Unseal Vault

Preamble

The Vault service always starts in a sealed state. Unsealing is the process of obtaining the master key necessary to read the decryption key that decrypts the data stored within. Prior to unsealing, therefore, Vault cannot be accessed by the cloud.

Important

Unsealing involves the input of special unseal keys, the number of which depends on how Vault was originally initialised. Without these keys Vault cannot be unsealed.

Procedure

Note

Ensure that the vault snap is installed on your Juju client host. You will need it to manage the Vault that is deployed in your cloud.

The output to juju status vault should show that Vault is sealed:

Unit      Workload  Agent  Machine  Public address  Ports     Message
vault/0*  blocked   idle   3/lxd/3  10.0.0.204      8200/tcp  Unit is sealed

Unseal each vault unit.

Note

If the Vault API is encrypted see cloud operation Configure TLS for the Vault API.

For a single unit requiring three keys (vault/0 with IP address 10.0.0.204):

export VAULT_ADDR="http://10.0.0.204:8200"

vault operator unseal
vault operator unseal
vault operator unseal

You will be prompted for the unseal keys. The information will not be echoed back to the screen nor captured in the shell’s history.

The output to juju status vault should eventually contain:

Unit      Workload  Agent  Machine  Public address  Ports     Message
vault/0*  active    idle   0/lxd/0  10.0.0.204      8200/tcp  Unit is ready (active: true, mlock: disabled)

Note

It can take a few minutes for the “ready” status to appear. To expedite, force a status update: juju run -u vault/0 hooks/update-status.

For multiple vault units, repeat the procedure by using a different value each time for VAULT_ADDR. For a three-member Vault cluster the output should look similar to:

Unit                  Workload  Agent  Machine  Public address  Ports     Message
vault/0               active    idle   0/lxd/0  10.0.0.204      8200/tcp  Unit is ready (active: true, mlock: disabled)
  vault-hacluster/1   active    idle            10.0.0.204                Unit is ready and clustered
vault/1*              active    idle   1/lxd/0  10.0.0.205      8200/tcp  Unit is ready (active: false, mlock: disabled)
  vault-hacluster/0*  active    idle            10.0.0.205                Unit is ready and clustered
vault/2               active    idle   2/lxd/0  10.0.0.206      8200/tcp  Unit is ready (active: false, mlock: disabled)
  vault-hacluster/2   active    idle            10.0.0.206                Unit is ready and clustered