Installing and using Elasticsearch, Fluentd, and Kibana

Fluentd is software that's frequently used to collect and aggregate logging. Hosted at https://www.fluentd.org, like prometheus it is open source software that is managed under the umbrella of the Cloud Native Computing Foundation (CNCF). When it comes to talking about aggregating logs, the problem has existed long before containers, and ELK was a frequent acronym used to represent a solution, the combination of Elasticsearch, Logstash, and Kibana. When using containers, the number of log sources expands, making the problem of collecting all the logs even larger, and Fluentd evolved to support the same space as Logstash, focusing on structured logging with a JSON format, routing it, and supporting plugins to process the logs. Fluentd was written in Ruby and C, intending to be faster and more efficient than LogStash, and the same pattern is continuing with Fluent Bit (http://fluentbit.io), which has an even smaller memory footprint....