cat allocation

allocation provides a snapshot of how shards have located around the cluster and the state of disk usage.

% curl '192.168.56.10:9200/_cat/allocation?v'
shards diskUsed diskAvail diskRatio ip            node
     1    5.6gb    72.2gb      7.8% 192.168.56.10 Jarella
     1    5.6gb    72.2gb      7.8% 192.168.56.30 Solarr
     1    5.5gb    72.3gb      7.6% 192.168.56.20 Adam II

Here we can see that each node has been allocated a single shard and that they’re all using about the same amount of space.