error: Unit mongodb.service is masked when starting mongodb

Question

I'm trying to install kaa(IOT platform) on installing the dependencies getting an error on executing the command-

$ sudo systemctl start mongodb
error- Failed to start mongodb.service: Unit mongodb.service is masked.

Rinzwind · Accepted Answer · 2019-06-26T16:03:40.277

44

Unit mongodb.service is masked.

So unmask it:

sudo systemctl unmask mongodb

edited Jun 26 '19 at 16:03

answered May 26 '17 at 11:33

Rinzwind

4

I also received this error after installing mongodb-org. Why was it masked by default? What does that mean to be masked? – Cerin Feb 06 '18 at 18:24
sorry. no it does not, is UNMASKS the service file. where do you see an "rm" in this command? Please read up on what masks/unmasks means And the topic starter agrees with me ;-) – Rinzwind Jun 26 '19 at 12:12
Just another stupid systemd "feature". Systemd is full of charming "surprises". Like [PrivateTmp](https://unix.stackexchange.com/questions/448056/systemd-private-tmp-on-debian-cant-disable-it-on-the-right-way), which silently writes things you intend to go into `/tmp` into some "magic" directory in Never-Never Land... – FoggyDay Oct 17 '19 at 18:24

score 9 · Answer 2 · answered Jun 08 '18 at 08:35

9

With 3+ version of mongodb. You dont have to start mongodb but you just have to start mongod. So proper way to start mongod will be

sudo systemctl start mongod

answered Jun 08 '18 at 08:35

Hammad

5

`Failed to start mongod.service: Unit mongod.service not found`. Change `mongod `to `mongodb` and hte result is `Failed to start mongodb.service: Unit mongodb.service is masked.` – Craig Hicks Jun 10 '18 at 17:06
Yup. By default, you still have to "unmask" it: `sudo systemctl unmask mongodb`. Silly, silly, silly. But at least it's documented. Sort of... – FoggyDay Oct 17 '19 at 18:28

2 Answers2