Re: [ovirt-users] oVirt non-self-hosted HA

[Yaniv Kaul]

On Sun, Apr 15, 2018 at 4:26 AM, TomK  wrote:

> On 4/5/2018 8:59 AM, Tom wrote:
>
>>
>>
>> Sent from my iPhone
>>
>> On Apr 5, 2018, at 5:29 AM, Yaniv Kaul > yk...@redhat.com>> wrote:
>>
>>
>>>
>>> On Thu, Apr 5, 2018 at 9:08 AM, TomK >> tomk...@mdevsys.com>> wrote:
>>>
>>> On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
>>>
>>>
>>>
>>> On Wed, Apr 4, 2018 at 12:39 AM, Tom >>  >> >> wrote:
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul >> 
>>> >> wrote:
>>>
>>>
>>>
>>> On Tue, Apr 3, 2018 at 3:12 PM, TomK
>>> mailto:tomk...@mdevsys.com>
>>> >>
>>> >> wrote:
>>>
>>> Hey Guy's,
>>>
>>> If I'm looking to setup the oVirt engine in an HA
>>> configuration off the physical servers hosting my
>>> VM's (non
>>> self hosted), what are my options here?
>>>
>>> I want to setup two to four active oVirt engine
>>> instances
>>> elsewhere and handle the HA via something like
>>> haproxy /
>>> keepalived to keep the entire experience seamless
>>> to the user.
>>>
>>>
>>> You will need to set up the oVirt engine service as
>>> well as the PG
>>> database (and ovirt-engine-dwhd service and any other
>>> service we
>>> run next to the engine) as highly available module.
>>> In pacemaker[1], for example.
>>> You'll need to ensure configuration is also sync'ed
>>> between nodes,
>>> etc.
>>> Y.
>>>
>>>
>>> So already have one ovirt engine setup separately on a vm
>>> that
>>> manages two remote physical hosts.  So familiar with the
>>> single host
>>> approach which I would simply replicate.  At least that’s
>>> the idea
>>> anyway.  Could you please expand a bit on the highly
>>> available
>>> module and  syncing the config between hosts?
>>>
>>>
>>> That's a different strategy, which is also legit - you treat
>>> this VM as a highly available resource. Now you do not need to
>>> sync the config - just the VM disk and config.
>>>
>>>
>>> I think there's a postgres component too and if oVirt engine keeps
>>> all it's date on the postgres tables, then synchronizing this
>>> piece might be all I need?  I'm not sure how the separate oVirt
>>> engines sitting on various separate physical hosts keep their
>>> settings in sync about the rest of the physicals in an oVirt
>>> environment. (Assume we may have 100 oVirt physicals for example.)
>>>
>>>
>>> There's more than just the database, although it contains 99% of what
>>> you need. See the content of the result of 'engine-backup' command.
>>> I think you might be somewhat confusing between the number of oVirt
>>> hypervisors (we support hundreds) and the Engine - the management, which is
>>> single - and with hosted-engine, it's a single, but highly available
>>> virtual machine - that can run on one of several (I suggest 3-8) of those
>>> hypervisors.
>>> Y.
>>>
>>
>> Yah, still very new to much of this.  Thank you again.
>>
>> I’ll take that away and do some reading.
>>
>> Cheers,
>> Tom
>>
>>
> "that can run on one of several (I suggest 3-8) of those hypervisors."
> To clarify.  So if I have 3-8 copies of the oVirt Engine in a self-hosted
> config, only one can run at any one time?  Is this correct?
>

'One Engine to rule them all.'
Y.


