Tracking system resources with journald
Log files contain system messages and output from services, the kernel, and all kinds of running applications. They can be very useful in many situations, for instance, to troubleshoot system problems and monitor services or other system resources, or doing security forensics after a breach of security. In this recipe, you will learn the basics of how to work with logging services using journald.
To complete this recipe, you will need a working installation of the CentOS 7 operating system with root privileges and a console-based text editor of your choice. Also, setting the time and date correctly is very crucial for the whole logging concept, so please apply the Synchronizing the system clock ...