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Co-authored-by: Sarah Chavis <62406755+schavis@users.noreply.github.com>

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Co-authored-by: Sarah Chavis <62406755+schavis@users.noreply.github.com>
2024-12-18 15:37:38 -08:00

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---
layout: docs
page_title: Nomad secrets engine
description: >-
Dynamically generate Nomad tokens with the Nomad secrets engine plugin.
---
# Nomad secrets engine
@include 'x509-sha1-deprecation.mdx'
Nomad is a simple, flexible scheduler and workload orchestrator. The Nomad secrets engine for Vault generates [Nomad](https://www.nomadproject.io/)
ACL tokens dynamically based on pre-existing Nomad ACL policies.
This page will show a quick start for this secrets engine. For detailed documentation
on every path, use `vault path-help` after mounting the secrets engine.
~> **Version information** ACLs are only available on Nomad 0.7.0 and above.
## Quick start
The first step to using the Vault secrets engine is to enable it.
```shell-session
$ vault secrets enable nomad
Successfully mounted 'nomad' at 'nomad'!
```
Optionally, we can configure the lease settings for credentials generated
by Vault. This is done by writing to the `config/lease` key:
```shell-session
$ vault write nomad/config/lease ttl=3600 max_ttl=86400
Success! Data written to: nomad/config/lease
```
For a quick start, you can use the SecretID token provided by the [Nomad ACL bootstrap
process](/nomad/tutorials/access-control#generate-the-initial-token), although this
is discouraged for production deployments.
```shell-session
$ nomad acl bootstrap
Accessor ID = 95a0ee55-eaa6-2c0a-a900-ed94c156754e
Secret ID = c25b6ca0-ea4e-000f-807a-fd03fcab6e3c
Name = Bootstrap Token
Type = management
Global = true
Policies = n/a
Create Time = 2017-09-20 19:40:36.527512364 +0000 UTC
Create Index = 7
Modify Index = 7
```
The suggested pattern is to generate a token specifically for Vault, following the
[Nomad ACL guide](/nomad/tutorials/access-control)
Next, we must configure Vault to know how to contact Nomad.
This is done by writing the access information:
```shell-session
$ vault write nomad/config/access \
address=http://127.0.0.1:4646 \
token=adf4238a-882b-9ddc-4a9d-5b6758e4159e
Success! Data written to: nomad/config/access
```
In this case, we've configured Vault to connect to Nomad
on the default port with the loopback address. We've also provided
an ACL token to use with the `token` parameter. Vault must have a management
type token so that it can create and revoke ACL tokens.
The next step is to configure a role. A role is a logical name that maps
to a set of policy names used to generate those credentials. For example, let's create
a "monitoring" role that maps to a "readonly" policy:
```shell-session
$ vault write nomad/role/monitoring policies=readonly
Success! Data written to: nomad/role/monitoring
```
The secrets engine expects either a single or a comma separated list of policy names.
To generate a new Nomad ACL token, we simply read from that role:
```shell-session
$ vault read nomad/creds/monitoring
Key Value
--- -----
lease_id nomad/creds/monitoring/78ec3ef3-c806-1022-4aa8-1dbae39c760c
lease_duration 768h0m0s
lease_renewable true
accessor_id a715994d-f5fd-1194-73df-ae9dad616307
secret_id b31fb56c-0936-5428-8c5f-ed010431aba9
```
Here we can see that Vault has generated a new Nomad ACL token for us.
We can test this token out, by reading it in Nomad (by it's accessor):
```shell-session
$ nomad acl token info a715994d-f5fd-1194-73df-ae9dad616307
Accessor ID = a715994d-f5fd-1194-73df-ae9dad616307
Secret ID = b31fb56c-0936-5428-8c5f-ed010431aba9
Name = Vault example root 1505945527022465593
Type = client
Global = false
Policies = [readonly]
Create Time = 2017-09-20 22:12:07.023455379 +0000 UTC
Create Index = 138
Modify Index = 138
```
## Tutorial
Refer to [Generate Nomad Tokens with HashiCorp
Vault](/nomad/tutorials/integrate-vault/vault-nomad-secrets) for a
step-by-step tutorial.
## API
The Nomad secrets engine has a full HTTP API. Please see the
[Nomad Secrets Engine API](/vault/api-docs/secret/nomad) for more
details.