I'm attempting to setup MongoDB on Ubuntu 20.04.02 LTS by following the documentation. I have ensured this is a fresh install. However an error persists when I verify if the MongoDB install started succesfully by typing in:
sudo systemctl status mongod
● mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; disabled; vendor prese>
Active: failed (Result: core-dump) since Wed 2021-08-11 12:59:20 UTC; 49s >
Docs: https://docs.mongodb.org/manual
Process: 3190 ExecStart=/usr/bin/mongod --config /etc/mongod.conf (code=dum> Main PID: 3190 (code=dumped, signal=ILL)
Aug 11 12:59:19 discorddomagoj systemd1: Started MongoDB Database
Server. Aug 11 12:59:20 discorddomagoj systemd1: mongod.service:
Main process exited,> Aug 11 12:59:20 discorddomagoj systemd1:
mongod.service: Failed with result '>
Picture of problem for clarity:
1.Stop the mongod process by issuing the following command:-
sudo service mongod stop
2.Remove any MongoDB packages that you had previously installed:-
sudo apt-get purge mongodb-org*
3.Remove MongoDB databases and log files:-
sudo rm -r /var/log/mongodb
sudo rm -r /var/lib/mongodb
4.Then reinstall mangodb 4.4.8
5.Import the public key used by the package management system:-
wget -qO - https://www.mongodb.org/static/pgp/server-4.4.asc | sudo apt-key add -
6.The following instruction is for Ubuntu 20.04 (Focal):-
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/4.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list
7.Update Apt
sudo apt-get update
8.Install mongodb
sudo apt-get install mongodb-org=4.4.8 mongodb-org-server=4.4.8 mongodb-org-shell=4.4.8 mongodb-org-mongos=4.4.8 mongodb-org-tools=4.4.8
9.Use mongod --version to check its succesfully installed
10.If u encounter any error while using mongod
sudo mkdir /data
cd /data
sudo mkdir db
sudo pkill -f mongod
11.Then use sudo mongod command.
This error show CPU incompatibly with mongodb. if use proxmox set cpu mode to "HOST".
stop the db
sudo service mongod stop
uninstall it:
sudo apt-get purge mongodb-org*
Import the public key used by the package management system
wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add -
Create a list file for MongoDB.
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
Reload local package database
sudo apt-get update
Install a specific release of the MongoDB packages(this was the reason I had that similar error for not specifying the package)
sudo apt-get install -y mongodb-org=5.0.7 mongodb-org-database=5.0.7 mongodb-org-server=5.0.7 mongodb-org-shell=5.0.7 mongodb-org-mongos=5.0.7 mongodb-org-tools=5.0.7
lastly, on one tab of the terminal run:
sudo mongod
on another open the db:
mongo
I have same issue when installing mongodb on virtual machine with proxmox.
Changing processor from kvm to host or sandybridge(my actual pc) solved this problem. Reference link
This is an addition to #AbdulWahhab 's answer. I have recently seen many questions of same type: 'can't start mongodb#5.0.x server on ubuntu#20.0.4'. Having faced this issue myself, I found installing mongodb#4.4.8 version only way out. In addition consider that sudo apt-get update updates all packages including mongodb. Newer version of mongodb gets installed and server does not work anymore(as of 10th december 2021). To prevent unintended upgrades, you can pin the package at the currently installed version:
echo "mongodb-org hold" | sudo dpkg --set-selections
echo "mongodb-org-database hold" | sudo dpkg --set-selections
echo "mongodb-org-server hold" | sudo dpkg --set-selections
echo "mongodb-org-shell hold" | sudo dpkg --set-selections
echo "mongodb-org-mongos hold" | sudo dpkg --set-selections
echo "mongodb-org-tools hold" | sudo dpkg --set-selections
A possible reason for the dump is a change in the microarchitecture requirements of MongoDB introduced with version 5.0. This causes this exact issue on a Raspberry Pi for instance (see: MongoDB Forum).
This issue might be mitigated by building from source as described in the forum post. I haven't tried this though personally. Installing versions prior to 5.0 (as described by Abdul Wahhab) will solve the problem as well.
If you have tried all of the above solutions, and still can't help, please try to reboot the VM.
