Redis Server Failure when server starts

Question

When I start redis on OSX, it exits because it says it can't handle RDB format version 7. Here's the output:

Server started, Redis version 3.0.7
Can't handle RDB format version 7
Fatal error loading the DB: Invalid argument. Exiting.

The redis gem version in the gemfile was 3.2.2, but I changed it to 3.0.7 to see if that would make it work. It didn't.

How do I fix this? I don't have anything important in there so I'm fine with resetting it to another version or uninstall and reinstall redis.

Nanci

Simply delete the dump.rdb file - it is incompatible with the version that you're running – Tace

where to find this file? – Shu

@ArunGowda It is here on Win10 - C:\Program Files\Redis – Marvelous

@ArunGowda In Linux, type "CONFIG get dir" in redis-cli prompt to get location detail. Default location will be "/var/lib/redis" – Hughie

Answer 1

I SOLVED the problem by deleting the /home/marco/dump.rdb file from redis folder.

Tajuanatak

I too deleted my dump.rdb file from Redis folder and it worked for me. – Marvelous

A location for dump.rdb could be found in /etc/redis/redis.conf, search for "dir", a working directory. For me it was /var/lib/redis/ on Ubuntu and deleting dump.rdb got me over this error. – Extrorse

Answer 2

Thanks Itamar. I ended up uninstalling and reinstalling via Homebrew. That was easiest solution for me since I didn't have any important info in the db.

 brew uninstall redis
 brew install redis 

3.0.x is incompatible with 3.2.x so upgrading to 3.2.4 fixed it for me.

Nanci

Answer 3

I had this in docker upon changing redis versions. Had to completely stop the container and remove volumes and restart it.

docker-compose.yml

services:
  redis:
    image: redis:6.2.6-alpine

docker-compose down -v redis
docker-compose up redis

Rosauraroscius

docker-compose down fixed it for me – Orelle

Answer 4

The same issue happened to me on 6.2.4 & I solved using this process

1. Search the Dump.rdb file

   sudo find / -name *.rdb

For Ubuntu20 You'll find it under /var/lib/redis/dump.rdb

2. Delete the file dump.rdb

   sudo rm /var/lib/redis/dump.rdb

3. Restart Redis & Check the Status

   sudo systemctl restart redis-server

   systemctl status redis-server.service

Fluoresce