Symptoms
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Old backups are not deleted automatically after several weeks.
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Keep backup files for is configured at Tools & Settings > Backup Manager > Schedule
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The server has a Subscription with more than 47 characters or a customer/reseller login with more than 25 characters.
Cause
Product issue:
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#PPPM-11018 “Rotation of server local backups now works even if the server hostname length exceeds 47 characters.”
Fixed in:- Plesk Obsidian 25 September 2019 (fixed as PPP-44325)
Resolution
Workaround
If update is not possible for some reason you may try the following
workaround
As a workaround:
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Connect to the server via SSH
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Download custom fix for Ubuntu 16.04 and Plesk 17.8
# wget https://plesk.zendesk.com/hc/article_attachments/360047066253/pmm-ras_plesk-17.8.ubuntu16.zip
Note: attached fix can be installed only on the same Plesk and OS versions that is specified in fix name.
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Unpack it, backup original file and replaced it with unpacked fix:
# unzip pmm-ras_plesk-17.8.ubuntu16.zip
# cp /opt/psa/admin/sbin/pmm-ras{,.back}
# mv pmm-ras /opt/psa/admin/sbin/pmm-ras
with