There is a difference between centralized logging and centralized monitoring. In centralized logging, we log all the details about the events that occur in our system--they may be errors or warnings or just for informational purposes. Whereas in centralized monitoring, we monitor critical parameters, that is, specific information.
With logs, we can understand what has actually happened in the system or a specific transaction. We will have all the details about the specific transaction, such as why it started, who triggered it, what kind of data or resources it recorded, and so on. In a complex distributed system, such as microservices, this is really the key piece of information with which we can solve the entire puzzle ...
