When I log in to a remote CentOS 7 HOST server using Putty and perform actions with GUEST virtual machines using
virt-install, etc), I am not alerted to certain errors.
Then, when I visit the physical location of the physical HOST box and view the monitor attached to the host box, I sometimes find the screen filled with repeating error messages that were not visible to the remote Putty sessions.
For example, when I visited the physical box today, I saw that the following error message had repeated on every line of the physical screen:
kvm [nnnn] vcpu0 unhandled rdmsr
The numbers for
nnnn changed in some of the lines, and it looked as if countless pages of these errors had been lost as the screen continued to overflow.
What specific commands would need to be typed in order for these error messages to be accessible via Putty? Does any specific output need to be turned on? Or diverted into a text file? And how can these messages trigger alert in the Putty session?