124 lines
4.4 KiB
Markdown
124 lines
4.4 KiB
Markdown
---
|
|
layout: "docs"
|
|
page_title: "Vault Transit - Seals - Configuration"
|
|
sidebar_title: "Vault Transit"
|
|
sidebar_current: "docs-configuration-seal-transit"
|
|
description: |-
|
|
The Transit seal configures Vault to use Vault's Transit Secret Engine as the
|
|
autoseal mechanism.
|
|
---
|
|
|
|
# `transit` Seal
|
|
|
|
The Transit seal configures Vault to use Vault's Transit Secret Engine as the
|
|
autoseal mechanism.
|
|
The Transit seal is activated by one of the following:
|
|
|
|
* The presence of a `seal "transit"` block in Vault's configuration file
|
|
* The presence of the environment variable `VAULT_SEAL_TYPE` set to `transit`.
|
|
|
|
## `transit` Example
|
|
|
|
This example shows configuring Transit seal through the Vault configuration file
|
|
by providing all the required values:
|
|
|
|
```hcl
|
|
seal "transit" {
|
|
address = "https://vault:8200"
|
|
token = "s.Qf1s5zigZ4OX6akYjQXJC1jY"
|
|
disable_renewal = "false"
|
|
|
|
// Key configuration
|
|
key_name = "transit_key_name"
|
|
mount_path = "transit/"
|
|
namespace = "ns1/"
|
|
|
|
// TLS Configuration
|
|
tls_ca_cert = "/etc/vault/ca_cert.pem"
|
|
tls_client_cert = "/etc/vault/client_cert.pem"
|
|
tls_client_key = "/etc/vault/ca_cert.pem"
|
|
tls_server_name = "vault"
|
|
tls_skip_verify = "false"
|
|
}
|
|
```
|
|
|
|
## `transit` Parameters
|
|
|
|
These parameters apply to the `seal` stanza in the Vault configuration file:
|
|
|
|
- `address` `(string: <required>)`: The full address to the Vault cluster.
|
|
This may also be specified by the `VAULT_ADDR` environment variable.
|
|
|
|
- `token` `(string: <required>)`: The Vault token to use. This may also be
|
|
specified by the `VAULT_TOKEN` environment variable.
|
|
|
|
- `key_name` `(string: <required>)`: The transit key to use for encryption and
|
|
decryption. This may also be supplied using the `VAULT_TRANSIT_SEAL_KEY_NAME`
|
|
environment variable.
|
|
|
|
- `mount_path` `(string: <required>)`: The mount path to the transit secret engine.
|
|
This may also be supplied using the `VAULT_TRANSIT_SEAL_MOUNT_PATH` environment
|
|
variable.
|
|
|
|
- `namespace` `(string: "")`: The namespace path to the transit secret engine.
|
|
This may also be supplied using the `VAULT_NAMESPACE` environment variable.
|
|
|
|
- `disable_renewal` `(string: "false")`: Disables the automatic renewal of the token
|
|
in case the lifecycle of the token is managed with some other mechanism outside of
|
|
Vault, such as Vault Agent. This may also be specified using the
|
|
`VAULT_TRANSIT_SEAL_DISABLE_RENEWAL` environment variable.
|
|
|
|
- `tls_ca_cert` `(string: "")`: Specifies the path to the CA certificate file used
|
|
for communication with the Vault server. This may also be specified using the
|
|
`VAULT_CA_CERT` environment variable.
|
|
|
|
- `tls_client_cert` `(string: "")`: Specifies the path to the client certificate
|
|
for communication with the Vault server. This may also be specified using the
|
|
`VAULT_CLIENT_CERT` environment variable.
|
|
|
|
- `tls_client_key` `(string: "")`: Specifies the path to the private key for
|
|
communication with the Vault server. This may also be specified using the
|
|
`VAULT_CLIENT_KEY` environment variable.
|
|
|
|
- `tls_server_name` `(string: "")`: Name to use as the SNI host when connecting
|
|
to the Vault server via TLS. This may also be specified via the
|
|
`VAULT_TLS_SERVER_NAME` environment variable.
|
|
|
|
- `tls_skip_verify` `(bool: "false")`: Disable verification of TLS certificates.
|
|
Using this option is highly discouraged and decreases the security of data
|
|
transmissions to and from the Vault server. This may also be specified using the
|
|
`VAULT_SKIP_VERIFY` environment variable.
|
|
|
|
## Authentication
|
|
|
|
Authentication-related values must be provided, either as environment
|
|
variables or as configuration parameters.
|
|
|
|
~> **Note:** Although the configuration file allows you to pass in
|
|
`VAULT_TOKEN` as part of the seal's parameters, it is *strongly* recommended
|
|
to set these values via environment variables.
|
|
|
|
The Vault token used to authenticate needs the following permissions on the
|
|
transit key:
|
|
|
|
```hcl
|
|
path "<mount path>/encrypt/<key name>" {
|
|
capabilities = ["update"]
|
|
}
|
|
|
|
path "<mount path>/decrypt/<key name>" {
|
|
capabilities = ["update"]
|
|
}
|
|
```
|
|
|
|
## Key Rotation
|
|
|
|
This seal supports key rotation using the Transit Secret Engine's key rotation endpoints. See
|
|
[doc](/api/secret/transit/index.html#rotate-key). Old keys must not be disabled or deleted and are
|
|
used to decrypt older data.
|
|
|
|
## Learn
|
|
|
|
Refer to the [Auto-unseal using Transit Secrets Engine](https://learn.hashicorp.com/vault/operations/autounseal-transit)
|
|
guide for a step-by-step tutorial.
|