[[allow-all-cluster-allocation]]
== Allow Elasticsearch to allocate the data in the system

The allocation of data in an {es} deployment can be controlled using the <<cluster-routing-allocation-enable, enable 
cluster allocation configuration>>.
In certain circumstances users might want to temporarily disable or restrict the
allocation of data in the system. 

Forgetting to re-allow all data allocations can lead to unassigned shards.

In order to (re)allow all data to be allocated follow these steps:

include::{es-repo-dir}/tab-widgets/troubleshooting/data/enable-cluster-allocation-widget.asciidoc[]