logstash -f .\config1\sample_1.conf
and
logstash -f .\config1\sample_2.conf
without a problem :
[2019-04-03T16:51:38,043][WARN ][logstash.config.source.multilocal] Ignoring the 'pipelines.yml' file because modules or command line options are specified
[2019-04-03T16:51:38,361][FATAL][logstash.runner ] Logstash could not be started because there is already another instance using the configured data directory. If you wish to run multiple instances, you must change the "path.data" setting.
[2019-04-03T16:51:38,410][ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit
So how can I run those 2 config files without maken a whole new directory