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> Reinstalling remotely
 Posted: Sep 10 2016, 03:01 PM
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SLF Newbie

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We have a distributed compute cluster at our university consisting of about 9 nodes. We also have a gateway node to access the nodes.

I've been tasked with upgrading this system from SL5 to the latest release (SL 7). From my understanding we need to perform a fresh install. What are the best steps to achieve this? Is it possible to do this via ssh (i.e. upgrade one node from another node?).

I have limited access to the server room so it would be ideal to not have to physically go there.

We've already backed up all the data so no worries there.

Some initial thoughts on the process:

1) ssh into the gateway node
2) zero out the partition of the drive with the OS on it. We have the /dev/sda; /dev/sda1; /dev/sda2; /dev/sda3 etc)

We have all user accounts and data on a NFS that will hopefully stay in tact throughout the process.

Any ideas on how to approach this? This is my first time dabbling in this sort of thing. Any help would be MUCH appreciated.

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