The final upgrade from 2.0 to 2.1.8 (latest) has been successful by following the standard steps, except for a single retry due to a known issue at the Add AttachmentFolder.is_hidden stage of the upgrade.
Just to sum up, here are the steps we have taken:
- with CentOS5 + Python2.4
- Install ZODB3 and its dependencies which are the requirements for the Indico 0.96
- Start the ZODB running by correctly writing the config files
- Run the TZMigration.py for Indico 0.96.2
- with CentOS6.9 + Python2.6
- Install Indico 0.97.1 and migrate from 0.96.2 to 0.97.1; commenting out the part where it asks for the
cds-indico-extras - Install Indico 1.2.2 and migrate from 0.97.1 to 1.2.2, also ignoring error-emitting parts
- with CentOS7 + Python2.7.5
- Use the distributed migration tool to migrate up to 2.0, also ignoring error-emitting parts
- Use the standard method of upgrading to the latest 2.1.8
Thank you for all the support!
(and we will make sure that the upgrade is done more often!)