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Old 02-12-2017, 09:21 PM   #1
willinit
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Registered: Jun 2013
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Xen VM Login Access Reset or Alternate Method


Iím new to managing Xen servers and currently have a container thatís experiencing issues with network connection. The VM (from what I can tell) is starting up normally but doesnít seem to have any network connectivity. Iíve attempted to access the VM by using ďxm console vmNameĒ and get a login prompt. Iíve tried a few logins that were provided to me but so far none work. Is there any way to reset the login to get into the VM? Or is there an alternate method of getting into it (from the server) in a similar manner to how Virtuozzo uses ďvzctl enter CTIDĒ? Any help is greatly appreciated.
 
Old 02-12-2017, 11:00 PM   #2
resuni
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Registered: Oct 2009
Location: Colorado, USA
Distribution: CentOS, Debian, FreeBSD
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Is this Citrix XenServer where you have access to XenCenter? If so, that's where I would start to troubleshoot the network connectivity issue.

In regards to resetting a password, I've had this happen to me before with a CentOS 6 VM. This is from memory, so I apologize for leaving out details, but here's what I did:

1. Shut down the VM.
2. Boot the VM, but interrupt the GRUB countdown and boot into runlevel 1. This should boot you into a root shell without prompting you for a password.
3. Type `passwd` and type a new password.
4. Reboot the machine normally, and try to log in using your new root password.

Here is a thread from the Citrix forums on this topic: http://discussions.citrix.com/topic/...d-to-linux-vm/

The thread instructs to shut down the VM and mount its virtual hard disk to modify /etc/shadow, but I don't remember having to do that. Again, this was a long time ago and my memory could be wrong.
 
  


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