Dynatrace integration with OpenTelemetry

[pnjha]

I am trying to setup metrics collection with dynatrace as backend and using opentelemetry collector. I am using collector image: otel/opentelemetry-collector-contrib:0.59.0

Collector config

receivers:
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317
    processors:
      batch:
        send_batch_max_size: 10
        send_batch_size: 2
        timeout: 30s
    exporters:
      logging:
      dynatrace:
        prefix: otel
        timeout: 30s
        default_dimensions:
          dimension_example: dimension_value
        endpoint: "https://apm.cf.stagingaws.hanavlab.ondemand.com/e/121ba5cc-bee6-4007-9103-80b0f498503e/api/v2/metrics/ingest"
        api_token: "<redacted>"
        retry_on_failure:
          enabled: true
          initial_interval: 5s
          max_interval: 30s
          max_elapsed_time: 120s
        sending_queue:
          enabled: true
          num_consumers: 10
          queue_size: 5000
    service:
      pipelines:
        metrics:
          receivers: [otlp]
          processors: [batch]
          exporters: [dynatrace]

With this configuration I am getting following error

2022-09-05T05:10:21.754Z	error	dynatraceexporter@v0.53.0/metrics_exporter.go:207	failed to send request	{"kind": "exporter", "name": "dynatrace", "error": "Post \"https://apm.cf.stagingaws.hanavlab.ondemand.com/e/121ba5cc-bee6-4007-9103-80b0f498503e/api/v2/metrics/ingest\": stream error: stream ID 1; ENHANCE_YOUR_CALM; received from peer"}
github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter.(*exporter).sendBatch
	github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter@v0.53.0/metrics_exporter.go:207
github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter.(*exporter).send
	github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter@v0.53.0/metrics_exporter.go:179
github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter.(*exporter).PushMetricsData
	github.com/open-telemetry/opentelemetry-collector-contrib/exporter/dynatraceexporter@v0.53.0/metrics_exporter.go:112
go.opentelemetry.io/collector/exporter/exporterhelper.(*metricsRequest).export
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/metrics.go:65
go.opentelemetry.io/collector/exporter/exporterhelper.(*timeoutSender).send
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/common.go:225
go.opentelemetry.io/collector/exporter/exporterhelper.(*retrySender).send
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/queued_retry.go:176
go.opentelemetry.io/collector/exporter/exporterhelper.(*metricsSenderWithObservability).send
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/metrics.go:132
go.opentelemetry.io/collector/exporter/exporterhelper.(*queuedRetrySender).start.func1
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/queued_retry_inmemory.go:119
go.opentelemetry.io/collector/exporter/exporterhelper/internal.consumerFunc.consume
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/internal/bounded_memory_queue.go:82
go.opentelemetry.io/collector/exporter/exporterhelper/internal.(*boundedMemoryQueue).StartConsumers.func2
	go.opentelemetry.io/collector@v0.53.0/exporter/exporterhelper/internal/bounded_memory_queue.go:69
2022-09-05T05:10:21.754Z	info	exporterhelper/queued_retry.go:215	Exporting failed. Will retry the request after interval.	{"kind": "exporter", "name": "dynatrace", "error": "sendBatch: Post \"https://apm.cf.stagingaws.hanavlab.ondemand.com/e/121ba5cc-bee6-4007-9103-80b0f498503e/api/v2/metrics/ingest\": stream error: stream ID 1; ENHANCE_YOUR_CALM; received from peer", "interval": "6.215867508s"}

The api token has metrics.ingest and metrics.write access. Can someone point me to the issue here? 

[joaograssi · Accepted solution]

Hello @pnjha !

Looking at your collector configuration, I see you are using the batch processor. At first sight, without knowing much about your individual setup, it appears the collector export requests are being throttled by the Dynatrace API.

The batch size you have configured seems very low (2). Depending on how many metrics you send to the collector, this will cause a lot of requests to be sent to the Dynatrace API, which will be throttled as we have documented in API Throttling.

Note that in the batch processor docs for the send_batch_size it says:

Number of spans, metric data points, or log records after which a batch will be sent regardless of the timeout

With your current collector config, as soon as you have 2 metrics, the export request will be sent, regardless of the 30s timeout you have.

As a first attempt in solving the issue, I would suggest you either use the default batch size (8192) as defined in the batch processor docs, or a bigger value than what you have now and see if that helps.

If that doesn't help, we would kindly ask you to open a support case so we can investigate it further for your individual setup.

[pnjha1]

Hi @joaograssi ,

Thanks for the reply. I faced the same issue with batch size as 1000. But nevertheless will try with your suggestion as well.

[joaograssi]

Hi @pnjha1 
Did you have any luck with changing the batch size? The rate limiting could also be coming from maybe another component in your infrastructure, between the OTel collector and the Dynatrace API. Maybe that also helps you in finding out more.

[pnjha]

Hi @joaograssi ,

Unfortunately increasing the batch size did not solve the issue. Looking at the error message it does seems like it is coming from dynatrace itself. I tried sending the metrics to a seperate dynatrace trial environment and there I was successful to send the data. Seems like there is some restriction in the managed dynatrace env which is causing this. Just to confirm from you end does the error message indicate what kind of restriction/limitation is causing this? If not then I guess you also can't help much here.

[andre_vdveen]

Seeing at this works when sending to a SaaS tenant, is the Managed env. accessible to the OTel exporter?

[joaograssi · Accepted solution]

Hi @pnjha I see.

In order to help you better, I'd kindly ask you to follow up via a support ticket so one of my colleagues can better investigate things with you. It could be maybe a proxy in between the ActiveGate limiting the requests in another way, but without knowing your infrastructure setup in detail it's hard to guess.