79 lines
2.1 KiB
Plaintext
79 lines
2.1 KiB
Plaintext
---
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layout: docs
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page_title: Workload Identity
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description: Learn about Nomad's workload identity feature
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---
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# Workload Identity
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When an [allocation][] is accepted by the [plan applier][], the leader generates
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a Workload Identity for each task in the allocation. This workload identity is a
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[JSON Web Token (JWT)][] that has been signed by the leader's keyring. The
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workload identity includes the following identity claims:
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```json
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{
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"nomad_namespace": "default",
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"nomad_job_id": "example",
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"nomad_allocation_id": "5c6328f7-48c5-4d03-bada-91ef2e904d0d",
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"nomad_task": "web"
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}
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```
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# Workload Associated ACL Policies
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You can associate additional ACL policies with workload identities by passing
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the `-job`, `-group`, and `-task` flags to `nomad acl policy apply`. When Nomad
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resolves a workload identity claim, it will automatically include policies that
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match. If no matching policies exist, the workload identity does not have any
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additional capabilities.
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For example, to allow a workload access to secrets from the namespace "shared",
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you can create the following policy file:
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```hcl
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namespace "shared" {
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variables {
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path "*" {
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capabilities = ["read"]
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}
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}
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}
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```
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You can then apply this policy to a specific task:
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```shell-session
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nomad acl policy apply \
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-namespace default -job example -group cache -task redis \
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redis-policy ./policy.hcl
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```
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You can also apply this policy to all tasks in the group by omitting the `-task`
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flag:
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```shell-session
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nomad acl policy apply \
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-namespace default -job example -group cache \
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redis-policy ./policy.hcl
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```
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And you can apply this policy to all groups in the job by omitting both the
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`-group` and `-task` flag:
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```shell-session
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nomad acl policy apply \
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-namespace default -job example \
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redis-policy ./policy.hcl
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```
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## Using Workload Identity
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In Nomad 1.4.0 the workload identity is used only for `template`
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access to [Variables][] and not exposed outside of Nomad.
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[allocation]: /docs/concepts/architecture#allocation
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[plan applier]: /docs/concepts/scheduling/scheduling
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[Variables]: /docs/concepts/variables
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[JSON Web Token (JWT)]: https://datatracker.ietf.org/doc/html/rfc7519
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