Redis: Failed opening .rdb for saving: Permission denied

Question

I have a redis server 2.8 installed using ubuntu apt-get on ubuntu 12.04.

I have copied a dump.rdb from an other database. Now when I try to start the new server, I

Answer 1

The lock file in the log directory is what was causing this error for me. I was able to clear the error by deleting the lock file:

rm /var/log/redis/lock.

This happened when another system was restored to this one while redis was still running.

Answer 2

Check the configuration 'dbfilename' in your redis.conf. Your redis running process have no write permission in the path.

Answer 3

My /lib/system/systemd/redis-server.service file contained the following:

ReadOnlyDirectories=/
ReadWriteDirectories=-/var/lib/redis

My /etc/redis/redis.conf file stated that the database should be located in /data/redis

dir /data/redis

The systemd config file above effectively makes /data/redis read-only.

Once I changed the redis.conf file to read:

dir /var/lib/redis

I stopped getting the error.

Answer 4

In my case all rights were correct(I mean that the most stared answer doesn't help me). BUT! Redis used an incorrect path to file. In config it was correct, but from rails-cli it returned '/proc'. This answer helped me - https://serverfault.com/questions/800295/redis-spontaneously-failed-failed-opening-rdb-for-saving-permission-denied

Warning

For exact question it doesn't matter, but my situation looked like someone hacked server. Link to explanation. So check your setup properly.

Answer 5

I had the same issue with redis used by Sidekiq in Rails application, rm -rf ./tmp/ worked like charm.

Answer 6

No one hasn't mentioned about SELinux. On Centos most probably you will have such error when selinux mode = enforcing.

Just check getenforce and if it set to 'enforcing' , hit setenforce 0 and try one more time to run service.