BACKPORT Make .async-search-* a restricted namespace (#50294) #50898
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Backport of #50294
Hide the
.async-search-*
in Security by making it a restricted index namespace.The namespace is hard-coded.
To grant privileges on restricted indices, one must explicitly toggle the
allow_restricted_indices
flag in the indices permission in the role definition.As is the case with any other index, if a certain user lacks all permissions for an
index, that index is effectively nonexistent for that user.