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Then move/copy the backup tar to new server via whatever method you care to use, such as scp
If you are working with Production is a good idea to go onto Ansible and edit the group_var/kithe_production you are working on and put in the new private IP address for solr.
Commit the changes to the staging branch so you can easily merge a PR from staging to master to swap the IP address without waiting for staging to update.
On the new Solr machine
Logged in as ubuntu
Extra the tar tar xzf solr-backup.tar.gz to the /backups/solr-backup spot (or anywhere as long as the Solr user can access it)
You may need to pull the backup file from the extracted tar (i.e. if you extract it directly to /backups/solr-backup you may see it in /backups/solr-backup/backups/solr-backup/BACKUPNAME and wish to move the file to /backups/solr-backup/BACKUPNAME)
Make sure all files are owned by unix account and group solr: sudo chown -R solr:solr /backups/solr-backup
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