Principles of Network and System Administration
Mark Burgess
Language: English
Pages: 646
ISBN: 0470868074
Format: PDF / Kindle (mobi) / ePub
- A single, comprehensive resource that responds to the high demand for specialists who can provide advice to users and handle day-to-day administration, maintenance, and support of computer systems and networks
- Author approaches both network and system administration from the perspective of the principles that do not change on a day-to-day basis
- Shows how to discover customer needs and then use that information to identify, interpret, and evaluate system and network requirements
- New coverage includes Java services and Ipv6
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is a highly subjective issue. If we aim to please one type of user, another will be disappointed. To extract maximal performance from a host, we must focus on specific issues and make particular compromises. Note that the system itself is already well adjusted to share resources: that is what a kernel is designed to do. The point of performance tuning is that what is good for one task is not necessarily good for another. Generic kernel configurations try to walk the line of being adequate
latter case, the addition or removal of a message must be accompanied by the update of index files or else the mailbox becomes corrupted. All mailbox formats are vulnerable to corruption by ad hoc editing, so users and administrators should be discouraged from attempting this. As soon as a network is involved in E-mail transmission, there are many choices to be made. Some of the basic choices involve deciding a logistic topology for the E-mail service: should we consolidate mail services to
percentage CPU used in processes: This is an experimental measure which characterizes the most CPU expensive process running on the host at a given moment. The significance of this result is not clear. It seems to have a marginally periodic behavior, but is basically inconclusive. The error bars are much larger than the variation of the average, but the magnitude of the errors increases also with the increasing average, thus, while for all intents and purposes this measure’s average must be
Administration Conference (LISA X) (USENIX Association: Berkeley, CA), page 9, 1996. [241] M. Poepping. Backup and restore for unix system. Proceedings of the Large Installation System Administration Workshop (USENIX Association: Berkeley, CA), page 10, 1987. [242] H. Pomeranz. Plod: keep track of what you are doing. Proceedings of the Seventh Systems Administration Conference (LISA VII) (USENIX Association: Berkeley, CA), page 183, 1993. [243] P. Powell and J. Mason. Lprng–an enhanced
limits specified. Care should always be taken in searching for and deleting patterns containing ‘core’. Some operating systems keep directories called core, while others have files called core.h. As long as the files are plain files with an exact name match, one is usually safe. 166 CHAPTER 5. USER MANAGEMENT 5.6.2 Quotas and limits in general In a shared environment, all users share the same machine resources. If one user is selfish that affects all of the other users. Given the
