Rolling upgrades

A rolling upgrade involves upgrading multiple OneSpan Authentication Server instances while keeping the authentication service alive. Environments that require a rolling upgrade typically support high-availability services, where the authentication service absolutely cannot be taken offline.

An environment that requires a rolling upgrade typically has the following characteristics:

• There are multiple instances of OneSpan Authentication Server running on multiple servers.
• All OneSpan Authentication Server instances either use the same database as their data store, or each one instance has its own data store.
• The OneSpan Authentication Server upgrades involved will require a database schema update.
• User load distribution between all OneSpan Authentication Server instances is managed by a third-party application.

Before you proceed with a rolling upgrade, you must first address the different usability and load management issues involved.