Most OctoPrint installations out there, will, most likely, run with an ready baked OctoPi image file for the Raspberry Pi. This is obviously the most straight forward approach to get OctoPrint up and running. Still, there are good reasons to run it on a regular machine. You may already run a home server or other Linux system. You also may like to have more processing power, than the RasPi can offer. In the following article, I will describe how I set up OctoPrint on my existing small Linux server, running Ubuntu Server.
All following commands prefixed with a hash mark (#) need to be executed as root by either using
sudo (recommended for Ubuntu) or by changing to the root account (Debian).
Since OctoPrint is written in Python, we need to make sure, that some basic packages are available. At the time of writing, the latest Octoprint version 1.3.11 still uses Python 2.7x. The Ubuntu 18.04 LTS version I’m currently running, also still comes with Python 2.7 as the default.
AFAIK Python 3.x will be supported (or required) starting from version 1.4(?) of Octoprint. If this happens, the setup procedure should basically be the same, just using Python 3.x instead.
# apt install python-pip python-dev python-setuptools git build-essential
Creating a new user
Now, we add a new user for running OctoPrint. I simply added a new regular user account in
octoprint. Also make sure to add the new user to the user group
dialout. This will make sure that the user has permission to access the USB-to-UART serial device. Obviously you may call the user however you like. Just make sure to replace the name
octoprint with your own, in the following text.
First the actual user will be created. The password can be a random string, since the account will be locked and the password disabled anyway.
# adduser octoprint # passwd -l octoprint # usermod -a -G dialout octoprint
After executing these commands, there should be a
/home/octoprint directory and some basic (hidden) files in it.
Next, we use the
su command to change to the user
octoprint and verify that we are in the correct (home) directory of that user.
# su - octoprint octoprint:$ cd octoprint:$ pwd /home/octoprint
Another option would be to add a system user with a home directory in, for example,
/srv/octoprint. System users don’t have passwords and can’t login regularly. In this case a shell needs to be provided when using the su command:
su - -s /bin/bash octoprint. For a single command it’s also possible to use the
-c option (example):
su - octoprint -s /bin/bash -c "pip install --upgrade --user pip"
Installing OctoPrint using pip
Next, the latest
pip (Python package installer) will be installed into the user directory of
octoprint, using the global
octoprint:$ pip install --upgrade --user pip
The following command will install OctoPrint itself and all other needed packages into the local user directory:
octoprint:$ /home/octoprint/.local/bin/pip install --user https://get.octoprint.org/latest
Testing OctoPrint service
After the installation, it should already be possible to start the OctoPrint service (again, make sure to run this as the
octoprint:$ /home/octoprint/.local/bin/octoprint serve
Keep the terminal window open and check your browser, if the service is available on port 5,000. If it is, chances are good everything worked as it’s supposed to. Work through the welcome screen/assistant, presented in your Browser, to setup your instance of Octoprint.
After that, go to Settings (the wrench icon on the top right) and click on Plugin-Manager. There, on the top right, you need to click on a wrench icon again, to access the Plugin configuration.
On the bottom of this windows, you will find an option to force the use of
--user for all
pip commands executed by OctoPrint. Make sure this box is checked and click on save. This option makes sure, that OctoPrint stays in the local directory of the
octoprint user, when installing or updating packages (plugins).
After that, you may or may not test the setup by installing a plugin using the OctoPrint web GUI. This should work fine. If you look into the hidden directory
/home/octoprint/.local/lib/<your_python_version>/site-packages, you should find all libraries and packages which have been installed by using the plugin manager.
If you’re done, please stop the currently running server instance by pressing <Ctrl> + <C> in the terminal screen.
Create a new file called
octoprint.service in the
/etc/systemd/system directory and paste the following content into it:
[Unit] Description=Octoprint - Open Source Printing Interface for 3D printers Documentation=https://docs.octoprint.org After=network.target [Service] User=octoprint Environment=HOME=/home/octoprint WorkingDirectory=/home/octoprint ExecStart=/usr/bin/python2 /home/octoprint/.local/bin/octoprint serve Restart=always [Install] WantedBy=multi-user.target
Since we didn’t provide any additional arguments for the Octoprint script (besides
serve), Octoprint will (create and) use the hidden folder
.octoprint in the home directory of the user running the process, to store its configuration file and other files uploaded or created by the running service. For more information, please check the Octoprint documentation or start
octoprint with the
The following commands will re-read the systemd configuration files, enable the
octoprint.service and also start it immediately and every time the system starts.
# systemctl daemon-reload # systemctl enable octoprint.service # systemctl start octoprint.service
You may assure yourself, if OctoPrint is running, by running
systemctl status octoprint.service. Also with
journalctl -u octoprint.service you may review the log messages OctoPrint printed (and prints) to the console while starting (running).
If you want Octoprint to be able to restart itself and/or shutdown/restart the whole system, you need to configure the
sudo command. Create a new file called
octoprint with the following content in the
# octoprint ALL = NOPASSWD: /bin/systemctl start octoprint.service # octoprint ALL = NOPASSWD: /bin/systemctl stop octoprint.service octoprint ALL = NOPASSWD: /bin/systemctl restart octoprint.service # octoprint ALL = NOPASSWD: /bin/systemctl reboot # octoprint ALL = NOPASSWD: /bin/systemctl poweroff
In this case, only one line is active, all others have been commented out, because I don’t need/want them. If you do, please remove the # in front of the lines, but keep in mind, that this may or may not be a security issue on your system.
Now you can go to Settings, Server, Commands and enter the necessary commands. For example:
sudo systemctl restart octoprint.service
If you want Octoprint to be able to restart (and/or shutdown) the system, you need to add (remove comment) the corresponding line(s) in the
/etc/sudoers.d/octoprint file and enter the command using the
sudo command in the settings.
In the Octoprint settings, in the Folders tab, you may change the path of some of the folders used. Obviously the
octoprint user will need to have the necessary permissions to access them in the file system (especially if they are outside of the users’s home directory).
Optional options 🙂
Starting the octoprint script with the
--help option, shows some additional options.
octoprint@cf-hub:~$ octoprint --help Usage: octoprint [OPTIONS] COMMAND [ARGS]... Options: -b, --basedir PATH Specify the basedir to use for configs, uploads, timelapses etc. -c, --config PATH Specify the config file to use. -v, --verbose Increase logging verbosity. --safe Enable safe mode; disables all third party plugins. --version Show the version and exit. --help Show this message and exit. Commands: analysis Analysis tools. client Basic API client. config Basic config manipulation. daemon Starts, stops or restarts in daemon mode. dev Additional commands for development tasks. plugins Additional commands provided by plugins. safemode Sets the safe mode flag for the next start. serve Starts the OctoPrint server.
If one or more of these options (like
--basedir) should be used when running octoprint, they need to be added to the
ExecStart= line in the
octoprint.service systemd file (before the