In the recipe, we backed up all configuration areas, but we can select only a subset of the configuration using the Backup area drop-down menu. This is useful if we only need to backup a specific portion of the configuration. Note that we can select All and still exclude package and Round Robin Database (RRD) data. While it is generally good practice to save package information, you probably do not need to save RRD data; although it might prove useful later as a diagnostic tool, it can consume four megabytes or more of config.xml space.
If you need to review the recent config changes, click on the Config History tab. This tab provides functionality similar to the Restore recent configuration command available from the console/SSH. In addition to viewing all recent config changes, you can perform the following operations:
- View the difference between two configurations by selecting the older configuration in the right column of radio buttons, selecting the newer configuration in the left column, and clicking on the Diff button:
- The XML file contents will appear at the top of the page, showing what has been added (text with a green background), what has been removed (text with a red background), and what is unchanged (body text with a gray or white background; unchanged headers take gray backgrounds). An example of this is shown in the following screenshot:
- Revert to a previous configuration (the reverse arrow symbol).
- Save a previous configuration as a backup XML file (the downward arrow).
- Delete a previous configuration (the trashcan).