Create and edit /etc/swift/swift.conf and add the following lines to it:
[swift-hash]
# random unique (preferably alphanumeric) string that can never change (DO NOT LOSE)
swift_hash_path_suffix = {place_random_unique_string_here}
You will need the random string when you add more nodes to the setup. So never lose the string.
You can generate a random string by running the following command:
od -t x8 -N 8 -A n < /dev/random