I am using 18.04 and initially installed 6.0 mongoDB and it just showed the core-dump error after issuing "sudo systemctl status mongod".
After doing some research, I tried to uninstall the 6.0 and then re-install 4.4, it still couldn't help.
Then I tried to re-install 4.2, it still couldn't help.
Finally, I tried to reboot the VM, then it works..
For MongoDB 5.0+
If you are running on VirtualBox with a Windows host, disable Hyper-V. The issue is a lack of AVX support and to get it you need to disable Hyper-V and be using VirtualBox 5.03 or later.
Using CMD as Administrator
bcdedit /set hypervisorlaunchtype off
DISM /Online /Disable-Feature:Microsoft-Hyper-V
Then hard shutdown and restart the host. After that, starting the guest from cold boot should work.
sudo systemctl start mongodb
sudo systemctl status mongodb
Source: https://forums.virtualbox.org/viewtopic.php?f=25&t=99390
I had the same problem on Ubuntu 22.10 and MongoDB 6.0.
I solved it by put it AVX to AUTO in BIOS.
Just for future help in case of someone else need help.
check if you have the java runtime environment (JRE), if not then install it:
sudo apt install default-jre
That' s all =)
I follow all the steps mention in MongoDB installation documents for Ubuntu 16.04.
Steps 1:
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5
Steps 2:
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.6.list
Steps 3:
sudo apt-get update
Steps 4:
sudo apt-get install -y mongodb-org
Steps 5:
sudo service mongod start
when I started MongoDB got an error as:
Failed to start mongod.service: Unit mongod.service not found.
Most probably unit mongodb.service is masked. Use following command to unmask it.
sudo systemctl unmask mongod
and re-run
sudo service mongod start
Please follow the below steps, it should work.
1 - Uninstall current installation completely
Source - official instructions
sudo service mongod stop
Remove Packages
sudo apt-get purge mongodb-org*
Remove the folders
sudo rm -r /var/log/mongodb
sudo rm -r /var/lib/mongodb
2 - Reinstall as described on official site, I will just write down the all steps. enter link description here
Import the public key
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5
Create a list file for Ubuntu 16.04
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.6.list
update the list
sudo apt-get update
Install the latest package
sudo apt-get install -y mongodb-org
3 - Now it should work, please try below command
sudo service mongod start
and check the status
mongo
it should appear the mongo shell
You are missing a 'b' I think?
sudo service mongod start
should be
sudo service mongodb start
I think this is the case?
Failed to start mongod.service: Unit mongod.service not found
If you are following the official doc and are coming across with the error above that means mongod.service is not enabled yet on you machine (I am talking about Ubuntu 16.04). You need to do that using following command
sudo systemctl enable mongod.service
Now you can start mongodb using the following command
sudo service mongod start
[Solution]
Just type
sudo mongod
It will work.
Case with me
Worked fine after the install; this problem occurred after I rebooted.
What worked for me is
sudo mkdir /var/lib/mongodb
sudo mkdir /var/log/mongodb
sudo chown -R mongodb:mongodb /var/lib/mongodb
sudo chown -R mongodb:mongodb /var/log/mongodb
After running the above commands open a new terminal and run:
sudo systemctl restart mongod
and run the mongo shell to check:
mongo
Note
If this problem occurs again (as with me every time I reboot), make it as a shell script to be run at startup.
Permanent solution (shell script at startup)
Step 1:
Make a file in the /etc/init.d directory
sudo gedit /etc/init.d/custom-mongo-fix.sh
Step 2:
Put below code in the file you just opened in Step 1
#!/bin/bash
# mongodb fix
sudo mkdir /var/lib/mongodb
sudo mkdir /var/log/mongodb
sudo chown -R mongodb:mongodb /var/lib/mongodb
sudo chown -R mongodb:mongodb /var/log/mongodb
Step 3:
After the next boot you can normally start the mongod server by:
sudo systemctl start mongod
Explanation: mongodb requires the above two folders with owner as mongodb. When we shutdown/reboot, one or both of them gets removed. So, we need to create them and change their ownership.
