The health check has 4 different results depending from the server's state:

• UP
  • The server is up and running. Also the server has nodes.
  • {"status":"UP","description":"Neo4j health check was success."}
• OUT_OF_SERVICE
  • The server is up and running but it has 0 nodes.
  • {"status":"OUT_OF_SERVICE","description":"Neo4j has no available node!"}
• DOWN
  • The server is not available.
  • {"status":"DOWN","description":"Neo4j health check result was invalid!"}
• OUT_OF_SERVICE
  • An error occurred during the query state.
  • {"status":"OUT_OF_SERVICE","description":"Neo4j health check failed!","error":"java.lang.NullPointerException: detail"}

NEO4J_HOME/conf/neo4j.conf

dbms.security.auth_enabled=false
dbms.unmanaged_extension_classes=com.brinkus.labs.neo4j.health.unmanaged=/labs

NEO4J_HOME/conf/neo4j-server.properties

dbms.security.auth_enabled=false
org.neo4j.server.thirdparty_jaxrs_classes=com.brinkus.labs.neo4j.health.unmanaged=/labs