LinuxQuestions.org - [SOLVED] Up-/download rate for a single host (from shell)

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Up-/download rate for a single host (from shell)

Hi all,

I have a slave node uploading all kinds of backups to my server in the internet. Now I would like to display the actual upload and download rate to this server (not the entire nic-traffic, any protocol) in a small php-page for easy monitoring.

I had a look at quite some monitoring tools and the one which kind of offers what I am looking for is iftop with a filter on the IP of my server. As I would like to periodically update a file with the actual rates, an interactive program won't do.

A possibility would be to filter the packages myself using http://search.cpan.org/~kcarnut/Net-Pcap-0.05/Pcap.pm
but this seems to be quite a long shot.

The optimal solution would be a program or script printing out the actual upload to a host specified in the options to STDOUT.

Thank you for your help

Have you looked at ntop? http://www.ntop.org/

Not sure about filtering capabilities but I think its worth trying.

Hi tva,

yeah I looked into it - it is pretty heavyweight and a bit complicated to get the actual up/download rate with a script (I tried filtering through the output with perl regexp). looking into gathering packets for a second or two with ngrep and dumping them into a temp file - but this too is ugly as hell...

Hi,

solved it using iptables:

Code:

iptables -N myserver

iptables -A INPUT

iptables -A OUTPUT

iptables -A OUTPUT -d myserverip/32 -j myserver

iptables -A INPUT -s myserverip/32 -j myserver

and I query it every minute with:

Code:

iptables -L -v -n -x -Z

with a little reformatting and some minor calculations I get what I want without having to collect any packets.
Cheers!