2 description "Role applied to all tile servers"
 
   7       :pnorman => { :status => :administrator },
 
   9         :members => [:jburgess, :tomh, :pnorman]
 
  20       :threads_per_child => 20,
 
  21       :min_spare_threads => 300,
 
  22       :max_connections_per_child => 0,
 
  23       :async_request_worker_factor => 4,
 
  24       :listen_cores_buckets_ratio => 8
 
  30         :max_connections => "250",
 
  31         :shared_buffers => "16GB",
 
  33         :maintenance_work_mem => "8GB",
 
  34         :max_parallel_workers_per_gather => "0",
 
  35         :wal_level => "minimal",
 
  36         :wal_buffers => "1024kB",
 
  37         :wal_writer_delay => "500ms",
 
  38         :checkpoint_timeout => "60min",
 
  39         :commit_delay => "10000",
 
  40         :max_wal_size => "10GB",
 
  41         :max_wal_senders => "0",
 
  43         :track_activity_query_size => "16384",
 
  44         :autovacuum_vacuum_scale_factor => "0.05",
 
  45         :autovacuum_analyze_scale_factor => "0.02"
 
  50     :ct_report_uri => false
 
  54       :comment => "Increase size of connection queue",
 
  56         "net.core.somaxconn" => 10000
 
  59     :network_conntrack_time_wait => {
 
  60       :comment => "Only track completed connections for 30 seconds",
 
  62         "net.netfilter.nf_conntrack_tcp_timeout_time_wait" => "30"
 
  65     :network_conntrack_max => {
 
  66       :comment => "Increase max number of connections tracked",
 
  68         "net.netfilter.nf_conntrack_max" => "524288"
 
  71     :no_tcp_slow_start => {
 
  72       :comment => "Disable TCP slow start",
 
  74         "net.ipv4.tcp_slow_start_after_idle" => "0"
 
  78       :comment => "Use TCP BBR Congestion Control",
 
  80         "net.core.default_qdisc" => "fq",
 
  81         "net.ipv4.tcp_congestion_control" => "bbr"
 
  87       :style_file => "/srv/tile.openstreetmap.org/styles/default/openstreetmap-carto.style",
 
  88       :tag_transform_script => "/srv/tile.openstreetmap.org/styles/default/openstreetmap-carto.lua",
 
  89       :external_data_script => "/srv/tile.openstreetmap.org/styles/default/scripts/get-external-data.py -c /srv/tile.openstreetmap.org/styles/default/external-data.yml",
 
  90       :external_data_tables => %w[
 
  93         ne_110m_admin_0_boundary_lines_land
 
  94         simplified_water_polygons
 
 100         :repository => "https://github.com/gravitystorm/openstreetmap-carto.git",
 
 101         :revision => "v5.9.0",
 
 102         :fonts_script => "/srv/tile.openstreetmap.org/styles/default/scripts/get-fonts.sh",
 
 103         :functions_script => "/srv/tile.openstreetmap.org/styles/default/functions.sql",