MaxListenersExceededWarning: EventEmitter memory leak detected in MeshCentral server logs

[adimate71]

Hi,

I’m encountering an issue with the MeshCentral server logs where the following warning appears repeatedly:

(node:1529) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 close listeners added to [Socket]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit
(Use node --trace-warnings ... to show where the warning was created)
(node:1529) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 error listeners added to [Socket]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit

(node:1529) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 close listeners added to [Socket]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit
(node:1529) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 error listeners added to [Socket]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit

I’m concerned it may point to a potential issue with memory management or improper event listener handling. Additionally, I’m worried that this could indicate a deeper problem in the event-driven architecture that might expose vulnerabilities, such as memory leaks or unhandled errors that could be exploited.

Could you please help me understand the cause of this warning and recommend steps to resolve it?

"meshVersion": "v1.1.33",
"nodeVersion": "v20.18.0",
"runMode": "WAN mode",
"productionMode": true,
"database": "NeDB",
"platform": "linux",
"arch": "x64

Thank you

[adimate71]

Could you please advise?

[si458]

I haven't been able to replicate this issue at all, the only thing I can suggest is restart the meshcentral service and that will free up memory and let it start again

[adimate71]

Hi,
I restarted the service and rebooted the virtual machine. However, the same logs continue to appear in the server’s logs.
Please advise.
Thank you

[si458]

@adimate71 again, I can not replicate the issue at the moment, but the minute I can, I can try and fix it

Unless u can explain you did X, then logs appeared,
Or
I did Y X number of times, and then it appeared

Does it just appear straight away after you start meshcentral or gradually?

[adimate71]

I have not made any changes or updated the server (Ubuntu 22.04).
The logs appear after a few hours after the server restart.
Thank you