Thanks; I guess I didn't mention that I started there.

The virsh list shows it in state running, and gluster is showing fully online and healed.  However, I cannot bring up a console of the engine VM to see why its not booting, even though it shows in running state.

In any case, the hosts and engine were running happily.  I applied the latest updates on the host, and the engine went unstable.  I thought, Ok, maybe there's an update to ovirt that also needs to be applied to the engine, so I ssh'ed in and ran yum update (never did find clear instructions on how one is supposed to maintain the engine, but I did see that listed online).  A while later, it reset and never booted again.

-JIm

On Sun, Sep 2, 2018 at 4:28 PM, Darrell Budic <budic@onholyground.com> wrote:
It’s definitely not starting, you’ll have to see if you can figure out why. A couple things to try:

- Check "virsh list" and see if it’s running, or paused for storage. (google "virsh saslpasswd2” if you need to add a user to do this with, it’s per host)
-  It’s hyper converged, so check your gluster volume for healing and/or split brains and wait/resolve those.
- check “gluster peer status” and on each host and make sure your gluster hosts are all talking. I’ve seen an upgrade screwup the firewall, easy fix is to add a rule to allow the hosts to talk to each other on your gluster network, no questions asked (-j ACCEPT, no port, etc).

Good luck!

From: Jim Kusznir <jim@palousetech.com>
Subject: [ovirt-users] Upgraded host, engine now won't boot
Date: September 1, 2018 at 8:38:12 PM CDT
To: users

Hello:

I saw that there were updates to my ovirt-4.2 3 node hyperconverged system, so I proceeded to apply them the usual way through the UI.

At one point, the hosted engine was migrated to one of the upgraded hosts, and then went "unstable" on me.  Now, the hosted engine appears to be crashed:  It gets powered up, but it never boots up to the point where it responds to pings or allows logins.  After a while, the hosted engine shows status (via console "hosted-engine --vm-status" command) "Powering Down".  It stays there for a long time.

I tried forcing a poweroff then powering it on, but again, it never gets up to where it will respond to pings.  --vm-status shows bad health, but up.

I tried running the hosted-engine --console command, but got:

[root@ovirt1 ~]# hosted-engine --console
The engine VM is running on this host
Connected to domain HostedEngine
Escape character is ^]
error: internal error: cannot find character device <null>

[root@ovirt1 ~]# 


I tried to run the hosted-engine --upgrade-appliance command, but it hangs at obtaining certificate (understandably, as the hosted-engine is not up).

How do i recover from this?  And what caused this?

--Jim
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