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CNR 7.2.1 manually trim lease history

Hi.

How to manually trim lease history on CNR 7.2.1.

When changing ip-history-max-age from 4w to 3months and then back, lease history database was not automatically trimmed. Now dhcp.ndb is about 8GB.

This large database affects internal database backup that occurs every day at 23:45 causing high load and sometimes CNR unresponsiveness.

Using lease history search I can see leases "Bind End Time" old as one year. How to manually delete them or how to delete all lease history.

This is my current configuration:

ip-history = v4-only

ip-history-detail = false

ip-history-max-age = 1w

Thanks

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