Re: [ovirt-users] oVirt Engine redundant ?

[Simone Tiraboschi]

On Tue, Oct 13, 2015 at 9:24 AM, Nico  wrote:

> Le 2015-10-13 09:08, Nico a écrit :
>
> Le 2015-10-12 09:17, Nico a écrit :
>
> Le 2015-10-12 09:09, Barak Korren a écrit :
>
>
>
> What that procedure describes is backing up an existing engine,
> installing a new one and then restoring the backed up data into it.
> This was probably written to describe migration from a stand-alone
> engine host, not an AllInOne.
> Theoretically this should work for your setup, but I am not sure if
> the new hosted engine will be able to properly use the AllInOne node
> as a hypervisor (it would probably depend on the copied configuration
> containing enough details to allow the engine to connect to it over
> the network. you will probably at the very last have to shut down the
> existing engine before starting up the hosted engine)
> I would suggest doing as many backups as you can before starting, and
> performing the H.E. setup on a host that wasn't used by the existing
> engine, that way if it fails you can just shut it down and bring your
> old engine back up.
>
> I got a backup running at this moment,
> scping /gluster/ovirt/d44ee4b0-8d36-467a-9610-c682a618b698/images/ to a
> third device.
>
> So, once done, i'll give a shot on the node2 which is running only VDSM as
> Host agent.
>
> Hope all will be fine !
>
> Hi,
>
> My backups are done, i'm now processing the installation for having the
> engine in a VM but i got the following error at the first step:
>
>
>
>
>
> Ok i put the node2 in maintenance and it continues but i got a new error:
>
>
> root@devnix-virt-master02 ~]# hosted-engine --deploy
> [ INFO ] Stage: Initializing
> [ INFO ] Generating a temporary VNC password.
> [ INFO ] Stage: Environment setup
> Continuing will configure this host for serving as hypervisor and create a
> VM where you have to install oVirt Engine afterwards.
> Are you sure you want to continue? (Yes, No)[Yes]:
> Configuration files: []
> Log file:
> /var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20151013091823-7760bz.log
> Version: otopi-1.3.2 (otopi-1.3.2-1.el7.centos)
> [ INFO ] Hardware supports virtualization
> [ INFO ] Bridge ovirtmgmt already created
> [ INFO ] Stage: Environment packages setup
> [ INFO ] Stage: Programs detection
> [ INFO ] Stage: Environment setup
> [ INFO ] Stage: Environment customization
>
> --== STORAGE CONFIGURATION ==--
>
> During customization use CTRL-D to abort.
> Please specify the storage you would like to use (iscsi, nfs3, nfs4)[nfs3]:
> Please specify the full shared storage connection path to use (example:
> host:/path): ovirt01:/share_nfs
> [ INFO ] Installing on first host
> Please provide storage domain name. [hosted_storage]:
> Local storage datacenter name is an internal name and currently will not
> be shown in engine's admin UI.
> Please enter local datacenter name [hosted_datacenter]:
>
> --== SYSTEM CONFIGURATION ==--
>
>
> --== NETWORK CONFIGURATION ==--
>
> iptables was detected on your computer, do you wish setup to configure it?
> (Yes, No)[Yes]: No
> Please indicate a pingable gateway IP address [176.31.117.254]:
>
> --== VM CONFIGURATION ==--
>
> Please specify the device to boot the VM from (cdrom, disk, pxe) [cdrom]:
> Please specify an alias for the Hosted Engine image [hosted_engine]:
> The following CPU types are supported by this host:
> - model_Nehalem: Intel Nehalem Family
> - model_Penryn: Intel Penryn Family
> - model_Conroe: Intel Conroe Family
> Please specify the CPU type to be used by the VM [model_Nehalem]:
> Please specify path to installation media you would like to use [None]:
> [ ERROR ] Failed to execute stage 'Environment customization': [Errno 2]
> No such file or directory: '/None'
> [ INFO ] Stage: Clean up
> [ INFO ] Generating answer file
> '/var/lib/ovirt-hosted-engine-setup/answers/answers-20151013092118.conf'
> [ INFO ] Stage: Pre-termination
> [ INFO ] Stage: Termination
> [root@devnix-virt-master02 ~]#
>
> I don't understand what is it expecting for the PATH ? i've no idea what
>  INSTALLATION MEDIA is about.
>
> Could you please give me a clue ?
>

You choose  to create your new engine VM booting from a CDRom image so you
have to specify the path of that ISO image (a supported RHEL, Centos or
Fedora release) on your system.



