Reference Docs / Solaris 10 Zones & LDOMs / Solaris Packages & Patching / Solaris Troubleshooting
by Ramdev · Published June 18, 2013 · Last modified July 2, 2015
While troubleshooting some of the Live upgrade issues in my test environment, I have come across some important list of known issues which causes the Live Upgrade to fail. Even in the past, I have noticed that many Solaris folks complained about the...
Scenario: a. Create a cluster virtual server (Vserver)b. Create a flex vol Step:1 View the available Vservers in the cluster vserver show “node” Vservers are the scope where vol0 volumes exist and the node management LIFs and cluster LIFs of each node. The “admin” Vserveris the...
Linux Admin / Rhel6 Storage / VxVM Learning / VxVM Maintenance / VxVM Troubleshooting
by Yogesh Raheja · Published June 8, 2013 · Last modified July 2, 2015
I was performing Storage migrations for Linux RHEL 5.x and 6.x having VXVM. Storage have provided the Lun’s and confirmed all is okay from their end. But I was unable to get them visible on Veritas level though the same were visible at OS level....
Beginners Lessons / Career Guidance / Scripting / Unix Beginners / Vlabs
by Ramdev · Published May 17, 2013 · Last modified July 30, 2016
Regular expressions are extremely useful in extracting information from text such as code, log files, spreadsheets, or even documents. As an unix administrator we do regularly use the regex to perform various problem diagnosis , automation or remediation tasks. And it is almost impossible to imagine...
Linux Admin / Linux Disk Management / Linux LVM / Redhat Enterprise Linux 6 / Rhel6 Storage / Unix Intermediate
by Ramdev · Published April 19, 2013 · Last modified August 6, 2016
This is second post from the ISCSI administration series ( you can refer the first post here RHEL 6 – ISCSI Administration Series – Configuring ISCSI Server and Client ) . In this post, I will be showing you an hands-on exercise to expand a ISCSI LUN which is already...
Linux Admin / Redhat Enterprise Linux 6 / RHEL LDAP / Unix Experts
by Ramdev · Published March 31, 2013 · Last modified July 2, 2015
This is just a reference document for LDAP administrators who are looking for specific bugs and known issues addressed in version of RHEL6 release so far. And this just gives you the brief overview of the bug/known issue, but for the solution and work around details you...
VxVM Learning / VxVM Maintenance / VxVM Troubleshooting
by Ramdev · Published March 6, 2013 · Last modified August 22, 2015
We know that each disk under veritas volume manager is having some identification information in it’s private region, so that the disks are readily identifiable irrespective of the machine they are connected. When we place these disks under Veritas Diskgroups, the VxVM will start writing...
Unix Experts / Unix Intermediate / VCS Fundamentals / VCS Troubleshooting / Veritas Cluster Services / Video Learning / Video Posts
by Ramdev · Published February 17, 2013 · Last modified July 22, 2016
This post is all about the purpose of I/O fencing and how i/o fencing works to avoid the split brain condition?. Normally, I do spend 4 to 6 hours to post a technical article with complete details, but for this one I have spent lot more...
Beginners Lessons / Unix Beginners / Unix Experts / VCS Fundamentals / Veritas Cluster Services
by Ramdev · Published January 31, 2013 · Last modified August 6, 2016
Cluster heartbeat connections are important components of VCS cluster, to allow cluster to work as expected for fail over and failback operations. In this post i will be showing to some basic verification that helps unix admins to confirm the health status of the cluster heartbeats. Once we have the...
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