2 description "Master role applied to katla"
 
  10       :comment => "RAID array mounted on /store/arrays/slow",
 
  13       :serial => "3600605b005a0609019290f178be8de77",
 
  15         "queue/scheduler" => "deadline",
 
  16         "queue/nr_requests" => "975",
 
  17         "queue/rq_affinity" => "2"
 
  21       :comment => "RAID array mounted on /store/arrays/fast",
 
  24       :serial => "3600605b005a0726019d062ae23b426fd",
 
  26         "queue/scheduler" => "deadline",
 
  27         "queue/nr_requests" => "975",
 
  28         "queue/rq_affinity" => "2"
 
  32       :comment => "First disk of RAID array mounted on /store/arrays/ssd",
 
  35       :serial => "INTEL_SSDSC2BA400G3_BTTV3141041E400HGN",
 
  37         "queue/scheduler" => "noop"
 
  41       :comment => "Second disk of RAID array mounted on /store/arrays/ssd",
 
  44       :serial => "INTEL_SSDSC2BA400G3_BTTV3141044Q400HGN",
 
  46         "queue/scheduler" => "noop"
 
  53         :interface => "bond0",
 
  56         :address => "10.0.32.40",
 
  58           :slaves => %w(eth0 eth1)
 
  66         :shared_buffers => "64GB",
 
  68         :maintenance_work_mem => "1GB",
 
  69         :effective_cache_size => "180GB"
 
  75       :comment => "Disable IPv6 auto-configuration on internal interface",
 
  77         "net.ipv6.conf.bond0.autoconf" => "0",
 
  78         "net.ipv6.conf.bond0.accept_ra" => "0"
 
  82       :comment => "Increase shared memory for postgres",
 
  84         "kernel.shmmax" => 66 * 1024 * 1024 * 1024,
 
  85         "kernel.shmall" => 66 * 1024 * 1024 * 1024 / 4096