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bwizzy
Asked: 2010-04-20 13:31:48 +0800 CST

How to log nginx vhost bandwidth?

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I'm looking for a way to be able to track the bandwidth of multiple vhosts on an nginx web server. I'm guessing there is a way that I can set up the log files to output this information and then I can write a script to parse through the log files and add up the file sizes.

If that is the case does anyone know the correct log format, and if there is already a script out there that does this?

web-server bandwidth nginx

2 Answers

  1. You can define new logs and their format using ngx_http_log_module. You can use the following commands in http, server or location sections:

    log_format name format [format ...] defines the format of the new log. Variable $bytes_sent will add the number of bytes sent for every request, including the length of HTTP headers.

    access_log path [format [buffer=size]] specifies log-files. You can run this command for every vhost to define a separate log for every vhost.

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  2. There's a munin plugin that does exactly what you want - filters by specific vhosts and graphs it.

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