anchor.diff:  
   The `nodes` command shows the cluster topology.
   
  -["source","sh",subs="attributes,callouts"]
  +[source,sh]
   --------------------------------------------------
  -% curl 192.168.56.10:9200/_cat/nodes
  -SP4H 4727 192.168.56.30 9300 {version} {jdk} 72.1gb 35.4 93.9mb 79 239.1mb 0.45 3.4h mdi - Boneyard
  -_uhJ 5134 192.168.56.10 9300 {version} {jdk} 72.1gb 33.3 93.9mb 85 239.1mb 0.06 3.4h mdi * Athena
  -HfDp 4562 192.168.56.20 9300 {version} {jdk} 72.2gb 74.5 93.9mb 83 239.1mb 0.12 3.4h mdi - Zarek
  +% 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.  For sanity it
  -also tells you what version of ES and the JVM each one runs.
  -
  -["source","sh",subs="attributes,callouts"]
  ---------------------------------------------------
  -nodeId pid  ip            port version     jdk
  -u2PZ   4234 192.168.56.30 9300 {version} {jdk}
  -URzf   5443 192.168.56.10 9300 {version} {jdk}
  -ActN   3806 192.168.56.20 9300 {version} {jdk}
  ---------------------------------------------------
  -
  -
  -The next few give a picture of your heap, memory, and load.
  +The first few columns tell you where your nodes live and give
  +a picture of your heap, memory, cpu and load.
   
   [source,sh]
   --------------------------------------------------
  -diskAvail heapPercent heapMax ramPercent  ramMax load
  -   72.1gb        31.3  93.9mb         81 239.1mb 0.24
  -   72.1gb        19.6  93.9mb         82 239.1mb 0.05
  -   72.2gb        64.9  93.9mb         84 239.1mb 0.12
  +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?  How many client
  -nodes?  It looks like someone restarted a node recently; which one was
  -it?
  +ones.  How many master-eligible nodes do I have?
   
   [source,sh]
   --------------------------------------------------
  -uptime node.role master name
  -  3.5h di        -      Boneyard
  -  3.5h md        *      Athena
  -  3.5h i         -      Zarek
  +node.role master name
  +mdi       *      bGG90GE
  +md        -      I8hydUG
  +di        -      H5dfFeA
   --------------------------------------------------
   
   [float]
  
positive.code: indexing |134ms
  |`indexing.index_total` |`iito`, `indexingIndexTotal` |No |Number of
  indexing operations |1
  |`merges.current` |`mc`, `mergesCurrent` |No |Number of current
  merge operations |0
  |`merges.current_docs` |`mcd`, `mergesCurrentDocs` |No |Number of
  
negative.code: mode (`v`). The header name will match the supplied value (e.g.,
  `pid` versus `p`).  For example:
  
  [source,sh]
  --------------------------------------------------
  % curl 192.168.56.10:9200/_cat/nodes?v&h=id,ip,port,v,m
  id   ip            port v           m
  