is the `containermetric.name: cpu_entitlement`, which is a way to track whether you're [exceeding the allowed CPU for your apps](https://www.cloudfoundry.org/blog/better-way-split-cake-cpu-entitlements/).

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