Edit: I was using Stacer's cleaning tool before every shutdown. This also removes log files and folders. And hence, the error at every startup. Now I unselect the mongodb option and then clean.
Namaste. 🙏
$service mongodb start
$service mongodb status
the status is active when I started using above command
For Ubuntu 16.04.5, it is noticed that MongoDB installations does not auto enable the mongod.service file after installation in my case after I have installed on several servers, so we need to enable it like below:
Issue below to check whether mongod is enabled
systemctl list-unit-files --type=service
If it shows as "disabled", then you need to enable it.
sudo systemctl enable mongod.service
If we want to see whether mongod.service file exists in case this file is missing, check in
ls /lib/systemd/system
You will see a file
/lib/systemd/system/mongod.service
This happened to me while adding users in admin db.
sudo systemctl daemon-reload
is recommended from the official mongo website, but did not help.
If you get
Job for mongod.service failed because the control process exited with error code. See "systemctl status mongod.service" and "journalctl -xe" for details.
While executing
sudo systemctl start mongod
run journalctl -xe and if the issue is
Failed to start MongoDB Database Server.
-- Subject: Unit mongod.service has failed
Then run sudo mongod --> mongo
This will fix the issue and if you want to run with systemctl, then terminate the windows for mongod and mongo and run
sudo systemctl start mongod
and then mongo
Just try with this command:
$ sudo systemctl enable mongod
You can repair
$ sudo rm /var/lib/mongodb/mongod.lock
$ mongod --repair
$ sudo service mongodb start
For Stop
$ sudo service mongodb stop
For Restart-
$ sudo service mongodb restart
For Status-
$ sudo service mongodb status
As per documentation:
Run this command to reload the daemon:
sudo systemctl daemon-reload
After this you need to restart the mongod service:
sudo systemctl start mongod
To verify that MongoDB has started, run:
sudo systemctl status mongod
To ensure that MongoDB will start following a system reboot, run:
sudo systemctl enable mongod
May be you are using a wrong version of mongodb list file. I faced this problem but it's my mistake when not selecting the right list file for Ubuntu 16.04. The default selected is for Ubuntu 14.04 and it's the reason for my error: "Failed to start mongod.service: Unit mongod.service not found."
The following steps helped me solve the problem of not being able to start mongodb on Ubuntu Server 18.04 LTS
Step 1: First, remove MongoDB from previous if installed:
sudo apt remove --autoremove mongodb-org
Step 2: Remove any mongodb repo list files:
sudo rm /etc/apt/sources.list.d/mongodb*.list
sudo apt update
Step 3: Import the public key used by the package management system:
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4
Step 4: Create a list file for MongoDB:
echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list
Step 5: Reload local package database:
sudo apt-get update
Step 6: Install the MongoDB packages:
sudo apt-get install -y mongodb-org
Step 7: Start MongoDB:
sudo service mongod start
Step 8: Begin using MongoDB:
mongo
Hope it helps you.
In some cases for some security reasons the unit would be marked as masked. This state is much stronger than being disabled in which you cannot even start the service manually.
to check this, run the following command:
systemctl list-unit-files | grep mongod
if you find out something like this:
mongod.service masked
then you can unmask the unit by:
sudo systemctl unmask mongod
then you may want to start the service:
sudo systemctl start mongod
and to enable auto-start during system boot:
sudo systemctl enable mongod
However if mongodb did not start again or was not masked at all, you have the option to reinstall it this way:
sudo apt-get --purge mongo*
sudo apt-get install mongodb-org
thanks to #jehanzeb-malik
None of the 30+ existing answers helped me, because my service file was actually missing, not masked or disabled. Re-installing wasn't creating it either for some reason. Solution:
cd /lib/systemd/system
sudo touch mongodb.service
# Copy and paste text to go into service file from snippet below horizontal rule
sudo nano mongodb.service
sudo systemctl daemon-reload
sudo systemctl start mongodb
sudo systemctl status mongodb
[Unit]
Description=An object/document-oriented database
Documentation=man:mongod(1)
After=network.target
[Service]
User=mongodb
Group=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf
[Install]
WantedBy=multi-user.target
You should check that /etc/mongod.conf is actually the location of your conf file, it may be /etc/mongodb.conf instead.
