anchor.diff:  merges |0b
   |`merges.total_time` |`mtt`, `mergesTotalTime` |No |Time spent merging
   documents |0s
  -|`percolate.current` |`pc`, `percolateCurrent` |No |Number of current
  -percolations |0
  -|`percolate.memory_size` |`pm`, `percolateMemory` |No |Memory used by
  -current percolations |0b
  -|`percolate.queries` |`pq`, `percolateQueries` |No |Number of
  -registered percolation queries |0
  -|`percolate.time` |`pti`, `percolateTime` |No |Time spent
  -percolating |0s
  -|`percolate.total` |`pto`, `percolateTotal` |No |Total percolations |0
   |`refresh.total` |`rto`, `refreshTotal` |No |Number of refreshes |16
   |`refresh.time` |`rti`, `refreshTime` |No |Time spent in refreshes |91ms
   |`script.compilations` |`scrcc`, `scriptCompilations` |No |Total script compilations |17
  
positive.code: descriptors percentage |1
  |`file_desc.max` |`fdm`, `fileDescriptorMax` |No |Maximum number of file
  descriptors |1024
  |`load` |`l` |No |Most recent load average |0.22
  |`cpu` | |No |Recent system CPU usage as percent |12
  |`uptime` |`u` |No |Node uptime |17.3m
  |`node.role` |`r`, `role`, `nodeRole` |Yes |Master eligible node (m);
  Data node (d); Ingest node (i); Coordinating node only (-) |mdi
  |`master` |`m` |Yes |Elected master (*); Not elected master (-) |*
  |`name` |`n` |Yes |Node name |Venom
  |`completion.size` |`cs`, `completionSize` |No |Size of completion |0b
  |`fielddata.memory_size` |`fm`, `fielddataMemory` |No |Used fielddata
  cache memory |0b
  
negative.code: 
  The `nodes` command shows the cluster topology.
  
  [source,sh]
  --------------------------------------------------
  % GET /_cat/nodes
  192.168.56.30 9 78 22 1.80 2.05 2.51 mdi * bGG90GE
  192.168.56.10 6 75 14 1.24 2.45 1.37 md  - I8hydUG
  192.168.56.20 5 71 12 1.07 1.05 1.11 di  - H5dfFeA
  --------------------------------------------------
  
  The first few columns tell you where your nodes live and give
  a picture of your heap, memory, cpu and load.
  
  [source,sh]
  --------------------------------------------------
  ip            heap.percent ram.percent cpu load_1m load_5m load_15m
  192.168.56.30            9          78  22    1.80    2.05     2.51
  192.168.56.10            6          75  14    1.24    2.45     1.37
  192.168.56.20            5          71  12    1.07    1.05     1.11
  --------------------------------------------------
  
  The last columns provide ancillary information that can often be
  useful when looking at the cluster as a whole, particularly large
  ones.  How many master-eligible nodes do I have?
  
  [source,sh]
  --------------------------------------------------
  node.role master name
  mdi       *      bGG90GE
  md        -      I8hydUG
  di        -      H5dfFeA
  --------------------------------------------------
  
  [float]
  