> Cheers,
> Tom
>
>
>>>
>>> Perhaps something like
>>> https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuri
>>> ng-ha-kvm-guest.html
>>> >> ing-ha-kvm-guest.html>
>>> .
>>>
>>> But if you are already doing that, I'm not sure why you'd
>>> prefer this over hosted-engine setup.
>>>
>>>
>>> I'm comparing both options.  I really don't want to ask too many
>>> specific until I have the chance to read into the details of both.
>>>
>>> Y.
>>>
>>>
>>> Cheers,
>>> Tom
>>>
>>>
>>>
>>> Cheers,
>>> Tom
>>>
>>>
>>> [1] https://clusterlabs.org/quickstart-redhat.html
>>> 
>>> >> >
>>>
>>>
>>> From what I've seen in oVirt, that seems to be
>>> possible
>>>

Re: [ovirt-users] oVirt non-self-hosted HA

[TomK]

On 4/5/2018 8:59 AM, Tom wrote:



Sent from my iPhone

On Apr 5, 2018, at 5:29 AM, Yaniv Kaul > wrote:





On Thu, Apr 5, 2018 at 9:08 AM, TomK > wrote:


On 4/4/2018 3:11 AM, Yaniv Kaul wrote:



On Wed, Apr 4, 2018 at 12:39 AM, Tom mailto:t...@mdevsys.com> >> wrote:



    Sent from my iPhone

    On Apr 3, 2018, at 9:32 AM, Yaniv Kaul mailto:yk...@redhat.com>
    >> wrote:



    On Tue, Apr 3, 2018 at 3:12 PM, TomK
mailto:tomk...@mdevsys.com>
    >> wrote:

        Hey Guy's,

        If I'm looking to setup the oVirt engine in an HA
        configuration off the physical servers hosting my
VM's (non
        self hosted), what are my options here?

        I want to setup two to four active oVirt engine
instances
        elsewhere and handle the HA via something like
haproxy /
        keepalived to keep the entire experience seamless
to the user.


    You will need to set up the oVirt engine service as
well as the PG
    database (and ovirt-engine-dwhd service and any other
service we
    run next to the engine) as highly available module.
    In pacemaker[1], for example.
    You'll need to ensure configuration is also sync'ed
between nodes,
    etc.
    Y.


    So already have one ovirt engine setup separately on a vm that
    manages two remote physical hosts.  So familiar with the
single host
    approach which I would simply replicate.  At least that’s
the idea
    anyway.  Could you please expand a bit on the highly available
    module and  syncing the config between hosts?


That's a different strategy, which is also legit - you treat
this VM as a highly available resource. Now you do not need to
sync the config - just the VM disk and config.


I think there's a postgres component too and if oVirt engine keeps
all it's date on the postgres tables, then synchronizing this
piece might be all I need?  I'm not sure how the separate oVirt
engines sitting on various separate physical hosts keep their
settings in sync about the rest of the physicals in an oVirt
environment. (Assume we may have 100 oVirt physicals for example.)


There's more than just the database, although it contains 99% of what 
you need. See the content of the result of 'engine-backup' command.
I think you might be somewhat confusing between the number of oVirt 
hypervisors (we support hundreds) and the Engine - the management, 
which is single - and with hosted-engine, it's a single, but highly 
available virtual machine - that can run on one of several (I suggest 
3-8) of those hypervisors.

Y.


Yah, still very new to much of this.  Thank you again.

I’ll take that away and do some reading.

Cheers,
Tom



"that can run on one of several (I suggest 3-8) of those hypervisors."
To clarify.  So if I have 3-8 copies of the oVirt Engine in a 
self-hosted config, only one can run at any one time?  Is this correct?


Cheers,
Tom




Perhaps something like

https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html


.

But if you are already doing that, I'm not sure why you'd
prefer this over hosted-engine setup.


I'm comparing both options.  I really don't want to ask too many
specific until I have the chance to read into the details of both.

Y.


Cheers,
Tom



    Cheers,
    Tom


    [1] https://clusterlabs.org/quickstart-redhat.html

    >


        From what I've seen in oVirt, that seems to be
possible
        without the two oVirt engines even knowing each
other's
        existence but is it something anyone has ever
done?  Any
        recommendations in this case?

        Having settings replicated would be a bonus but I
would be
        comfortable if they weren't and I handle that myself.

