<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Dec 10, 2015 at 8:23 AM, Yedidyah Bar David <span dir="ltr"><<a href="mailto:didi@redhat.com" target="_blank">didi@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, Dec 7, 2015 at 2:59 PM, Taste-Of-IT <<a href="mailto:kontakt@taste-of-it.de">kontakt@taste-of-it.de</a>> wrote:<br>
> Am 2015-12-07 13:41, schrieb Yedidyah Bar David:<br>
>><br>
>> On Mon, Dec 7, 2015 at 1:54 PM, Taste-Of-IT <<a href="mailto:kontakt@taste-of-it.de">kontakt@taste-of-it.de</a>><br>
>> wrote:<br>
<div><div class="h5">>>><br>
>>> Am 2015-12-07 11:17, schrieb Yedidyah Bar David:<br>
>>>><br>
>>>><br>
>>>> On Mon, Dec 7, 2015 at 11:34 AM, Taste-Of-IT <<a href="mailto:kontakt@taste-of-it.de">kontakt@taste-of-it.de</a>><br>
>>>> wrote:<br>
>>>>><br>
>>>>><br>
>>>>> Am 2015-12-07 10:21, schrieb Yedidyah Bar David:<br>
>>>>>><br>
>>>>>><br>
>>>>>><br>
>>>>>> On Mon, Dec 7, 2015 at 11:05 AM, Taste-Of-IT <<a href="mailto:kontakt@taste-of-it.de">kontakt@taste-of-it.de</a>><br>
>>>>>> wrote:<br>
>>>>>>><br>
>>>>>>><br>
>>>>>>><br>
>>>>>>> Am 2015-12-07 08:06, schrieb Yedidyah Bar David:<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> On Mon, Dec 7, 2015 at 12:38 AM, Taste-Of-IT<br>
>>>>>>>> <<a href="mailto:kontakt@taste-of-it.de">kontakt@taste-of-it.de</a>><br>
>>>>>>>> wrote:<br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>> Hello,<br>
>>>>>>>>> i am new with ovirt and i installed ovirt engine 3.6 on centos 7.<br>
>>>>>>>>> After<br>
>>>>>>>>> first login i create the host with fqdn of ovirt server but without<br>
>>>>>>>>> powersavesettings. Firt i saw installing as status for host, but<br>
>>>>>>>>> after<br>
>>>>>>>>> a<br>
>>>>>>>>> while nothing happend, I reboot the server. In engine.log i see<br>
>>>>>>>>> "VMs<br>
>>>>>>>>> initialization finished for Host", but i cant open the webgui. What<br>
>>>>>>>>> can<br>
>>>>>>>>> i<br>
>>>>>>>>> do? Where can i look to find the error and what have i done wrong?<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> If host-deploy managed to finish, you can see its log in [1].<br>
>>>>>>>> Otherwise<br>
>>>>>>>> please try to (re)install the host.<br>
>>>>>>>><br>
>>>>>>>> [1] /var/log/ovirt-engine/host-deploy/<br>
>>>>>>>><br>
>>>>>>>> Best,<br>
>>>>>>><br>
>>>>>>><br>
>>>>>>><br>
>>>>>>><br>
>>>>>>><br>
>>>>>>> Hi Didi,<br>
>>>>>>> ok i will have a closer look into the log. Actuall the WebGUI doesnt<br>
>>>>>>> load,<br>
>>>>>>> services are up and running. How can i reinstall the host? Via cli?<br>
>>>>>>> Or<br>
>>>>>>> do<br>
>>>>>>> you mean the hostsystem with installed ovirt engine? thx<br>
>>>>>><br>
>>>>>><br>
>>>>>><br>
>>>>>><br>
>>>>>> Not sure I follow.<br>
>>>>>><br>
>>>>>> The engine runs on some machine, let's call it "the engine machine".<br>
>>>>>> If it's a self-hosted-engine, it's running inside a VM managed by<br>
>>>>>> itself.<br>
>>>>>> Otherwise it's running elsewhere (on some physical machine, or some<br>
>>>>>> other<br>
>>>>>> VM).<br>
>>>>>><br>
>>>>>> A "Host", in ovirt terminology, is where VMs run.<br>
>>>>>><br>
>>>>>> Now please describe what you did, what you now try to do that doesn't<br>
>>>>>> work, and what you can find in logs that might be related.<br>
>>>>>><br>
>>>>>> If you can't access the web admin ui, that's a completely different<br>
>>>>>> problem than if you can't add a host to the engine.<br>
>>>>>><br>
>>>>>> Best,<br>
>>>>><br>
>>>>><br>
>>>>><br>
>>>>><br>
>>>>> Hi Didi,<br>
>>>>> as far i understand there are to ways to setup ovirt. One as<br>
>>>>> self-hosted<br>
>>>>> enginge for ha and with ovirt host in vm on storage<br>
>>>><br>
>>>><br>
>>>><br>
>>>> That's called "self-hosted-engine"<br>
>>>><br>
>>>>> and hosted engine where<br>
>>>>> all runs on the same host.<br>
>>>><br>
>>>><br>
>>>><br>
>>>> This is called all-in-one [1].<br>
>>>><br>
>>>> [1] <a href="http://www.ovirt.org/Feature/AllInOne" rel="noreferrer" target="_blank">http://www.ovirt.org/Feature/AllInOne</a><br>
>>>><br>
>>>>> So i setup hosted engine on same machine and in<br>
>>>>> installation process i setup iso_domain via nfs too. i have done<br>
>>>>> nothing<br>
>>>>> more yet. so as i can see and read from the manual i now have to setup<br>
>>>>> the<br>
>>>>> host,<br>
>>>><br>
>>>><br>
>>>><br>
>>>> No. You are not supposed to setup the host from the web interface.<br>
>>>> I didn't try that recently, but in the past there were issues similar<br>
>>>> to what you wrote below. Please follow the instructions in that page.<br>
>>>> Also please note that in 4.0, allinone will be dropped. Systems that<br>
