Missing helm field EF_OUTPUT_ELASTICSEARCH_ADDRESSES

[jorgevisentini]

After deploying helm elastiflow, the log output is as follows:

{"level":"info","ts":"2025-01-04T00:03:46.818Z","logger":"flowcoll.bootstrapper[elasticsearch]","caller":"elasticsearch/bootstrap.go:163","msg":"index template insert process is enabled"} {"level":"error","ts":"2025-01-04T00:03:46.819Z","logger":"flowcoll.bootstrapper[elasticsearch]","caller":"elasticsearch/bootstrap.go:148","msg":"failed to bootstrap elasticsearch. retrying...","code":"elasticsearch/bootstrap-failure","reason":"error while creating default ilm policy: error while checking if ilm policy exists: error while checking ilm policy 'elastiflow' exists: Get \"http://127.0.0.1:9200/_ilm/policy/elastiflow\": dial tcp 127.0.0.1:9200: connect: connection refused","stacktrace":"github.com/elastiflow/flowcoll/pkg/outputs/elasticsearch.(*Bootstrap).Run\n\t/app/pkg/outputs/elasticsearch/bootstrap.go:148\ngithub.com/elastiflow/flowcoll/pkg/outputs/elasticsearch.NewInstantiatorRegistration.newCreateInstanceFunc.func1\n\t/app/pkg/outputs/elasticsearch/instance_registration.go:159\ngithub.com/elastiflow/go-env-conf/instantiator.(*Instantiator).Run\n\t/go/pkg/mod/github.com/elastiflow/go-env-conf@v0.8.6/instantiator/instantiator.go:78\ngithub.com/elastiflow/flowcoll/pkg/apps/unified_flowcoll.(*App).Run\n\t/app/pkg/apps/unified_flowcoll/app.go:156\nmain.main\n\t/app/cmd/flowcoll/main.go:108\nruntime.main\n\t/usr/local/go/src/runtime/proc.go:271"}

I believe there is a missing field to indicate the elasticsearch connection service

As a future improvement, they could customize the helm to include the field EF_OUTPUT_ELASTICSEARCH_ADDRESSES

[kgrubb]

Out of the box, there are multiple different outputs that the collector can reach out to. By default, none of the outputs are configured. Would it help to have an example or two in the README that explains how to add the EF_OUTPUT_ELASTICSEARCH_ADDRESSES variable to the chart?