Category: Work related


When NFS4 mount as nobody:nobody

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Posted in categories: Computer Tips, Work related

The rpc.idmapd malfunctioned. Cure: service rpcidmapd restart Work in: RHEL6 Also, check /var/log/message of the client to see which domain it expects. If you see line as rpc.idmapd[10199]: nss_getpwnam: name ‘user@domain’ does not map into domain ‘some_domain’ you’d go to the server and add line Domain = some_domain under the [General] section of /etc/idmapd.conf and […]

Upgrade RHEL5 to RHEL6

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Redhat always recommends to reinstall from scratch for a major version upgrade of its RHEL system. However, if you have a highly customized system with plenty third party softwares and non-standard settings, even if you have a full record of all customer settings, it will still be a big job, days, and aftermath to have […]

upgrade RHEL5 to RHEL6

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By adding in “upgradeany” after the RHEL6 installation CD/DVD’s GRUB interface, it allowed to do the upgrading. (Press TAB, and add on upgradeany after initre=initrd.img) However, it failed on package kde-filesystem. To resolve this, press Ctrl-Alt-F2, it will bring you into a shell of the installation environment. From here, you can try $ cd /mnt/source/Packages […]

Install NVIDIA driver to RHEL6

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$ setsebool -P allow_execstack on $ nano /etc/modprobe.d/nvidia-installer-disable-nouveau.conf and put in blacklist nouveau options nouveau modeset=0 $ nano /boot/grub/grub.conf and append nomodeset rdblacklist=nouveau to the kernel line $ nano /etc/inittab change id:5:initdefault: to id:3:initdefault: $ shutdown -r now After reboot: $ sh NVIDIA-Linux-x86_64-xxx.xx.xx.run It will install normally. $ nano /etc/inittab change id:3:initdefault: to id:5:initdefault: $ […]

Check RAM slot in Linux using dmidecode

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# dmidecode can see the server chasing information such as server tag, server model, product model and more… # dmidecode -t -17 | grep Size to can view the RAM size that been installed and the slot not yet installed RAM. To check the maximum RAM capacity can installed.. # dmidecode -t 16 # dmidecode […]

Reset Local Group Policy to Default in Windows XP

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Posted in categories: Computer Tips, 网文备份

Note: This process is applicable foe only stand alone computers. Steps 1.Login through theAd m in istrator account. 2.Delete the%Systemroot %\System32\Gro upPo lic y folder. 3.Now, Click Start, click Run, typecmd, and then press ENTER. 4.In Command Prompt type the following command, and then press ENTER: gpupdate /Force Note: It will forcefully apply the default […]

xorg.conf for RHEL dual monitor

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http://hpclab.blogspot.com/2007/11/rhel-dual-monitor.html RHEL dual monitor Dual monitor test on RHEL 4 Video card nVidia 128MB PCIe x16 nVidia Quadro NVS 285, Dual DVI or Dual VGA capable Monitors Two monitors have different resolution each other; 1)DELL 2007FPW, 1600×1200 2)DELL 1707FPVt, 1280×1024 Test methods There are two different mode for utilizing 2 monitors on Linux. Both of […]

up2dateErrors.SSLCertificateVerifyFailedError()

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For RHEL, when you are using local repo, like your enterprise server, if you try to get the license through https, you may get the error in the title. If you search the internet, it always tells you that you need to synchronize the time. However, for most the case, the fact is that your […]