2 description "Base role applied to all servers"
7 :grant => { :status => :administrator },
8 :tomh => { :status => :administrator },
9 :matt => { :status => :administrator },
10 :jburgess => { :status => :administrator }
14 :sources => ["openstreetmap"]
18 :internal => { :metric => 200, :zone => "loc" },
19 :external => { :metric => 100 }
21 :search => ["openstreetmap.org"]
25 :comment => "Reboot automatically after a panic",
26 :parameters => { "kernel.panic" => "60" }
29 :comment => "Do TCP level MTU probing if we seem to have an ICMP blackhole",
30 :parameters => { "net.ipv4.tcp_mtu_probing" => "1" }
33 :comment => "Tune network buffers",
35 "net.core.rmem_max" => "16777216",
36 "net.core.wmem_max" => "16777216",
37 "net.ipv4.tcp_rmem" => "4096\t87380\t16777216",
38 "net.ipv4.tcp_wmem" => "4096\t65536\t16777216"
42 :comment => "Increase maximum backlog for incoming network packets",
43 :parameters => { "net.core.netdev_max_backlog" => "2500" }
45 :network_conntrack_established => {
46 :comment => "Only track established connections for four hours",
48 "net.netfilter.nf_conntrack_tcp_timeout_established" => "14400"
52 :comment => "Turn on syncookies to protect against SYN floods",
54 "net.ipv4.tcp_syncookies" => "1"
59 :cpufreq_ondemand => {
60 :comment => "Tune the ondemand CPU frequency governor",
62 "devices/system/cpu/cpufreq/ondemand/up_threshold" => "25",
63 "devices/system/cpu/cpufreq/ondemand/sampling_down_factor" => "100"