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Plesk backup rotation fails: ValueError: time data '1' does not match format '%Y-%m-%d-%H%M%S'

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Alexander Tsmokalyuk
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Plesk for Linux kb: bug

Applicable to:

  • Plesk for Linux

Symptoms

  1. Backups are not rotated according to Maximum number of full backup files to store and Keep backup files for settings in Tools & Settings > Backup Manager > Schedule 
  2. Backup rotation fails with the following error in /usr/local/psa/PMM/logs/pmmcli_daemon.log.<timestamp>:

    CONFIG_TEXT: ValueError: time data '1' does not match format '%Y-%m-%d-%H%M%S'

Cause

This is Plesk bug with ID #PPPM-10423 which will be fixed in future updates.

Resolution

As a workaround:

  1. Log in to Plesk server via SSH
  2. Make a copy of backup logs:

    # mkdir /root/backup && cp -a /var/log/plesk/PMM/*.log /root/backup

  3. Delete the logs from original location:

    # rm -rf /var/log/plesk/PMM/*.log*

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