elastic / elastic/integrations
mongodb log pipeline does not parse ISO8601 timestamp, resulting in event missing @timestamp and getting rejected on index
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Integration:mongodb
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Description
https://github.com/elastic/integrations/blob/9f744b6f150d31dbbc1a8cd8b367c70e0fbbb5f3/packages/mongodb/data_stream/log/elasticsearch/ingest_pipeline/pipeline-plaintext.yml#L13
The date processor will not parse a mongdb log event in the format below with a valid ISO8601 timestamp.
`
"2025-05-23T22:42:15.494Z I CONNPOOL [Replication] Connecting to MYSYSTEMNAME:27017"
`
Issue can be resolved by adding the ISO8601 pattern.
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