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"]
19 :offset => { :warning => "20", :critical => "100" }
25 :internal => { :metric => 200, :zone => "loc" },
26 :external => { :metric => 100 }
28 :search => ["openstreetmap.org"]
32 :comment => "Reboot automatically after a panic",
33 :parameters => { "kernel.panic" => "60" }
36 :comment => "Do TCP level MTU probing if we seem to have an ICMP blackhole",
38 "net.ipv4.tcp_mtu_probing" => "1",
39 "net.ipv4.tcp_base_mss" => "1024"
43 :comment => "Tune network buffers",
45 "net.core.rmem_max" => "16777216",
46 "net.core.wmem_max" => "16777216",
47 "net.ipv4.tcp_rmem" => "4096\t87380\t16777216",
48 "net.ipv4.tcp_wmem" => "4096\t65536\t16777216"
52 :comment => "Increase maximum backlog for incoming network packets",
53 :parameters => { "net.core.netdev_max_backlog" => "2500" }
55 :network_conntrack_established => {
56 :comment => "Only track established connections for four hours",
58 "net.netfilter.nf_conntrack_tcp_timeout_established" => "14400"
62 :comment => "Turn on syncookies to protect against SYN floods",
64 "net.ipv4.tcp_syncookies" => "1"
69 :cpufreq_ondemand => {
70 :comment => "Tune the ondemand CPU frequency governor",
72 "devices/system/cpu/cpufreq/ondemand/up_threshold" => "25",
73 "devices/system/cpu/cpufreq/ondemand/sampling_down_factor" => "100"