> Thanks
> regards
> Nico
>
>
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
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Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-12 09:17, Nico a écrit : 

> Le 2015-10-12 09:09, Barak Korren a écrit : 
> 
> What that procedure describes is backing up an existing engine,
> installing a new one and then restoring the backed up data into it.
> This was probably written to describe migration from a stand-alone
> engine host, not an AllInOne.
> Theoretically this should work for your setup, but I am not sure if
> the new hosted engine will be able to properly use the AllInOne node
> as a hypervisor (it would probably depend on the copied configuration
> containing enough details to allow the engine to connect to it over
> the network. you will probably at the very last have to shut down the
> existing engine before starting up the hosted engine)
> I would suggest doing as many backups as you can before starting, and
> performing the H.E. setup on a host that wasn't used by the existing
> engine, that way if it fails you can just shut it down and bring your
> old engine back up.

I got a backup running at this moment, scping
/gluster/ovirt/d44ee4b0-8d36-467a-9610-c682a618b698/images/ to a third
device. 

So, once done, i'll give a shot on the node2 which is running only VDSM
as Host agent. 

Hope all will be fine ! 

Hi, 

My backups are done, i'm now processing the installation for having the
engine in a VM but i got the following error at the first step: 

[root@devnix-virt-master02 ~]# hosted-engine --deploy
[ INFO ] Stage: Initializing
[ INFO ] Generating a temporary VNC password.
[ INFO ] Stage: Environment setup
Continuing will configure this host for serving as hypervisor and create
a VM where you have to install oVirt Engine afterwards.
Are you sure you want to continue? (Yes, No)[Yes]:
Configuration files: []
Log file:
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20151013090336-0upz5f.log
Version: otopi-1.3.2 (otopi-1.3.2-1.el7.centos)
[ INFO ] Hardware supports virtualization
[ INFO ] Bridge ovirtmgmt already created
[ INFO ] Stage: Environment packages setup
[ INFO ] Stage: Programs detection
[ INFO ] Stage: Environment setup
[ INFO ] Stage: Environment customization 

--== STORAGE CONFIGURATION ==-- 

During customization use CTRL-D to abort.
[ ERROR ] The following storage pool has been found connected:
0ae7120a-430d-4534-9a7e-59c53fb2e804
[ ERROR ] Failed to execute stage 'Environment customization': Cannot
setup Hosted Engine with connected storage pools
[ INFO ] Stage: Clean up
[ INFO ] Generating answer file
'/var/lib/ovirt-hosted-engine-setup/answers/answers-20151013090355.conf'
[ INFO ] Stage: Pre-termination
[ INFO ] Stage: Termination 

There is no VM running at this moment on this hypervisor (node 2). The
error suggests that the storage is still in use. 

[root@devnix-virt-master02 ~]# vdsClient -s 0
getConnectedStoragePoolsList
0ae7120a-430d-4534-9a7e-59c53fb2e804 

Does that mean i must set this hypervisor (node 2) in MAINTENANCE in
order to continue the steps described in 

http://200.1.19.60/ovirt-engine/docs/manual/en-US/html/Installation_Guide/Migrating_to_a_Self-Hosted_Environment.html
[1] 

Thanks 

Regards 

Nico 

 

Links:
--
[1]
http://200.1.19.60/ovirt-engine/docs/manual/en-US/html/Installation_Guide/Migrating_to_a_Self-Hosted_Environment.html___
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Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-13 09:08, Nico a écrit : 

> Le 2015-10-12 09:17, Nico a écrit : 
> 
> Le 2015-10-12 09:09, Barak Korren a écrit : 
> 
> What that procedure describes is backing up an existing engine,
> installing a new one and then restoring the backed up data into it.
> This was probably written to describe migration from a stand-alone
> engine host, not an AllInOne.
> Theoretically this should work for your setup, but I am not sure if
> the new hosted engine will be able to properly use the AllInOne node
> as a hypervisor (it would probably depend on the copied configuration
> containing enough details to allow the engine to connect to it over
> the network. you will probably at the very last have to shut down the
> existing engine before starting up the hosted engine)
> I would suggest doing as many backups as you can before starting, and
> performing the H.E. setup on a host that wasn't used by the existing
> engine, that way if it fails you can just shut it down and bring your
> old engine back up.

