Gathering basic OS statistics
One of the most basic responsibilities of a DevOps engineer is to know how the various server instances under their control are performing. It forms a key part of DevOp techniques, driving infrastructure transparency and measuring the impact of changes, both prior to the change and after it has taken place.
There are many tools that are available for performance monitoring, from comprehensive Application Performance Monitoring (APM) tools through to focused monitoring for particular applications. We'll be covering these throughout the book; however, some of the best tools for basic server monitoring are already available with the operating system. Like most command-line tools, the performance monitoring tools that ...
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