Logging changesedit

%node_name in logging patternedit

To make the node name appear consistently in Elasticsearch’s logs and to clean up much of the internal logging code we’ve removed the node name from the "marker" in the logging configuration. If you do not customize your logging configuration file then there is nothing for you to do. If you do customize your logging configuration properties then you should replace %marker with `[%node_name]%marker `, including the trailing space. If you do not do so Elasticsearch will log a warning on startup and log with the new pattern. It will not change the logging configuration files though. You should make this change before 7.0 because in 7.0 Elasticsearch will no longer automatically add the node name to the logging configuration if it isn’t already present.