Backup and Restore

Backup and Restore of ICE ClusterWare Software

The scyld-install script can also be used to back up and restore all cluster-specific data, including the cluster configuration, images, and node details. To back up the cluster:

scyld-install --save /path/to/backup.zip

By default the produced ZIP archive can be quite large, as it will contain all boot files and root file system images. If these files are archived by other means, e.g. as part of a backup solution for cluster-wide shared storage, then system administrators may want to include the --without-files option. The resulting ZIP file will contain only the ICE ClusterWare™ database. Be aware that this option should only be used if those files are separately archived or when providing a copy of your ClusterWare database to Penguin Computing technical support.

A previously produced archive can also be loaded by the scyld-install script:

scyld-install --load /path/to/backup.zip

Important

Loading a ZIP backup will erase all data and all images and replace them with the corresponding contents from the archive.

During save and load, the scyld-install script is actually using the managedb tool that provides additional options and capabilities. For details see managedb.

Backup and Restore of the Database

Cluster administrators may wish to capture the database state in the event that a database restore operation is desired in the future. This can be done by manually executing the /opt/scyld/clusterware/bin/take-snapshot tool, or more preferably by setting up a cronjob to periodically execute that tool.

For details see take-snapshot.