Sudo systemctl start mongod not working

Ops and Admin Installation & Upgrades
1

Hello,

I installed mongodb according to https://www.mongodb.com/docs/manual/tutorial/install-mongodb-on-ubuntu/ on ubuntu 20.04. I adhered the guide and did not change any configuration files or anything else. Now, when I run “sudo systemctl start mongod” the terminal just executes the command but no output is produced. Running “sudo systemctl status mongod” gives:

mongod.service - MongoDB Database Server
     Loaded: loaded (/lib/systemd/system/mongod.service; disabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Sun 2022-03-27 15:18:13 CEST; 19s ago
       Docs: https://docs.mongodb.org/manual
    Process: 54971 ExecStart=/usr/bin/mongod --config /etc/mongod.conf (code=exited, status=14)
   Main PID: 54971 (code=exited, status=14)

Can somebody tell me what I have done wrong? Many thanks!

2

@peter_parker We may not be able to tell you what’s wrong but the system logs should be able to tell you!

cd /var/log and check the syslog and any mongo* logs.

4

Thanks for your answer, it turns out that I had to change the write permission to the /var/lib/mongodb folder

2 Likes
5

Excellent, have fun with MongoDB1

6

┌──(root💀kali)-[/home/stark]
└─# systemctl start mongod.service 3 ⨯

┌──(root💀kali)-[/home/stark]
└─# systemctl status mongod.service
× mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)
Active: failed (Result: signal) since Mon 2022-05-02 15:57:15 IST; 1s ago
Docs: https://docs.mongodb.org/manual
Process: 2351 ExecStart=/usr/bin/mongod --config /etc/mongod.conf (code=killed, signal=ILL)
Main PID: 2351 (code=killed, signal=ILL)
CPU: 17ms

May 02 15:57:15 kali systemd[1]: Started MongoDB Database Server.
May 02 15:57:15 kali systemd[1]: mongod.service: Main process exited, code=killed, status=4/ILL
May 02 15:57:15 kali systemd[1]: mongod.service: Failed with result ‘signal’.

7

please help me this error show my laptop when i put these command
i used hp8440p laptopi5 i have linux os debian
and i have win10 in my laptop here is work mongo but
not working in my linux os thro me this error please resolve this

8

It terminated with SIGILL it means your CPU is INcompatible with the version of mongod you are trying to use.

Search the forum with signal=ILL for potential solution.

Thanks @Ramachandra_Tummala for the correction.

1 Like
9

steevej i think you meant incompatible

1 Like
10

I don’t understand what want to say
Please answer me in docs type

11

The CPU in your laptop is probably an i5-520M.
That CPU does not support the AVX instruction.
Therefore, it will not run the latest versions of MongoDB.

1 Like
12

New here so be kind pls.

Getting this error when trying to install Mongo 5 on Ubuntu release 20.04 LTS 64.
mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
Active: failed (Result: core-dump) since Fri 2023-02-17 22:23:04 EST; 31s ago
Docs: https://docs.mongodb.org/manual
Process: 7221 ExecStart=/usr/bin/mongod --config /etc/mongod.conf (code=dumped, signal=ILL)
Main PID: 7221 (code=dumped, signal=ILL)

Tried to uninstall and reinstall.

Output from log:
kernel: [ 3782.753092] traps: mongod[7221] trap invalid opcode ip:555b528a19da sp:7ffca788f9b0 error:0 in mongod[555b4e821000+51e5000]
Feb 17 22:23:04 MobileMoe13 systemd[1]: mongod.service: Main process exited, code=dumped, status=4/ILL
Feb 17 22:23:04 MobileMoe13 systemd[1]: mongod.service: Failed with result ‘core-dump’.
Feb 17 22:25:57 MobileMoe13 PackageKit: daemon quit

Thanks in advanced.

13

ILL means illegal instruction
I think your cpu architecture not supporting the mongodb you are installing
Check this link

2 Likes
14

Remove the mongodb-27017.sock file:

sudo rm -rf /tmp/mongodb-27017.sock

Then start mongod service again:

sudo systemctl start mongod
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