The instructions below will setup an instance of Submitty on your own hardware that will have several courses, many sample assignments, and a hundred students with assignment submissions so you can explore the features of Submitty as it would appear “mid-semester”. Your host computer can run any modern operating system (Windows, Mac, or Unix/Linux). The installation process will create a new Virtual Machine (VM) on your computer and the VM will use the Ubuntu GNU/Linux operating system.
Note: We only officially support and test development using VirtualBox. The instructions below are for VirtualBox. While alternatively using VMWare should work, we have not tested this, and do not provide these instructions.
To develop with a Virtual Machine (VM), your computer should have at least 8GB of RAM and a 64-bit host OS. AMD-V or Intel VT-x are also required (most computers have these). Submitty is RAM and I/O intensive, so more RAM and a fast disk are better.
Make sure you have at least 20GB of hard disk available for installation. We do not recommend installing the Submitty Developer VM on DropBox, OneDrive, GoogleDrive, or other cloud storage.
Some developers have had problems running both VirtualBox and VMWare on the same computer. If you have problems, we suggest shutting down the VMWare VMs, or stopping the VMWare services, or uninstalling VMWare.
If you’re running Windows, it is recommended to disable Hyper-V. Leaving it enabled will force VirtualBox to use the Hyper-V backend, which will be slower and can cause instability in the VM.
Note: This may stop programs like Docker Desktop and WSL 2 from working. If these programs are essential to your workflow, consider looking up how to add a separate boot entry with “hypervisorlaunchtype” set to “off” for use with VirtualBox.
The complete installation process could take an hour or more. Make sure your internet connection is strong and consistent. You’ll probably want to plug in your laptop power cord. Check your computer settings and make sure the machine does not hibernate or go to sleep during installation.
Submitty Developer VM Installation
- Virtualization is generally enabled by default.
Open the Settings app by searching for it in the windows bar or clicking it in the Windows menu.
Navigate to Update and Security, then select Recovery from the side menu.
Under Advanced Startup, click Restart Now.
Once your PC has rebooted, click the Troubleshoot option.
Click Advanced Options.
Click UEFI Firmware Settings and restart as suggested.
Enter your BIOS (generally by pressing Del, F12, or other keys while booting). If you are not able to find the key combo needed to enter your BIOS, refer to this guide.
Locate Virtualization, and enable it. (Note: If you cannot find the option to enable virtualization, search Google for a tutorial on enabling it with your motherboard.)
Reboot your computer.
Enter your BIOS (generally by pressing Del, F12, or other keys while booting).
Navigate the BIOS Settings.
Locate Virtualization and enable it.
Be sure to choose Hardware Virtualization in the System -> Acceleration settings of the virtual machine you are using.
NOTE If using secure boot, vagrant may fail to work with VirtualBox. You will then either need to disable secure boot from the boot menu/BIOS or follow these steps to self-sign the necessary packages to run vagrant and VirtualBox.
Download and install the latest version of Ruby.
Download and install the latest version of Git.
Download and install VirtualBox and Vagrant
Below are quick steps to get everything installed and running.
- You can just go to the respective sites and download the necessary binaries.
You can either go to respective sites and download the necessary binaries or install homebrew if you don’t have it and then run:
brew install --cask virtualbox brew install --cask vagrant
The Ubuntu repository does not contain the latest version of Vagrant or VirtualBox and using them may not work nor are they supported. We recommend that you either download the necessary binaries from their respective steps or follow the steps outlined below for each:
Clone the Submitty repository to a location on your computer (the “host”).
git clone https://github.com/Submitty/Submitty.git
NOTE: If you are not currently part of the Submitty organization on Github, you may want to fork the repo and use the git url from your fork instead, especially if you are looking to contribute.
OPTIONAL: If you will be developing code in one of the companion Submitty repositories (e.g., AnalysisTools, Lichen, RainbowGrades, Tutorial), also clone those repositories to the same directory. For example:
home └── myusername └── Submitty └── GIT_CHECKOUT ├── AnalysisTools (optional) ├── Lichen (optional) ├── RainbowGrades (optional) ├── Submitty └── Tutorial (optional)
This host directory structure will be shared / synced between your host operating system and the Submitty virtual machine.
Navigate into the Submitty repository on your computer in a shell/terminal and type:
Windows should run CMD or powershell on administrator mode
Vagrant will build your VM. This will take maybe 30 minutes to a few hours depending on your Internet connection speed. When this command finishes, your VM is ready to use.
vagrant upcommand completes successfully, you will be able to access the Submitty website (instructions follow in the next section).
The VM will continue to run jobs in the background and consume a nontrivial amount of CPU resources, while completing a backlog of autograding for a dozen or more sample submissions for each of the more than 100 users in the sample courses.
