To monitor Sync Service, see Sync Service health check.
To get detailed logging information on Sync Service, change the logging level in the config.yml file as shown below:
logging:
level: DEBUG
loggers:
"org.alfresco.service.common.auth": DEBUG
"org.apache.activemq": DEBUG
"com.sun.jersey.api.container.filter.LoggingFilter": WARN
"org.alfresco.service": DEBUG