        --         Cheers,
        Tom K.
   
-

Re: [ovirt-users] oVirt non-self-hosted HA

[Tom]

Sent from my iPhone

> On Apr 5, 2018, at 5:29 AM, Yaniv Kaul  wrote:
> 
> 
> 
>> On Thu, Apr 5, 2018 at 9:08 AM, TomK  wrote:
>>> On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
>>> 
>>> 
>>> On Wed, Apr 4, 2018 at 12:39 AM, Tom >> > wrote:
>>> 
>>> 
>>> 
>>> Sent from my iPhone
>>> 
>>> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul >> > wrote:
>>> 
 
 
 On Tue, Apr 3, 2018 at 3:12 PM, TomK >>> > wrote:
 
 Hey Guy's,
 
 If I'm looking to setup the oVirt engine in an HA
 configuration off the physical servers hosting my VM's (non
 self hosted), what are my options here?
 
 I want to setup two to four active oVirt engine instances
 elsewhere and handle the HA via something like haproxy /
 keepalived to keep the entire experience seamless to the user.
 
 
 You will need to set up the oVirt engine service as well as the PG
 database (and ovirt-engine-dwhd service and any other service we
 run next to the engine) as highly available module.
 In pacemaker[1], for example.
 You'll need to ensure configuration is also sync'ed between nodes,
 etc.
 Y.
>>> 
>>> So already have one ovirt engine setup separately on a vm that
>>> manages two remote physical hosts.  So familiar with the single host
>>> approach which I would simply replicate.  At least that’s the idea
>>> anyway.  Could you please expand a bit on the highly available
>>> module and  syncing the config between hosts?
>>> 
>>> 
>>> That's a different strategy, which is also legit - you treat this VM as a 
>>> highly available resource. Now you do not need to sync the config - just 
>>> the VM disk and config.
>> 
>> I think there's a postgres component too and if oVirt engine keeps all it's 
>> date on the postgres tables, then synchronizing this piece might be all I 
>> need?  I'm not sure how the separate oVirt engines sitting on various 
>> separate physical hosts keep their settings in sync about the rest of the 
>> physicals in an oVirt environment. (Assume we may have 100 oVirt physicals 
>> for example.)
> 
> There's more than just the database, although it contains 99% of what you 
> need. See the content of the result of 'engine-backup' command.
> I think you might be somewhat confusing between the number of oVirt 
> hypervisors (we support hundreds) and the Engine - the management, which is 
> single - and with hosted-engine, it's a single, but highly available virtual 
> machine - that can run on one of several (I suggest 3-8) of those hypervisors.
> Y.

Yah, still very new to much of this.  Thank you again.

I’ll take that away and do some reading.  

Cheers,
Tom

>  
>> 
>> 
>>> Perhaps something like 
>>> https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html
>>>  .
>>> 
>>> But if you are already doing that, I'm not sure why you'd prefer this over 
>>> hosted-engine setup.
>> 
>> I'm comparing both options.  I really don't want to ask too many specific 
>> until I have the chance to read into the details of both.
>> 
>>> Y.
>> 
>> Cheers,
>> Tom
>> 
>>> 
>>> 
>>> Cheers,
>>> Tom
>>> 
 
 [1] https://clusterlabs.org/quickstart-redhat.html
 
 
 
 From what I've seen in oVirt, that seems to be possible
 without the two oVirt engines even knowing each other's
 existence but is it something anyone has ever done?  Any
 recommendations in this case?
 
 Having settings replicated would be a bonus but I would be
 comfortable if they weren't and I handle that myself.
 
 -- Cheers,
 Tom K.
 
 -
 
 Living on earth is expensive, but it includes a free trip
 around the sun.
 
