Virtualmin - Backup

See also Webmin Backup

Requires separate Webmin backup!

• Backups require free space in /tmp
• Estimate the amount of temporary space needed by the size of your largest Virtual Server
  • Choices for disk space:
    • Make sure the installation partition with the root filesystem has sufficient space
    • Extend the installation partition and root filesystem
    • Change the temporary folder used to one with more space
    • Add an additional disk/partition and mount it on /tmp
      • chmod 1777 /tmp
• Scheduled backup jobs can cause disruptions of hosted services
  • Prioritize CPU utilization of scheduled jobs (nice level)
  • Prioritize IO utilization of scheduled jobs (ionice level)

Virtualmin → Backup and Restore → Scheduled Backups

• All Virtual Servers
• Include Sub-Servers
• Any Plan
• Backup All Features
• FTP Server
  • 123.123.123.123
    • IP address or FQDN of FTP server
  • backupuser
    • FTP user name
• Enable strftime-style time substitutions in the file or directory name
• Enable Transfer each virtual server after it is backed up
• Enable One File per server
• Enable Create destination directory
• Enable Continue with other features and servers
• Enable Full (all files)
• Configure Email backup report to (admin e-mail address)
• Enable Only send email on failure (if you are confident the backups are working)
• Kill the running backup if the destination is in use

Create two scheduled backup jobs:

• Weekly Full
  • Simple Schedule
    • Weekly on Sunday
  • Virtualmin/Full/%m-%d-%y as destination path
    • Name resulting backup as 'month-day-year'
  • Delete old backups after 60 Days
• Daily Incremental (actually differential)
  • Virtualmin/Incremental/%m-%d-%y
  • Delete old backups after 6 Days
  • Incremental (only files changed since last full backup)
  • Complex schedule
    • At cron time 0 0 * * 1-6
    • At midnight Monday through Saturday

Webmin → Webmin → Webmin Configuration → Advanced Options

• Temporary files directory → /tmp/.webmin (default)
• CPU priority for scheduled jobs → 10
• IO priority for scheduled jobs → 5