If your development work will not require sample assignment submissions or autograding results, you may prepend
NO_SUBMISSIONS=1to the previous command, which will skip the creation of these sample submissions and their autograding and decrease the time to complete installation.
NO_SUBMISSIONS=1 vagrant up
Using your Submitty Developer VM
When the VM is “up”, you can go visit the homework submission website.
From a web browser (Chrome, Firefox, IE, etc.) on your host computer, go to:
(see the VM login & password info below)
You can test the submission, autograding, and viewing of the grades details by uploading sample submissions from the Submitty repository, located in one of these these directories:
For the “tutorial” course:
For the “sample” course:
When the VM is “up”, you can connect from your host computer to the virtual machine via ssh. Windows users will need to install SSH software (e.g., WSL, or Cygwin, or Putty ). From a terminal in the repository directory type:
You will connect to the VM as the
vagrant sshasks for a password for the firstname.lastname@example.org user and “vagrant” without the quotation marks does not work, look at the vagrant ssh config file and make note of the hostname and port.
Then directly ssh into the VM by
ssh vagrant@hostname -p port
If it asks for password, it should be “vagrant” and then
to login as the root user. You should then see you are logged in as root@vagrant.
The following users exist on the VM:
user password role vagrant vagrant OS user root vagrant OS user submitty_cgi submitty_cgi Submitty process submitty_php submitty_php Submitty process submitty_daemon submitty_daemon Submitty process postgres postgres database process instructor instructor Submitty user ta ta Submitty user student student Submitty user
The VM has the following four courses by default and they are all part of the current semester:
Note: The current semester is calculated by either using an
sif in the month is < 7 else use
fand then take the last two digits of the current year. So April 2017 would be
s17while September 2017 would be
Starting and Stopping the Submitty VM
When you take a break from Submitty development work, you can suspend the Submitty VM to to save resources (CPU and battery) on your host machine.
Alternatively, you can halt the virtual machine. This is a more complete shutdown and will take slightly longer to restart when you resume development work.
To resume work on a VM that is suspended or halted:
NOTE: when resuming work, you may see this warning several times,
default: Warning: Remote connection disconnect. Retrying.. .These warnings are not harmful and can be ignored.
If you just want to restart the VM (same as
Read the Development Instructions page for instructions on updating an existing installation with recent code changes.
To completely delete the virtual machine, type:
And if desired (to start over from scratch with a fresh VM):
If an error is thrown during
vagrant up, you may need to uninstall Virtual Box and all virtual machines by typing the following commands:
CAUTION: This should only be done if you do not have any other virtual machines.
To remove Virtual Box type:
sudo apt-get remove --purge virtualbox
To remove all virtual machines and configuration files type:
sudo rm ~/"VirtualBox VMs" -Rf sudo rm ~/.config/VirtualBox/ -Rf
This will delete all virtual machine settings. Then install the latest version of Virtual Box and vagrant from the links given in step 3 (using Ubuntu Software).
If it has been a while since your last
vagrant upyou may need to update/upgrade/reinstall the virtual box, vagrant, and the installed boxes on your system:
For example, on Mac:
brew reinstall --cask virtualbox brew reinstall --cask vagrant vagrant plugin update vagrant box update
Similar instructions for other OS.
Testing with a remote device
Make sure that the VM is stopped.
Vagrantfile, add a new port under
config.vm.definefor the primary box below the other forwarded ports (site, websockets, database).
ubuntu.vm.network 'forwarded_port', guest: 22, host: <port>, id: "ssh", host_ip: "0.0.0.0"
<port>with the port you want to expose externally on the machine that is running the VM, and expose the specified port on the machine if necessary.
Start the vagrant machine with
Retrieve the private key for the vagrant machine, located at
<SUBMITTY GIT REPO>/.vagrant/machines/<VM>/<VM BACKEND>/private_key.
At the time of writing,
Use SSH to connect from the remote device to the machine that is running the VM, and use SSH port forwarding (local forwarding) to forward the necessary ports.
The username to sign in is
rootand the authentication method is with private key (using the private key specified in part 4). If you encounter authentication issues, try adding
vagrantas the password in addition to the private key.
For most things, you will only need to forward the
siteport and the
websocketsport (1511, 8443).
The configuration to set up the connection will differ based on your client; below is an example for if you’re using an SSH binary to connect, assuming that the SSH configuration file has the username, private key (identity file), IP address (host name), and port stored.
ssh -L 1511:localhost:1511 -L 8443:localhost:8443 $SUBMITTY_HOST
$SUBMITTY_HOSTis a reference to the
Hostfrom the SSH config file.
NOTE Especially for mobile operating systems, make sure that your SSH client supports SSH port forwarding. On iOS, you will also have to enable location tracking for the client to keep the connection alive in the background.
This has been tested with Blink for iOS and Termius for iOS (also available on Android, untested).
localhost:1511on the remote device.