 ___
 Users mailing list
 Users@ovirt.org 
 http://lists.ovirt.org/mailman/listinfo/users
 
 
 
>>> 
>> 
>> 
>> -- 
>> Cheers,
>> Tom K.
>> -
>> 
>> Living on earth is expensive, but it includes a free trip around the sun.
>> 
> 
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt non-self-hosted HA

[Yaniv Kaul]

On Thu, Apr 5, 2018 at 9:08 AM, TomK  wrote:

> On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
>
>>
>>
>> On Wed, Apr 4, 2018 at 12:39 AM, Tom > t...@mdevsys.com>> wrote:
>>
>>
>>
>> Sent from my iPhone
>>
>> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul > > wrote:
>>
>>
>>>
>>> On Tue, Apr 3, 2018 at 3:12 PM, TomK >> > wrote:
>>>
>>> Hey Guy's,
>>>
>>> If I'm looking to setup the oVirt engine in an HA
>>> configuration off the physical servers hosting my VM's (non
>>> self hosted), what are my options here?
>>>
>>> I want to setup two to four active oVirt engine instances
>>> elsewhere and handle the HA via something like haproxy /
>>> keepalived to keep the entire experience seamless to the user.
>>>
>>>
>>> You will need to set up the oVirt engine service as well as the PG
>>> database (and ovirt-engine-dwhd service and any other service we
>>> run next to the engine) as highly available module.
>>> In pacemaker[1], for example.
>>> You'll need to ensure configuration is also sync'ed between nodes,
>>> etc.
>>> Y.
>>>
>>
>> So already have one ovirt engine setup separately on a vm that
>> manages two remote physical hosts.  So familiar with the single host
>> approach which I would simply replicate.  At least that’s the idea
>> anyway.  Could you please expand a bit on the highly available
>> module and  syncing the config between hosts?
>>
>>
>> That's a different strategy, which is also legit - you treat this VM as a
>> highly available resource. Now you do not need to sync the config - just
>> the VM disk and config.
>>
>
> I think there's a postgres component too and if oVirt engine keeps all
> it's date on the postgres tables, then synchronizing this piece might be
> all I need?  I'm not sure how the separate oVirt engines sitting on various
> separate physical hosts keep their settings in sync about the rest of the
> physicals in an oVirt environment. (Assume we may have 100 oVirt physicals
> for example.)


There's more than just the database, although it contains 99% of what you
need. See the content of the result of 'engine-backup' command.
I think you might be somewhat confusing between the number of oVirt
hypervisors (we support hundreds) and the Engine - the management, which is
single - and with hosted-engine, it's a single, but highly available
virtual machine - that can run on one of several (I suggest 3-8) of those
hypervisors.
Y.


>
>
> Perhaps something like https://www.unixarena.com/2015
>> /12/rhel-7-pacemaker-configuring-ha-kvm-guest.html .
>>
>> But if you are already doing that, I'm not sure why you'd prefer this
>> over hosted-engine setup.
>>
>
> I'm comparing both options.  I really don't want to ask too many specific
> until I have the chance to read into the details of both.
>
> Y.
>>
>
> Cheers,
> Tom
>
>
>>
>> Cheers,
>> Tom
>>
>>
>>> [1] https://clusterlabs.org/quickstart-redhat.html
>>> 
>>>
>>>
>>> From what I've seen in oVirt, that seems to be possible
>>> without the two oVirt engines even knowing each other's
>>> existence but is it something anyone has ever done?  Any
>>> recommendations in this case?
>>>
>>> Having settings replicated would be a bonus but I would be
>>> comfortable if they weren't and I handle that myself.
>>>
>>> -- Cheers,
>>> Tom K.
>>> 
>>> -
>>>
>>> Living on earth is expensive, but it includes a free trip
>>> around the sun.
>>>
>>> ___
>>> Users mailing list
>>> Users@ovirt.org 
>>> http://lists.ovirt.org/mailman/listinfo/users
>>> 
>>>
>>>
>>>
>>
>
> --
> Cheers,
> Tom K.
> 
> -
>
> Living on earth is expensive, but it includes a free trip around the sun.
>
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt non-self-hosted HA

[Johan Bernhardsson]

The norm is to have a cluster with shared storage. So you have 3 to 5 
hardware noed that shares storage for the hosted engine. That shared 
storage is in sync. So you don't have one engine per physical node.