As for how your service file may have gone missing in the first place. I managed to break it by uninstalling 3.0.15, trying and failing to install 5.* due to ubuntu 16 not being able to run it since some dependencies clashed, then re-installing 3.0.15 again.
I got the same error for a long while, tried almost all installation isntruciton on google but could not find te answer...
I followed the instructions from https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/ but keep getting the error Failed to start mongod.service: Unit mongod.service not found
I firstly installed using: sudo apt-get install -y mongodb-org
Then noticed that wher I run:
$ sudo apt-get install -y mongodb-org
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
mongodb-org-mongos mongodb-org-shell mongodb-org-tools
The following NEW packages will be installed
mongodb-org mongodb-org-mongos mongodb-org-shell mongodb-org-tools
0 to upgrade, 4 to newly install, 0 to remove and 46 not to upgrade.
Need to get 0 B/40.1 MB of archives.
After this operation, 178 MB of additional disk space will be used.
Selecting previously unselected package mongodb-org-shell.
(Reading database ... 379307 files and directories currently installed.)
Preparing to unpack .../mongodb-org-shell_4.0.3_amd64.deb ...
Unpacking mongodb-org-shell (4.0.3) ...
Selecting previously unselected package mongodb-org-mongos.
Preparing to unpack .../mongodb-org-mongos_4.0.3_amd64.deb ...
Unpacking mongodb-org-mongos (4.0.3) ...
Selecting previously unselected package mongodb-org-tools.
Preparing to unpack .../mongodb-org-tools_4.0.3_amd64.deb ...
Unpacking mongodb-org-tools (4.0.3) ...
Preparing to unpack .../mongodb-org_4.0.3_amd64.deb ...
Unpacking mongodb-org (4.0.3) ...
Setting up mongodb-org-shell (4.0.3) ...
Setting up mongodb-org-mongos (4.0.3) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Setting up mongodb-org-tools (4.0.3) ...
Setting up mongodb-org (4.0.3) ...
$ mongod --version
db version v2.6.12
2018-10-26T12:03:12.362+0200 git version: d73c92b1c85703828b55c2916a5dd4ad46535f6a
The db version was 2.6.12 instead of the latest one 4.0.3.
So make sure you dont have mongodb-org-server already installed, if yes, then make sure you uupdate it to your target version (as indicated #https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/ -> Step 4 - Install a specific release of MongoDB.)
target_version = 4.0.3
sudo apt-get install -y mongodb-org=target_version mongodb-org-server=target_version mongodb-org-shell=target_version mongodb-org-mongos=target_version mongodb-org-tools=target_version
$ sudo apt-get install -y mongodb-org=4.0.3 mongodb-org-server=4.0.3 mongodb-org-shell=4.0.3 mongodb-org-mongos=4.0.3 mongodb-org-tools=4.0.3
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed
mongodb-org mongodb-org-mongos mongodb-org-shell mongodb-org-tools
The following packages will be upgraded:
mongodb-org-server
1 to upgrade, 4 to newly install, 0 to remove and 45 not to upgrade.
Need to get 15.7 MB/55.8 MB of archives.
After this operation, 217 MB of additional disk space will be used.
Get:1 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0/multiverse amd64 mongodb-org-server amd64 4.0.3 [15.7 MB]
Fetched 15.7 MB in 2s (6,289 kB/s)
Selecting previously unselected package mongodb-org-shell.
(Reading database ... 379306 files and directories currently installed.)
Preparing to unpack .../mongodb-org-shell_4.0.3_amd64.deb ...
Unpacking mongodb-org-shell (4.0.3) ...
**Preparing to unpack .../mongodb-org-server_4.0.3_amd64.deb ...
Failed to stop mongod.service: Unit mongod.service not loaded.
invoke-rc.d: initscript mongod, action "stop" failed.
dpkg: warning: old mongodb-org-server package pre-removal script subprocess returned error exit status 5
dpkg: trying script from the new package instead ...
dpkg: ... it looks like that went OK
Unpacking mongodb-org-server (4.0.3) over (2.6.12) ...**
Selecting previously unselected package mongodb-org-mongos.
