Re: [ovirt-users] Query about running ovirt-4.2.1 engine support 3.x nodes ?

2018-03-19 Thread Yedidyah Bar David 
On Mon, Mar 19, 2018 at 5:19 AM, Joseph Kelly <
joseph.ke...@tradingscreen.com> wrote:

> Sorry to ask again, But I can see from the link below the that nodes and
> engines should work between minor number
>
> upgrades.
>

Indeed.


> But is ovirt 4.2.x backward compatible with, say, 3.6 nodes. Does anyone
> know ? Is this documented  anywhere ?
>

You can search the release notes pages of 4.2.z releases for '3.6' to find
relevant bugs.

Just _using_ such hosts, should work.

Adding a 3.6 host to a 4.2 engine will likely break.

It's definitely not intended to be used for long times - you are encouraged
to upgrade your hosts too, soon after the engine.

If you plan a very long transition period, I suggest to create a list of
operations you might want/need to do, and test everything in a test
environment.


>
> [ovirt-users] compatibility relationship between datacenter, ovirt and
> cluster
> https://www.mail-archive.com/users@ovirt.org/msg17092.html
>
> Thanks,
> Joe.
>
> --
> *From:* Joseph Kelly
> *Sent:* Wednesday, March 14, 2018 5:32 PM
> *To:* users@ovirt.org
> *Subject:* Query about running ovirt-4.2.1 engine support 3.x nodes ?
>
>
> Hello All,
>
>
> I have two hopefully easy questions regarding an ovirt-4.2.1 engine
> support and 3.x nodes ?
>
>
> 1) Does an ovirt-4.2.x engine support 3.x nodes ? As This page states:
>
>
> "The cluster compatibility is set according to the version of the least
> capable host operating system in the cluster."
>
>
> https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/
>
>
> Which seems to indicate that you can run say a 4.2.1 engine with lower
> version nodes, but is that correct ?
>
>
> 2) And can you just upgrade the nodes directly from 3.x to 4.2.x as per
> these steps ?
>
>
> 1. Move the node to maintenance
> 2. Add 4.2.x repos
> 3. yum update
> 4. reboot
> 5. Activate (exit maintenance)
>

This should work. You can also use the admin web ui for updates, which
might be better, didn't check recently. See also e.g.:

https://bugzilla.redhat.com/show_bug.cgi?id=1344020

Best regards,
-- 
Didi
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Re: [ovirt-users] Query about running ovirt-4.2.1 engine support 3.x nodes ?

2018-03-18 Thread Joseph Kelly 
Sorry to ask again, But I can see from the link below the that nodes and 
engines should work between minor number

upgrades. But is ovirt 4.2.x backward compatible with, say, 3.6 nodes. Does 
anyone know ? Is this documented  anywhere ?


[ovirt-users] compatibility relationship between datacenter, ovirt and cluster

https://www.mail-archive.com/users@ovirt.org/msg17092.html

Thanks,
Joe.


From: Joseph Kelly
Sent: Wednesday, March 14, 2018 5:32 PM
To: users@ovirt.org
Subject: Query about running ovirt-4.2.1 engine support 3.x nodes ?


Hello All,


I have two hopefully easy questions regarding an ovirt-4.2.1 engine support and 
3.x nodes ?


1) Does an ovirt-4.2.x engine support 3.x nodes ? As This page states:


"The cluster compatibility is set according to the version of the least capable 
host operating system in the cluster."


https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/


Which seems to indicate that you can run say a 4.2.1 engine with lower version 
nodes, but is that correct ?


2) And can you just upgrade the nodes directly from 3.x to 4.2.x as per these 
steps ?


1. Move the node to maintenance
2. Add 4.2.x repos
3. yum update
4. reboot
5. Activate (exit maintenance)


I've looked in the release notes but wasn't able to find much detail on 
ovirt-nodes upgrades.


Thanks,

Joe.


--
J. Kelly
Infrastructure Engineer
TradingScreen
www.tradingscreen.com

Follow TradingScreen on Twitter, 
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blog, Trading Smarter

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[ovirt-users] Query about running ovirt-4.2.1 engine support 3.x nodes ?

2018-03-14 Thread Joseph Kelly 
Hello All,


I have two hopefully easy questions regarding an ovirt-4.2.1 engine support and 
3.x nodes ?


1) Does an ovirt-4.2.x engine support 3.x nodes ? As This page states:


"The cluster compatibility is set according to the version of the least capable 
host operating system in the cluster."


https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/


Which seems to indicate that you can run say a 4.2.1 engine with lower version 
nodes, but is that correct ?


2) And can you just upgrade the nodes directly from 3.x to 4.2.x as per these 
steps ?


1. Move the node to maintenance
2. Add 4.2.x repos
3. yum update
4. reboot
5. Activate (exit maintenance)


I've looked in the release notes but wasn't able to find much detail on 
ovirt-nodes upgrades.


Thanks,

Joe.


--
J. Kelly
Infrastructure Engineer
TradingScreen
www.tradingscreen.com

Follow TradingScreen on Twitter, 
Facebook, or our 
blog, Trading Smarter

This message is intended only for the recipient(s) named above and may contain 
confidential information. If you are not an intended recipient, you should not 
review, distribute or copy this message. Please notify the sender immediately 
by e-mail if you have received this message in error and delete it from your 
system.




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