you need get the backup, clear the installation, going to control panel, programs and remove the installation. After this, you need go to register of the windows, cmd -> regedit and search for all the informations about tableau and delete this.
Reset the windows server and install the new installation.
I recently had a failed 10.5 to 2018.2 upgrade, so I was in a similar situation...
I had to:
Save my tabsvc.yml file
Save all my configuration to a file with: tabadmin configure --output filename.cfg
Uninstall 10.5 using Control Panel
Save the uninstall backup to a safe place
Run the obliterate script
Do some cleanup of lingering directories and Tableau registry entries
Clean install Tableau Server 2018.2 as a single node
Restored latest 10.5 backup with no config option (yes, it worked)
Reconfigure manually using parts from my tabsvc.yml and my saved config file
Add additional nodes
Luckily I was doing this on my non-prod system. If you can test this before doing it on your live system, that would be good.
I don't know where to start from your inquiry. What do you really want to do?
Clean install or restore? or?
This is basically what I ended up doing. Thankfully we're on the small side in terms of installation, i.e. single node, so removing the entire instance (using obliterate) and then restoring the previous back-up to the previously installed version worked. (And was only really just time consuming)
I previously had a failed upgrade but did a clean install of 2018.2-2 and everything seemed fine until I tried to restore the backup I saved from 10.5. This is what I see in the log file "No asset_keys.yml file found in the backup file."
I'm wondering if reinstalling 10.5 and following your above steps would solve my problem. It's also worth mentioning that I didn't use obliterate when I removed 10.5, I just copied and deleted the Tableau server folders in program files and program data. I could probably copy them back and reinstall 10.5.
Please let me know if you have any other ideas.
Not sure, but maybe you have a bad backup? Do you have the backup that's automatically created when you uninstall? Maybe try that one. -Brad
Yes I do. I've tried both my manual backup and the backup it made when I uninstalled with control panel.
I've submitted a support ticket but with what I'm hearing, it might take too long and I might just have to downgrade to the 10.5 again.
Thank you, Sam.