aix 5l v5.3 administration学习心得

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1、AIX5Lv5.3Administration心得筆記ContentsUnit1.Introduction1Unit2.InstallationandMaintenance2Unit3.ManagementTools4Unit4.SystemStartupandShutdown5Unit5.Devices7Unit6.Storage8Unit7.Performancetools12Unit8.BackupandRestore14Unit9.SecurityandUserAdministration15Unit10.Sche

2、duling19Unit11.PrintersandQueues20Unit12.NetworkingOverview21Unit13.ProblemDetermination23Appendix.ShellScript24Unit1.Introduction△POWER:PerformanceOptimizedWithEnhancedRisc△RISC:ReducedInstructionSetComputing(implementthemostusedinstructionsinhardware)△32bit→64b

3、itAIX4.3開始support64bitAP，但kernel還是32bit，到AIX5.1才是真正的64bitkernel。#bootinfo-p:查架構是否為chrp#bootinfo-y:查H/Wbitaddress#bootinfo-k:查AIX的kernel是幾bit#oslevel:查OS版本Note:CHRP:CommonHardwareReferencePlatform，AIX5.2後只supportCHRParchitecture.△CDE圖型介面#lssrc-sdtsrc查CDE圖形介面是否有acti

4、ve△SMPandClusterSMP:SymmetricMulti-Processor，多CPU共用memory,I/OCluster:每個CPU有自己的memory,I/O△LPARAIX5.1開始supportLPARAIX5.2開始supportDLPAR△系統登入方式最好不要允許可以直接用root登入，讓所有account都先用username登入，具有admin權限者再su成root，因為任何從其它usernamesu成root的動作都會被記錄在/var/adm/sulog中，這樣就不會分不清到底是那個root

5、做了什麼事。搭配$HOME/.sh_history這個檔，裡面有記錄最近該user執行過的指令#su[-][username]不加"-"會繼承原username的環境變數有加"-"會改用新username的環境變數24AIX5Lv5.3Administration心得筆記▲SystemAvailability(RedbookChap2)Hardwarecomponents：CPU,Memory,Harddisk,Network,Power,…Softwarecomponents：MirroringofLV,VGQuorum

6、,Bootlist,…▲RAID(RedundantArrayofIndependentDisks)(RAID可用software或hardware實作，後者效能好)RAID0Striping.NoredundancyRAID1Mirroring.RAID5StripingwithparityRAID10RAID0+RAID1Unit2.InstallationandMaintenance△Basicdiskrequirements:AIX5Lv5.3requiresatleast2.2GBdiskspaceforBOS

7、.△Installationoptions:1.NewandCompleteOverwrite2.Migration:會保留下大部分的資料與設定，除了/tmp3.Preservation:rootvg會留下，但/usr,/tmp,/var,/下的files都會被overwrite。(…IBM還真是會命名，這樣還能叫preservation嗎)△TCB(TrustedComputingBase)有點像是系統安裝時的安全機制設定，設定trustedpath,trustedshell,trustedprocesses,andsy

8、stem-integritychecking.Thetcbckcommandauditsthesecuritystateofthesystembycheckingtheinstallationofthefilesdefinedinthe/etc/security/sysck.cfgfile(thesys