Alert only when action is needed, otherwise warnings get ignored.
Choose thresholds sensibly, with early-warning levels.
Clear responsibility: who receives the alert and who reacts?
Test the alert path, also outside working hours if necessary.
Use analysis: trends show when capacity becomes scarce.
Tools
There are open-source and commercial solutions from simple availability checks to comprehensive platforms. Many systems also bring their own monitoring, such as virtualisation platforms and network management. What matters is that results converge in one place and someone pays attention.
IT monitoringserver monitoringnetwork monitoringalertingavailability monitoring
Frequently asked questions
What is IT monitoring for?
It detects outages and bottlenecks early and warns those responsible before users are affected.
What should be monitored at minimum?
Availability of critical services, disk space, backup success and expiring certificates.
How do you avoid alert floods?
By sensible thresholds, alerting only when action is needed and regularly tidying up rules.