Red Hat LINUX VIRTUAL SERVER 4.7 - ADMINISTRATION Spécifications télécharger pdf (Page 12)

Installing and Configuring Linux Guest Operating Systems

\docroot\vci\guestAgent\.Forexample,ifUpdateManagerwasinstalledinC:\Program

Files\VMware\Infrastructure\Update Manager,theGuestAgentinstallersareatC:\Program

Files\VMware\Infrastructure\Update Manager\docroot\vci\guestAgent\.TheGuestAgent

requiresnouserinputsothattheinstallationcompletessilently.

InLinux,installtheVMware-VCIGuestAgent-Linux.rpmfilebyissuingthefollowingcommand:

rpm -ivh VMware-VCIGuestAgent-Linux.rpm

TheGuestAgentmonitorschangestotheguestoperatingsystem’sRPMpackagedatabase.Wheneverthat

databaseischanged,theGuestAgentreportstheRPMpackagedatabasecontentstoUpdateManagerserver.

Ifthevirtualmachineisonlineatthetimeofthescan,theGuestAgentreportsthecurrentpackageinformation



duringthescan.

Scanning a Linux guest operating system

Duringascanningoperation,UpdateManagercomparesaguestoperatingsystem’spackagedatabase

contentsagainstapredefinedbaselineofpatches.Specifically,theUpdateManagerGuestAgentmonitors

changestotheguestoperatingsystem’sRPMpackagedatabase.Wheneverthatdatabaseischanged,theGuest

AgentreportstheRPMpackagedatabasecontentsto

theUpdateManagerserver.Ifthevirtualmachineis

poweredonatthetimeofthescan,theGuestAgentimmediatelyreportsthecurrentpackageinformation

duringthescan.ThescanresultindicateswhethertheLinuxguestoperatingsystemiscompliantor

noncomplianttothebaseline.Fornoncompliantoperatingsystems,

thescanindicatesthespecificpatchesthat

aremissing.YoucanremediatethesemissingpatchesintheLinuxguestoperatingsystembyinvokingeither

thesoftwareupdaterutilityortheup2dateutilityfoundinmostLinuxdistributions.Theseutilitiesenableyou

todownloadandinstallspecificpatchpackages.

Linux Time Synchronization Recommendations

Therecommendationsbelowincludebestpracticesontheparticularkernelcommandlineoptionstousefor

specificLinuxoperatingsystems.Thissectionalsoprovidesadescriptionoftherecommendedsettingsand

usageforNTPtimesynchronization,configurationofVMwareToolstimesynchronization,andvirtual

hardwareclockconfigurationtoachievebesttimekeeping

results.Formoredetails,seeVMwareknowledge

basearticle1006427“TimekeepingbestpracticesforLinux”andthepaper“TimekeepinginVMwareVirtual

Machines.”Forlinks,see“Resources”onpage 19.

Tables4and5showalistingofcommonLinuxguestoperatingsystemsandgiveskernelparametersrequired

forbettertimekeeping.

TheNotescolumnindicateswhetherthatguestoperatingsystemisrecommendedor

ifyoushouldavoidusingitfortime‐sensitivevirtualmachines.Inallothercases,theguestoperatingsystem

hasacceptabletimekeepingperformance.

WhenbothSMPandUPkernelsareavailable,theymustbeusedinvirtualmachinesconfigured

withthe

correspondingvirtualhardware—multipleprocessorsforanSMPkernelorasingleprocessorforaUP

kernel—otherwisethemismatchmaycausetimetodrift.

Editing Kernel Configuration

Kernelcommandlineparametersarespecifiedinthe/etc/lilo.confor/boot/grub/grub.conffile,

dependingonyourchoiceofbootloader.

ForLILO,putthekernelcommandlineparametersattheendoftheappendline.Forexample,iftheappend

linelookslike:

append="resume=/dev/hda6 splash=silent"

andyouwanttoaddclock=pmtmr divider=10,theupdatedtextis:

append="resume=/dev/hda6 splash=silent clock=pmtmr divider=10"

Remembertorun/sbin/liloaftereditinglilo.conf,sothatyoureditstakeeffect.

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Red Hat LINUX VIRTUAL SERVER 4.7 - ADMINISTRATION Spécifications Page 12

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