Linux ???? Apache? ???? ??
?? ??? ?? ?? ???? Apache? ????????. 2. ?? ??? ??? ?? ???? ?? ?? (? : ??, Autoindex)? ???????. 3. ?? ??? ???? ?? Apache ?? ? ?? ?? ??? ?????. 4. ??? HTTPS ? ??? TLS ??? ??; 5. ???? ??? ?????? ?? ??? ??? ?????. 6. ??? ?? ??? ? ??? ?????? (? : www-data, 644/755); 7. MOD_SECURIT ? MOD_EVASIVE? ????? ? ?? ? DDO? ?????. 8. ????? ?? ? ????? ????? ????? ??? ??????. ??? ??? Apache ??? ?? ????? ???? ?? ??? ?? ? ? ????.
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Kubernetes (K8S)? ???? ?? ??? ??????
kubernetessolvesthechallengsofmanagingContainerizedApplicationScaleAutomatingDeployment, Scaling ? Operations.1) iteliminatesManualContainerManagementBellingFailures, Scaling, and WorkloadDiputribution.2) ItensuresConsentApplicatio
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Linux ??? ?? ? ??? ??
LinuxefficiallySmemoryByCachingFiles ? Buffers, sohigh "MemoryIsnormalif"?? ??? "MemoryIsSollity.2.swaphelpspreventCrashesOnlow-ramsystemsOringspikesbutshouldBelimitedonSystemswithamplerAmorsSDStoaVoidPerformancedGeg
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'modProbe'? Linux?? ?? ??? ???? ??
ModProbe? Linux? ?? ?????. ?? ????, ?? ? ????? ?? ?????. ?? ???? ???? ?? ? ? ????. 1. ?? SudomodProbemoDule_name ??? ???? ?????????. ?? ??, SudomodProbenfs? ???? NFS ? SUNRPC? ?? ?????????. 2. SudomodProbe-rmodule_name? ???? ??? ??????. ?? ??, SudomodProbe-RNFS? ??? ???? ?? ?? NFS ? ???? ?? ?? ??? ?????. 3. LSMOD | GrepModule_Name? ?? ??? ?????????? ???? ModInfomodulu? ??????.
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Linux ?? ???? ??? ?? ?? ???
Linux ???? ??? ???? ?? ????? netif_rx ()/napi? ?? SoftNet_Data ?? ?????. 2.NET_RX_ACTION ()? EBPF ???? ???? IP_RCV ()? ?? ???? ??? ???? ?????. 3. IP ?? ?? ? ??? ?? ? ??? ?? ???? ?????. 4. TCP/UDP? ?? ???? ?? ?? ????? ???? RMEM_MAX? UDP ?? ??? ??? ??? ????. ? ????? ???? ?? ??? ???? ??? ??? ??? ? ? ???, ?? ?? ??? ??? ?????.
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Linux?? ??? SSH ??? ???? ??
installAnableShserHseringPackagemanagerSlikeAptordnf, whenstartAndVerifyTheService.2.HardenSshConfigurationChangingTheDefaultPortto2222, DisablingRootloginwithfermitrootloginno, AllowingSpecificusviaallowUsers, disablingsappassincatio
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Linux ?? ??? ?? : Ext4 vs. BTRFS ? XFS
ext4isbestforgeneraldesktoporlaptopuseandenvendentsrequiringmaxumStability, reliabilityandsimplicitybutlackingmodernfeatureslikesnapshotsorchecksums.2.btrfsisidealforsystemsneedingsnapshots, rollbacks, and dataintegeature, ?????
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?? ?? ? ?????? Linux ??
LinuxisApracticalDailyDriverforproductivity; 1. chooseadistrolikeubuntuforbeginnersorpop!
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Linux ??? ? ?? ?? ???
LinuxUserAndgroupManagementErsuresProperAcccesccesccescontmorganizationthroughUserAccountsandgroupMemberships.2.usershaveUniqueUidsAndarizedArizedAsregularUserSorTherootUser (UID0)
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Linux?? ?? ???? ?? ?? ??
CheckSystemAnapplicationLogsUsingJournalCTL, Application-SpecificLogfiles ? DeskTopenVironmentLogStoEndifyErrorMessages; 2.usedMesgTodetEctKernel-levelissuesKINGOSSORCESTEMETINTINGESTEMETINTINGOLSTESTEMETINGFAULTS; 3.RUNTHEAPPROMTERMANILTOCAPTUREREARCAPTERERORO
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`sysctl`? ??? Linux ?? ??
SYSCTL? ???? ?? ?? ??? ???? Linux ??? ??? ????? ? ?????. ?? ????, ??? ? ?? ?? ?? ??? ????? ???? ?? ????? ??? ????? ????. 1. SyscTl? ?? ?? ?? : SysCTL? ????/proc/sys ???? ?? ?? ??? ??? ???? sudosysctlnet.core.rmem_max = 16777216? ?? ??? ????? ????, ?? ??? /etc/sysctl.conf ?? /etsctl.d/ ? executing sudoSctl.d/ to the sudoSctl.d/? ???????. 2. ???? ?? ?? : ???? ?? ????? ?? TCP ??? ????? (? : net.core.rmem_m.
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Linux ???? ?? CPU ??? ?? ?????
USETOP, HTOP, ORPSAUX--SORT =-%CPU | HEAD-10TOINDIFYHIGH-CPUPROCESSESBYPID, COMMAND, andUSER.2.CHECKSYSTEMLOADWITHUMEANDCOMPARE loadaveragetocpucorecountusingnproctodetermineifcpucontentionExists.3.analyzecpuuseGetypeswithvmstat15 (us, sy, id, wa) andusempst
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???? Linux ??? ??????? ??? ???
installRequiredToolSusingsudoaptinstallbuild-endentibncurses devbisonflexlibssl-devlibelf-dev.2.downloadkernelsourcefromk ernel.orgorviagitclone.3.copycurrentconfigwithcp/boot/config-$ (uname-r) .configandrunmakeolddefconfig.4.optionallyCustomizeWit
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Linux ???? ?? ?? : Gnome vs Kde
gnomeprioritizessimplicityandminim ismentwithaclean, onoveratedInterfacecenteredAroundTheActivitiesView, whilekdeplasmaemphasizesflexibilityandcontrol, VisexTensiveCustomizationsandsandbehavior.2.gnometypalityS800MB – 1.2gbramatidleandhasi
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