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Docs updates about redirection and metrics (#24445)
* docs updates * remove comma
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@@ -187,6 +187,11 @@ These `telemetry` parameters apply to
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The `/v1/sys/metrics` endpoint is only accessible on active nodes
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and automatically disabled on standby nodes. You can enable the `/v1/sys/metrics`
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endpoint on standby nodes by [enabling unauthenticated metrics access][telemetry-tcp].
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Standby nodes will never forward a request to `/v1/sys/metrics` to the active
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node. If unauthenticated metrics access is enabled, the standby node will
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respond with its own metrics. If unauthenticated metrics access is not enabled,
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then a standby node will attempt to service the request but fail and then
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redirect the request to the active node.
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Querying `/v1/sys/metrics` with one of the following headers:
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@@ -21,6 +21,8 @@ that do not modify Vault's storage.
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Performance Standbys require the request forwarding method described in the [HA
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Server-to-Server](/vault/docs/concepts/ha#server-to-server-communication) docs.
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Unlike regular standby nodes, performance standbys will **not** respect the
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`X-Vault-No-Request-Forwarding` header.
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A performance standby will connect to the active node over the existing request
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forwarding connection. If selected by the active node to be promoted to a
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