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  <dir>]  [-P  <file>]  [-q
       <query>]  [-r  <filename>]  [-R <limit[/duration]>] [-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     Process log records at the head of the log and exit.

       -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. 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.

       -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 <dir>
              Specify  the  varnishd  working directory (also known as instance name) to get logs
              from. If -n is not specified, the host name is used.

       -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.

       -R <limit[/duration]>
              Restrict  the  output to the specified limit. Transactions exceeding the limit will
              be suppressed. The limit is specified as the maximum number of  transactions  (with
              respect  to the chosen grouping method) and an optional time period. If no duration
              is specified, a default of s is used. The duration field can be formatted as in VCL
              (e.g.  -R  10/2m) or as a simple time period without the prefix (e.g. -R 5/m). When
              in -g raw grouping mode, this setting can not be used alongside -i, -I, -x  or  -X,
              and we advise using -q instead.

       -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. Multiple -X options may be
              given.

       --optstring
              Print the optstring parameter to getopt(3) to help writing wrapper scripts.

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)