Preparing to unpack .../mongodb-org-mongos_4.0.3_amd64.deb ...
Unpacking mongodb-org-mongos (4.0.3) ...
Selecting previously unselected package mongodb-org-tools.
Preparing to unpack .../mongodb-org-tools_4.0.3_amd64.deb ...
Unpacking mongodb-org-tools (4.0.3) ...
Preparing to unpack .../mongodb-org_4.0.3_amd64.deb ...
Unpacking mongodb-org (4.0.3) ...
Processing triggers for ureadahead (0.100.0-20) ...
Setting up mongodb-org-shell (4.0.3) ...
Setting up mongodb-org-mongos (4.0.3) ...
Processing triggers for systemd (237-3ubuntu10.3) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Setting up mongodb-org-tools (4.0.3) ...
Setting up mongodb-org-server (4.0.3) ...
Installing new version of config file /etc/mongod.conf ...
Setting up mongodb-org (4.0.3) ...
and after doing this its all working for me :D
Well.... My answer may be considered naive but in fact it has been the only way MongoDB has work in my case, Ubuntu 19.10. I tried to run the commands from the most voted comments and none worked, when running:
mongod --repair
I got this alert:
With some research I found out that running the DB in another port could be a solution, then:
mongod --port 27018
And it works great for me every time. Long answer but wanted to give context before giving such a simple solution.
(If I'm doing it wrong or doesn't seem logical, plz tell me! Relevant for me)
Do not remove your db if you already have some data you found useful. Just run the command below and you're good.
sudo systemctl restart mongodb.service
To solve the problem of not being able to start mongodb on ubuntu 16.04
1) look at mongodb log file
2) we find that the error is due to "Failed to unlink socket file /tmp/mongodb-27017"
3) Look at the permission of file /tmp/mongdb-27017.lock
and find that the owner is root instead of mongodb
4) Delete the /tmp/mongodb-27017.sock file manually and use the command
"sudo chown mongodb:mongodb /tmp/mongodb*"
5) Start the service with systemcl and use netstat to check whther mongdob has been started on port 27017
Credit: https://www.mkyong.com/mongodb/mongodb-failed-to-unlink-socket-file-tmpmongodb-27017/
https://hevodata.com/blog/install-mongodb-on-ubuntu/
I just encountered this on my parrot os and this is how I solved it.
sudo service mongodb start
Just follow the below commands. This has worked for me.
Uninstall your mongo completely from your system:
sudo service mongod stop
sudo apt-get purge mongodb-org
sudo rm -r /var/log/mongodb
sudo rm -r /var/lib/mongodb
Now reinstall mongodb using following commands:
sudo apt update
sudo apt install -y mongodb**
Note: The database server is automatically started after installation.
Next, let's verify that the server is running and works correctly.
sudo systemctl status mongodb
You'll see this output:
mongodb.service - An object/document-oriented database
Loaded: loaded (/lib/systemd/system/mongodb.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2018-05-26 07:48:04 UTC; 2min 17s ago
Docs: man:mongod(1)
Main PID: 2312 (mongod)
Tasks: 23 (limit: 1153)
CGroup: /system.slice/mongodb.service
└─2312 /usr/bin/mongod --unixSocketPrefix=/run/mongodb --config /etc/mongodb.conf**
For those that run into this and end up on this answer, as I did, where they got this error during uninstall orupgrade and Ubuntu keeps failing to uninstall the previous because the service doesn't exist this one line will get you past that and allow the uninstall or upgrade to continue.
sudo touch /lib/systemd/system/mongod.service
It worked for me on ubuntu 20.04: In my case, mongod.service file was locked so it was giving me the same error.
To resolve the issue:-
Step 1: Use following command to check if the mongod.service is present there
cd /usr/lib/systemd/system
ls
Step 2: If the file is present there then Run the following command to unlock the file mongod.service
sudo chmod 777 /usr/lib/systemd/system/mongod.service -R
Step 3: Now run the following commands:
sudo systemctl daemon-reload
sudo systemctl start mongod
sudo systemctl enable mongod
For Ubuntu, if you have old mongodb installed (e.g 3.x).
Then you might need to:
Remove old mongodb first.
