Which configuration line sets the maximum hot span seconds for the securityops index?

The configuration line that sets the maximum hot span seconds for the securityops index is correctly identified as involving the maxHotSpanSecs setting. This setting controls the duration of time that data can remain in the "hot" state before it is rolled to "warm."

In the context of Splunk, hot data refers to the most recently indexed data which is actively being written to. The maxHotSpanSecs parameter is crucial as it defines how long this data remains in this high-performance state. When the specified maximum hot span is reached, Splunk will trigger the rollover of the hot buckets, transitioning them to warm buckets.

The specified value of 86400 seconds (which is equivalent to 24 hours) allows the data to stay in the hot state for a full day before it gets rolled over. This is particularly important for ensuring that data is retained in a performance-optimized state for a sufficient duration for active querying.

Other options, while relevant to data management in Splunk, address different aspects such as data retention and the configuration of frozen data. They do not pertain directly to setting the maximum hot span for an index.