Challenge
A Veeam Cloud Service Provider observes that their tenant's jobs intermittently fail with either of the following errors:
Error Cloud gate has rejected connection. Reason: Connection target is not recognized. No rule exists.. (System.Exception)
Error Connection target is not recognized. No rule exists. (Veeam.Backup.Common.CCloudGateNoRuleException)
This issue can occur seemingly at random, with no pattern of which jobs, tasks, or tenants are affected.
More information
For high availability reasons, Veeam Cloud Service Providers can use DNS Round-Robin and external load balancers only for the name of the Service Provider when adding it to a tenant VBR server:https://helpcenter.veeam.com/docs/backup/cloud/cloud_connect_sp_settings.html
Cloud Gateway Configuration example from VCC Best Practice Resource: Load Balancers
Please keep in mind that Veeam has its own HA logic and keeps the names of all available Cloud Gateway Servers obtained from SP during a previous rescan or job run. This allows the tenant VBR server to automatically failover to the next gateway if some gateways are offline.
