Make a no replication ring if you need it

make_no_replication_ring.py

#!/usr/bin/env python
from argparse import ArgumentParser
import sys
import os

from swift.common.ring import RingData

parser = ArgumentParser()
parser.add_argument('ring', help='path to a ring')
parser.add_argument('--output', default=None, help='override output path')


def main():
    args = parser.parse_args()
    r = RingData.load(args.ring)
    for dev in r.devs:
        if not dev:
            continue
        dev['replication_ip'] = dev['ip']
        dev['replication_port'] = dev['port']
    if not args.output:
        path_part, filename = os.path.split(args.ring)
        name, ext = filename.split('.', 1)
        name += '-no-replication'
        newname = '%s.%s' % (name, ext)
        args.output = os.path.join(path_part, newname)
    r.save(args.output)
    print('wrote: %s' % args.output)


if __name__ == "__main__":
    sys.exit(main())