If one hardware node goes down the engine is restarted on another node with 
the help of hosted-engine service.


/Johan

On April 5, 2018 08:11:50 TomK  wrote:

On 4/4/2018 3:11 AM, Yaniv Kaul wrote:


On Wed, Apr 4, 2018 at 12:39 AM, Tom mailto:t...@mdevsys.com>> wrote:



Sent from my iPhone

On Apr 3, 2018, at 9:32 AM, Yaniv Kaul mailto:yk...@redhat.com>> wrote:



On Tue, Apr 3, 2018 at 3:12 PM, TomK mailto:tomk...@mdevsys.com>> wrote:

Hey Guy's,

If I'm looking to setup the oVirt engine in an HA
configuration off the physical servers hosting my VM's (non
self hosted), what are my options here?

I want to setup two to four active oVirt engine instances
elsewhere and handle the HA via something like haproxy /
keepalived to keep the entire experience seamless to the user.


You will need to set up the oVirt engine service as well as the PG
database (and ovirt-engine-dwhd service and any other service we
run next to the engine) as highly available module.
In pacemaker[1], for example.
You'll need to ensure configuration is also sync'ed between nodes,
etc.
Y.

So already have one ovirt engine setup separately on a vm that
manages two remote physical hosts.  So familiar with the single host
approach which I would simply replicate.  At least that’s the idea
anyway.  Could you please expand a bit on the highly available
module and  syncing the config between hosts?


That's a different strategy, which is also legit - you treat this VM as
a highly available resource. Now you do not need to sync the config -
just the VM disk and config.

I think there's a postgres component too and if oVirt engine keeps all
it's date on the postgres tables, then synchronizing this piece might be
all I need?  I'm not sure how the separate oVirt engines sitting on
various separate physical hosts keep their settings in sync about the
rest of the physicals in an oVirt environment. (Assume we may have 100
oVirt physicals for example.)

Perhaps something like
https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html
.

But if you are already doing that, I'm not sure why you'd prefer this
over hosted-engine setup.

I'm comparing both options.  I really don't want to ask too many
specific until I have the chance to read into the details of both.

Y.

Cheers,
Tom



Cheers,
Tom


[1] https://clusterlabs.org/quickstart-redhat.html



From what I've seen in oVirt, that seems to be possible
without the two oVirt engines even knowing each other's
existence but is it something anyone has ever done?  Any
recommendations in this case?

Having settings replicated would be a bonus but I would be
comfortable if they weren't and I handle that myself.

--
Cheers,
Tom K.
-

Living on earth is expensive, but it includes a free trip
around the sun.

___
Users mailing list
Users@ovirt.org 
http://lists.ovirt.org/mailman/listinfo/users



--
Cheers,
Tom K.
-

Living on earth is expensive, but it includes a free trip around the sun.

___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users



___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt non-self-hosted HA

[TomK]

On 4/4/2018 3:11 AM, Yaniv Kaul wrote:



On Wed, Apr 4, 2018 at 12:39 AM, Tom > wrote:




Sent from my iPhone

On Apr 3, 2018, at 9:32 AM, Yaniv Kaul mailto:yk...@redhat.com>> wrote:




On Tue, Apr 3, 2018 at 3:12 PM, TomK mailto:tomk...@mdevsys.com>> wrote:

Hey Guy's,

If I'm looking to setup the oVirt engine in an HA
configuration off the physical servers hosting my VM's (non
self hosted), what are my options here?

I want to setup two to four active oVirt engine instances
elsewhere and handle the HA via something like haproxy /
keepalived to keep the entire experience seamless to the user.


