The logback.xml configuration file is extended by an additional package based logging directive:

<logger name=com.hazelcast.internal.monitors level=INFO/>

Additionally, the following property is added in the configuration file hazelcast.properties:

# Controls the log level for regular statistics of the health monitor.
# Possible values include off (disables the health monitor), silent
# (prints out statistics if certain thresholds are exceeded) and noisy
# (always prints out statistics). Defaults to silent.
# Note: Please also check the configured log level for
# com.hazelcast.internal.monitors.HealthMonitor.
com.openexchange.hazelcast.healthMonitorLevel=sile nt