by Rich Raposa (Red Hat)
Drift is the unplanned or unintended changes that occur on a resource’s configuration. System administrators need the ability to track drift in their data centers to improve availability and reliability of their platforms, servers and applications.
Drift monitoring is a new feature in the latest version of the JBoss Operations Network 3.0 (JON). You can define a drift detection definition on the Drift page of a resource. Click the New button, assign your drift definition a name, a base directory, then select the files and/or folders to be monitored for drift. Wait a few minutes and JON will take the initial snapshot (snapshot 0) of your monitored files. Each time drift is detected, JON takes a new snapshot of the monitored files. Each snapshot has a number, and snapshots can be viewed in an intuitive, new view known as the snapshot carousel by double-clicking on the drift definition from the Drift page of the resource.
Even more powerful is the ability to pin a snapshot, allowing you to define what it means for those files in the snapshot to be drift compliant. Click the pin icon of a drift definition to view the files being monitored. On this page, click the Pin to Definition button to pin this snapshot to the resource. The current files will become a new snapshot 0, and if drift is detected against this pinned snapshot, then the affected resource is flagged as being non-compliant. View the snapshot carousel to determine the exact cause of non-compliance and help bring the resource back in to compliance quickly!
In the all-new JBoss Systems Management with JON (JB234) course, students will learn more about Drift monitoring.