JAVA J2EE 4 U

 etcdctl --endpoints=http://127.0.0.1:2379 \

  endpoint status --write-out=json |

python3 -c '

import json

import sys

data = json.load(sys.stdin)

print("{:<30} {:>12} {:>12} {:>16} {:>12}".format(

    "ENDPOINT", "DB_MiB", "IN_USE_MiB", "FRAGMENTED_MiB", "FRAG_%"

))

for item in data:

    status = item["Status"]

    total = status.get("dbSize", 0)

    used = status.get("dbSizeInUse", 0)

    fragmented = max(total - used, 0)

    percentage = fragmented * 100 / total if total else 0

    print("{:<30} {:>12.2f} {:>12.2f} {:>16.2f} {:>11.2f}%".format(

        item["Endpoint"],

        total / 1048576,

        used / 1048576,

        fragmented / 1048576,

        percentage

    ))

'