Disable reporting for Expect-CT on tile servers

[chef.git] / roles / ucl.rb

diff --git a/roles/ucl.rb b/roles/ucl.rb
index 7715e629aaaf812e555f8f510505040783b0999c..eb3dfd1cd10034b74db6d419192cb1aa64f27c09 100644 (file)
--- a/roles/ucl.rb
+++ b/roles/ucl.rb
@@ -2,11 +2,6 @@ name "ucl"
 description "Role applied to all servers at UCL"
 
 default_attributes(
-  :chef => {
-    :client => {
-      :version => "13.6.4"
-    }
-  },
   :location => "Slough, England",
   :networking => {
     :roles => {
@@ -24,6 +19,15 @@ default_attributes(
         }
       }
     }
+  },
+  :sysctl => {
+    :blackhole => {
+      :comment => "Force TCP level MTU probing because of known ICMP blackhole at UCL",
+      :parameters => {
+        "net.ipv4.tcp_mtu_probing" => "2",
+        "net.ipv4.tcp_base_mss" => "1024"
+      }
+    }
   }
 )