You will need to set up the oVirt engine service as well as the PG
database (and ovirt-engine-dwhd service and any other service we
run next to the engine) as highly available module.
In pacemaker[1], for example.
You'll need to ensure configuration is also sync'ed between nodes,
etc.
Y.


So already have one ovirt engine setup separately on a vm that
manages two remote physical hosts.  So familiar with the single host
approach which I would simply replicate.  At least that’s the idea
anyway.  Could you please expand a bit on the highly available
module and  syncing the config between hosts?


That's a different strategy, which is also legit - you treat this VM as 
a highly available resource. Now you do not need to sync the config - 
just the VM disk and config.


I think there's a postgres component too and if oVirt engine keeps all 
it's date on the postgres tables, then synchronizing this piece might be 
all I need?  I'm not sure how the separate oVirt engines sitting on 
various separate physical hosts keep their settings in sync about the 
rest of the physicals in an oVirt environment. (Assume we may have 100 
oVirt physicals for example.)


Perhaps something like 
https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html 
.


But if you are already doing that, I'm not sure why you'd prefer this 
over hosted-engine setup.


I'm comparing both options.  I really don't want to ask too many 
specific until I have the chance to read into the details of both.



Y.


Cheers,
Tom




Cheers,
Tom



[1] https://clusterlabs.org/quickstart-redhat.html



From what I've seen in oVirt, that seems to be possible
without the two oVirt engines even knowing each other's
existence but is it something anyone has ever done?  Any
recommendations in this case?

Having settings replicated would be a bonus but I would be
comfortable if they weren't and I handle that myself.

-- 
Cheers,

Tom K.

-

Living on earth is expensive, but it includes a free trip
around the sun.

___
Users mailing list
Users@ovirt.org 
http://lists.ovirt.org/mailman/listinfo/users








--
Cheers,
Tom K.
-

Living on earth is expensive, but it includes a free trip around the sun.

___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt non-self-hosted HA

[Yaniv Kaul]

On Wed, Apr 4, 2018 at 12:39 AM, Tom  wrote:

>
>
> Sent from my iPhone
>
> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul  wrote:
>
>
>
> On Tue, Apr 3, 2018 at 3:12 PM, TomK  wrote:
>
>> Hey Guy's,
>>
>> If I'm looking to setup the oVirt engine in an HA configuration off the
>> physical servers hosting my VM's (non self hosted), what are my options
>> here?
>>
>> I want to setup two to four active oVirt engine instances elsewhere and
>> handle the HA via something like haproxy / keepalived to keep the entire
>> experience seamless to the user.
>>
>
> You will need to set up the oVirt engine service as well as the PG
> database (and ovirt-engine-dwhd service and any other service we run next
> to the engine) as highly available module.
> In pacemaker[1], for example.
> You'll need to ensure configuration is also sync'ed between nodes, etc.
> Y.
>
>
> So already have one ovirt engine setup separately on a vm that manages two
> remote physical hosts.  So familiar with the single host approach which I
> would simply replicate.  At least that’s the idea anyway.  Could you please
> expand a bit on the highly available module and  syncing the config between
> hosts?
>

That's a different strategy, which is also legit - you treat this VM as a
highly available resource. Now you do not need to sync the config - just
the VM disk and config.
Perhaps something like
https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html
.

But if you are already doing that, I'm not sure why you'd prefer this over
hosted-engine setup.
Y.

>
> Cheers,
> Tom
>
>
> [1] https://clusterlabs.org/quickstart-redhat.html
>
>>
>> From what I've seen in oVirt, that seems to be possible without the two
>> oVirt engines even knowing each other's existence but is it something
>> anyone has ever done?  Any recommendations in this case?
>>
>> Having settings replicated would be a bonus but I would be comfortable if
>> they weren't and I handle that myself.
>>
>> --
>> Cheers,
>> Tom K.
>> 
>> -
>>
>> Living on earth is expensive, but it includes a free trip around the sun.
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt non-self-hosted HA

[Tom]

