Configuring multiple nodes in one Elastic installation

Elastic Stack Elasticsearch
1

Hello everybody,
I'm trying to set up multiple Elasticsearch nodes in one installation.
For the moment it is a test so I have no performance problems (but any advice is welcome).
Based on some readings on the net I tried like this:

  1. I renamed Elasticsearch.yml to Elasticsearch.yml.bck,
  2. I created two Elasticsearch-1.yml and Elasticsearch-2.yml with the following content (change "1" with "2" on all parameters to obtain the second node):
node.name: node-1
path.data: /var/lib/elasticsearch-1
path.logs: /var/log/elasticsearch-1
http.port: 9201
transport.port: 9301
network.bind_host: 0.0.0.0
http.cors.enabled: true
http.cors.allow-origin: "*"
  1. I created the new folders by copying from /var/lib/Elasticsearch and from /var/log/Elasticsearch:
    /var/lib/Elasticsearch-1
    /var/lib/Elasticsearch-2
    /var/log/Elasticsearch-1
    /var/log/Elasticsearch-1

When I start the service I get the following error messages from Log4J:

elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2021-12-15 10:39:41 CET; 4s ago
     Docs: http://www.elastic.co
  Process: 2197 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet (code=exited, status=1/FAILURE)
 Main PID: 2197 (code=exited, status=1/FAILURE)

Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,376 main ERROR Null object returned for RollingFile in Appenders.
Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,376 main ERROR Unable to locate appender "rolling" for logger config "root"
Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,376 main ERROR Unable to locate appender "index_indexing_slowlog_rolling" for logger config "index.indexing.slowlog.index"
Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,376 main ERROR Unable to locate appender "audit_rolling" for logger config "org.elasticsearch.xpack.security.audit.logfile.LoggingAuditTrail"
Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,377 main ERROR Unable to locate appender "index_search_slowlog_rolling" for logger config "index.search.slowlog"
Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,377 main ERROR Unable to locate appender "deprecated_audit_rolling" for logger config "org.elasticsearch.xpack.security.audit.logfile.DeprecatedLoggingAuditTrail"
Dec 15 10:39:41 <omissis host> elasticsearch[2197]: 2021-12-15 10:39:41,377 main ERROR Unable to locate appender "deprecation_rolling" for logger config "org.elasticsearch.deprecation"
Dec 15 10:39:41 <omissis host> systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Dec 15 10:39:41 <omissis host> systemd[1]: Unit elasticsearch.service entered failed state.
Dec 15 10:39:41 <omissis host> systemd[1]: elasticsearch.service failed.

Unfortunately I'm not familiar with Log4J, what can be the problem?

Thanks in advance for any suggestions.

at

2

Please...
Anyone have any suggestions or experiences on this?

at