I could in url https://www.elastic.co/guide/en/logstash/current/installing-logstash.html that Log stash requires java 8.Does it mean log stash not supports all java versions < java 8 ?.
Please let me know overall steps
How to show often changing different .log files from different UNIX machines in KIBANA in more graphical way using Log stash ?
From https://www.elastic.co/support/matrix#show_jvm:
Logstash 5+ does not support versions earlier than 8. Older versions of Logstash (up to 2.4) supports java 7.