I got a backup running at this moment, scping
/gluster/ovirt/d44ee4b0-8d36-467a-9610-c682a618b698/images/ to a third
device. 

So, once done, i'll give a shot on the node2 which is running only VDSM
as Host agent. 

Hope all will be fine ! 

Hi, 

My backups are done, i'm now processing the installation for having the
engine in a VM but i got the following error at the first step: 

Ok i put the node2 in maintenance and it continues but i got a new
error: 

root@devnix-virt-master02 ~]# hosted-engine --deploy
[ INFO ] Stage: Initializing
[ INFO ] Generating a temporary VNC password.
[ INFO ] Stage: Environment setup
Continuing will configure this host for serving as hypervisor and create
a VM where you have to install oVirt Engine afterwards.
Are you sure you want to continue? (Yes, No)[Yes]:
Configuration files: []
Log file:
/var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20151013091823-7760bz.log
Version: otopi-1.3.2 (otopi-1.3.2-1.el7.centos)
[ INFO ] Hardware supports virtualization
[ INFO ] Bridge ovirtmgmt already created
[ INFO ] Stage: Environment packages setup
[ INFO ] Stage: Programs detection
[ INFO ] Stage: Environment setup
[ INFO ] Stage: Environment customization

--== STORAGE CONFIGURATION ==--

During customization use CTRL-D to abort.
Please specify the storage you would like to use (iscsi, nfs3,
nfs4)[nfs3]:
Please specify the full shared storage connection path to use (example:
host:/path): ovirt01:/share_nfs
[ INFO ] Installing on first host
Please provide storage domain name. [hosted_storage]:
Local storage datacenter name is an internal name and currently will not
be shown in engine's admin UI.
Please enter local datacenter name [hosted_datacenter]:

--== SYSTEM CONFIGURATION ==--

--== NETWORK CONFIGURATION ==--

iptables was detected on your computer, do you wish setup to configure
it? (Yes, No)[Yes]: No
Please indicate a pingable gateway IP address [176.31.117.254]:

--== VM CONFIGURATION ==--

Please specify the device to boot the VM from (cdrom, disk, pxe)
[cdrom]:
Please specify an alias for the Hosted Engine image [hosted_engine]:
The following CPU types are supported by this host:
- model_Nehalem: Intel Nehalem Family
- model_Penryn: Intel Penryn Family
- model_Conroe: Intel Conroe Family
Please specify the CPU type to be used by the VM [model_Nehalem]:
Please specify path to installation media you would like to use [None]:
[ ERROR ] Failed to execute stage 'Environment customization': [Errno 2]
No such file or directory: '/None'
[ INFO ] Stage: Clean up
[ INFO ] Generating answer file
'/var/lib/ovirt-hosted-engine-setup/answers/answers-20151013092118.conf'
[ INFO ] Stage: Pre-termination
[ INFO ] Stage: Termination
[root@devnix-virt-master02 ~]# 

I don't understand what is it expecting for the PATH ? i've no idea what
INSTALLATION MEDIA is about. 

Could you please give me a clue ? 

Thanks 
regards 
Nico 

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Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Here the log error during VM creaation: 

2015-10-13 09:37:06 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm plugin.execute:937
execute-output: ['/bin/vdsClient', '-s', 'localhost', 'setVmTicket',
'e88a4313-863f-4d08-87e3-110fa002a6a5', '**FILTERED**', '10800'] stderr:


2015-10-13 09:37:06 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm mixins._create_vm:162
Command '/bin/vdsClient' failed to execute
2015-10-13 09:37:07 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm plugin.executeRaw:824
execute: ['/bin/vdsClient', '-s', 'localhost', 'setVmTicket',
'e88a4313-863f-4d08-87e3-110fa002a6a5', '**FILTERED**', '10800'],
executable='None',
cwd='None', env=None
2015-10-13 09:37:08 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm plugin.executeRaw:874
execute-result: ['/bin/vdsClient', '-s', 'localhost', 'setVmTicket',
'e88a4313-863f-4d08-87e3-110fa002a6a5', '**FILTERED**', '10800'], rc=16
2015-10-13 09:37:08 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm plugin.execute:932
execute-output: ['/bin/vdsClient', '-s', 'localhost', 'setVmTicket',
'e88a4313-863f-4d08-87e3-110fa002a6a5', '**FILTERED**', '10800'] stdout:
Unexpected exception 

