X-Git-Url: https://git.openstreetmap.org./chef.git/blobdiff_plain/21958591555b0b80370e944e3128ac5d533c281d..29e07b49f54063b73c24ec645f2cda9035846326:/roles/base.rb

diff --git a/roles/base.rb b/roles/base.rb
index 529d23ba4..cad8821f7 100644
--- a/roles/base.rb
+++ b/roles/base.rb
@@ -13,6 +13,13 @@ default_attributes(
   :apt => {
     :sources => ["openstreetmap"]
   },
+  :munin => {
+    :plugins => {
+      :chrony => {
+        :systime => { :warning => "100", :critical => "250" }
+      }
+    }
+  },
   :networking => {
     :roles => {
       :internal => { :metric => 200, :zone => "loc" },
@@ -27,7 +34,10 @@ default_attributes(
     },
     :blackhole => {
       :comment => "Do TCP level MTU probing if we seem to have an ICMP blackhole",
-      :parameters => { "net.ipv4.tcp_mtu_probing" => "1" }
+      :parameters => {
+        "net.ipv4.tcp_mtu_probing" => "1",
+        "net.ipv4.tcp_base_mss" => "1024"
+      }
     },
     :network_buffers => {
       :comment => "Tune network buffers",
@@ -35,12 +45,16 @@ default_attributes(
         "net.core.rmem_max" => "16777216",
         "net.core.wmem_max" => "16777216",
         "net.ipv4.tcp_rmem" => "4096\t87380\t16777216",
-        "net.ipv4.tcp_wmem" => "4096\t65536\t16777216"
+        "net.ipv4.tcp_wmem" => "4096\t65536\t16777216",
+        "net.ipv4.udp_mem" => "3145728\t4194304\t16777216"
       }
     },
     :network_backlog => {
       :comment => "Increase maximum backlog for incoming network packets",
-      :parameters => { "net.core.netdev_max_backlog" => "2500" }
+      :parameters => {
+        "net.core.netdev_max_backlog" => "2500",
+        "net.core.netdev_budget" => "600"
+      }
     },
     :network_conntrack_established => {
       :comment => "Only track established connections for four hours",
@@ -53,14 +67,18 @@ default_attributes(
       :parameters => {
         "net.ipv4.tcp_syncookies" => "1"
       }
-    }
-  },
-  :sysfs => {
-    :cpufreq_ondemand => {
-      :comment => "Tune the ondemand CPU frequency governor",
+    },
+    :default_qdisc => {
+      :comment => "Use fq as the default queuing discipline",
+      :parameters => {
+        "net.core.default_qdisc" => "fq"
+      }
+    },
+    :tune_cpu_scheduler => {
+      :comment => "Tune CPU scheduler for server scheduling",
       :parameters => {
-        "devices/system/cpu/cpufreq/ondemand/up_threshold" => "25",
-        "devices/system/cpu/cpufreq/ondemand/sampling_down_factor" => "100"
+        "kernel.sched_migration_cost_ns" => 50000000,
+        "kernel.sched_autogroup_enabled" => 0
       }
     }
   }