What happens if Elasticsearch to down while the elastic apm agent is sending data?

Elastic Observability APM
1

What happens if Elasticsearch to down while the elastic apm agent is sending data? Is information lost?

Kibana version:
8.7.1
Elasticsearch version:
8.7.1
APM Server version:
v1.15.0
APM Agent language and version:
PHP
Original install method (e.g. download page, yum, deb, from source, etc.) and version:
APM agents on edge machines send data to a centrally hosted APM integration on Elastic Agent

2

Hey @Jackson_Castilho ,

Depending on the size of APM Server, it will buffer data in-memory. If the connection with Elasticsearch doesn't recover then the server stop accepting requests and the APM agents will start receiving errors from the server. At this point, data loss can happen.

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