How to monitor a micro-service oriented solution?

I run a micro-service oriented system, running under a private network, composed mainly of:

• databases (clusters)

• internal API's

• external/public API's

• workers (services)

• monitoring servers

All are running Debian (7/8) and mainly using nginx and supervisor.

I'm currently monitoring logs using ELK stack. But I do want to have a monitoring/alerting system to include the following:

• internal/public API's (calls)

• databases status (only basic, to know when the cluster does not have issues)

• ram/cpu for the servers

What do you recommend to use? I'm more open to open-source solution, but also can pay for services that are mature (not interested in startup solutions)

Prometheus is a popular tool for monitoring microservices deployed to the cloud in combination with Grafana. For a better understanding of your inter-service issues, a distributed tracing tool is needed as well.

StackExchange DevOps Q#5893, answer score: 2