KV secrets engine - version 1

The kv secrets engine is used to store arbitrary secrets within the configured physical storage for Vault.

Writing to a key in the kv backend will replace the old value; sub-fields are not merged together.

Key names must always be strings. If you write non-string values directly via the CLI, they will be converted into strings. However, you can preserve non-string values by writing the key/value pairs to Vault from a JSON file or using the HTTP API.

This secrets engine honors the distinction between the create and update capabilities inside ACL policies.

Setup

To enable a version 1 kv store:

$ vault secrets enable -version=1 kv

Usage

After the secrets engine is configured and a user/machine has a Vault token with the proper permission, it can generate credentials. The kv secrets engine allows for writing keys with arbitrary values.

1. Write arbitrary data:

   $ vault kv put kv/my-secret my-value=s3cr3tSuccess! Data written to: kv/my-secret

2. Read arbitrary data:

   $ vault kv get kv/my-secretKey                 Value---                 -----my-value            s3cr3t

3. List the keys:

   $ vault kv list kv/Keys----my-secret

4. Delete a key:

   $ vault kv delete kv/my-secretSuccess! Data deleted (if it existed) at: kv/my-secret

You can also use Vault's password policy feature to generate arbitrary values.

1. Write a password policy:

   $ vault write sys/policies/password/example policy=-<<EOF   length=20   rule "charset" {    charset = "abcdefghij0123456789"    min-chars = 1  }   rule "charset" {    charset = "!@#$%^&*STUVWXYZ"    min-chars = 1  } EOF

2. Write data using the example policy:

   $ vault kv put kv/my-generated-secret \    password=$(vault read -field password sys/policies/password/example/generate)

3. Read the generated data:

   $ vault kv get kv/my-generated-secret====== Data ======Key         Value---         -----password    ^dajd609Xf8Zhac$dW24

TTLs

Unlike other secrets engines, the KV secrets engine does not enforce TTLs for expiration. Instead, the lease_duration is a hint for how often consumers should check back for a new value.

If provided a key of ttl, the KV secrets engine will utilize this value as the lease duration:

$ vault kv put kv/my-secret ttl=30m my-value=s3cr3tSuccess! Data written to: kv/my-secret

Even with a ttl set, the secrets engine never removes data on its own. The ttl key is merely advisory.

When reading a value with a ttl, both the ttl key and the refresh interval will reflect the value:

$ vault kv get kv/my-secretKey                 Value---                 -----my-value            s3cr3tttl                 30m

API

The KV secrets engine has a full HTTP API. Please see the KV secrets engine API for more details.