[[cat-allocation]]
== cat allocation

`allocation` provides a snapshot of how many shards are allocated to each data node
and how much disk space they are using.

[source,sh]
--------------------------------------------------
% curl '192.168.56.10:9200/_cat/allocation?v'
shards disk.indices disk.used disk.avail disk.total disk.percent host          ip            node
     1        3.1gb     5.6gb     72.2gb     77.8gb          7.8 192.168.56.10 192.168.56.10 bGG90GE
     1        3.1gb     5.6gb     72.2gb     77.8gb          7.8 192.168.56.30 192.168.56.30 I8hydUG
     1        3.0gb     5.5gb     72.3gb     77.8gb          7.6 192.168.56.20 192.168.56.20 H5dfFeA
--------------------------------------------------

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.