There are some daemons I make zero use of and would like prevent from autostarting, those include avahi, zeitgeist, telepathy, apport and some others. Needless to say I'd like them not to start. Can this be achieved without uninstalling them (there still are dependencies and I even believe an occasion can heppen when I'll actually need them)?
Ubuntu – How to disable unnecessary services without uninstalling them in Ubuntu 15.10
15.10servicessystemdupstart
Related Solutions
There are services that can be enabled/disabled using the GUI (like the startup
application) or the terminal.
For the Terminal you have several options. First, open a terminal (Type "terminal" in the dash, for example, and open it). Then:
Temporary enabling/disabling services
To stop and start services temporarily (Does not enable / disable them for future boots), you can type service SERVICE_NAME [action]
. For example:
sudo service apache2 stop
(Will STOP the Apache service until Reboot or until you start it again).sudo service apache2 start
(Will START the Apache service assuming it was stopped before.).service apache2 status
(Will tell you the STATUS of the service, if it is either enabled/running of disabled/NOT running.).sudo service apache2 restart
(Will RESTART the service. This is most commonly used when you have changed, a config file. In this case, if you changed either a PHP configuration or an Apache configuration. Restart will save you from having to stop/start with 2 command lines)service apache2
(In this case, since you did not mention the ACTION to execute for the service, it will show you all options available for that specific service.) This aspect varies depending on the service, for example, with MySQL it would only mention that it is missing a parameter. For other services like networking service it would mention the small list of all options available.
SYSTEMD
Starting with Ubuntu 15.04, Upstart will be deprecated in favor of Systemd. With Systemd to manage the services we can do the following (through the systemctl action SERVICE
pattern):
systemctl start SERVICE
- Use it to start a service. Does not persist after reboot
systemctl stop SERVICE
- Use it to stop a service. Does not persist after reboot
systemctl restart SERVICE
- Use it to restart a service
systemctl reload SERVICE
- If the service supports it, it will reload the config files related to it without interrupting any process that is using the service.
systemctl status SERVICE
- Shows the status of a service. Tells whether a service is currently running.
systemctl enable SERVICE
- Turns the service on, on the next reboot or on the next start event. It persists after reboot.
systemctl disable SERVICE
- Turns the service off on the next reboot or on the next stop event. It persists after reboot.
systemctl is-enabled SERVICE
- Check if a service is currently configured to start or not on the next reboot.
systemctl is-active SERVICE
- Check if a service is currently active.
systemctl show SERVICE
- Show all the information about the service.
sudo systemctl mask SERVICE
- Completely disable a service by linking it to /dev/null
; you cannot start the service manually or enable the service.
sudo systemctl unmask SERVICE
- Removes the link to /dev/null
and restores the ability to enable and or manually start the service.
UPSTART (Deprecated Since 15.04)
If we want to use the official Upstart way (Note that, for the moment, not all services have been converted to Upstart), we could use the following commands:
status SERVICE
- This will tell us if a converted service is running or not. Note that this is deprecated in favor of start
, stop
, status
& restart
. It will also tell us if a service has not yet been converted to upstart:
A converted service would typically output the current status (Starting, Running, Stopping...) and process ID. A non converted service would give an error about an unknown job.
Some shortcuts may only work with the service
command above but not with the commands below unless they are 100% converted to upstart services:
START -
sudo start mysql
STOP -
sudo stop mysql
RESTART -
sudo restart mysql
STATUS -
sudo status smbd
Enabling / Disabling a service
To toggle a service from starting or stopping permanently you would need to:
echo manual | sudo tee /etc/init/SERVICE.override
where the stanza manual
will stop Upstart from automatically loading the service on next boot. Any service with the .override
ending will take precedence over the original service file. You will only be able to start the service manually afterwards. If you do not want this then simply delete the .override
.
For example:
echo manual | sudo tee /etc/init/mysql.override
Will put the MySQL service into manual
mode. If you do not want this, afterwards you can simply do
sudo rm /etc/init/mysql.override
and Reboot for the service to start automatically again. Of course to enable a service, the most common way is by installing it. If you install Apache, Nginx, MySQL or others, they automatically start upon finishing installation and will start every time the computer boots. Disabling, as mentioned above, will make use of the service manual
.
I managed start the MongoDB service with SystemD on boot:
I uninstalled the official meta-package (mongodb-org) v3.2, then I installed the meta-package (mongodb) v2.6 from Ubuntu repository:
> sudo apt-get remove mongodb-org
> sudo apt-get install mongodb
Create the service config file as shown below:
> cd /lib/systemd/system
> sudo touch mongodb.service
> sudo nano mongodb.service
[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/mongodb.conf
[Install]
WantedBy=multi-user.target
Verify in the list if the service is enabled or disabled using the command below:
> systemctl list-unit-files --type=service
...
mongodb.service disabled
...
If it is disabled or not in the list, enable it:
> sudo systemctl enable mongodb.service
Check again:
> systemctl list-unit-files --type=service
...
mongodb.service enabled
...
Now you can managing the service on SystemD init process:
> systemctl status mongodb
> sudo systemctl stop mongodb
> sudo systemctl start mongodb
> sudo systemctl restart mongodb
Enjoy!
Best Answer
Yes, because you are using Ubuntu 15.10, you can now use systemd to disable these unwanted services.
You have two options:
disable
&mask
.OPTION ONE:
When you
mask
a service, you prevent any user or service from starting this service by creating a symlink to/dev/null
.To mask a service:
For example to completely disable
apport
, run the following command:If successful, the last command should return the following:
OPTION TWO:
When you
disable
a service, you prevent the service from loading automatically at boot time.However, the service may still start if called by another service when disabled and you can still start the service up by explicitly calling the service.
To disable a service:
To prevent
apport
from starting at boot, run the following command:Run the following command for a more complete list and use
grep
to narrow the results: