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This document outlines the steps that need to be carried out to backup and restore a OSCAR headnode.

NOTE These steps have been verified minimally - use only in an experimental environment and provide us with your comments/feedback at oscar-devel.

Backing up OSCAR

The following files/directories need to be backed up:

• C3 configuration file
  • /etc/c3.conf
• ODA (MySQL ‘oscar’ database):
  • Database backup
    • Run scripts/oda dump <filename>
    • Dump will be saved in tmp/oda_dump
  • Password
    • /etc/oscar/odapw
• Hosts file
  • /etc/hosts
• SSH-related files
  • /etc/ssh/ssh_host*
  • /root/.ssh
• SystemImager images
  • /var/lib/systemimager/images
• SystemImager scripts
  • /var/lib/systemimager/scripts
• SystemImager overrides
  • /var/lib/systemimager/overrides
• SystemImager configuration files
  • /etc/systemimager
• SystemInstaller database
  • /var/lib/sis
• tftpboot-related files
  • /tftpboot/pxelinux.cfg

Restoring OSCAR

• Re-install OS
• Re-install OSCAR
  • Run install_cluster but quit the Wizard/CLI after completing step “Install OSCAR Server Packages”
• Restore ODA dump
  • Run scripts/oda restore <filename>
• Restore backed up files/directories:
  • /etc/c3.conf
  • /etc/oscar/odapw (restore password by running scripts/oda reset_password)
  • /etc/hosts
  • /etc/ssh/ssh_host*
  • /root/.ssh/
  • /var/lib/systemimager/images
  • /var/lib/systemimager/scripts
  • /var/lib/systemimager/overrides
  • /etc/systemimager
  • /var/lib/sis
  • /tftpboot/pxelinux.cfg
• If clients are configured to network boot, re-run “Setup Network Boot”
• And OSCAR is back…