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)