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When Open-AudIT receives data about a device, either by discovering the device during an audit run or by the user importing the device, it must determine if this discovered device matches a device that already exists within its database, or if it is a new device that should be added. Open-AudIT uses a series of twelve property matches to determine this. The Match Rules work as OR comparisons, not AND. This means the first rule that matches a field in the discovered device to one in the dB resolves as an existing device. All Matching Rules have to fail in order for a device to be new and result in a new record being created.
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It is important to note that when Open-AudIT determines a match any properties set to 'y' must match exactly (and not be blank) in order for Open-AudIT to determine that the discovered device matches a device already in the database. If all of these properties do not match, then a new device entry will be created, which could result in duplicate device entries. In situations where properties are duplicated, for example a dbus_id is copied during a VM clone, then an existing device may incorrectly get overwritten/updated rather then a new entry being created resulting in missing devices. |
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