Linux sysctl kernel parameters
diff --git a/README.rst b/README.rst
index 4b06443..cbcaf8d 100644
--- a/README.rst
+++ b/README.rst
@@ -161,6 +161,18 @@
           headers: true
           version: 4.2.0-22
 
+Systcl kernel parameters
+
+.. code-block:: yaml
+
+    linux:
+      system:
+        kernel:
+          sysctl:
+            net.ipv4.tcp_keepalive_intvl: 3
+            net.ipv4.tcp_keepalive_time: 30
+            net.ipv4.tcp_keepalive_probes: 8
+
 Repositories
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