Tutorial search

All categories3DS MaxAccessAdobe AcrobatAdobe AuditionAdobe FlexAdobe PremiereAfter EffectsArchiCADArchitectural DesktopASPASP.NETAutoCADAutodeskBlender 3DBodyPaintBryce 3DBuzzsawC++CATIACinema 4DCivil 3DColdfusionCorel DrawCSSDelphiDreamweaverDWF ViewerExcelFireworksFlashFreehandFrontpageFruity LoopsGimpGoLiveHTMLIllustratorImage ReadyInDesignIntelliCADInventorJavaJavaScriptLand DesktopLightwave 3DLinuxMac OS XMapMaya 3DMechanical DesktopMicroStationMySQLOutlookPagemakerPaint ShopPainterPhotographyPhotoshopPHPPoserPowerPointPro/ENGINEERPythonRaster DesignRevitRhino 3DRuby on RailsSEOSolid EdgeSolidWorksSwift 3DSwish MaxTerragenValve EditorVectorWorksVisual BasicVIZWeb DesignWindowsWordXML

Most AIX administrators understand the virtualization features available to them on their System p platform through PowerVM, which is also available on the System p for Linux. What about the other UNIX hardware platforms? find out what HP-UX, Solaris have to offer and how do some of their features compare to PowerVM.

Brief explanation about some common Linux/UNIX admin commands

Are you broadening your skills as a Linux systems administrator into various flavors of UNIX? Get a rundown of the differences and similarities between Red Hat Enterprise Linux and AIX so that you can perform day-to-day activities with ease.

Monitoring system logs or the status of a command that produces file or directory output are common tasks for systems administrators. Learn how to use two popular open source tools simplify these activities for modern systems administrators: the multitail and watch commands.

As a Linux administrator, you may encounter rootfs errors like cannot mount rootfs and kernel panic when you try to reboot a server after attaching volumes from external storage or even after installing a new Linux operating system. This article outlines the Linux booting process on an x86 platform, shows why this problem happens, and offers four tips to avoid it or fix it. This is a straightforward approach to finding a quick solution that can help you avoid a lot of grief.

Benjamin Franklin: author and printer, satirist, political theorist, politician, scientist, inventor, civic activist, statesman, diplomat, Freemason Grand Master... and would-be UNIX systems administrator? Yes, 200 years or so before the birth of UNIX, Franklin scribed sage advice to keep systems humming. Here are 10 of Franklin's more notable tips and how they can be applied to advanced system administraion.

Welcome to the next step in studying for the Linux certification exam 102. In this tutorial (the sixth in a series of nine tutorials on exam 102 topics), Ian Shields introduces you to administrative tasks. By the end of this tutorial, you will know how to manage users and groups, set user profiles and environments, use log files, schedule jobs, back up your data, and maintain the system time.

Welcome to the next step in studying for the Linux certification exams. This tutorial series serves as a comprehensive study guide so you can take the exams with confidence. And even if you're not preparing for Linux certification at this time, this series helps you build fundamental skills on Linux systems administration.

This article provides developers and administrators with a listing of the developerWorks articles that cover configuration, administration, interoperability, Kerberized filesystems (NFS V4), and different Kerberized login modules based on the IBM AIX Network Authentication Service (NAS).

Become an expert administrator of a reliable Kerberos environment with high availability, involving multiple Kerberos master-slave Key Distribution Centers (KDC) on AIX and many clients. Part 2 of this series covers how to upgrade the slave KDC to perform as a master KDC.

Nagios is a very powerful platform because it is easy to extend. The previous chapters talked about check command plugins and how they can be used to check any host or service that your company might be using. Another great feature that Nagios offers is the ability for third-party software or other Nagios instances to report information on the status of services or hosts. This way, Nagios does not need to schedule and run checks by itself, but other applications can report information as it is available to them. This means that your applications can send problem reports directly to Nagios, instead of just logging them. In this way, your applications can benefi t from powerful notifi cation systems as well as dependency tracking. This mechanism can also be used to receive failure notifi cations from other services or machines—for example, SNMP (Simple Network Management Protocol) traps. This is described in more detail in Chapter 9. Nagios also offers a tool for sending passive check results for hosts and services over a network. It is called NSCA (Nagios Service Check Acceptor). It can be used to send results from one Nagios instance to another. It can also be used by third-party applications running on different machines to send passive check results to a central Nagios server. This mechanism includes password protection, along with encryption, to prevent injection of false results in to Nagios. In this way, NSCA communication sent over Internet is more secure.

At some point in their careers, most systems administrators need to interact with an LDAP server. This article shows how LDAP can be used for Apache authentication, as well as how to perform CRUD, or Create, Read, Update, and Delete operations on an OpenLDAP database, using the Python module python-ldap.

Managing Linux clusters requires a unique set of skills that are not usually found among the single-system or small-networked-systems IT administrators. In this article, the authors peer into the minds of the laziest Linux admins on Earth and divulge their secrets for mastering the techniques of scale-out management.

This article explores the virtualization features available to administrators across several UNIX hardware platforms. Discover what they have to offer and how their features compare to PowerVM.

Learn how to back up your important Kerberos data as a part of your business continuity plan and other backup processes. This article educates the Kerberos administrators on what data to consider for backup plans.