From: Grant Slater <git@firefishy.com>
Date: Wed, 1 Jun 2016 22:59:55 +0000 (+0100)
Subject: imagery: sysctl to enable TFO on socket listen
X-Git-Url: https://git.openstreetmap.org./chef.git/commitdiff_plain/7117b830c7c0069ff9591147f52ce15c1bf2c79a

imagery: sysctl to enable TFO on socket listen
---

diff --git a/roles/imagery.rb b/roles/imagery.rb
index ba3009852..16195af6f 100644
--- a/roles/imagery.rb
+++ b/roles/imagery.rb
@@ -27,6 +27,12 @@ default_attributes(
         "kernel.sched_min_granularity_ns" => 10000000,
         "kernel.sched_wakeup_granularity_ns" => 15000000
       }
+    },
+    :kernel_tfo_listen_enable => {
+      :comment => "Enable TCP Fast Open for listening sockets",
+      :parameters => {
+        "net.ipv4.tcp_fastopen" => 3
+      }
     }
   },
   :nginx => {