Elastiflow error message in docker

ElastiFlow Community
1

Hi, I am new to Elastiflow.

Now, I’ve just tried to install Elastiflow using docker image on TrueNAS CE 25.10.
Then, I get this error-log message in docker container.

What do I need to do for fixing it?

{“level”:“error”,“ts”:“2026-01-12T07:27:51.234Z”,“caller”:“metrics/metrics_documents.go:479”,“msg”:“[metrics]: failed to parse metrics”,“code”:“metrics/parse-error”,“reason”:“reading text format failed: text format parsing error in line 1: invalid metric name”,“stacktrace”:“``github.com/elastiflow/flowcoll/pkg/metrics.parsePrometheusMetrics``\n\t/app/pkg/metrics/metrics_documents.go:479”}

2

This looks like an issue with gathering metrics from the flow collector. I have never seen this error before.

My best guess is that there is some port conflict, like maybe the default 8080 API port ( EF_API_PORT: 8080 ) conflicts with something already running/using that port. I’d check the full logs to see if there is some other issue reported before this one.

Regards,

Dexter

3

@dxturner
Hi, Thanks for your comment.

Well, I have not configured this docker-compose.yaml. and Default API port was commented out.
I set Default API Port to the other number, then the error is disappeared now. Great!

But, I can not access to the dashboard yet. I think I need to check my set-up.
I have just followed docker installation here : Installation using Docker | ElastiFlow

Is there any good guide for setting up?

4

Do you have Elasticsearch/Kibana installed, or OpenSearch/OpenSearch Dashboards?

We have some example ‘docker compose’ files for Elasticsearch/Kibana at Single "Lab" Server | ElastiFlow Documentation if that helps.