1. Check the Redis logs:
Look at the Redis log files (usually located in /var/log/redis/ or as specified in your configuration file) for detailed information about the cause of the error.
2. Check disk space:
Make sure your server has enough disk space. Use the following command to check disk usage:
bash
df -h
If disk space is low, clean up some unnecessary files.
3. Check file permissions:
Ensure that Redis can write to the directory where its RDB files are located. You can find the dir directive in the Redis configuration file to confirm the permission settings for that directory.
Permissions can be checked using the following command:
ls -ld /path/to/redis/directory
4. Modify the Redis configuration:
You can set stop-writes-on-bgsave-error to no in the Redis configuration file.This will allow Redis to continue writing if the snapshot fails, but note that this may result in data loss.
Find the file and change the following line to:
stop-writes-on-bgsave-error no
Then restart the Redis service:
sudo systemctl restart redis
5. Check the RDB and AOF configuration: