The UNIX way.

Around the clock, across the globe. By Vladimir Legeza

Archive for the ‘Linux’ Category

Identify compatible controller driver on Solaris.

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Our task for today is to identify preinstalled Ethernet controller and find an appropriate device diver.

Any controller can be identified by its vendor and device ID’s.

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Written by Vladimir Legeza

February 17, 2013 at 5:55 pm

Update OS on hundreds of servers.

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Once I was asked about:
What would I do in case if I will need to update an OS on many, several hundreds for instance, servers without turning off the entire cluster?

And at that time I suggested a several ideas, nothing special, spontaneously, just in theory. Today I would like to share with you my recent practical experience in this area. Please read my and leave your comments and questions.

The first implementation was deployed few days ago and this is how it was done.

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Written by Vladimir Legeza

July 13, 2012 at 10:09 am

Load Balance without dedicated equipment.

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A short video about how to use CARP (BSD) and ClusterIP (Linux) for balancing work load between a number of servers.


Written by Vladimir Legeza

December 13, 2010 at 8:52 am

Posted in BSD, CARP, Linux, Load Balance, Video