"eth0" ethernet card was broken. It had to be replaced by a new one in a machine running RHEL v.6.3
After that ClearCase is not able to start up any more.
It seems that "eth0" ethernet address (i.e. The first ethernet card the O.S. detects) is used by ClearCase to establish the linux ClearCase "hostid" for that machine.
[There is no need to change any licenses, as the machine uses a near-by "license server", in the same LAN, to legally obtain from it a floating license].
But the problem is that ClearCase instalation in that machine has become obsolete. I thing i have two main options to sort it out:
A trivial way out is simply reinstalling ClearCase from scratch, and everything will be ok again. But i imagine there should be a more straightforward solution perhaps by changing the machine ID in some ClearCase configuration file instead or reinstalling everything ...
A second option is to use the responses from previous installation to reinstall automatically.
Can you help please which is the quickest way out ?
TIA, Javier.
Licensed software on the Linux side generally uses the MAC address of eth0. Changing the eth0 MAC address thus will cause a problem here. I personally not fond of that particular licensing system since MAC addresses can be easily changed on any system VM or real these days and only offers illusionary protection to the vendor.