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We use Nagios. Probably this link helps a little bit.
Proactive monitoring could mean a number of things, so depends on exactly what you're looking to solve. Our arsenal includes:
Finding correlations between the various tools can help - but you can also get lost in too much data. May be simpler to find an API endpoint you can call, time how long it takes to respond and if it takes longer than your threshold, or, doesn't return the expected data then you likely have an issue. This follows the pattern of monitoring the application itself, and not the servers as your users use the application, not the servers (directly).
Hope you are doing well.
For ELK (https://www.elastic.co/elk-stack)
Can you point me to a tutorial on how to accomplish this using ELK stack?
I found video "https://www.youtube.com/watch?v=SQ2pyS6aTpM"
mentioning about the similar topic but did not show the audience how to actually set it up.
This is a verry intressing topic and you got a verry intressing presentation here https://pt.slideshare.net/aca_it/monitor-your-atlassian-stack-like-the-nsa
Curently we are using the Google Analytics, JavaMelody and Nagios. We had tried the ELK stack but the logstash was dificult to configure with catalina.out
I think atlassian should provide some guidelines on this topic.
This discussion is related to this topic.