https://docs.fluentd.org/v/0.12/articles/free-alternative-to-splunk-by-fluentd
https://era.co/blog/choose-open-source-log-collector
https://docs.fluentd.org/installation/install-by-deb
https://link.medium.com/VPtuWHcQQtb
https://sematext.com/guides/kubernetes-logging/#:~:text=Kubernetes%20Node%20Logging&text=These%20logs%20are%20usually%20located,rotation%20policy%20set%20in%20place.