@organicveggie Thanks for this, I would bet custom locations _have_ worked in the past, maybe before Ark integration or some Ark chage. However, why set the attributes here, in the recipe file? Why not just use `node.elasticsearch[:dir]`? To allow them setting `node.ark[:prefix_root]` globally? Shouldn't we then do something like `node.ark[:prefix_root] || node.elasticsearch[:dir]` ?