Read e-book online Self-Service Linux(R): Mastering the Art of Problem PDF

By Mark Wilding, Dan Behman

ISBN-10: 013147751X

ISBN-13: 9780131477513

The most important think about a company's selection to compliment Linux is overcoming thesupport concerns. Adopting Linux effectively capability taking over a differentapproach to help. considering Linux is open resource, there are varied methodsto get the aid that businesses desire. This comprises deeper talents on how toinvestigate difficulties, tips to get support from the open resource neighborhood (i.e.how to invite for assistance on usenet) and the way to solve difficulties in-house withoutthe additional price of a specialist. This booklet may be an important a part of everycompany's Linux adoption plan to maintain the full expense of possession (TCO)down and enhance the ROI in their Linux process. it's also a booklet thatadvanced Linux execs working their very own Linux platforms could be capable touse to troubleshoot. This e-book supplies the workers the fundamentals they should diagnose so much difficulties that they are going to face and may cross into the nitty-gritty at the hardest difficulties. It additionally issues clients to the precise assets in order that they may possibly get aid speedy.

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Extra info for Self-Service Linux(R): Mastering the Art of Problem Determination

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Your job as a problem investigator is to find out why it can’t run as expected and solve the underlying problem. Error messages can be printed to the terminal, returned to a Web browser or logged to an error log file. A program usually uses what is most convenient and useful to the end user. 4 Technical Investigation 29 to the terminal, and a background process (one that runs without a command line) usually uses a log file. 3 shows some of the initial and most useful paths of investigation for errors.

Be detailed and avoid qualitative information. 4. Challenge assumptions until they are proven. 5. Narrow the scope of the problem. 6. Work to prove or disprove theories about the problem. The best practices listed here are particularly important for complex problems that take a long time to solve. The more complex a problem is, the more important these best practices become. Each of the best practices is covered in more detail as follows. 1 Collect the Relevant Information When the Problem Occurs Earlier in this chapter we discussed how changes can cause certain types of problems.

Application D may see this as an indication that application B is unavailable and may redirect its requests to a redundant application C (effect #3). Application E, which relies on application D and serves the end user, may experience a slowdown in performance (effect #4) since application D is no longer using the two redundant servers B and C. This in turn can cause an end user to experience the performance degradation (effect #5) and to phone up technical support (effect #6) because the performance is slower than usual.

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Self-Service Linux(R): Mastering the Art of Problem Determination by Mark Wilding, Dan Behman


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