Failed to start redis.service: Unit redis-server.service is masked

Question

I Installed Redis Server on ubuntu 16.04. but when I try to start the redis service using ``` $ sudo systemctl start redis ``` I receive message: ``` Failed to start redis.service: Unit redis-server.service is masked. ``` I don't have any idea about this error.

Accepted Answer

I found the solution. I think it will help for others | systemctl unmask servicename

```
$ sudo systemctl unmask  redis-server.service
```

Failed to start redis.service: Unit redis-server.service is masked

Solution

Problem