KNIFE-DATA-BAG(1) knife data bag KNIFE-DATA-BAG(1)NAMEknife-data-bag - The man page for the knife data bag subcommand.
A data bag is a global variable that is stored as JSON data and is
accessible from a Chef server. A data bag is indexed for searching and
can be loaded by a recipe or accessed during a search.
A data bag item may be encrypted using shared secret encryption. This
allows each data bag item to store confidential information (such as a
database password) or to be managed in a source control system (without
plain-text data appearing in revision history). Each data bag item may
be encrypted individually; if a data bag contains multiple encrypted
data bag items, these data bag items are not required to share the same
encryption keys.
The knife data bag subcommand is used to manage arbitrary stores of
globally available JSON data.
COMMON OPTIONS
The following options may be used with any of the arguments available
to the knife data bag subcommand:
--chef-zero-port PORT
The port on which chef-zero will listen.
-c CONFIG_FILE, --config CONFIG_FILE
The configuration file to use.
-d, --disable-editing
Use to prevent the $EDITOR from being opened and to accept data
as-is.
--defaults
Use to have Knife use the default value instead of asking a user
to provide one.
-e EDITOR, --editor EDITOR
The $EDITOR that is used for all interactive commands.
-E ENVIRONMENT, --environment ENVIRONMENT
The name of the environment. When this option is added to a com‐
mand, the command will run only against the named environment.
-F FORMAT, --format FORMAT
The output format: summary (default), text, json, yaml, and pp.
-h, --help
Shows help for the command.
-k KEY, --key KEY
The private key that Knife will use to sign requests made by the
API client to the Chef server.
--[no-]color
Use to view colored output.
--print-after
Use to show data after a destructive operation.
-s URL, --server-url URL
The URL for the Chef server.
-u USER, --user USER
The user name used by Knife to sign requests made by the API
client to the Chef server. Authentication will fail if the user
name does not match the private key.
-V, --verbose
Set for more verbose outputs. Use -VV for maximum verbosity.
-v, --version
The version of the chef-client.
-y, --yes
Use to respond to all confirmation prompts with "Yes". Knife
will not ask for confirmation.
-z, --local-mode
Use to run the chef-client in local mode. This allows all com‐
mands that work against the Chef server to also work against the
local chef-repo.
CREATE
The create argument is used to add a data bag to the Chef server.
Syntax
This argument has the following syntax:
$ knife data bag create DATA_BAG_NAME [DATA_BAG_ITEM] (options)
Options
This argument has the following options:
DATA_BAG_ITEM
The name of a specific item within a data bag.
--secret SECRET
The encryption key that is used for values contained within a
data bag item.
--secret-file FILE
The path to the file that contains the encryption key.
NOTE:
For encrypted data bag items, use either --secret or --secret-file,
not both.
Examples
To create a data bag named "admins", enter:
$ knife data bag create admins
to return:
Created data_bag[admins]
DELETE
The delete argument is used to delete a data bag or a data bag item
from a Chef server.
Syntax
This argument has the following syntax:
$ knife data bag delete DATA_BAG_NAME [DATA_BAG_ITEM] (options)
Options
This argument has the following options:
DATA_BAG_ITEM
The name of a specific item within a data bag.
Examples
$ knife data bag delete data_bag_name
To delete an item named "charlie", enter:
$ knife data bag delete admins charlie
Type Y to confirm a deletion.
EDIT
The edit argument is used to edit the data contained in a data bag. If
encryption is being used, the data bag will be decrypted, the data will
be made available in the $EDITOR, and then encrypted again before sav‐
ing it to the Chef server.
Syntax
This argument has the following syntax:
$ knife data bag edit DATA_BAG_NAME [DATA_BAG_ITEM] (options)
Options
This argument has the following options:
DATA_BAG_ITEM
The name of a specific item within a data bag.
--secret SECRET
The encryption key that is used for values contained within a
data bag item.
--secret-file FILE
The path to the file that contains the encryption key.
NOTE:
For encrypted data bag items, use either --secret or --secret-file,
not both.
Examples
To edit the contents of a data bag, enter:
$ knife data bag edit admins
To edit an item named "charlie" that is contained in a data bag named
"admins", enter:
$ knife data bag edit admins charlie
to open the $EDITOR. Once opened, you can update the data before saving
it to the Chef server. For example, by changing:
{
"id": "charlie"
}
to:
{
"id": "charlie",
"uid": 1005,
"gid": "ops",
"shell": "/bin/zsh",
"comment": "Crazy Charlie"
}
FROM FILE
The from file argument is used to:
· Add a data bag item to a data bag
· Update the contents of an existing data bag item
The data bag itself must already exist on the Chef server and must be
specified as part of the command. The contents of the data bag item are
specified using a JSON file. This JSON file may be located at a rela‐
tive or absolute path; its location must be specified as part of the
command. The JSON file that defines the contents of the data bag item
must at least contain the name of the data bag item---"id": "name".
WARNING:
A chef-client must be version 11.6 (or higher) when using the knife
data bag from file argument with the Enterprise Chef or Open Source
Chef version 11 servers.
Syntax
This argument has the following syntax:
$ knife data bag from file DATA_BAG_NAME_or_PATH
Options
This argument has the following options:
-a, --all
Use to upload all data bags found at the specified path.
--secret SECRET
The encryption key that is used for values contained within a
data bag item.
--secret-file FILE
The path to the file that contains the encryption key.
NOTE:
For encrypted data bag items, use either --secret or --secret-file,
not both.
Examples
To create a data bag on the Chef server from a file:
$ knife data bag from file "path to JSON file"
To create a data bag named "devops_data" that contains encrypted data,
enter:
$ knife data bag from file devops_data --secret-file "path to decryption file"
LIST
The list argument is used to view a list of data bags that are cur‐
rently available on the Chef server.
Syntax
This argument has the following syntax:
$ knife data bag list
Options
This argument has the following options:
-w, --with-uri
Use to show the corresponding URIs.
Examples
$ knife data bag list
SHOW
The show argument is used to view the contents of a data bag.
Syntax
This argument has the following syntax:
$ knife data bag show DATA_BAG_NAME (options)
Options
This argument has the following options:
DATA_BAG_ITEM
The name of a specific item within a data bag.
--secret SECRET
The encryption key that is used for values contained within a
data bag item.
--secret-file FILE
The path to the file that contains the encryption key.
NOTE:
For encrypted data bag items, use either --secret or --secret-file,
not both.
Examples
$ knife data bag show admins
to return something like:
charlie
To show the contents of a specific item within data bag, enter:
$ knife data bag show admins charlie
to return:
comment: Crazy Charlie
gid: ops
id: charlie
shell: /bin/zsh
uid: 1005
To show the contents of a data bag named "passwords" with an item that
contains encrypted data named "mysql", enter:
$ knife data bag show passwords mysql
to return:
## sample:
{
"id": "mysql",
"pass": "trywgFA6R70NO28PNhMpGhEvKBZuxouemnbnAUQsUyo=\n",
"user": "e/p+8WJYVHY9fHcEgAAReg==\n"
}
To show the decrypted contents of the same data bag, enter:
$ knife data bag show --secret-file /path/to/decryption/file passwords mysql
to return:
## sample:
{
"id": "mysql",
"pass": "thesecret123",
"user": "fred"
}
To view information in JSON format, use the -F common option as part of
the command like this:
$ knife data bag show admins -F json
Other formats available include text, yaml, and pp.
AUTHOR
Chef
Chef 11.14 KNIFE-DATA-BAG(1)
