I've managed a full elastic search + graylog cluster. It was very easy to setup and maintain. https://thehftguy.com/2016/09/12/250-gbday-of-logs-with-graylog-le

I've managed a full elastic search + graylog cluster. It was very easy to setup and maintain. https://thehftguy.com/2016/09/12/250-gbday-of-logs-with-graylog-lessons-learned/ https://thehftguy.com/2016/09/12/250-gbday-of-logs-with-gray... By far elasticsearch is the easiest distributed database to setup and scale.