8a57b90b47
* adding transit seal docs * add missing backtick
120 lines
4.3 KiB
Markdown
120 lines
4.3 KiB
Markdown
---
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layout: "docs"
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page_title: "Vault Transit - Seals - Configuration"
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sidebar_title: "Vault Transit"
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sidebar_current: "docs-configuration-seal-transit"
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description: |-
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The Transit seal configures Vault to use Vault's Transit Secret Engine as the
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autoseal mechanism.
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---
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# `transit` Seal
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The Transit seal configures Vault to use Vault's Transit Secret Engine as the
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autoseal mechanism.
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The Transit seal is activated by one of the following:
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* The presence of a `seal "transit"` block in Vault's configuration file
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* The presence of the environment variable `VAULT_SEAL_TYPE` set to `transit`.
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## `transit` Example
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This example shows configuring Transit seal through the Vault configuration file
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by providing all the required values:
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```hcl
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seal "transit" {
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address = "https://vault:8200"
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token = "s.Qf1s5zigZ4OX6akYjQXJC1jY"
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disable_renewal = "false"
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// Key configuration
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key_name = "transit_key_name"
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mount_path = "transit/"
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namespace = "ns1/"
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// TLS Configuration
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tls_ca_cert = "/etc/vault/ca_cert.pem"
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tls_client_cert = "/etc/vault/client_cert.pem"
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tls_client_key = "/etc/vault/ca_cert.pem"
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tls_server_name = "vault"
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tls_skip_verify = "false"
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}
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```
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## `tranist` Parameters
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These parameters apply to the `seal` stanza in the Vault configuration file:
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- `address` `(string: <required>)`: The full address to the Vault cluster.
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This may also be specified by the `VAULT_ADDR` environment variable.
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- `token` `(string: <required>)`: The Vault token to use. This may also be
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specified by the `VAULT_TOKEN` environment variable.
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- `key_name` `(string: <required>)`: The transit key to use for encryption and
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decryption. This may also be supplied using the `VAULT_TRANSIT_SEAL_KEY_NAME`
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environment variable.
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- `mount_path` `(string: <required>)`: The mount path to the transit secret engine.
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This may also be supplied using the `VAULT_TRANSIT_SEAL_MOUNT_PATH` environment
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variable.
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- `namespace` `(string: "")`: The namespace path to the transit secret engine.
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This may also be supplied using the `VAULT_NAMESPACE` environment variable.
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- `disable_renewal` `(string: "false")`: Disables the automatic renewal of the token
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in case the lifecyle of the token is managed with some other mechanism outside of
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Vault, such as Vault Agent. This may also be specfied using the
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`VAULT_TRANSIT_SEAL_DISABLE_RENEWAL` environment variable.
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- `tls_ca_cert` `(string: "")`: Specifies the path to the CA certificate file used
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for communication with the Vault server. This may also be specified using the
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`VAULT_CA_CERT` environment variable.
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- `tls_client_cert` `(string: "")`: Specifies the path to the client certificate
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for communication with the Vault server. This may also be specified using the
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`VAULT_CLIENT_CERT` environment variable.
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- `tls_client_key` `(string: "")`: Specifies the path to the private key for
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communication with the Vault server. This may also be specified using the
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`VAULT_CLIENT_KEY` environment variable.
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- `tls_server_name` `(string: "")`: Name to use as the SNI host when connecting
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to the Vault server via TLS. This may also be specified via the
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`VAULT_TLS_SERVER_NAME` environment variable.
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- `tls_skip_verify` `(bool: "false")`: Disable verification of TLS certificates.
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Using this option is highly discouraged and decreases the security of data
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transmissions to and from the Vault server. This may also be specified using the
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`VAULT_TLS_SKIP_VERIFY` environment variable.
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## Authentication
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Authentication-related values must be provided, either as environment
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variables or as configuration parameters.
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~> **Note:** Although the configuration file allows you to pass in
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`VAULT_TOKEN` as part of the seal's parameters, it is *strongly* recommended
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to set these values via environment variables.
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The Vault token used to authenticate needs the following permissions on the
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transit key:
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```hcl
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path "<mount path>/encrypt/<key name>" {
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capabilities = ["write"]
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}
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path "<mount path>/decrypt/<key name>" {
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capabilities = ["write"]
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}
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```
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## Key Rotation
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This seal supports key rotation using the Transit Secret Engine's key rotation endpoints. See
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[doc](/api/secret/transit/index.html#rotate-key). Old keys must not be disabled or deleted and are
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used to decrypt older data.
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