knife(1) - Chef Server API client utility

1. knife(1)
2. Chef Manual
3. knife(1)

## NAME

`knife` - Chef Server API client utility

## SYNOPSIS

knife sub-command [argument...] (options)

## DESCRIPTION

Knife is a command-line utility used to manage data on a Chef server through the HTTP(S) API. Knife is organized into groups of subcommands centered around the various object types in Chef. Each category of subcommand is documented in its own manual page. Available topics are:

- bootstrap
- client
- configure
- cookbook-site
- cookbook
- data-bag
- environment
- exec
- index
- node
- recipe
- role
- search
- ssh
- status
- tag

If the knife manuals are in your `MANPATH`, you can access help for the above topics using `man knife-TOPIC`; otherwise, you can view the documentation using `knife help TOPIC`.

## OPTIONS

`-s`, `--server-url` URL
  Chef Server URL, corresponds to `Chef::Config` `chef_server_url`.
`-k`, `--key` KEY
  API Client Key, corresponds to `Chef::Config` `client_key`.
`-c`, `--config` CONFIG
  The configuration file to use
`-E`, `--environment ENVIRONMENT`
  Set the Chef environment
`-e`, `--editor` EDITOR
  Set the editor to use for interactive commands
`-F`, `--format` FORMAT
  Which format to use for output. See FORMATS for details.
`-d`, `--disable-editing`
  Do not open EDITOR, just accept the data as is
`-u`, `--user` USER
  API Client Username, corresponds to `Chef::Config` `node_name`.
`-p`, `--print-after`
  Show the data after a destructive operation
`-v`, `--version`
  Show chef version
`-V`, `--verbose`
  More verbose output. Use twice for max verbosity.
`-y`, `--yes`
  Say yes to all prompts for confirmation
`--defaults`
  Accept default values for all questions
`--[no-]color`
  Use colored output. Color enabled by default.
`-h`, `--help`
  Show the available options for a command.

## SUB-COMMANDS

Sub-commands that operate on the basic Chef data types are structured as NOUN verb NOUN (options). For all data types, the following commands are available:

- create (create)
- list and show (read)
- edit (update)
- delete (destroy)

Knife also includes commands that take actions other than displaying or modifying data on the Chef Server, such as knife-ssh(1).

## CONFIGURATION

The knife configuration file is a Ruby DSL to set configuration parameters for Knife's GENERAL OPTIONS. The default location for the config file is `~/.chef/knife.rb`. If managing multiple Chef repositories, per-repository config files can be created. The file must be `.chef/knife.rb` in the current directory of the repository.

If the config file exists, knife uses these settings for GENERAL OPTIONS defaults.

- `node_name`: User or client identity (i.e., name) to use for authenticating requests to the Chef Server.
- `client_key`: Private key file to authenticate to the Chef server. Corresponds to the `-k` or `--key` option.
- `chef_server_url`: URL of the Chef server. Corresponds to the `-s` or `--server-url` option. This is requested from the user when running this sub-command.
- `syntax_check_cache_path`: Specifies the path to a directory where knife caches information about files that it has syntax checked.
- `validation_client_name`: Specifies the name of the client used to validate new clients.
- `validation_key`: Specifies the private key file to use when bootstrapping new hosts. See knife-client(1) for more information about the validation client.
- `cookbook_copyright`, `cookbook_email`, `cookbook_license`, `readme_format` Used by `knife cookbook create` sub-command to specify the copyright holder, maintainer email, license and readme format (respectively) for new cookbooks. The copyright holder is listed as the maintainer in the cookbook's metadata and as the Copyright in the comments of the default recipe. The maintainer email is used in the cookbook metadata. The license determines what preamble to put in the comment of the default recipe, and is listed as the license in the cookbook metadata. Currently supported licenses are "apachev2" and "none". Any other values will result in an empty license in the metadata (needs to be filled in by the author), and no comment preamble in the default recipe. Currently supported readme formats are "md", "mkd", "txt", and "rdoc". Any other value will result in an unformatted README.

## FILES

~/.chef/knife.rb

Ruby DSL configuration file for knife. See CONFIGURATION.

## FORMATS

The amount of content displayed and the output format are modified by the `--format` option. If no alternate format is selected, the default is summary.

Valid formats are:

`summary`
  displays the node in a custom, summarized format (default)
`text`
  displays the node data in its entirety using the colorized tree display
`json`
  displays the node in JSON format
`yaml`
  displays the node in YAML format
`pp`
  displays the node using Ruby's pretty printer.

For brevity, only the first character of the format is required, for example, -Fj will produce JSON format output.

## CHEF WORKFLOW

When working with Chef and Knife in the local repository, the recommended workflow outline looks like:

- Create repository. A skeleton sample is provided at http://github.com/opscode/chef-repo/.
- Configure knife, see CONFIGURATION.
- Download cookbooks from the Opscode cookbooks site, see COOKBOOK SITE SUB-COMMANDS.
- Or, create new cookbooks, see `cookbook create` sub-command.
- Commit changes to the version control system. See your tool's documentation.
- Upload cookbooks to the Chef Server, see COOKBOOK SUB-COMMANDS.
- Launch instances in the Cloud, OR provision new hosts; see CLOUD COMPUTING SUB-COMMANDS and BOOTSTRAP SUB-COMMANDS.
- Watch Chef configure systems!

A note about git: Opscode and many folks in the Chef community use git, but it is not required, except in the case of the `cookbook site vendor` sub-command, as it uses git directly. Version control is strongly recommended though, and git fits with a lot of the workflow paradigms.

## EXAMPLES

## ENVIRONMENT

`EDITOR`
  The text editor to use for editing data. The --editor option takes precedence over this value, and the --disable-editing option supresses data editing entirely.

## SEE ALSO

chef-client(8) chef-server(8) chef-shell(1)

knife-bootstrap(1) knife-client(1) knife-configure(1) knife-cookbook-site(1) knife-cookbook(1) knife-data-bag(1) knife-environment(1) knife-exec(1) knife-index(1) knife-node(1) knife-recipe(1) knife-role(1) knife-search(1) knife-ssh(1) knife-tag(1)

Complete Chef documentation is available online: http://wiki.opscode.com/display/chef/Home/

JSON is JavaScript Object Notation http://json.org/

SOLR is an open source search engine. http://lucene.apache.org/solr/

git(1) is a version control system http://git-scm.com/

This manual page was generated from Markdown with ronn(1) http://rtomayko.github.com/ronn/ronn.1.html

## AUTHOR

Chef was written by Adam Jacob adam@opscode.com of Opscode (http://www.opscode.com), with contributions from the community.

## DOCUMENTATION

This manual page was written by Joshua Timberman joshua@opscode.com.

## LICENSE

Both Chef and this documentation are released under the terms of the Apache 2.0 License. You may view the license online: http://www.apache.org/licenses/LICENSE-2.0.html On some systems, the complete text of the Apache 2.0 License may be found in `/usr/share/common-licenses/Apache-2.0`.

## CHEF

Knife is distributed with Chef. http://wiki.opscode.com/display/chef/Home

1. Chef 11.8.2
2. December 2013
3. knife(1)