Got kill signal with, "level=error msg="Failed to run iperf3: signal: killed""

[mrezabarkhordari]

Hi,
after running iperf3_exporter from time to time and randomly (without a specific pattern) got this error which tells the iperf3 is killed
do you have any idea?

[Benedict1033]

Have you solved the problem? I have the same problem

[fpmb]

Realise this is old but just ran into the same or similar...

Error message could perhaps be improved (apologies for being lazy and not submitting a PR). For me, it was iperf3 timing out as I had the scrape_interval in Prometheus set low for testing purposes which caused the scrape_timeout to kick in on my slow network.

The scrape_timeout for a scrape job (or globally) has to be less than the scrape_interval which makes sense... don't want Prometheus repeating the same testing when the previous one hasn't completed.

Example:

  - job_name: 'iperf3_exporter'
    scrape_interval: 5m
    scrape_timeout: 1m
    [...]

... so scrape_interval must be infrequent enough to allow iperf3 to complete a test which for me meant scrape_timeout of 1m was plenty of time for the iperf3 test to complete even on my slow network :)

Many thanks to @edgard for the useful image!