Error: failed to stop redis-server.service unit redis-server.service not loaded

What's Causing This Error

The error message 'failed to stop redis-server.service unit redis-server.service not loaded' indicates that the Redis server service is not currently running on the system, but the command to stop the service has been executed. This means that there is no process with the name 'redis-server.service' that can be stopped, resulting in the error message.

The most common reason for this error is that Redis was not installed as a service or was uninstalled from the system, and hence, the service unit file is missing. Another possible reason is that the Redis service may have been disabled or masked, preventing it from starting automatically at boot time.

Solution - Here's How To Resolve It

To resolve this error, you need to ensure that the Redis service is installed and running correctly. If Redis was not installed as a service, you can install it using the appropriate package manager for your system. Once installed, you can start the Redis service by executing the command sudo systemctl start redis-server.service.

In case Redis was previously installed but has been uninstalled or disabled, you can reinstall and enable the service using the following commands:

sudo apt-get install redis-server
sudo systemctl enable redis-server.service
sudo systemctl start redis-server.service

If the Redis service still fails to start after installation, you can check the Redis logs for any errors or configuration issues that may be causing the problem. The Redis logs can be found in the default location /var/log/redis/redis.log.