To limit access in vRealize Log Insight for application developers to a specific group of hosts, the administrator can define a data set that includes only the required ESXi hosts where the application is running, and then associate this data set with a specific role. By doing this, the administrator ensures that the developers only have access to the logs from those specific hosts.

This method leverages the role-based access control (RBAC) in vRealize Log Insight, allowing granular control over the logs that users can access based on their assigned role and the data sets to which they are associated.