As a developer / operator of Search, I want to have better visibility on large indices, be able to isolate their impact to other search indices and tune the resources according to specific needs.
Wikibase related indices are larger and growing faster than our other indices. This presents an issue for resources allocation. Isolating those indices on a specific cluster should allow better visibility, resources management / planning.
Some investigation is needed to decide what the optimal solution is here (another cluster on the same physical hosts, how to split the hardware resources, moving some smaller indices to Ganeti, other solutions...).
- Commons and Wikibase indices are served from a dedicated elasticsearch cluster.