if [ -x "/etc/init.d/logstash" ]; then
update-rc.d logstash defaults >/dev/null
fi
if [ -x "/etc/init.d/logstash" ] || [ -e "/etc/init/logstash.conf" ]; then
invoke-rc.d logstash start || exit $?
fi
mkdir -p /var/log/logstash
chown -R logstash:logstash /var/log/logstash
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