varnishlog - Display Varnish logs
varnishlog [-a] [-A] [-b] [-c] [-C] [-d] [-D] [-E] [-g
<session|request|vxid|raw>] [-h] [-i <taglist>] [-I
<[taglist:]regex>] [-k <num>] [-L <limit>] [-n <dir>]
[-P <file>] [-Q <file>] [-q <query>] [-r <filename>]
[-R <limit[/duration]>] [-t <seconds|off>] [-T <seconds>]
[-u] [-v] [-V] [-w <filename>] [-x <taglist>] [-X
<[taglist:]regex>]
The following options are available:
- -a
- When writing output to a file with the -w option, append to
it rather than overwrite it. This option has no effect without the -w
option.
- -A
- When writing output to a file with the -w option, output
data in ascii format. This option has no effect without the -w
option.
- -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.
- -E
- Display ESI transactions and other client
transactions.
-
-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 <file>
- Specifies the file containing the VSL query to use. When
multiple -Q or -q options are specified, all queries are considered as if
the 'or' operator was used to combine them.
-
-q <query>
- Specifies the VSL query to use. When multiple -q or -Q
options are specified, all queries are considered as if the 'or' operator
was used to combine them.
-
-r <filename>
- Read log in binary file format from this file. The file can
be created with varnishlog -w filename. If the filename is -, logs
are read from the standard input. and cannot work as a daemon.
-
-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.
- -u
- When writing output to a file with the -w option, output
data is not buffered. This option has no effect without the -w
option.
- -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. If the filename is -, varnishlog writes to
the standard output and cannot work as a daemon.
-
-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.
- •
- SIGHUP
Rotate the log file (see -w option) in daemon mode, abort the loop and die
gracefully when running in the foreground.
- •
- SIGUSR1
Flush any outstanding transactions
The varnishlog utility was developed by Poul-Henning Kamp <
[email protected]> 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.
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