2021年10月19日星期二

Win 10 cannot print to SMB workgroup sharing printer(Any brand name)

Due to Windows 10 update KB5006670 cause/change the security setting/level and make the printer sharing function affected. Please remove the windows update KB5006670 on client PC for temporary fix.

The previous update in September also encounter similar problem.  The KB5005565 & KB5005566 will cause the printer sharing function affected.

2021年5月6日星期四

Dell Centos Linux Raid driver install & monitor

 *** Download the driver

https://www.dell.com/support/home/zh-hk/drivers/driversdetails?driverid=f48c2


*** Use Gnu-zip or other unzip utility to open the file and find the Linux directory. you can find the rpm file in it. Something like that "perccli-007.0127.0000.0000-1.noarch.rpm" without quote.

*** Put the file in the root home directory and then use the command to install.

rpm -ivh perccli-007.0127.0000.0000-1.noarch.rpm

*** or upgrade 

rpm -Uvh perccli-007.0127.0000.0000-1.noarch.rpm

*** Use the command to show the Raid Status

 /opt/MegaRAID/perccli/perccli64 /c0/eall/sall show




IBM/Lenovo Server Centos Linux MegaRaid install & show info

*** downlaod 

https://docs.broadcom.com/docs-and-downloads/raid-controllers/raid-controllers-common-files/8-07-14_MegaCLI.zip


*** unzip the files

unzip 8-07-14_MegaCLI.zip


*** if you don't have unzip, use this command to install

yum install unzip


*** install the driver, change to the Linux directory and run this commnad

sudo yum install MegaCli-8.07.14-1.noarch.rpm


*** run the command and get help

/opt/MegaRAID/MegaCli/MegaCli64 -h


*** check raid simple status

/opt/MegaRAID/MegaCli/MegaCli64 -ShowSummary -aALL


HP Centos Linux Raid setup using HP management software respository

 Reference https://downloads.linux.hpe.com/SDR/project/mcp/


*** Create /etc/yum.repos.d/mcp.repo


vi /etc/yum.repos.d/mcp.repo

[mcp]

name=Management Component Pack

baseurl=http://downloads.linux.hpe.com/repo/mcp/dist/dist_ver/arch/project_ver

enabled=1

gpgcheck=0

gpgkey=file:///etc/pki/rpm-gpg/GPG-KEY-mcp


Where:

   dist          centos, fedora, opensuse, oracle, asianux

   dist_ver      Browse repo to identify supported distribution versions

   arch          i386, x86_64

   project_ver   current, 12.05, 11.30, 11.21, 11.05, 10.62, 10.50, 10.40, 10.20


Example file for Centos 6.9Server x86_64 current

[mcp]

name=Management Component Pack

baseurl=http://downloads.linux.hpe.com/repo/mcp/CentOS/6.9Server/x86_64/current/

enabled=1

gpgcheck=0

gpgkey=file:///etc/pki/rpm-gpg/GPG-KEY-mcp


*** Get keys from HP site

rpm --import https://downloads.linux.hpe.com/SDR/hpPublicKey2048.pub

rpm --import https://downloads.linux.hpe.com/SDR/hpPublicKey2048_key1.pub

rpm --import https://downloads.linux.hpe.com/SDR/hpePublicKey2048_key1.pub


*** use this command to check and view the package available 

yum --disablerepo="*" --enablerepo="mcp" list available


*** if you want to install ssacli and which is available then use this command as below 

yum --disablerepo="*" --enablerepo="mcp" install ssacli


*** done

2021年5月5日星期三

Yum update centos 6.x after EOL

***Backup the original file

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo-backup


*** Create the yum upgrade CentOS-Base.repo file that use vault.centos.org or mirrors.sohu.com


vi /etc/yum.repos.d/CentOS-Base.repo

[base]

name=CentOS-6

failovermethod=priority

baseurl=https://vault.centos.org/6.9/os/x86_64/

#baseurl=http://mirrors.sohu.com/centos/6.9/os/x86_64/

gpgcheck=0


*** Then clean up yum cache & rebuild again

yum clean all & yum makecache


*** Try yum upgrade again

yum upgrade



*** God bless you.

2021年1月29日星期五

Windows Force Time Sync with time server


change registry entries 

MaxNegPhaseCorrection and MaxPosPhaseCorrection 

in 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config to maximum (ffffffff)

to avoid 'time change was too big'

Then create a batch and use admin right to run this command as below(1st line wait 10 sec)

@ping 127.0.0.1 -n 10 -w 1000 > nul

 net start w32time

w32tm /resync


Thanks!