Azure IOT hub edge agent metrics not sending metrics related to memory usage by the module when using raspberry Pi.

[thechromosomes]

Expected Behavior

Azure IOT hub edge agent metrics should send metrics related to memory usage by the module

Current Behavior

Azure IOT hub edge agent metrics not sending metrics related to memory usage by the module

Steps to Reproduce

Provide a detailed set of steps to reproduce the bug.

1. deploy edge runtime on Raspberry Pi Bullseye
2. expose the edge agent metrics
3. check _edgeAgent_used_memorybytes

Click here

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Device Information

• Host OS Raspberry Pi Bullseye :
• Architecture linux/arm:
• Container OS Raspberry PI Bullseye:

Runtime Versions

• aziot-edged 1.4.10:
• Edge Agent 1.1:
• Edge Hub 1.1:
• Docker/Moby 20.10.25+azure-1:

Additional Information

REF: https://learn.microsoft.com/en-us/answers/questions/1424158/azure-iot-hub-edge-agent-metrics-not-sending-metri

[nyanzebra]

Hi @thechromosomes, few questions.

1. Do you have any allow/disallow rules that might be preventing the metric from being collected? See here for Allowed/Blocked metrics
2. If you scrape http://edgeAgent:9600/metrics do you see the metric? If not, what metrics do you see?
3. If you are using the MetricCollector, would you mind sharing what your config for the module looks like?

[thechromosomes]

Hi @thechromosomes, few questions.

1. Do you have any allow/disallow rules that might be preventing the metric from being collected? See here for Allowed/Blocked metrics
2. If you scrape http://edgeAgent:9600/metrics do you see the metric? If not, what metrics do you see?
3. If you are using the MetricCollector, would you mind sharing what your config for the module looks like?

Hi @nyanzebra,

I am using custom metrics solution using Prometheus. exact same configuration is working for non raspberry Pi devices(like ubuntu), raspberry Pi is also producing the memory metrics but its only producing the metrics related to the host not for all the module deployed in the edge runtime.

Raspberry pi metrics (memory usage)

ubuntu metrics (memory usage)

[nyanzebra]

@thechromosomes, so just to understand fully, if you run iotedge list from both devices you have same modules running and from grafana you are using edgeAgent_used_memory_bytes for the metric? If so, would you mind providing debug logs for edgeAgent on the pi device?

[jlian]

@thechromosomes any updates

[jlian]

Closing for now. We can reopen when we get the logs