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knife_data_bag.md

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+++ title = "knife data bag" draft = false

aliases = ["/knife_data_bag.html"]

[menu] [menu.docs] title = "knife data bag" identifier = "chef_workstation/chef_workstation_tools/knife/knife_data_bag.md knife data bag" parent = "chef_workstation/chef_workstation_tools/knife" weight = 120 +++

[edit on GitHub]

{{% data_bag %}}

{{% data_bag_encryption %}}

{{% knife_data_bag_summary %}}

{{< note >}}

{{% knife_common_see_common_options_link %}}

{{< /note >}}

create

Use the create argument to add a data bag to the Chef Infra 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. DATA_BAG_NAME may not be client, environment, node or role, as these are reserved words for knife search.

--secret SECRET

: The encryption key that is used for values contained within a data bag item. If secret is not specified, Chef Infra Client looks for a secret at the path specified by the encrypted_data_bag_secret setting in the client.rb file. For encrypted data bag items, use either --secret or --secret-file, not both.

--secret-file FILE

: The path to the file that contains the encryption key.

{{< note >}}

{{% knife_common_see_all_config_options %}}

{{< /note >}}

Examples

The following examples show how to use this knife subcommand:

Create a data bag

To create a data bag named "admins", enter:

knife data bag create admins

to return:

Created data_bag[admins]

delete

Use the delete argument to delete a data bag or a data bag item from a Chef Infra 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

The following examples show how to use this knife subcommand:

Delete a data bag

knife data bag delete data_bag_name

Delete a data bag item

To delete an item named "charlie", enter:

knife data bag delete admins charlie

Type Y to confirm a deletion.

edit

{{% knife_data_bag_edit %}}

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. If secret is not specified, Chef Infra Client looks for a secret at the path specified by the encrypted_data_bag_secret setting in the client.rb file.

--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.

{{< /note >}}

{{< note >}}

{{% knife_common_see_all_config_options %}}

{{< /note >}}

Examples

The following examples show how to use this knife subcommand:

Edit a data bag

To edit the contents of a data bag, enter:

knife data bag edit dogs tibetanspaniel

where dogs is the name of the data bag and tibetanspaniel is the name of the data bag item. This will return something similar to the following in the knife editor:

{
  "name":"data_bag_item_dogs_tibetanspaniel",
  "json_class":"Chef::DataBagItem",
  "chef_type":"data_bag_item",
  "data_bag":"dogs",
  "raw_data":
    {
      "description":"small dog that likes to sit in windows",
      "id":"tibetanspaniel"
    }
}

Make the necessary changes to the key-value pairs under raw_data and save them.

Edit a data bag item

{{% knife_data_bag_edit_item %}}

from file

Use the from file argument 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 Infra 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 relative 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".

Syntax

This argument has the following syntax:

knife data bag from file DATA_BAG_NAME_or_PATH JSON_FILE

Options

This argument has the following options:

-a, --all

: 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. If secret is not specified, Chef Infra Client looks for a secret at the path specified by the encrypted_data_bag_secret setting in the client.rb file.

--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.

{{< /note >}}

{{< note >}}

{{% knife_common_see_all_config_options %}}

{{< /note >}}

Examples

The following examples show how to use this knife subcommand:

Create a data bag from a file

To create a data bag on the Chef Infra Server from a file:

knife data bag from file "path to JSON file"

Create an encrypted data bag from a 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"

Create an encrypted data bag for use with Chef Infra Client local mode

{{% knife_data_bag_from_file_create_encrypted_local_mode %}}

list

Use the list argument to view a list of data bags that are currently available on the Chef Infra Server.

Syntax

This argument has the following syntax:

knife data bag list

Options

This argument has the following options:

-w, --with-uri

: Show the corresponding URIs.

Examples

The following examples show how to use this knife subcommand:

View a list of data bags

knife data bag list

show

Use the show argument 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. If secret is not specified, Chef Infra Client looks for a secret at the path specified by the encrypted_data_bag_secret setting in the client.rb file.

--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.

{{< /note >}}

{{< note >}}

{{% knife_common_see_all_config_options %}}

{{< /note >}}

Examples

The following examples show how to use this knife subcommand:

Show a data bag

knife data bag show admins

to return something like:

charlie

Show a data bag item

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

Show a data bag, encrypted

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:

{
  "id": "mysql",
  "pass": "trywgFA6R70NO28PNhMpGhEvKBZuxouemnbnAUQsUyo=\n",
  "user": "e/p+8WJYVHY9fHcEgAAReg==\n"
}

Show a data bag, decrypted

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:

{
  "id": "mysql",
  "pass": "thesecret123",
  "user": "fred"
}

Show a data bag as JSON

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.