A wonderful year was gone, and the year 2011 left me with the greatest satisfaction of “learning and sharing the knowledge”. My Sincere thanks to everyone who made my year so successful and memorable. A brief summary of what we have done in year 2011...
Blog for Unix Admin / Solaris Admin / Storage Configs for Unixadmin
by Ramdev · Published December 19, 2011 · Last modified August 5, 2016
Assuming there is not a mixture of SUN and NON-SUN FC HBAs in server, (ie. all HBAs from same vendor) if one of the HBAs is down looking at other HBAs in server will tell us if HBAs in server are SUN Branded or not. These...
Blog for Unix Admin / Solaris Admin / Solaris NFS
by Ramdev · Published December 19, 2011 · Last modified August 6, 2016
Running “ls -la /” hangs, yet running “ls -la” to other root directories (i.e. ls -la /usr) does NOT hang. And the system logs ( i.e. /var/adm/messages) shows NFS related errors, even though this is NOT a true NFS client. Here are the some sample errors that...
Linux Admin / Linux Performance / Redhat Linux Kernel
by Ramdev · Published December 19, 2011 · Last modified August 6, 2016
Before we discuss about Huge pages, we should revise some of the basic concepts about Operating system memory management. Operating systems basically deals with two types of memory for its operations one is Physical memory ( actual Physical RAM) and the second is Virtual memory ( combination of Physical...
Blog for Unix Admin / Oracle cluster Fundamentals / Oracle Cluster Maintenance / Oracle Cluster Migration / Oracle CLUSTER Services / Oracle Cluster Troubleshooting / Oracle Cluster Upgrades / Solaris Admin
by Michael Varun · Published December 10, 2011
Before going to the basic understanding of the disksets let us first know the necessity for disksets in solaris there are many prime reasons people prefer for going into disksets Availability Redundancy Efficiency Availability: Disksets are more reliable under sun cluster environment but not limited to...
Blog for Unix Admin / Solaris 10 Zones & LDOMs / Solaris Admin / Solaris Troubleshooting
by Ramdev · Published December 1, 2011 · Last modified August 6, 2016
The non-global zones (or zones) facility in Solaris[TM] provides an isolated environment for running applications. The zones FAQ can be found at OpenSolaris.org. Symptoms: zone boot error zone boot failed can’t login to the zone can’t access zone zone not running
Solaris 10 Troubleshooting : Check the Integrity of libraries and critical files 11078 Reads VxVM : Resolving the Intermittent Disk errors by clearing the failing flag on a disk 5643 Reads Cloud Computing – What does it mean to System Administrators 3924 Reads Beginners Lesson...
Blog for Unix Admin / Solaris Admin / Storage Configs for Unixadmin
by Ramdev · Published November 24, 2011 · Last modified July 2, 2015
Enterprise Unix system administrators will always have two challenges, every day, to deal with … the first one is providing sufficient Computing resources for the business applications and the second one is providing sufficient storage for the business applications. We will discuss about managing computing resources( CPU...
Blog for Unix Admin / Solaris Admin / Solaris Networking / Solaris Troubleshooting
by Ramdev · Published November 16, 2011 · Last modified July 2, 2015
This post is continuation to the Sendmail Troubleshooting – 1 // ]]> Step 5. Verify the sendmail configuration. In Solaris 9 and above, sendmail uses a 2 queue paradigm structure (/var/spool/mqueue and /var/spool/clientmqueue). This is to make sendmail more secure by not giving out setuid for...
ZFS stands for “Zettabyte File System”. Zfs is a 128 bit Fs that was firstly introduced on June 2006 with Solaris 10 6/06 release. ZFS allows 256 quadrillion zettabytes of storage. Which means there would be no limit on number of filesystems and on number of...
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