varnishadm - Control a running Varnish instance
varnishadm [-h] [-n ident] [-t timeout] [-S secretfile] [-T [address]:port]
utility establishes a CLI connection to varnishd either
using -n name
or using the -T and -S arguments. If -n name
given the location of the secret file and the address:port is looked up in
shared memory. If neither is given varnishadm
will look for an instance
without a given name.
If a command is given, the command and arguments are sent over the CLI
connection and the result returned on stdout.
If no command argument is given varnishadm
will pass commands and replies
between the CLI socket and stdin/stdout.
- Print program usage and exit.
- -n ident
- Connect to the instance of varnishd with this name.
- -S secretfile
- Specify the authentication secret file. This should be the same -S
argument as was given to varnishd. Only processes which can read
the contents of this file, will be able to authenticate the CLI
- -t timeout
- Wait no longer than this many seconds for an operation to finish.
- -T <address:port>
- Connect to the management interface at the specified address and
The syntax and operation of the actual CLI interface is described in the
manual page. Parameters are described in
Additionally, a summary of commands can be obtained by issuing the help
command, and a summary of parameters can be obtained by issuing the
If a command is given, the exit status of the varnishadm
utility is zero
if the command succeeded, and non-zero otherwise.
Some ways you can use varnishadm:
varnishadm -T localhost:999 -S /var/db/secret vcl.use foo
echo vcl.use foo | varnishadm -T localhost:999 -S /var/db/secret
echo vcl.use foo | ssh vhost varnishadm -T localhost:999 -S /var/db/secret
utility and this manual page were written by Cecilie
Fritzvold. This man page has later been modified by Per Buer, Federico G.
Schwindt and Lasse Karstensen.