Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Solaris Troubleshooting : System rebooted … is it Fatal Reset or Red State Exception ?

The unexpected reboots are most often caused by hardware faults and reported by the system as a fatal reset or a red state exception. When errors like these occur, the OS  is abruptly interrupted and can’t continue to log error messages in /var/adm/messages or generate a...

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Procedure for disk replacement under veritas volume manager using vxdiskadm utility.

Procedure for disk replacement under veritas volume manager using vxdiskadm utility. Herein I am trying to present disk replacement under VXVM using vxdiskadm utility. Though the same can be done from command line (which is preferable as well). I will present the same in my coming...

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Storage : Expansion of solaris filesystem after expanding the corresponding LUN from storage.

Procedure to expand default partition table using native OS utilities: Note: Because the partition table will be removed and rewritten, the following procedure is appropriate ONLY when the file system on the disk has been created on slice 2 and spans the entire Symmetrix volume. The following...

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Solaris Troubleshooting : map the Physical Device(s) from an EMC PowerPath Pseudo Device seen in “format” output

Under normal circumstances, an administrator could use the EMC PowerPath commands to obtain this information (ie. the powermt command). Sometimes this output is not always available, especially since Sun Explorer script does not collect it.

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Day in SA Life : Working Remotely for an hardware issue

Below is  Sample production environment : 1. Server Infrastructure was located in Two different Data center ( DC ).  One DC is for Production Servers and another one for Disaster Recovery( DR) servers 2. System Administrators and Application Developers are sitting in different countries and working remotely....

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HBA replacement in Solaris.

HBA replacement in Solaris. HBA replacement is one of the major and tricky task in Solaris as it involves the understanding of WWN. Both Old WWN (for faulty HBA) and New WWN (for newly installed HBA) are required for zoning and masking to map the HBA paths from...

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With more than 350+ system administration posts,  gurkulindia.com turned as  one of the best knowledge base for most of the system administrators all over the world.      On our way to improve this site as more perfect  learning site  for system administration, we would like to listen your...

 
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