2 description "Master role applied to katla"
 
   7       :comment => "RAID array mounted on /store/arrays/slow",
 
  10       :serial => "3600605b005a0609019290f178be8de77",
 
  12         "queue/scheduler" => "deadline",
 
  13         "queue/nr_requests" => "975",
 
  14         "queue/rq_affinity" => "2"
 
  18       :comment => "RAID array mounted on /store/arrays/fast",
 
  21       :serial => "3600605b005a0726019d062ae23b426fd",
 
  23         "queue/scheduler" => "deadline",
 
  24         "queue/nr_requests" => "975",
 
  25         "queue/rq_affinity" => "2"
 
  29       :comment => "First disk of RAID array mounted on /store/arrays/ssd",
 
  32       :serial => "INTEL_SSDSC2BA400G3_BTTV3141041E400HGN",
 
  34         "queue/scheduler" => "noop"
 
  38       :comment => "Second disk of RAID array mounted on /store/arrays/ssd",
 
  41       :serial => "INTEL_SSDSC2BA400G3_BTTV3141044Q400HGN",
 
  43         "queue/scheduler" => "noop"
 
  50         :interface => "bond0",
 
  53         :address => "10.0.32.40",
 
  55           :slaves => %w[eth0 eth1]
 
  63         :shared_buffers => "64GB",
 
  65         :maintenance_work_mem => "1GB",
 
  66         :effective_cache_size => "180GB"
 
  72       :comment => "Increase shared memory for postgres",
 
  74         "kernel.shmmax" => 66 * 1024 * 1024 * 1024,
 
  75         "kernel.shmall" => 66 * 1024 * 1024 * 1024 / 4096