Below procedure can be used to identify the hard disk errors in linux operating system. Execute the following command to identify the available disk configuration # /bin/more /proc/scsi/scsi Output will include all the currently available disks to the linux, and the output vary depending on...
Blog for Unix Admin / Solaris Admin / Storage Configs for Unixadmin
by Ramdev · Published July 19, 2021
If Fibre Channel devices are not present or turned off, boot errors will occur. Without corrective action, these errors will persist for every re-boot. The boot errors which are linked to this problem, can be found in the /var/adm/messages file, and are formatted as follows:
1. Grub Configurations GRUB is configured using ‘grub.cfg’, usually located under ‘/boot/grub’. This file is quite flexible, but most users will not need to write the whole thing by hand. 1.1 Simple configuration handling The program ‘grub2-mkconfig’ generates ‘grub.cfg’ upgrading a distribution, and will discover available...
The sshd daemon that comes with the Solaris 9 & 10 Operating System uses TCP (Transmission Control Protocol) Wrappers (also called “libwrap”) to control access to hosts. (Unlike other systems, Solaris 9 & 10 does not use the OpenSSH keywords “AllowHosts” and “DenyHosts” to permit or...
VCS requires you to set up a private network between the systems that form a cluster. You can use either NICs or aggregated interfaces to set up private network. You can use network switches instead of hubs. However, Sun systems assign the same MAC address to...
Blog for Unix Admin / Network Design / Solaris Networking / Solaris Performance Monitoring
by Ramdev · Published July 15, 2021
Our Unixadmin, John from xyz company, recently upgraded one of his server’s network interface card from the old one with 100MB speed to a new one with 10Gig speed , and the reason is to improve the speed for the backup of the server. After the NIC Upgrade john found that the server network...
Udev is the mechanism used to create and name the /dev device nodes corresponding to the devices that are added to the system during the booting. When a device is added or removed from the system, the kernel creates a device name in the /sys psuedo...
Veritas Administration for unixadmin / VxVM Learning / VxVM Maintenance / VxVM Troubleshooting
by Ramdev · Published July 13, 2021
Below procedure explains you about ‘ booting from an alternate boot disk’
[mlw_quizmaster quiz=27]
Veritas Administration for unixadmin / VxVM Learning / VxVM Maintenance / VxVM Troubleshooting
by Yogesh Raheja · Published July 11, 2021
Since long time I was thinking to have practical hands-on to how to recover Diskgroup in VXVM (which got faulty and we are unable to import that). But unfortunately I wont have real time outputs with me to show how that can be achieved. But here...
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