CHAPTER 10Monitoring
We use automation to configure systems and applications in accordance with our wishes. In a perfect world, we would automate all changes to our hosts, and at the end of the workday, we would go home and not have to do any work again until the next morning. SAs will be the first to tell you that the world isn't perfect. Disk drives fill up; power supplies fail; CPUs overheat; software has bugs; and all manner of issues crop up that cause hosts and applications to fail. System and service monitoring is automation's companion tool, used to notify us when systems and applications fail to operate properly.
Right now, we are unaware of any hardware or software problems in our example environment. There are many key failure situations ...
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