request: configuration option to enable multiple invenio instances to share an elasticsearch instance

[dfdan]

It is easy to configure multiple invenio instances to share the same PostgreSQL and Redis servers, by separating their data with different postgres roles / redis URLs. However, this is not currently possible with ElasticSearch as it lacks any sort of namespacing, and index names will collide if you point 2 invenio instances at the same elasticsearch instance.

We are trying to work around this by manually specifying different index names for each instance, however this is fiddily.

Would it be possible to add an invenio-search configuration option that specifies a (unique) prefix to be used by a particular invenio instance? Or is there a better way to do this?

[david-caro]

This could be done with prefixes, allowing then to use cern hosted elasticsearch too right?

[slint]

@dfdan's use case was more about multi-tenancy (where ES prefixing is the main blocker atm for Invenio)