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Cisco Bug: CSCvv18827 - Enforce upgradeInProgress indicator and Backup APIC DB before dataconversion

Last Modified

Sep 18, 2020

Products (1)

  • Cisco Application Policy Infrastructure Controller (APIC)

Known Affected Releases

4.1(2x) 4.2(3i)

Description (partial)

APIC DB may lose during 3.0/3.1 to 4.0/4.1 upgrade if the target version is rolled back to current running version within 2 minutes after upgrade started.  The upgrade will continue anyway and however APIC would lose all DB and fail to login by admin credentials, only rescue-user/admin credential allows the log in.  All process' shard shows as unexpected, and DB files were removed. The last working ex-upgrade DB are copied to purgatory directory.

1, During 3.0/3.1 to 4.0/4.1 upgrade, if the target version was rolled back to beginning version within first two minutes. All APICs would experience DB loss and Fabric ID recovery will be required.
2,APIC manual upgrade from 3.0/3.1 to 4.0/4.1. However the impact is contained because APIC can recover  DB from rest of APICs by snapshot.
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