IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Index-level data tier allocation filtering
editIndex-level data tier allocation filtering
editYou can use the index-level _tier_preference setting to control
which data tier an index is allocated to.
This setting corresponds to the data node roles:
The data role is not a valid data tier and cannot be used
with the _tier_preference setting. The frozen tier stores partially
mounted indices exclusively.
Data tier allocation settings
edit-
index.routing.allocation.include._tier_preference -
Assign the index to the first tier in the list that has an available node.
This prevents indices from remaining unallocated if no nodes are available
in the preferred tier.
For example, if you set
index.routing.allocation.include._tier_preferencetodata_warm,data_hot, the index is allocated to the warm tier if there are nodes with thedata_warmrole. If there are no nodes in the warm tier, but there are nodes with thedata_hotrole, the index is allocated to the hot tier. Used in conjunction with data tiers.