Spring micrometer actuator StatsD tags definition - spring

Question

I'm trying to configure spring actuator metrics along with micrometer to be sent to Datadog stastd agent.
Still, I'd like to get them all sent with a tag, so that I can filter in my Datadog dashboard just my service metrics, and not considering other services metrics.
I've added:
management:
metrics:
tags:
application: my_app
to my service metrics configuration, but I can't see this tag value in Datadog dashboard. I'm not seeing anything weird in app logs nor actuator logfile neither.
I have nothing else regarding metrics in my service, as I don't want to implement custom metrics, just want to use the one provided by actuator.
This is how the whole metrics configuration looks like:
management:
metrics:
export:
statsd:
host: ${STATSD_AGENT_HOST}
port: ${STATSD_AGENT_HOST_PORT}
flavor: datadog
tags:
application: my_app
endpoints:
web:
exposure:
include: "*"
endpoint:
health:
show-details: ALWAYS
Versions:
micrometer version: 1.6.4
actuator version: 2.4.3
spring version: 2.3.8
Any clue about what I could be missing to get the tag reaching Datadog?
Thanks!

Answer 1

We figured this out in the comments, I'm posting an answer that summarizes it all up: it seems the root cause was using different versions of different spring-boot modules.
It is a good rule of thumb to not define the versions yourself but use BOMs and let them define the versions for you, e.g. see: spring-boot-dependencies. This way you will use the compatible (and tested) versions.
management.metrics.tags.your-tag is the way to add tags to all of your metrics. A good way to check this is looking at /actuator/metrics.