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I have a Ubuntu 16.04 server (Xenial Xerus). My server statistics say that last night there was a bandwidth peak at 3+ TB, and I don't know why. I tried SLURM, and it showed that I actually used that traffic:

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Is there any way I can find out what caused this traffic?

Law29
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Sibidharan
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2 Answers2

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If you don't already have monitoring installed and configured then you have not history. You can't get the information you want.

user9517
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If you do not have anything currently installed that is monitoring and logging then you do not have any way to narrow down which process(s) were consuming bandwidth. I would recommend vnstat or mrtg for overall usage statistics and nethogs for narrowing down which process is using your network bandwidth.

You can install all three by running these commands:

sudo apt-get update
sudo apt-get install nethogs
sudo apt-get install vnstat vnstati
sudo apt-get install mrtg mrtg-contrib mrtg-ping-probe mrtg-rrd mrtgutils mrtgutils-sensors pcp-import-mrtg2pcp

This will install each of the programs along with their associated modules and utilities.

Braiam
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NGX
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