When using Cross Cluster Search with Remote clusters, it's much preferred to use the _resolve/index API rather than the _cat/indices API.

The following two patterns can be used to identify both local and remote indices at the same time

• Remote: *:*<pattern>*
• Local: *<pattern>*

Example for .monitoring pattern:

GET _resolve/index/*:*.monitoring*,*.monitoring*?filter_path=*.name

This would provide a much more cohesive experience for users who have no idea where the data lives.

It also provides context as to whether the found match is an "indices", "aliases" or "data_streams".