Hi, I'm completely new in Elastic Search. I've installed E+L+K (logstash 6.0.1) on the officially supported Debian 9.3 following the official documentation. After installation I let it be and did nothing with it, today I found that logstash is eating my CPU. I've upgraded (by apt-get upgrade) to the 6.1.1 with no difference. It is running on headless JRE from OpenJDK which is AFAIK officially supported.
Please do I need to install full JDK for some jstack tools (just googled about it) or how to find the problem?
Again, there is no custom configuration, no beats, this is brand new installation so there is something wrong with java or logstash itself. FML
logstash 32348 188 4.0 3445580 331980 ? SNsl 15:51 0:18 /usr/bin/java -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+DisableExplicitGC -Djava.awt.headless=true -Dfile.encoding=UTF-8 -XX:+HeapDumpOnOutOfMemoryError -Xmx1g -Xms256m -Xss2048k -Djffi.boot.library.path=/usr/share/logstash/vendor/jruby/lib/jni -Xbootclasspath/a:/usr/share/logstash/vendor/jruby/lib/jruby.jar -classpath : -Djruby.home=/usr/share/logstash/vendor/jruby -Djruby.lib=/usr/share/logstash/vendor/jruby/lib -Djruby.script=jruby -Djruby.shell=/bin/sh org.jruby.Main /usr/share/logstash/lib/bootstrap/environment.rb logstash/runner.rb --path.settings /etc/logstash