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stickmangumby
Asked: 2010-11-28 18:00:25 +0800 CST

How do I monitor bandwidth used by rails apps?

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I run a server that hosts several small rails apps, and I want to track how much bandwidth each is using.

They are all running on Apache 2.2 and Passenger 3.

I used mod_cband for static sites, but this doesn't seem to work with passenger.

Is there a good way to track the bandwidth used by different apps? All I need is a breakdown of GB used - no graphs or hooks or API.

Thanks!

apache-2.2 ruby-on-rails bandwidth phusion-passenger mod-cband

1 Answers

  1. Best Answer

    in the httpd.conf file, if you have your CustomLog set to "combined" (which includes %I and %O for in/out sizes) then it tells you the size of each request.

    to get all in/out, run:

    cat access_log.1297296000 |awk '{ incoming += $(NF - 2) ; outgoing += $(NF - 1) } END { printf("in=%s out=%s\n",incoming,outgoing) }'

    to get just a specific app, you could run:

    grep /myapp1 access_log.1297296000 |awk '{ incoming += $(NF - 2) ; outgoing += $(NF - 1) } END { printf("in=%s out=%s\n",incoming,outgoing) }'
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