[ovirt-users] Hosted engine vs. hypervisor hosts naming on hyperconverged setup

[Will Dennis]

Hi Roy,

I did not ever change the engine name… When I deployed it with ‘hosted-engine —setup’ I gave it its’ own hostname/IP, assuming it would need one that’s different from any of the virtualization hosts. So the virt hosts have names / IPs as follows:

ovirt-node-01   xxx.yyy.zzz.91
ovirt-node-02   xxx.yyy.zzz.92
ovirt-node-03   xxx.yyy.zzz.93

…and the engine VM has the hostname / IP as follows:

ovirt-engine-01   xxx.yyy.zzz.95

The engine setup log can be viewed at: http://ur1.ca/od171

I clicked on the “Data Centers” node on the left nav of webadmin, and I see that the “Default” DC (the only one I have) has a status of “Uninitialized”… Not sure how to initialize it (there’s no menu option for that on the node…)

Thanks,
Will

On Dec 27, 2015, at 1:38 PM, Roy Golan <rgolan at redhat.com<mailto:rgolan at redhat.com>> wrote:



On Sat, Dec 26, 2015 at 6:27 PM, Will Dennis <wdennis at nec-labs.com<mailto:wdennis at nec-labs.com>> wrote:
Hi all,

I have a hyperconverged setup where I have a hosted engine that runs on one of three hosts, which are named “ovirt-node-[01,02,03]” —

[root at ovirt-node-01 ~]# hosted-engine --vm-status | grep -e "Hostname" -e "Engine"
Hostname                           : ovirt-node-01
Engine status                      : {"health": "good", "vm": "up", "detail": "up"}
Hostname                           : ovirt-node-02
Engine status                      : {"reason": "vm not running on this host", "health": "bad", "vm": "down", "detail": "unknown"}
Hostname                           : ovirt-node-03
Engine status                      : {"reason": "vm not running on this host", "health": "bad", "vm": "down", "detail": "unknown”}

When I deployed the hosted engine, I gave it a separate hostname/IP, as I expected it would need it (hostname = “ovirt-engine-01”)


So when exactly did you changed the hostname?
And what did you pass to the hosted engine install as answers? perhaps share the setup log under /var/log/ovirt-hosted-engine-ha

However, when I look at the hosts in the oVirt web admin screen, I see that the first host has the name “ovirt-engine-01” whereas it has the hostname of “ovirt-node-01”

I also notice that even though the 1st host is showing the number of VM’s running as “1”, when I click on the “VMs” node, there are no VMs showing.


You have to have a data center active, and only after that you would be able to see your engine VM.  This is a must. First your hosted_storage will be imported into the setup automatically followed by the engine vm import.


Not sure of what “should be”, but, would expect that the first host would have a name equal to its DNS hostname (like the other two do), and that in VMs I would see the engine VM. But is that not how a hosted engine setup works?

And if not, if the engine VM migrates over to another host, will that host gain the name "“ovirt-engine-01”?


no. We don't mess with that. The hostname is static in the engine.

I ask this now because I want to set up a storage domain on these hosts using GlusterFS, and I have to select a host to base the connection on. In the “Use Host” dropbox, I currently see the values:

ovirt-node-03
ovirt-node-02
ovirt-engine-01

I would expect that the last entry would be for “ovirt-host-01”, not “ovirt-engine-01”…

I don’t want to set up the storage domain until I figure this out, so as to prevent potential breakage...

Thanks,
Will
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