Tool to dump and restore Redis database. See instructions.md

instructions.md

Overview

A tool to dump a Redis server to a JSON file and then restore this file to another server.

Written to always dump and restore to database 0.

Instructions

Uses Python. To use the script:

1. Install the redis package:

   pip install redis
   

2. Dump a Redis server:

   python ./redis-dump-restore.py <host of dump redis> dump
   

3. Restore to a Redis server:

   python ./redis-dump-restore.py <host of restore redis> restore
   

redis-dump-restore.py

import redis
import argparse
import json

parser = argparse.ArgumentParser()
parser.add_argument(
    'host',
    type=str,
)
parser.add_argument(
    'action',
    type=str,
    choices=['dump', 'restore'],
)

args = parser.parse_args()

client = redis.Redis(host=args.host)

if args.action == 'dump':
    values = {}
    for key in client.keys("*"):
        key = key.decode("utf-8")
        values[key] = client.get(key).decode("utf-8")
        print(f"dumped {key}")

    with open("dump.json", "w") as f:
        json.dump(values, f)
elif args.action == 'restore':
    with open("dump.json", "r") as f:
        values = json.load(f)

        for key in values:
            client.set(key, values[key])
            print(f"restored {key}")