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@raymonstah
raymonstah committed Mar 29, 2023
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5 changes: 3 additions & 2 deletions website/content/docs/platform/aws/lambda-extension.mdx
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Expand Up @@ -169,16 +169,17 @@ as well as some additional variables to configure auth, which secret(s) to read
where to write secrets.

| Environment variable | Description | Required | Example value |
| --------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | --------------------------- |
|-----------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------|-----------------------------|
| `VLE_VAULT_ADDR` | Vault address to connect to. Takes precedence over `VAULT_ADDR` so that clients of the proxy server can be configured using the standard `VAULT_ADDR` | No | `https://x.x.x.x:8200` |
| `VAULT_ADDR` | Vault address to connect to if `VLE_VAULT_ADDR` is not set. Required if `VLE_VAULT_ADDR` is not set | No | `https://x.x.x.x:8200` |
| `VAULT_AUTH_PROVIDER` | Name of the configured AWS IAM auth route on Vault | Yes | `aws` |
| `VAULT_AUTH_ROLE` | Vault role to authenticate as | Yes | `lambda-app` |
| `VAULT_IAM_SERVER_ID` | Value to pass to the Vault server via the [`X-Vault-AWS-IAM-Server-ID` HTTP Header for AWS Authentication](/vault/api-docs/auth/aws#iam_server_id_header_value) | No | `vault.example.com` |
| `VAULT_IAM_SERVER_ID` | Value to pass to the Vault server via the [`X-Vault-AWS-IAM-Server-ID` HTTP Header for AWS Authentication](/vault/api-docs/auth/aws#iam_server_id_header_value) | No | `vault.example.com` |
| `VAULT_SECRET_PATH` | Secret path to read, written to `/tmp/vault/secret.json` unless `VAULT_SECRET_FILE` is specified | No | `database/creds/lambda-app` |
| `VAULT_SECRET_FILE` | Path to write the JSON response for `VAULT_SECRET_PATH` | No | `/tmp/db.json` |
| `VAULT_SECRET_PATH_FOO` | Additional secret path to read, where FOO can be any name, as long as a matching `VAULT_SECRET_FILE_FOO` is specified | No | `secret/lambda-app/token` |
| `VAULT_SECRET_FILE_FOO` | Must exist for any correspondingly named `VAULT_SECRET_PATH_FOO`. Name has no further effect beyond matching to the correct path variable | No | `/tmp/token` |
| `VAULT_RUN_MODE` | Available options are `default`, `proxy`, and `file`. Proxy mode makes requests to the extension's local proxy server. File mode configures the extension to read and write secrets to disk. Default mode uses both file and proxy mode. The default is `default`. | No | `default` |
| `VAULT_TOKEN_EXPIRY_GRACE_PERIOD` | Period at the end of the proxy server's auth token TTL where it will consider the token expired and attempt to re-authenticate to Vault. Must have a unit and be parseable by `time.Duration`. Defaults to 10s. | No | `1m` |
| `VAULT_STS_ENDPOINT_REGION` | The region of the STS regional endpoint to authenticate with. If the AWS IAM auth mount specified uses a regional STS endpoint, then this needs to match the region of that endpoint. Defaults to using the global endpoint, or the region the Lambda resides in if `AWS_STS_REGIONAL_ENDPOINTS` is set to `regional` | No | `eu-west-1` |

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