Index: bin/logstash-plugin
--- bin/logstash-plugin.orig
+++ bin/logstash-plugin
@@ -4,6 +4,9 @@ unset CDPATH
 . "$(cd `dirname $0`/..; pwd)/bin/logstash.lib.sh"
 setup
 
+# set HOME to keep Maven repo for Logstash in /var/logstash/.m2
+export HOME=${LOCALSTATEDIR}/logstash
+
 # bin/logstash-plugin is a short lived ruby script thus we can use aggressive "faster starting JRuby options"
 # see https://github.com/jruby/jruby/wiki/Improving-startup-time
 export JRUBY_OPTS="${JRUBY_OPTS---dev}"