2015-10-13 09:37:08 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm plugin.execute:937
execute-output: ['/bin/vdsClient', '-s', 'localhost', 'setVmTicket',
'e88a4313-863f-4d08-87e3-110fa002a6a5', '**FILTERED**', '10800'] stderr:


2015-10-13 09:37:08 DEBUG
otopi.plugins.ovirt_hosted_engine_setup.vm.runvm mixins._create_vm:162
Command '/bin/vdsClient' failed to execute
2015-10-13 09:37:09 DEBUG otopi.context context._executeMethod:152
method exception
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/otopi/context.py", line 142, in
_executeMethod
method['method']()
File
"/usr/share/ovirt-hosted-engine-setup/scripts/../plugins/ovirt-hosted-engine-setup/vm/runvm.py",
line 146, in _boot_from_install_media
self._create_vm()
File
"/usr/lib/python2.7/site-packages/ovirt_hosted_engine_setup/mixins.py",
line 167, in _create_vm
'Cannot set temporary password for console connection.\n'
RuntimeError: Cannot set temporary password for console connection.
The VM may not have been created: please check VDSM logs
2015-10-13 09:37:09 ERROR otopi.context context._executeMethod:161
Failed to execute stage 'Closing up': Cannot set temporary password for
console connection.
The VM may not have been created: please check VDSM logs 

Any clue is welcome. 

Le 2015-10-13 09:39, Nico a écrit : 

> Le 2015-10-13 09:27, Simone Tiraboschi a écrit : 
> 
> I don't understand what is it expecting for the PATH ? i've no idea what 
> INSTALLATION MEDIA is about. 
> 
> Could you please give me a clue ? 
> 
> You choose to create your new engine VM booting from a CDRom image so you 
> have to specify the path of that ISO image (a supported RHEL, Centos or 
> Fedora release) on your system.

 Ok i was expecting the installation to install itself the VM but now i
understand that i have to choose the OS of the VM. 

Finally, i put a Centos7 like my current nodes. 

it failed now about the passwd of the VM: 

[WARNING] Host name devnix-virt-master02 has no domain suffix
[WARNING] Failed to resolve devnix-virt-master02 using DNS, it can be
resolved only locally 

--== CONFIGURATION PREVIEW ==-- 

Engine FQDN : engine.distran.org
Bridge name : ovirtmgmt
SSH daemon port : 22
Gateway address : 176.31.117.254
Host name for web application : hosted_engine_1
Host ID : 1
Image alias : hosted_engine
Image size GB : 25
Storage connection : ovirt01:/share_nfs
Console type : vnc
Memory size MB : 4096
MAC address : 00:16:3e:5e:2a:85
Boot type : cdrom
Number of CPUs : 2
ISO image (for cdrom boot) :
/mnt/iso/5aec30fa-be8b-4f4e-832e-eafb6fa4a8e0/images/----/CentOS-7-x86_64-DVD-1503-01.iso
CPU Type : model_Nehalem 

Please confirm installation settings (Yes, No)[Yes]:
[ INFO ] Stage: Transaction setup
[ INFO ] Stage: Misc configuration
[ INFO ] Stage: Package installation
[ INFO ] Stage: Misc configuration
[ INFO ] Configuring libvirt
[ INFO ] Configuring VDSM
[ INFO ] Starting vdsmd
[ INFO ] Waiting for VDSM hardware info
[ INFO ] Waiting for VDSM hardware info
[ INFO ] Creating Storage Domain
[ INFO ] Creating Storage Pool
[ INFO ] Connecting Storage Pool
[ INFO ] Verifying sanlock lockspace initialization
[ INFO ] Creating VM Image
[ INFO ] Disconnecting Storage Pool
[ INFO ] Start monitoring domain
[ INFO ] Configuring VM
[ INFO ] Updating hosted-engine configuration
[ INFO ] Stage: Transaction commit
[ INFO ] Stage: Closing up 

