NAME

       varnishlog - Display Varnish logs

SYNOPSIS

       varnishlog  [-a]  [-A]  [-b]  [-c] [-C] [-d] [-D] [-g <session|request|vxid|raw>] [-h] [-i
       taglist] [-I <[taglist:]regex>] [-k num] [-L limit] [-n name] [-N filename] [-P file]  [-q
       query]  [-r filename] [-t <seconds|off>] [-T seconds] [-v] [-V] [-w filename] [-x taglist]
       [-X <[taglist:]regex>]

OPTIONS

       The following options are available:

       -a     When writing output to a file  with  the  -w  option,  append  to  it  rather  than
              overwrite it.

       -A     When writing output to a file with the -w option, output data in ascii format.

       -b     Only display transactions and log records coming from backend communication.

       -c     Only display transactions and log records coming from client communication.

       -C     Do all regular expression and string matching caseless.

       -d     Start processing log records at the head of the log instead of the tail.

       -D     Daemonize.

       -g <session|request|vxid|raw>
              The grouping of the log records. The default is to group by vxid.

       -h     Print program usage and exit

       -i taglist
              Include  log  records of these tags in output. Taglist is a comma-separated list of
              tag globs. Multiple -i options may be given.

              If a tag include option is the first of any tag selection  options,  all  tags  are
              first marked excluded.

       -I <[taglist:]regex>
              Include  by  regex  matching.  Output  only  records  matching  taglist and regular
              expression. Applies to any tag if taglist is absent.

              If a tag include option is the first of any tag selection  options,  all  tags  are
              first marked excluded.

       -k num Process this number of matching log transactions before exiting.

       -L limit
              Sets  the upper limit of incomplete transactions kept before the oldest transaction
              is force completed. A warning record is synthesized when this happens. This setting
              keeps  an  upper  bound  on  the  memory usage of running queries. Defaults to 1000
              transactions.

       -n name
              Specify the name of the varnishd instance to get logs from. If -n is not specified,
              the host name is used.

       -N filename
              Specify  the  filename  of  a  stale  VSM  instance.  When  using  this  option the
              abandonment checking is disabled.

       -P file
              Write the process' PID to the specified file.

       -q query
              Specifies the VSL query to use.

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

       -t <seconds|off>
              Timeout before returning error on initial VSM connection. If set the VSM connection
              is retried every 0.5 seconds for this many  seconds.  If  zero  the  connection  is
              attempted only once and will fail immediately if unsuccessful. If set to "off", the
              connection will not fail, allowing the utility to start and wait  indefinetely  for
              the Varnish instance to appear.  Defaults to 5 seconds.

       -T seconds
              Sets the transaction timeout in seconds. This defines the maximum number of seconds
              elapsed between a Begin tag and the End tag. If  the  timeout  expires,  a  warning
              record  is  synthesized  and  the  transaction  is force completed. Defaults to 120
              seconds.

       -v     Use verbose output on record set printing, giving  the  VXID  on  every  log  line.
              Without this option, the VXID will only be given on the header of that transaction.

       -V     Print version information and exit.

       -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.

       -x taglist
              Exclude  log  records of these tags in output. Taglist is a comma-separated list of
              tag globs. Multiple -x options may be given.

       -X <[taglist:]regex>
              Exclude by regex matching. Do not  output  records  matching  taglist  and  regular
              expression. Applies to any tag if taglist is absent.

SIGNALS

       • SIGHUP

         Rotate the log file (see -w option)

       • SIGUSR1

         Flush any outstanding transactions

SEE ALSO

       • varnishd(1)

       • varnishhist(1)

       • varnishncsa(1)

       • varnishstat(1)

       • varnishtop(1)

       • vsl(7)

       • vsl-query(7)

HISTORY

       The  varnishlog  utility  was  developed  by  Poul-Henning  Kamp  <phk@phk.freebsd.dk>  in
       cooperation with Verdens Gang AS and Varnish Software AS. This manual page  was  initially
       written by Dag-Erling Smørgrav, and later updated by Per Buer and Martin Blix Grydeland.

COPYRIGHT

       This  document  is  licensed  under  the  same  licence as Varnish itself. See LICENCE for
       details.

       • Copyright (c) 2006 Verdens Gang AS

       • Copyright (c) 2006-2015 Varnish Software AS

                                                                                    VARNISHLOG(1)