Remove old data, WARNING: this may cause data lose.
e.g sudo rm -r /var/lib/mongodb
Remove init script.
e.g sudo rm /etc/init.d/mongodb
Then re-install new mongodb, (e.g 4.x)
Refer: https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
Then start with sudo service mongod start.
Then check status with sudo service mongod status.
Tips:
Don't use sudo service mongodb start, there is an extra b, that's for old mongodb, that's why we do sudo rm /etc/init.d/mongodb.
Backup your old data before remove it.
This is because Ubuntu or any other OS, won't work proparly for the system files if you have closed rootlogin. That is right. Even when you enter the root on filesystem. I know it seems not logical but it is all about 1 and 0's here.
Even I have su -
or
ssh root#934.2349.234243 (random IP, won't expose myself here:))
Still it didn't start!
"Failed to restart mongodb.service: Unit mongodb.service not found."
Then...
You need to activate root login. You can download cyberduck or any file explorer to quickly find the file .
go to:
/etc/ssh/
if you couldn't go with a software tool, you can use for the step above:
vi /etc/ssh/sshd_config
then press ctrl-c
write to console for saving it
:wq
Change this file called sshd_config:
/etc/ssh/sshd_config
Edit to line to yes:
PermitRootLogin yes
REBOOT VPS
then write
sudo systemctl restart mongodb
Voila!
if that didn't help either because your VPS initiates services just before on the root, you should reinstall the VPS maybe
Note that if using the Windows Subsystem for Linux, systemd isn't supported and therefore commands like systemctl won't work:
Failed to connect to bus: No such file or directory
See Blockers for systemd? #994 on GitHub, Microsoft/WSL.
The mongo server can still be started manual via mondgod for development of course.
The second step of mongo installation is
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list
Instead of this command do it manually
cd /etc/apt/
nano sources.list
Write it deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.4 multiverse
And save the file,
Continue all process as in installation docs
It works for me:
Try this: sudo systemctl start mongod and to check whether its running use sudo systemctl status mongod
sudo systemctl unmask mongod
The above command worked for me!
sudo service mongod start
Try starting the service it after unmasking it
sudo systemctl status mongod
Check the status using the above command or simply start the mongodb server using mongo command, I hope it works.
Cheers
I just installed mongoDB on ubuntu 14.0.4.
I tried to start the shell but I'm getting a connection refused error.
me#medev:/etc/init.d$ mongo
MongoDB shell version: 2.6.5
connecting to: test
2014-11-10T15:06:28.084-0500 warning: Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused
2014-11-10T15:06:28.085-0500 Error: couldn't connect to server 127.0.0.1:27017 (127.0.0.1), connection attempt failed at src/mongo/shell/mongo.js:146
exception: connect failed
So I decided to try to restart the service but that's failing too. I get the following error message:
me#medev:/etc/init.d$ sudo service mongodb restart
mongodb: unrecognized service
me#medev:/etc/init.d$
This is what I have in my /var/log/mongodb/mongod.log - http://pastebin.com/MrHt8tce
what i've tried so far:
I found another post here: can't start mongodb as sudo
which made a comment about remove the mongo lock file.
I deleted the lock file and then retried my command but it still fails as you can see below:
me#medev:/var/lib/mongodb$ sudo rm mongod.lock
me#medev:/var/lib/mongodb$ ls
journal local.0 local.ns _tmp
me#medev:/var/lib/mongodb$ sudo service mongodb start
mongodb: unrecognized service
But I can start it using /etc/init.d as you can see below:
me#medev:/var/lib/mongodb$ sudo /etc/init.d/mongod start
Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service mongod start
Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the start(8) utility, e.g. start mongod
mongod start/running, process 27469
me#medev:/var/lib/mongodb$ ls
journal local.0 local.ns mongod.lock
me#medev:/var/lib/mongodb$ mongo
MongoDB shell version: 2.6.5
connecting to: test
> db
test
>
Any ideas on why I can't start it using the service command would be appreciated. From what I've read, i should be using sudo service mongodb
Try this:
Write mongodb instead of mongod
sudo service mongodb status
I got the same error one day You should use this:
1.Get the status of your mongo service:
/etc/init.d/mongod status
or
sudo service mongod status
2.If it's not started repair it like this:
sudo rm /var/lib/mongodb/mongod.lock
mongod --repair
sudo service mongodb start
And check again if the service is started again(1)
For me the solution was to replace
service mongod start
with
start mongod
You need to make sure the file (ex. /etc/init.d/mongodb) has execute permissions.
