Grafana is good for a web interface for metric graphs https://grafana.com/
we use it at work with Metrictank on the back end. Graphite is an alternate
back end.
For log analysis you can use fluentd or logstash to gather logs along with
ElasticSearch and Kibana to provide a web interface. I don't
Whats a good FOSS log analysis system? I'm after something that will
aggregate the logs of multiple systems and give results on demand through a
web interface and allow alerts to be propagated to a monitoring system.
Also what's a good FOSS system for graphing all the metrics of a system
