Root Password is Unknown

Contents

  1. 1 Overview
  2. 2 Status
  3. 3 References
  4. 4 Procedure
    1. 4.1 Shut OVM_EM12R2 VM Down
    2. 4.2 Start OVM_EM12R2 VM
    3. 4.3 Change Boot Parameters
    4. 4.4 Connect Using VNCViewer
    5. 4.5 Reboot the OVM_EM12R2 VM

Overview

After I had created the Cloud Control VM ( Manually Create Cloud Control VM from Appliance ), I found that I did not know the passwords for the system accounts— root , and oracle . There are none given in the README file for the VM instructions.

Status

RESOLVED .

References

Procedure

I used the procedure given in How to Reset "root" Password with GRUB on Enterprise Linux [ID 431260.1] .

Shut OVM_EM12R2 VM Down

I used the following command on VICTORIA to shut the VM machine (OVM_EM12R2) down:

xm shutdown OVM_EM12R2

After a few seconds, the following message appeared on the console: 

System halted.

Start OVM_EM12R2 VM

I then started the VM machine with the following command:

xm create vm.cfg -c

Change Boot Parameters

When the list of kernels appeared in the console window, I press the a key. Then I changed the following line: 

kernel /vmlinuz-2.6.32-200.13.1.el5uek ro root=LABEL=/ numa=off

To the following by appending a 1 : 

kernel /vmlinuz-2.6.32-200.13.1.el5uek ro root=LABEL=/ numa=off 1

The boot continued.

Connect Using VNCViewer

I then used xtightvncviewer running under Ubunutu to enter single user mode (which does not require a password) to change the passwords for the following user:

  • root
  • oracle

Reboot the OVM_EM12R2 VM

I then rebooted the VM machine:

reboot