Sent from my iPhone

> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul  wrote:
> 
> 
> 
>> On Tue, Apr 3, 2018 at 3:12 PM, TomK  wrote:
>> Hey Guy's,
>> 
>> If I'm looking to setup the oVirt engine in an HA configuration off the 
>> physical servers hosting my VM's (non self hosted), what are my options here?
>> 
>> I want to setup two to four active oVirt engine instances elsewhere and 
>> handle the HA via something like haproxy / keepalived to keep the entire 
>> experience seamless to the user.
> 
> You will need to set up the oVirt engine service as well as the PG database 
> (and ovirt-engine-dwhd service and any other service we run next to the 
> engine) as highly available module.
> In pacemaker[1], for example. 
> You'll need to ensure configuration is also sync'ed between nodes, etc.
> Y.

So already have one ovirt engine setup separately on a vm that manages two 
remote physical hosts.  So familiar with the single host approach which I would 
simply replicate.  At least that’s the idea anyway.  Could you please expand a 
bit on the highly available module and  syncing the config between hosts?

Cheers,
Tom

> 
> [1] https://clusterlabs.org/quickstart-redhat.html
>> 
>> From what I've seen in oVirt, that seems to be possible without the two 
>> oVirt engines even knowing each other's existence but is it something anyone 
>> has ever done?  Any recommendations in this case?
>> 
>> Having settings replicated would be a bonus but I would be comfortable if 
>> they weren't and I handle that myself.
>> 
>> -- 
>> Cheers,
>> Tom K.
>> -
>> 
>> Living on earth is expensive, but it includes a free trip around the sun.
>> 
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
> 
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Re: [ovirt-users] oVirt non-self-hosted HA

[Yaniv Kaul]

On Tue, Apr 3, 2018 at 3:12 PM, TomK  wrote:

> Hey Guy's,
>
> If I'm looking to setup the oVirt engine in an HA configuration off the
> physical servers hosting my VM's (non self hosted), what are my options
> here?
>
> I want to setup two to four active oVirt engine instances elsewhere and
> handle the HA via something like haproxy / keepalived to keep the entire
> experience seamless to the user.
>

You will need to set up the oVirt engine service as well as the PG database
(and ovirt-engine-dwhd service and any other service we run next to the
engine) as highly available module.
In pacemaker[1], for example.
You'll need to ensure configuration is also sync'ed between nodes, etc.
Y.

[1] https://clusterlabs.org/quickstart-redhat.html

>
> From what I've seen in oVirt, that seems to be possible without the two
> oVirt engines even knowing each other's existence but is it something
> anyone has ever done?  Any recommendations in this case?
>
> Having settings replicated would be a bonus but I would be comfortable if
> they weren't and I handle that myself.
>
> --
> Cheers,
> Tom K.
> 
> -
>
> Living on earth is expensive, but it includes a free trip around the sun.
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
___
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Re: [ovirt-users] oVirt non-self-hosted HA

[Johan Bernhardsson]

Hi,

It's not entirely clear what you want to do.

Ovirt is an interface that will control hardware nodes that runs virtual 
servers. It's similar to vmwares vsphere.


The engine need to be replicated so that if one goes down the other have 
the exact same information.


/Johan


On April 3, 2018 14:16:14 TomK  wrote:

Hey Guy's,

If I'm looking to setup the oVirt engine in an HA configuration off the
physical servers hosting my VM's (non self hosted), what are my options
here?

I want to setup two to four active oVirt engine instances elsewhere and
handle the HA via something like haproxy / keepalived to keep the entire
experience seamless to the user.


From what I've seen in oVirt, that seems to be possible without the two

oVirt engines even knowing each other's existence but is it something
anyone has ever done?  Any recommendations in this case?

Having settings replicated would be a bonus but I would be comfortable
if they weren't and I handle that myself.

--
Cheers,
Tom K.
-

Living on earth is expensive, but it includes a free trip around the sun.

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