chmod +x /etc/init.d/mongodb
For debian, from the 10gen repo, between 2.4.x and 2.6.x, they renamed the init script /etc/init.d/mongodb to /etc/init.d/mongod, and the default config file from /etc/mongodb.conf to /etc/mongod.conf, and the PID and lock files from "mongodb" to "mongod" too. This made upgrading a pain, and I don't see it mentioned in their docs anywhere. Anyway, the solution is to remove the old "mongodb" versions:
update-rc.d -f mongodb remove
rm /etc/init.d/mongodb
rm /var/run/mongodb.pid
diff -ur /etc/mongodb.conf /etc/mongod.conf
Now, look and see what config changes you need to keep, and put them in mongod.conf.
Then:
rm /etc/mongodb.conf
Now you can:
service mongod restart
I installed mongo server on Debian Jessie using manual from official site.
It didn't started after recommended command sudo service mongod restart with the same error - mongodb: unrecognized service.
After looking into installed package contents, I noticed that it contains only Systemd service unit, but no SystemV init script:
# dpkg -L mongodb-org-server
/.
/usr
/usr/bin
/usr/bin/mongod
/usr/share
/usr/share/lintian
/usr/share/lintian/overrides
/usr/share/lintian/overrides/mongodb-org-server
/usr/share/doc
/usr/share/doc/mongodb-org-server
/usr/share/doc/mongodb-org-server/LICENSE-Community.txt
/usr/share/doc/mongodb-org-server/README
/usr/share/doc/mongodb-org-server/copyright
/usr/share/doc/mongodb-org-server/changelog.gz
/usr/share/doc/mongodb-org-server/GNU-AGPL-3.0.gz
/usr/share/doc/mongodb-org-server/THIRD-PARTY-NOTICES.gz
/usr/share/doc/mongodb-org-server/MPL-2.gz
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/mongod.1.gz
/etc
/etc/mongod.conf
/lib
/lib/systemd
/lib/systemd/system
/lib/systemd/system/mongod.service
But my system was running on SysV init:
# stat /proc/1/exe
File: '/proc/1/exe' -> '/sbin/init'
So, there are 2 options now:
(Continue on SysV) Write sysV init script manually as #khylo mentioned above
(Switch to SystemD) and run systemctl start mongod
For me nothing have helped, I've ended up with a solution:
create /lib/systemd/system/mongod.service file with content
[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
Documentation=https://docs.mongodb.org/manual
[Service]
User=mongodb
Group=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf
[Install]
WantedBy=multi-user.target
then start/stop commands should work
$ sudo service mongod start
For reference - I have Ubuntu 14.04 LTS, MongoDB 3.2.9 installed from
deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse
You can use mongod command instead of mongodb, if you find any issue regarding dbpath in mongo you can use my answer in the link below.
https://stackoverflow.com/a/53057695/8247133
I think you may have installed the version of mongodb for the wrong system distro.
Take a look at how to install mongodb for ubuntu and debian:
http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian/
http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/
I had a similar problem, and what happened was that I was installing the ubuntu packages in debian
Original Source - https://www.techrepublic.com/article/how-to-install-mongodb-community-edition-on-ubuntu-linux/
If you're on Ubuntu 16.04 and face the unrecognized service error, these instructions will fix it for you:-
Open a terminal window.
Issue the command sudo apt-key adv —keyserver hkp://keyserver.ubuntu.com:80 —recv EA312927
Issue the command sudo touch /etc/apt/sources.list.d/mongodb-org.list
Issue the command sudo gedit /etc/apt/sources.list.d/mongodb-org.list
Copy and paste one of the following lines from below (depending upon your release) into the open file.
For 12.04: deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.6 multiverse
For 14.04: deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.6 multiverse
For 16.04: deb http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse
Make sure to edit the version number with the appropriate latest version and save the file.
