The Shard Allocation dashboard displays how the shards are allocated across nodes. The dashboard also shows the status of the shards. It has two perspectives, By Indices and By Nodes. The By Indices view lists each index and shows you how it’s shards are distributed across nodes. The By Nodes view lists each node and shows you which shards the node current host.

The viewer also has a playback feature which allows you to view the history of the shard allocation. You can rewind to each allocation event and then play back the history from any point in time. Hover on relocating shards to highlight both their previous and new location. The time line color changes based on the state of the cluster for each time period.