[ovirt-users] ovirt hosted-engine deploy never works

Wed Sep 7 06:06:52 UTC 2016

You can't migrate the engine to a normal host added via add host. To join the hosted-engine pool, you need to run hosted-engine --deploy and point to the same storage used by the engine. It will then be recognised as adding additional host capable of hosting the engine. See Hosted Engine Howto — oVirt Thanks.

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Hosted Engine Howto — oVirt
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    On Wednesday, September 7, 2016 12:59 AM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

Hello,
 Thanks for the reply 
but  i did not understood the following part  " Since 4.0 you can also choose to have your new host participating to the hosted-engine pool from the engine itself."
it's my first time using ovirt
coud you explain?

De: "Simone Tiraboschi" <stirabos at redhat.com>
À: "alvarez" <alvarez at xtra-mail.fr>
Cc: "Artyom Lukianov" <alukiano at redhat.com>, "users" <users at ovirt.org>
Envoyé: Mardi 6 Septembre 2016 18:41:33
Objet: Re: [ovirt-users] ovirt hosted-engine deploy never works

On Tue, Sep 6, 2016 at 6:19 PM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

Hello,
Now I have 1 hoste_engine, 1 ovirt-node and 1 cluster
How do i add a node to the cluster?
Do I go to ovirt-engine and I add a node directly? or are there rpms to install fist?

You have just to install http://resources.ovirt.org/pub/yum-repo/ovirt-release40.rpm on your next host.Than you can go to the engine in the hosts section of that cluster and choose New.Since 4.0 you can also choose to have your new host participating to the hosted-engine pool from the engine itself. 

thanks
Sincerily
De: "Simone Tiraboschi" <stirabos at redhat.com>
À: "alvarez" <alvarez at xtra-mail.fr>
Cc: "Artyom Lukianov" <alukiano at redhat.com>, "users" <users at ovirt.org>
Envoyé: Vendredi 2 Septembre 2016 13:38:05
Objet: Re: [ovirt-users] ovirt hosted-engine deploy never works

On Fri, Sep 2, 2016 at 12:39 PM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

Ok,
I have a LUN show as unntached.
how do I attach it?

http://www.ovirt.org/documentation/quickstart/quickstart-guide/#Create_an_iSCSI_Data_Domain

one other question
do  have to add the ISCSI LUN where the hosted-engine was deployed?

No, the engine will do it automatically once the datacenter will be up. 

Sincerily
De: "Simone Tiraboschi" <stirabos at redhat.com>
À: "alvarez" <alvarez at xtra-mail.fr>
Cc: "Artyom Lukianov" <alukiano at redhat.com>, "users" <users at ovirt.org>
Envoyé: Vendredi 2 Septembre 2016 12:09:32
Objet: Re: [ovirt-users] ovirt hosted-engine deploy never works

On Fri, Sep 2, 2016 at 11:49 AM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

Hello ,
when i connect to hosted_engine web-interface i get "the hosted Engine Storage Domain doesn't exist. it should be imported into the setup".
 waht does it means?

It will be automatically imported once you add your first storage domain for regular VMs.
The message is a bit confusing and indeed we have an open bug to change it:https://bugzilla.redhat.com/show_bug.cgi?id=1358313

sincerily
InleDe: "Artyom Lukianov" <alukiano at redhat.com>
À: "alvarez" <alvarez at xtra-mail.fr>
Cc: "Simone Tiraboschi" <stirabos at redhat.com>, "users" <users at ovirt.org>
Envoyé: Jeudi 1 Septembre 2016 16:52:09
Objet: Re: [ovirt-users] ovirt hosted-engine deploy never works

Just run on your host hosted-engine --vm-status.
On Thu, Sep 1, 2016 at 5:47 PM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

hello,
 I managed to install hoste-engine.I think
 yum localinstall http://dl.fedoraproject.org/pub/epel/7/x86_64/h/haveged-1.9.1-1.el7.x86_64.rpm -systemctl enable havegedsystemctl start haveged
cat /proc/sys/kernel/random/entropy_avail1888it was helpfull
I lost connection for a while to the ovirt-node
But I think the hosted-engine vm is not in the iscsi LUN.How can I see where is the VM located?
Thanks
De: "Simone Tiraboschi" <stirabos at redhat.com>
À: "alvarez" <alvarez at xtra-mail.fr>
Cc: "Gianluca Cecchi" <gianluca.cecchi at gmail.com>, "users" <users at ovirt.org>
Envoyé: Jeudi 1 Septembre 2016 12:12:39
Objet: Re: [ovirt-users] ovirt hosted-engine deploy never works

On Thu, Sep 1, 2016 at 12:06 PM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

Hello,
but the problem is that i am not able to finish the hosted_engine deploy. So, I am not able to modify the Vm, because procces stoped :-(
thanks for the help

Yes, adding entropy to the host should still help. 
De: "Simone Tiraboschi" <stirabos at redhat.com>
À: "Gianluca Cecchi" <gianluca.cecchi at gmail.com>
Cc: "alvarez" <alvarez at xtra-mail.fr>, "users" <users at ovirt.org>
Envoyé: Jeudi 1 Septembre 2016 12:00:22
Objet: Re: [ovirt-users] ovirt hosted-engine deploy never works

On Thu, Sep 1, 2016 at 11:48 AM, Gianluca Cecchi <gianluca.cecchi at gmail.com> wrote:

On Thu, Sep 1, 2016 at 11:39 AM, Osvaldo ALVAREZ POZO <alvarez at xtra-mail.fr> wrote:

hello,
but normally it is not possible to install paquets on ovirt nodethat's way I wonder how to install  haveged?
yum localinstall is this the command?
Thanks

Actually the haveged workaround is to apply on engine server, tipically when it is deployed as a VM, not the host.HIH,Gianluca

The effectiveness of HAVEGE (HArdware Volatile Entropy Gathering and Expansion) on virtual machines is quite debated.
Having more entropy on the host could also help, but yes, we also have to add a virtio-rng device to the engine VM:https://bugzilla.redhat.com/show_bug.cgi?id=1357246

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