[ovirt-users] HEVM root reset?

[Simone Tiraboschi]

Hi,
the simplest approach is:

hosted-engine --set-maintenance --mode=global
hosted-engine --vm-shutdown
# wait for it
hosted-engine --vm-start-paused
hosted-engine --add-console-password
# open a vnc or spice console pointing to the VM
# when ready
virsh -c qemu://$(hostname)/system resume HostedEngine
# quickly stop the boot process from the vnc or spice console
# force root password as for a regular el7 system
# shutdown the engine VM
hosted-engine --set-maintenance --mode=none



On Sat, Oct 28, 2017 at 11:25 PM, Chas Ecomm <chashock at speakfree.net> wrote:

> TIA for any guidance you can give me here, I’m in a bit of a pickle and
> have spent many hours reading many posts and blogs that don’t seem to get
> me where I need to be, and despite my gut feeling that someone has had to
> have dealt with this somewhere else, my google-fu is failing me in finding
> anyone who has dealt with this particular problem.
>
>
>
> My issue:
>
>
>
> I’ve inherited a 4.1 hosted-engine setup.  This is for a non-profit, so
> the previous consultant did what she could to save capital expense by using
> older gear and oVirt rather than VMware/Hyper-V and newer equipment.  For
> the most part it has worked quite well as I understand it.  This particular
> setup has gone from 3.5 with a standalone engine to 4.1 with a hosted
> engine, in case that matters.
>
>
>
> The VMs hosted on the 2 clusters associated with this engine are currently
> working fine, but I am trying to get into the hosted-engine VM, and either
> there was a problem with the root password during setup and the
> hosted-engine-setup script didn’t catch it or I’ve been given a bad
> password.  The previous admin didn’t setup any alternative users, which is
> a major no-no in my book, and so I’m trying to do that – but I can’t login
> to the VM.  I can log into the portal and manage the hosts, storage, VMs,
> etc., just not the HEVM.  As I understand it, even if I could set aside my
> need for alternate users, when it comes time to upgrade I will need access
> to the HEVM, so I have to solve this at some point.
>
>
>
> If this were a physical machine, I’d reboot in single user mode and work
> at things from there, but it’s not, and I’ve not found a good guide to get
> to the engine console to put it into single user mode.  I’ve found lots
> (and lots, and lots) of links on the oVirt docs site regarding hosted
> engine setups that simply don’t exist as pages anymore and others that
> don’t address this issue, as well as a couple of links on the RedHat site
> that made me think I could connect via ssh to the host running the VM, and
> do some sort of X forwarding, but I haven’t come anywhere close to success
> with that, and since I can’t log into the VM, I’m not sure how that would
> work anyway.  I’ve always struggled with X forwarding, too, so that doesn’t
> help, I’m sure.
>
>
>
> I read a few posts from what look like the early days of the hosted-engine
> OVA implying you could launch a console from the management portal and
> maybe try to reboot and set single user mode there, but they all
> dead-ended.  Also, I may be confused on how the hosted engine works (I find
> this much more confusing than either VMware or Hyper-V), but if I’m
> connected to the console via the oVirt management portal and I reboot the
> VM to try and get into single user mode, wouldn’t I lose my connection and
> still not be able to get into single user mode?
>
>
>
> I can connect via hosted-engine –console, but that asks me for the root
> password, which of course I don’t have.
>
>
>
> Am I just doomed to have to rebuild this whole set of servers from scratch
> or is there some way I could either re-run hosted-engine –deploy so I can
> set the root password and not lose my current config; or alternatively is
> there a way to get the VM into single user mode and accessible so I can use
> normal Linux practices for a lost root password?
>
>
>
> Thanks for listening and for any help you can possibly give.  I’m sure
> there’s some simple thing that I’ve overlooked, but after hours and hours
> of trying to solve this one on my own, I have to admit the need for help.
>
>
>
> Thank you!!!!
>
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>
>
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