The following section in the documentation:
...could potentially be expanded to clarify when, where, why and how to change the config file polling/startup read behavior (openidm.fileinstall.enabled) and the file write behaviour (felix.fileinstall.enableConfigSave).
For example, when setting up a two node cluster, openidm.fileinstall.enabled=false should be commented out on clustered-first and uncommented on clustered-additional. Once clustered-first has been started for the first time, then also uncomment openidm.fileinstall.enabled=false on clustered-first. In this case then both nodes will read only from the repository and any further configuration changes can be made via the admin UI or the REST interface.