I set up my blackbox exporter to monitor some network appliances via ICMP but its RTT was always zero. I'll share how to investigate this problem and solve it. First I added the following module setting to blackbox.yml because I've never used ICMP monitoring before. 1modules:2icmp:3prober:icmp4timeout:5sThen, I added …

EC2 Service Discovery is very useful in the Prometheus configuration especially when the autoscale is used. However, some temporary or test servers which do not need to be monitored will be cause of unnecessary alerts. So, I added some settings to avoid it. For example, if I would like to eliminate instances which have …