The following network ports should be opened:
tcp:5900
tcp:5901
udp:5900
udp:5901
An example of the required configuration for iptables can be found at:
/etc/ovirt-hosted-engine/iptables.example
In order to configure firewalld, copy the files from
/etc/ovirt-hosted-engine/firewalld to /etc/firewalld/services
and execute the following commands:
firewall-cmd -service hosted-console
[ INFO ] Creating VM
[ 

Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-13 09:27, Simone Tiraboschi a écrit : 

>> I don't understand what is it expecting for the PATH ? i've no idea what 
>> INSTALLATION MEDIA is about. 
>> 
>> Could you please give me a clue ?
> 
> You choose to create your new engine VM booting from a CDRom image so you 
> have to specify the path of that ISO image (a supported RHEL, Centos or 
> Fedora release) on your system.

 Ok i was expecting the installation to install itself the VM but now i
understand that i have to choose the OS of the VM. 

Finally, i put a Centos7 like my current nodes. 

it failed now about the passwd of the VM: 

[WARNING] Host name devnix-virt-master02 has no domain suffix
[WARNING] Failed to resolve devnix-virt-master02 using DNS, it can be
resolved only locally 

--== CONFIGURATION PREVIEW ==-- 

Engine FQDN : engine.distran.org
Bridge name : ovirtmgmt
SSH daemon port : 22
Gateway address : 176.31.117.254
Host name for web application : hosted_engine_1
Host ID : 1
Image alias : hosted_engine
Image size GB : 25
Storage connection : ovirt01:/share_nfs
Console type : vnc
Memory size MB : 4096
MAC address : 00:16:3e:5e:2a:85
Boot type : cdrom
Number of CPUs : 2
ISO image (for cdrom boot) :
/mnt/iso/5aec30fa-be8b-4f4e-832e-eafb6fa4a8e0/images/----/CentOS-7-x86_64-DVD-1503-01.iso
CPU Type : model_Nehalem 

Please confirm installation settings (Yes, No)[Yes]:
[ INFO ] Stage: Transaction setup
[ INFO ] Stage: Misc configuration
[ INFO ] Stage: Package installation
[ INFO ] Stage: Misc configuration
[ INFO ] Configuring libvirt
[ INFO ] Configuring VDSM
[ INFO ] Starting vdsmd
[ INFO ] Waiting for VDSM hardware info
[ INFO ] Waiting for VDSM hardware info
[ INFO ] Creating Storage Domain
[ INFO ] Creating Storage Pool
[ INFO ] Connecting Storage Pool
[ INFO ] Verifying sanlock lockspace initialization
[ INFO ] Creating VM Image
[ INFO ] Disconnecting Storage Pool
[ INFO ] Start monitoring domain
[ INFO ] Configuring VM
[ INFO ] Updating hosted-engine configuration
[ INFO ] Stage: Transaction commit
[ INFO ] Stage: Closing up 

The following network ports should be opened:
tcp:5900
tcp:5901
udp:5900
udp:5901
An example of the required configuration for iptables can be found at:
/etc/ovirt-hosted-engine/iptables.example
In order to configure firewalld, copy the files from
/etc/ovirt-hosted-engine/firewalld to /etc/firewalld/services
and execute the following commands:
firewall-cmd -service hosted-console
[ INFO ] Creating VM
[ ERROR ] Failed to execute stage 'Closing up': Cannot set temporary
password for console connection. The VM may not have been created:
please check VDSM logs
[ INFO ] Stage: Clean up
[ INFO ] Generating answer file
'/var/lib/ovirt-hosted-engine-setup/answers/answers-20151013093712.conf'
[ INFO ] Stage: Pre-termination
[ INFO ] Stage: Termination 

what can i do ? 

thanks 

regards 

Nico 

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Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-12 09:09, Barak Korren a écrit : 

>> What that procedure describes is backing up an existing engine,
>> installing a new one and then restoring the backed up data into it.
>> This was probably written to describe migration from a stand-alone
>> engine host, not an AllInOne.
>> Theoretically this should work for your setup, but I am not sure if
>> the new hosted engine will be able to properly use the AllInOne node
>> as a hypervisor (it would probably depend on the copied configuration
>> containing enough details to allow the engine to connect to it over
>> the network. you will probably at the very last have to shut down the
>> existing engine before starting up the hosted engine)
>> I would suggest doing as many backups as you can before starting, and
>> performing the H.E. setup on a host that wasn't used by the existing
>> engine, that way if it fails you can just shut it down and bring your
>> old engine back up.

