[ovirt-users] Add more hosts

Davide Ferrari davide at billymob.com
Thu Sep 15 16:20:18 UTC 2016


Trying to set the maintenance gives me:

[root at vm01 ~]# hosted-engine --set-maintenance --mode=global
/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/storage_backends.py:15:
DeprecationWarning: vdscli uses xmlrpc. since ovirt 3.6 xmlrpc is
deprecated, please use vdsm.jsonrpcvdscli
  import vdsm.vdscli


it's not vey clear if it worked and it's just a warning or since it's
deprecated it didn't work at all

2016-09-15 17:34 GMT+02:00 Simone Tiraboschi <stirabos at redhat.com>:

>
>
> On Thu, Sep 15, 2016 at 5:29 PM, Davide Ferrari <davide at billymob.com>
> wrote:
>
>> How can I forcefully migrate the engine VM?
>>
>
> You can try to migrate it from the engine.
> If it doesn't work you can got to the first host,
> set the global maintenance mode with
>    hosted-engine --set-maintenance --mode=global
> connect to the engine VM and shutdown it
> restart the engine VM on the first host with:
>    hosted-engine --vm-start
>
>
>>
>> 2016-09-15 17:22 GMT+02:00 Simone Tiraboschi <stirabos at redhat.com>:
>>
>>>
>>>
>>> On Thu, Sep 15, 2016 at 5:14 PM, Davide Ferrari <davide at billymob.com>
>>> wrote:
>>>
>>>> All from the CLI. Right now in the GUI I have the "Reinstall" button
>>>> greyed out. What's happening?
>>>>
>>>
>>> I suggest to forcefully migrate the engine VM to the first host; remove
>>> the other hosts from the engine and redeploy from there as
>>> hosted-engine-hosts.
>>>
>>>
>>>>
>>>> 2016-09-15 16:57 GMT+02:00 Simone Tiraboschi <stirabos at redhat.com>:
>>>>
>>>>>
>>>>>
>>>>> On Thu, Sep 15, 2016 at 4:13 PM, Davide Ferrari <davide at billymob.com>
>>>>> wrote:
>>>>>
>>>>>> Strange..now it's working :? I've added successfully a fourth server
>>>>>> to the cluster without touching anything, a part migrating the HE vm to
>>>>>> another host.
>>>>>> But now it seems that 2 of the hosts are not recognized as working.
>>>>>> When I try to migrate the HostedEngine to another machine I get:
>>>>>>
>>>>>> The host hosted_engine_1 did not satisfy internal filter HA because
>>>>>> it is not a Hosted Engine host.
>>>>>> The host hosted_engine_3 did not satisfy internal filter HA because
>>>>>> it is not a Hosted Engine host.
>>>>>>
>>>>>> hosted_engine_2 is in maintanaince mode right now and 4 is the one
>>>>>> that is running the VM. The VM was first migrated from 1 to 2, then from 2
>>>>>> it started giving those errors, then I successfully added 4 and I could
>>>>>> migrate the VM to it, and now it is stuck there.
>>>>>> I'm trying to look through the VDMS logs but oh boy, they are so
>>>>>> verbose!
>>>>>>
>>>>>
>>>>> Did you added your additional hosted-engine hosts from CLI or from the
>>>>> web interface (there is special sub-panel in the add host dialog)?
>>>>> I strongly recommend the second way.
>>>>>
>>>>>
>>>>>
>>>>>>
>>>>>> 2016-09-15 15:11 GMT+02:00 Davide Ferrari <davide at billymob.com>:
>>>>>>
>>>>>>> Hello again
>>>>>>>
>>>>>>> as I said I'm a beginner with OVirt and I was playing with a
>>>>>>> proof-of-concept cluster with OVirt 4.0 + GlusterFS 3.8, following this
>>>>>>> guide
>>>>>>>
>>>>>>> http://www.ovirt.org/blog/2016/03/up-and-running-with-ovirt-3-6/
>>>>>>>
>>>>>>> (it works smoothly with 4.0 too)
>>>>>>> I've created the cluster and the engine is running as an higly
>>>>>>> available VM in the cluster itself with hosted-engine --deploy but now I
>>>>>>> want to add a fourth machine to the cluster but I get this error:
>>>>>>>
>>>>>>>  Cannot automatically add the host to cluster Default: Cannot add
>>>>>>> Host. There is no available server in the cluster to probe the new server.
>>>>>>>
>>>>>>> both if I try to add an host from Ovirt AAdmin GUI or if I try to
>>>>>>> run "hosted-engine --deploy" on the new machine. Is it possible to have
>>>>>>> this cluster conf (with the engine running as a VM) with 4 or more
>>>>>>> machines? What thing should I have to do?
>>>>>>>
>>>>>>> Thanks in advance
>>>>>>>
>>>>>>> --
>>>>>>> Davide Ferrari
>>>>>>> Senior Systems Engineer
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Davide Ferrari
>>>>>> Senior Systems Engineer
>>>>>>
>>>>>> _______________________________________________
>>>>>> Users mailing list
>>>>>> Users at ovirt.org
>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Davide Ferrari
>>>> Senior Systems Engineer
>>>>
>>>
>>>
>>
>>
>> --
>> Davide Ferrari
>> Senior Systems Engineer
>>
>
>


-- 
Davide Ferrari
Senior Systems Engineer
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