What must you do after saving the multitenant.properties file on Linux?

After saving the multitenant.properties file on a Linux system, it's essential to restart the ActiveGate service. This is because changes made in the multitenant.properties file will not take effect until the service is restarted. The properties file contains configuration settings that the ActiveGate service relies on for its operation, including parameters related to multi-tenancy features.

When the ActiveGate service is restarted, it reloads its configuration files and applies the new settings. This step is crucial for ensuring that any modifications made to the properties file are recognized and operational, enabling the intended functionality and performance adjustments within Dynatrace.

The other options do not address the immediate requirement following a change in the configuration file. Clearing the cache or updating user permissions might be necessary in different contexts but are not directly related to the changes in the multitenant configuration. Switching to a different terminal session has no impact on the ActiveGate service configurations either. Therefore, the key action to take after updating this specific properties file is to restart the ActiveGate service to apply the new settings effectively.