OCSP stapling

docs/content/https/ocsp.md

@@ -0,0 +1,71 @@
+---
+title: "Traefik OCSP Documentation"
+description: "Learn how to configure Traefik to use OCSP. Read the technical documentation."
+---
+
+# OCSP
+
+Check certificate status and perform OCSP stapling.
+{: .subtitle }
+
+## Overview
+
+### OCSP Stapling
+
+When OCSP is enabled, Traefik checks the status of every certificate in the store that provides an OCSP responder URL,
+including the default certificate, and staples the OCSP response to the TLS handshake.
+The OCSP check is performed when the certificate is loaded,
+and once every hour until it is successful at the halfway point before the update date.
+
+### Caching
+
+Traefik caches the OCSP response as long as the associated certificate is provided by the configuration.
+When a certificate is no longer provided,
+the OCSP response has a 24 hour TTL waiting to be provided again or eventually removed.
+The OCSP response is cached in memory and is not persisted between Traefik restarts.
+
+## Configuration
+
+### General
+
+Enabling OCSP is part of the [static configuration](../getting-started/configuration-overview.md#the-static-configuration).
+It can be defined by using a file (YAML or TOML) or CLI arguments:
+
+```yaml tab="File (YAML)"
+## Static configuration
+ocsp: {}
+```
+
+```toml tab="File (TOML)"
+## Static configuration
+[ocsp]
+```
+
+```bash tab="CLI"
+## Static configuration
+--ocsp=true
+```
+
+### Responder Overrides
+
+The `responderOverrides` option defines the OCSP responder URLs to use instead of the one provided by the certificate.
+This is useful when you want to use a different OCSP responder.
+
+```yaml tab="File (YAML)"
+## Static configuration
+ocsp:
+  responderOverrides:
+    foo: bar
+```
+
+```toml tab="File (TOML)"
+## Static configuration
+[ocsp]
+  [ocsp.responderOverrides]
+    foo = "bar"
+```
+
+```bash tab="CLI"
+## Static configuration
+-ocsp.responderoverrides.foo=bar
+```