max_size

  action: rollover description: >- Rollover the index associated with alias 'aliasname', which should be in the form of prefix-000001 (or similar), or prefix-yyyy.MM.DD-1. options: name: aliasname conditions: max_size: 5gb  

Note

At least one of max_age, max_docs, max_size or any combinations of the three are required as conditions: for the Rollover action.

The maximum approximate size an index is allowed to be before triggering a rollover. Sizes must use Elasticsearch-approved human-readable byte units. It must be nested under conditions: There is no default value. If this condition is specified, it must have a value, or Curator will generate an error.