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<p style="margin-top:0;margin-bottom:0">Sorry to ask again, But I can see from the link below the that nodes and engines should work between minor number </p>
<p style="margin-top:0;margin-bottom:0">upgrades. But is ovirt 4.2.x backward compatible with, say, 3.6 nodes. Does anyone know ? Is this documented anywhere ? </p>
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<p style="margin-top:0;margin-bottom:0"><span>[ovirt-users] compatibility relationship between datacenter, ovirt and cluster</span><br>
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<a href="https://www.mail-archive.com/users@ovirt.org/msg17092.html" class="OWAAutoLink">https://www.mail-archive.com/users@ovirt.org/msg17092.html</a>
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Thanks,
<div>Joe.<br>
<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Joseph Kelly<br>
<b>Sent:</b> Wednesday, March 14, 2018 5:32 PM<br>
<b>To:</b> users@ovirt.org<br>
<b>Subject:</b> Query about running ovirt-4.2.1 engine support 3.x nodes ? </font>
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<p style="margin-top:0; margin-bottom:0">Hello All,</p>
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<p style="margin-top:0; margin-bottom:0">I have two hopefully easy questions regarding an <span>ovirt-4.2.1 engine support and 3.x nodes ? </span></p>
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<p style="margin-top:0; margin-bottom:0">1) Does an <span>ovirt-4.2.x engine support 3.x nodes ? As This page states:</span></p>
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<p style="margin-top:0; margin-bottom:0"><span>"The cluster compatibility is set according to the version of the least capable host operating system in the cluster."</span><br>
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<p style="margin-top:0; margin-bottom:0"><a href="https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/" class="x_OWAAutoLink">https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/</a><br>
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<p style="margin-top:0; margin-bottom:0"><span style="font-size:10pt">Which seems to indicate that you can run say a 4.2.1 engine with lower version nodes, but is that correct ?</span></p>
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</span></p>
<p style="margin-top:0; margin-bottom:0"><span style="font-size:10pt">2) And can you just upgrade the nodes directly from 3.x to 4.2.x as per these steps ?</span></p>
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</span></p>
<p style="margin-top:0; margin-bottom:0"><span style="font-size:10pt"></span></p>
<div>1. Move the node to maintenance<br>
2. Add 4.2.x repos<br>
3. yum update<br>
4. reboot<br>
5. Activate (exit maintenance)</div>
<br>
<p></p>
<p style="margin-top:0; margin-bottom:0"><span style="font-size:10pt">I've looked in the release notes but wasn't able to find much detail on ovirt-nodes upgrades.</span></p>
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</span></p>
<p style="margin-top:0; margin-bottom:0"><span style="font-size:10pt">Thanks,</span></p>
<p style="margin-top:0; margin-bottom:0"><span style="font-size:10pt">Joe.</span></p>
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</span></p>
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