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

Tue Sep 6 12:59:28 EDT 2016

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 < [ mailto:alvarez at xtra-mail.fr | 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 | 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. 

BQ_BEGIN

thanks 

Sincerily 

De: "Simone Tiraboschi" < [ mailto:stirabos at redhat.com | stirabos at redhat.com ] > 
À: "alvarez" < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > 
Cc: "Artyom Lukianov" < [ mailto:alukiano at redhat.com | alukiano at redhat.com ] >, "users" < [ mailto:users at ovirt.org | 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 < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > wrote: 

BQ_BEGIN

Ok, 

I have a LUN show as unntached. 

how do I attach it? 

BQ_END

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

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one other question 

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

BQ_END

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

BQ_BEGIN

Sincerily 

De: "Simone Tiraboschi" < [ mailto:stirabos at redhat.com | stirabos at redhat.com ] > 
À: "alvarez" < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > 
Cc: "Artyom Lukianov" < [ mailto:alukiano at redhat.com | alukiano at redhat.com ] >, "users" < [ mailto:users at ovirt.org | 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 < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > wrote: 

BQ_BEGIN

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? 

BQ_END

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 | https://bugzilla.redhat.com/show_bug.cgi?id=1358313 ] 

BQ_BEGIN

sincerily 

Inle 

De: "Artyom Lukianov" < [ mailto:alukiano at redhat.com | alukiano at redhat.com ] > 
À: "alvarez" < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > 
Cc: "Simone Tiraboschi" < [ mailto:stirabos at redhat.com | stirabos at redhat.com ] >, "users" < [ mailto:users at ovirt.org | 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 < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > wrote: 

BQ_BEGIN

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 | http://dl.fedoraproject.org/pub/epel/7/x86_64/h/haveged-1.9.1-1.el7.x86_64.rpm ] 

-systemctl enable haveged 

systemctl start haveged 

cat /proc/sys/kernel/random/entropy_avail 

1888 
it 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" < [ mailto:stirabos at redhat.com | stirabos at redhat.com ] > 
À: "alvarez" < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > 
Cc: "Gianluca Cecchi" < [ mailto:gianluca.cecchi at gmail.com | gianluca.cecchi at gmail.com ] >, "users" < [ mailto:users at ovirt.org | 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 < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] > wrote: 

BQ_BEGIN

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 

BQ_END

Yes, adding entropy to the host should still help. 

BQ_BEGIN

De: "Simone Tiraboschi" < [ mailto:stirabos at redhat.com | stirabos at redhat.com ] > 
À: "Gianluca Cecchi" < [ mailto:gianluca.cecchi at gmail.com | gianluca.cecchi at gmail.com ] > 
Cc: "alvarez" < [ mailto:alvarez at xtra-mail.fr | alvarez at xtra-mail.fr ] >, "users" < [ mailto:users at ovirt.org | 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 < [ mailto:gianluca.cecchi at gmail.com | gianluca.cecchi at gmail.com ] > wrote: 

BQ_BEGIN

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

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hello, 

but normally it is not possible to install paquets on ovirt node 
that's way I wonder how to install haveged? 

yum localinstall is this the command? 

Thanks 

BQ_END

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

BQ_END

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 | https://bugzilla.redhat.com/show_bug.cgi?id=1357246 ] 

BQ_END

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