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30 lines
1.8 KiB
Plaintext
30 lines
1.8 KiB
Plaintext
---
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layout: docs
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page_title: Use Kubernetes persistent cache - Vault Agent
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description: >-
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Configure Vault Agent to use Kubernetes for persistent cache
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---
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> [!IMPORTANT]
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> **Documentation Update:** Product documentation, which were located in this repository under `/website`, are now located in [`hashicorp/web-unified-docs`](https://github.com/hashicorp/web-unified-docs), colocated with all other product documentation. Contributions to this content should be done in the `web-unified-docs` repo, and not this one. Changes made to `/website` content in this repo will not be reflected on the developer.hashicorp.com website.
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# Use Kubernetes persistent cache
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When `kubernetes` is configured for the persistent cache type, Vault Agent will optimize the
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persistent cache specifically for Kubernetes. This type of persistent cache requires a Kubernetes
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service account token. The service account token is used during encryption and decryption of the
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persistent cache as an additional integrity check.
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The Vault Agent persistent cache file in Kubernetes should only be used for handing off Vault tokens
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and leases between initialization and sidecar Vault Agent containers. This cache file should be shared
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using a memory volume between the Vault Agent containers.
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If the Vault Agent Injector for Kubernetes is being used, the persistent cache is automatically configured
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and used if the annotation [`vault.hashicorp.com/agent-cache-enable: true`](/vault/docs/platform/k8s/injector/annotations#vault-hashicorp-com-agent-cache-enable) is set.
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## Configuration
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- `service_account_token_file` `(string: optional)` - When type is set to `kubernetes`,
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this configures the path on disk where the Kubernetes service account token can be found.
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Defaults to `/var/run/secrets/kubernetes.io/serviceaccount/token`.
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