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Moon
Asked: 2011-08-30 14:56:41 +0800 CST

where can i find varnish log files? /var/log/varnish is empty

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I'm trying to read log files of Varnish server in Ubuntu environment.

I actually never used Varnish before.

so...I cd to /var/log/varnish, but the folder is empty.

it tells me that I have to configure my varnish server to save logs...is that true?

logging varnish

2 Answers

  1. Best Answer

    by default varnish will not log anywhere.. you have to run a command to get it to show logs

    You can run the command 

    varnishncsa

    For more info on how to use that command to write to a log instead of stdout

    http://www.go2linux.org/linux/2011/05/configure-varnish-logs-varnishnsca-logrotate-and-awstats-1014

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  2. We could use varnishlog too, a better remembered name compared with varnishncsa.

    We need run it with root privilege - sudo varnishlog, otherwise somethime it will said VSM: Could not get hold of varnishd, is it running?.

    For writing log to file, we could run sudo varnishlog -w <filename>.

    -w <filename>
    Redirect output to file.
    The file will be overwritten unless the -a option was specified.
    If the application receives a SIGHUP in daemon mode the file will be reopened allowing the old one to be rotated away.
    The file can then be read by varnishlog and other tools with the -r option, unless the -A option was specified. This option is required when running in daemon mode.

    For reading the log file, we could run sudo varnishlog -r <filename>.

    -r <filename>
    Read log in binary file format from this file. The file can be created with varnishlog -w filename.

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