Update Logstash Keystore while it's running as a Service

Elastic Stack Logstash
#1

Is there is any recommendation on how to make changes to Logstash keystore variables (update variable or add new ones) while the service is running.
Do we need to stop the service before making changes?
Does it require a restart of the service for the changes to take effect?

Thanks,

#2

You can add or remove variables to the Keystore while Logstash is running, but you will need to restart the service for the new values to work.

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