By default, all logs are centralized in a cluster group called talend-log-central. However, if you want to use a different cluster name, for example if you do not want to mix logs from different environments such as Quality Assurance logs and production logs, do the following.
Open the logstash-talend.conf file located in the Talend Log server installation directory.
Edit the name of the cluster in the
output
part:output { elasticsearch { embedded => true cluster => "talend-log-central" }