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</style></head><body style=""><div>Hi,</div>
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<div>my name is Michael, I am working at the <span>Baden-Wuerttemberg Cooperative State University Mannheim.</span></div>
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<div><span>We have an installation of OpenStack with roundabout 14 nodes each 32 cores (1 controller (glance,keystone, etc.), 1 neutron, 2 objectstores, 1 blockstore, 9 compute nodes) the blockstore, the objectstore and the compute nodes uses a storage node over iSCSI with multipath to store the data, virtual machines etc. The glance image service uses the objectstore as storage for the images.</span></div>
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<div>At the moment we are running Juno release and we want to upgrade the installation to Mitaka without loosing any data (users, images, volumes, virtual machines, etc.). I already try to find documentation how such an upgrade should be performed but I didn't find any well described how to do this.</div>
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<div>So the following questions has arised:</div>
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<div>What is the best way to performe an upgrade from Juno to Mitaka?</div>
<div>Is the best way to upgrade from Juno -> Kilo -> Liberty -> Mitaka or is it possible to migrate directly to mitaka?</div>
<div>Is it better to perform an inplace upgrade or is the beter solution to setup a new environment?</div>
<div>What is the best way to save the existing data to import it in an new environment?</div>
Is there any well described how to or best practise guide for such an upgrade?
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<div>Any ideas or help would be welcome :-)</div>
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<div>Kind regards,</div>
<div>Michael</div>
<div><br><br><br>Michael Stang<br>Laboringenieur, Dipl. Inf. (FH)<br><br>Duale Hochschule Baden-Württemberg Mannheim<br>Baden-Wuerttemberg Cooperative State University Mannheim<br>ZeMath Zentrum für mathematisch-naturwissenschaftliches Basiswissen<br>Fachbereich Informatik, Fakultät Technik<br>Coblitzallee 1-9<br>68163 Mannheim<br><br>zemath@dhbw-mannheim.de<br>http://www.dhbw-mannheim.de<br><br><img src="http://www.dhbw-mannheim.de/fileadmin/media/mail/signatur/dhbw_logo_mail.jpg" border="0"><br><br> <br><br><br></div></body></html>