Plesk Migrator error: Unable to restore DNS zone from a backup: Incorrect DNS record values were specified: example.com. IN <Record Type> *.example.com.: ('ttl' = '0')

Pablo Alvarez

Updated December 24, 2024 19:01

kb: bug Plesk for Windows Plesk for Linux ext: migrator

Applicable to:

Migrating or restoring a subscription in Plesk fails

Incorrect DNS record values were specified: ns1.example.com. IN A 203.0.113.2: ('ttl' = '0')
It's not possible to create a DNS record on Plesk with TTL value of 0

Value is invalid. It can be from 1 second to 2147483647 seconds.

This is caused by product issue PPPM-13621, where DNS records with TTL value of 0 can't be used.

While a fix is released, the workaround is to manually set TTL to 0 after the records have been created.

Before Migration

Log in to the source server over SSH
Run this command to back up the Plesk database and reset all DNS records to the default TTL

# plesk db dump psa > /root/psa_pre_ttl_reset-$(date +%F_%T).sql && plesk db "UPDATE dns_recs SET ttl=DEFAULT(ttl) WHERE ttl=0"
Re-sync the affected subscriptions on the target server
Set the desired records back to 0 TTL directly on the Plesk database:

# plesk db "UPDATE dns_recs SET ttl=0 WHERE host LIKE '%affected_record%'"

After Migration

Log in to Plesk on the target server
Create the affected DNS records manually
Set the desired records back to 0 TTL directly on the Plesk database

# plesk db "UPDATE dns_recs SET ttl=0 WHERE host LIKE '%affected_record%'"