>>>> wish to have everything on a single host will need to use hosted-engine.<br>
>>>> Also note that people reported locking issues with local nfs mounts, so<br>
>>>> it seems like the safest bet for now is to use nested kvm - run a VM to<br>
>>>> play the "Host" role, and another VM as an nfs server (or iscsi), and<br>
>>>> then either a third VM for the engine, or hosted-engine (meaning, engine<br>
>>>> runs inside a VM running inside the first VM).<br>
>>>><br>
>>>>> than network and than data domain and so on. now i setup the host and<br>
>>>>> say new, put a name inside and the fqdn of the initial host of host<br>
>>>>> engine<br>
>>>>> like <a href="http://myserver.com" rel="noreferrer" target="_blank">myserver.com</a>. after that i saw the progress which says<br>
>>>>> "installing.." i<br>
>>>>> wait several minutes and after that i got network time out and cant<br>
>>>>> enter<br>
>>>>> the webgui. hope that helps<br>
>>>><br>
>>>><br>
>>>><br>
>>>> Good luck,<br>
>>><br>
>>><br>
>>><br>
</div></div>>>> Hi,<br>
>>> that sounds not good. As i understand the only way with ovirt from<br>
>>> Version 4<br>
>>> will self-hosted-engine and i have to setup all in nested-vms if i want<br>
>>> or<br>
>>> only can use one machine, right?<br>
>><br>
>><br>
>> Not sure I completely followed.<br>
>><br>
>> allinone will not be supported in 4.<br>
>><br>
>> hosted-engine will be the only way to install an entire ovirt system on<br>
>> a single machine, _supported_ by ovirt. And as I said, even this one will<br>
>> require an external storage machine.<br>
>><br>
>> Of course you can use virsh/kvm or whatever other means for creating VMs<br>
>> and use them to setup ovirt.<br>
>><br>
>>><br>
>>> Ok i will have to reinstall my testsystem. Is that the way todo:<br>
>>> <a href="http://www.ovirt.org/Features/Self_Hosted_Engine" rel="noreferrer" target="_blank">http://www.ovirt.org/Features/Self_Hosted_Engine</a>?<br>
>><br>
>><br>
>> Yes, but you can use the howto [1], which is perhaps more comfortable.<br>
>><br>
>> [1] <a href="http://www.ovirt.org/Hosted_Engine_Howto" rel="noreferrer" target="_blank">http://www.ovirt.org/Hosted_Engine_Howto</a><br>
>><br>
>>> So i have to install ovirt<br>
>>> on centos7, than create a kvm with centos for the engine than for the<br>
>>> host<br>
>>> and last a kvm for the nfs and data domain with centos, or better to use<br>
>>> iscsi du to performance? after that i can install the first virtuall<br>
>>> machine,right?<br>
>><br>
>><br>
>> Depends on what you want to do.<br>
>><br>
>> BTW, I didn't mention glusterfs, mainly because I do not know it well,<br>
>> but that's also something to consider.<br>
>><br>
>>> sounds strange and complicated...<br>
>><br>
>><br>
>> ovirt is not designed to manage a single machine. For a single machine,<br>
>> simpler libvirt frontends are easier to use. If you install it just to<br>
>> learn/test, that's how it goes.<br>
><br>
> Hi,<br>
> ok i have to lunge. i have to migrate from proxmox to another vm-system and<br>
> thing ovirt is just fine while open source.. so i asked in the irc for my<br>
> situation and if ovirt does fit. i have only one server which should run a<br>
> few kvm vm guests (debian, centos, ubuntu...) and also for webservices. in<br>
> the irc they point me to the all-in-solution, i think at that time they<br>
> didnt know that it will not further supporter from version 4 onto.. for my<br>
> situation 2 server are to much but i will later add more server with ha<br>
> usability.<br>
<br>
(Re-adding the list, adding Sandro)<br>
<br>
The plan for hyper-convergence is to require at least 3 hosts, so that you<br>
have a replica-3 cluster storage.<br>
<br>
Perhaps we should reconsider allowing local storage with hosted-engine.<br>
This will prevent HA, but will fit into the place of current allinone<br>
usage. The next stage will be that users will ask to migrate this local<br>
storage to shared one (or even gluster :-) ).<br></blockquote><div><br></div><div>A loopback mounted iSCSI target should already do the job; of course there is a performance price for that.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
For a 2-cluster HA setup we do not have, or plan to have AFAIK, any<br>
official support, but you can have a look at DRBD [1].<br>
<br>
[1] <a href="http://www.ovirt.org/Features/DRBD" rel="noreferrer" target="_blank">http://www.ovirt.org/Features/DRBD</a><br>
<br>
Best,<br>
<div class="HOEnZb"><div class="h5">--<br>
Didi<br>
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