Installation
Open a terminal window and issue command sudo apt-get update && sudo apt-get install -y mongodb-org
Let the installation complete.
Running MongoDB To start the database, issue the command sudo service mongodb start. You should now be able to issue the command to see that MongoDB is running: systemctl status mongodb
Ubuntu 16.04 solution
If you are using Ubuntu 16.04, you may run into an issue where you see the error mongodb: unrecognized service due to the switch from upstart to systemd. To get around this, you have to follow these steps.
If you added the /etc/apt/sources.list.d/mongodb-org.list, remove it with the command sudo rm /etc/apt/sources.list.d/mongodb-org.list
Update apt with the command sudo apt-get update
Install the official MongoDB version from the standard repositories with the command sudo apt-get install mongodb in order to get the service set up properly
Remove what you just installed with the command sudo apt-get remove mongodb && sudo apt-get autoremove
Now follow steps 1 through 5 listed above to install MongoDB; this should re-install the latest version of MongoDB with the systemd services already in place. When you issue the command systemctl status mongodb you should see that the server is active.
I mostly copy pasted the above (with minor modifications and typo fixes) from here - https://www.techrepublic.com/article/how-to-install-mongodb-community-edition-on-ubuntu-linux/
This is a simple solution that worked for me with the same problem (I think):
mv /var/lib/mongodb /var/lib/mongodb_backup
mkdir /var/lib/mongodb
chmod 700 /var/lib/mongodb
chown mongodb:daemon /var/lib/mongodb
systemctl restart mongodb or service mongod restart
If you're running Ubuntu in WSL (Windows Subsystem for Linux), you will have issues because WSL does not currently support systemd.
The link below explains how to run MongoDB without systemd, and even how to add a script for using the service command with WSL.
https://learn.microsoft.com/en-us/windows/wsl/tutorials/wsl-database#mongodb-init-system-differences
tutorials may start MongoDB using the operating system's built-in init system. You might see the command sudo systemctl status mongodb used in tutorials or articles. Currently WSL does not have support for systemd (a service management system in Linux).
You shouldn't notice a difference, but if a tutorial recommends using sudo systemctl, instead use: sudo /etc/init.d/. For example, sudo systemctl status docker, for WSL would be sudo /etc/init.d/docker status ...or you can also use sudo service docker status.
I am on Unix. I have got postgresql-9.3 installed.
When I want to start the server using pg_ctl or postgres, the terminal gives me:
The program 'postgres' is currently not installed. You can install it by typing:
sudo apt-get install postgres-xc
Can't I start the server without this postgres-xc?
This must be remnants of the postgres-xc package you had installed previously.
Since you just installed postgresql-9.3 and don't seem to have any databases in use, yet, I suggest to completely purge all postgres packages.
sudo apt-get purge postgresql-9.2
sudo apt-get purge postgresql-xc
...
Until there's nothing left:
dpkg -l | grep postgres
Then start from scratch. Your instance of pg_ctl seems to belong to the package postgres-xc. This should be gone after you've uninstalled the package. Find out with one of these commands:
dpkg -S pg_ctl
dlocate pg_ctl
apt-file search pg_ctl
pg_ctlcluster is provided by the package postgresql-common.
pg_ctl is provided by the package postgresql-9.3.
More about starting Postgres in the manual.
It is possible you might be missing a few things.
Try:
sudo apt-get install postgresql-client and
sudo apt-get install postgresql postgresql-contrib
The message about installing xc is a dud, it's probably suggesting that based on what it scanned inside the xc repositories.
Here's a good reference to this problem and its solution:
https://dba.stackexchange.com/questions/72580/missing-the-pg-ctl-package-in-postgres-9-3-installation
Due to reasons a normal install of postgres will not place the postgres binary file in the path.
Adding the right directory to the path solves the problem (temporarily).
PATH=/usr/lib/postgresql/9.3/bin:$PATH
To make it permanent on my Ubuntu machine I added the line to /etc/environment this makes it work for all users.
The correct way to set the PATH is different for different systems, for more info see see:
How to permanently set $PATH on Linux?
You must install postgresql-client:
sudo install postgresql-client
Try to enter this command to the console:
sudo -u postgres psql