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Well i'll suggest if its a production server or people are accessing it for UAT purpose then it will break the active connections, the moment cable is unplugged.
if its a standalone machine & using network as per the need of the user than first stop the network service & then do the cable change activity
I'm building a cluster, and had VMware on the head node, but since it has its own DHCP, it didn't work very well with the DHCP server already on the head node's private interface.I uninstalled VMware but am getting this error when I try to image the nodes:
PXE-E32 : TFTP open timeout
No, there aren't any other users on this cluster yet.
As u said that u r building a cluster, so in cluster have u made a service for IP including for SAN luns for failover.
cos normally in cluster u will have virtual IP & u make a service for it and u set a priority of the service for respective nodes.
SAN luns? What's that?
I also haven't set any priority for of the service for the respective nodes.
TFTP worked fine when I added the first node, (before VMware came into the picture) and now it's not. Could it be a hardware problem?
Okay, I'm a postgrad chemistry student and rather clueless about computers. We want to do computational chemistry faster, so I have been given the task (as a project) to set up a cluster. I have used fedora 8 and OSCAR 5.1rc. I have a server node, and added one normal node. Everything went well, except that there were problems with finishing the OSCAR installation. (Torque and maui had to be helped manually)
But we have a small partition on the server node for XP, so I loaded VMware. Then people helped me to fix the torque and maui problems. I wanted to add the other nodes, but when I tried imaging them using OSCAR, I got errors in the network boot process. Probably due to VMWare also having a DHCP server. Since VMware isn't a priority at present, I uninstalled it. But now if I try to image the nodes, I get this PXE-E32 : TFTP open timeout problem.
I've checked the cables and switch with the cable and port of the first node that didn't have any problems.
I have rebooted the server node, checked that the firewall is disabled, and the things mentioned earlier in the post. I have no idea how tftp works or why it doesn't work anymore. I'm just about pulling my hair out of my head, because time is running out, and it seems to be such a stupid problem. I find it interesting learning new things in Linux, but my chemistry department expects me to do some chemistry calculations on the cluster as well and at present I'm just falling into one problem after the other.
That's why there aren't any users on this cluster yet. It's not close to being finished. Hope that explains a few things...