This User Source was developed specifically for a system that is using Local Vision Client Fallback, and allows you to cache the login credentials from a remote user source. This means your users can still log in with their normal username/password on a Local Vision Client Fallback project, even when the network connection is unavailable.
The Fallback Cache User Source is created in a similar fashion to any other User Source:
On the Gateway Webpage, go to the Config tab. Select Security > User, Roles.
Clickon the Create new User Source... link.
Select the Fallback Cache option and click the Next button.
Type in a name for the new User Source and click Create New User Source.
Details on the Main Properties can be found on the User Sources page. You can also set Cache Retention as follows.
Fallback Cache Properties
Number of days that the cache will retain recently used credentials. This property determines the number of days credentials will be stored in the cache. Once exceeded, the credentials will be removed from the cache. (Default: 15)
Click the Create New User Source button.
Populating the Cache
Users and Roles can not be manually added to the Fallback Cache. Instead, they are automatically copied from remote Gateways. This type of User Source is normally configured on an Edge Gateway, but can be utilized on an Ignition Gateway.
Before the Fallback Cache will populate, both the Central Ignition Gateway and Fallback Gateway must be connected over the Gateway Network. The credentials are passed from a User Source on the Central Ignition Gateway to the Fallback Cache over the Gateway Network.
A Fallback Cache User Source must exist on the Fallback Gateway.
A client must be launched on the Fallback Gateway from the Central Ignition Gateway. If the user successfully authenticates against the Central Ignition Gateway's User Source, then the credentials are cached into the Fallback Cache.