This section discusses about the upgrade and patches. What to read next Upgrade OverviewAvi Load Balancer supports flexible methods for upgrading the Avi Load Balancer system. Patch OverviewAvi Load Balancer supports patch upgrades by which hotfixes are placed into effect. PrerequisitesThis section discusses about the prerequisites of Image Management and Service. Determine Software VersionThis topic details the methods to determine the specific Avi Load Balancer software version running on the Controller and its SEs. Pre/Post Upgrade Object Operational State VerificationThis section compares the pre/post-upgrade operational state using the CLI. Upgrade GuideThis section explains the steps to upgrade Avi Load Balancer System (Avi Load Balancer Controller and SE Groups) Upgrading SE GroupThis interface is used to upgrade all or some of the SE groups. Patch GuideThis section discusses about the patch upgrade options. RollbackRollbacks are non-disruptive. When a rollback operation is performed, the Avi Load Balancer Controller or SEs will transition to the previous major version of the software. Selective rollback is possible for the Controller and SE groups. Rollback - PatchRollback of a patch release transitions the software to a version without the specific patch. It will not roll back to the previous major version. Reset to Factory DefaultsIn some scenarios, it might be useful to reset the Avi Load Balancer to its factory default settings. With a few exceptions, factory reset is equivalent to completely reinstalling a fresh deployment. As part of the factory reset, the Controllers and SEs reboot and delete their load balancing and proxy configurations, while still maintaining their basic networking configurations. Locking a Linux System to a Specific OS VersionThis section explains the ways to prevent Specific OS Version from being updated. Parent topic: Avi Load Balancer Controller Operations