I got a backup running at this moment, scping
/gluster/ovirt/d44ee4b0-8d36-467a-9610-c682a618b698/images/ to a third
device. 

So, once done, i'll give a shot on the node2 which is running only VDSM
as Host agent. 

Hope all will be fine ! ___
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http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt Engine redundant ?

[Barak Korren]

On 12 October 2015 at 09:52, Nico  wrote:
> Le 2015-10-12 05:37, Julian De Marchi a écrit :
>
>
> The oVirt hosted-engine will do what you want. Have a read of the below.
>
> http://www.ovirt.org/Migrate_to_Hosted_Engine
>
> --julian
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
> Thanks for your quick reply.
>
> I m going to follow the step described in this page.
>
> The first action is to run
>
> # hosted-engine --deploy
>
> INFO  ] Stage: Initializing
>
>   Continuing will configure this host for serving as hypervisor and
> create a VM where oVirt Engine will be installed afterwards.
>
>   Are you sure you want to continue? (Yes, No)[Yes]:
>
> In my case; i’ve already an existing install on this node (AllinOne); will
> it be ok ? nothing will be break or overriden ?.
>
>

What that procedure describes is backing up an existing engine,
installing a new one and then restoring the backed up data into it.
This was probably written to describe migration from a stand-alone
engine host, not an AllInOne.
Theoretically this should work for your setup, but I am not sure if
the new hosted engine will be able to properly use the AllInOne node
as a hypervisor (it would probably depend on the copied configuration
containing enough details to allow the engine to connect to it over
the network. you will probably at the very last have to shut down the
existing engine before starting up the hosted engine)
I would suggest doing as many backups as you can before starting, and
performing the H.E. setup on a host that wasn't used by the existing
engine, that way if it fails you can just shut it down and bring your
old engine back up.

>
> Thanks
>
> Regards
>
> Nico
>
>
>
>
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>



-- 
Barak Korren
bkor...@redhat.com
RHEV-CI Team
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Re: [ovirt-users] oVirt Engine redundant ?

[Nico]

 

Le 2015-10-12 05:37, Julian De Marchi a écrit : 

> The oVirt hosted-engine will do what you want. Have a read of the below.
> 
> http://www.ovirt.org/Migrate_to_Hosted_Engine [1]
> 
> --julian
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users [2]

Thanks for your quick reply. 

I m going to follow the step described in this page. 

The first action is to run 

# hosted-engine --deploy 

 INFO ] Stage: Initializing 

 Continuing will configure this host for serving as hypervisor and
create a VM where oVirt Engine will be installed afterwards. 

 Are you sure you want to continue? (Yes, No)[Yes]: 

In my case; i've already an existing install on this node (AllinOne);
will it be ok ? nothing will be break or overriden ?. 

Thanks 

Regards 

Nico 

 

Links:
--
[1] http://www.ovirt.org/Migrate_to_Hosted_Engine
[2] http://lists.ovirt.org/mailman/listinfo/users
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Re: [ovirt-users] oVirt Engine redundant ?

[Julian De Marchi]

On 12/10/2015 1:56 AM, Nico wrote:



Hello

I got a question regarding the redundancy of oVirt Engine; where we can
control everything through the GUI; aka the vCenter.

Initially; my setup was on a single server; installed following the doc
AllinOne.

Then after; i figured out that i would need redundancy; so i installed a
second node.

my question is about the vCenter; is it possible to start it on the
second node when the first node is down or in maintenance ? how to
ensure it is replicated ? i see there is a postgres DB on first node;
but not on second node. I'm a bit worried.

So, is it possible to have a dormant/slave ovirt ENGINE (oVirt web GUI )
; and if yes, could you point me to the related documentation as i
didn't find it.

Maybe, it is possible to run it in a VM ? is it a good idea ? and is it
still possible to migrate ?


The oVirt hosted-engine will do what you want. Have a read of the below.

http://www.ovirt.org/Migrate_to_Hosted_Engine

--julian
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