Note that we have migrated from Vagrant to Docker for our devstack.  Read the new instructions instead.



The Open edX devstack is a Vagrant instance designed for local development. The instance:

The Open edX devstack is also designed to run code and tests, but you can do most development in the host environment:

The Open edX devstack configuration has the following components:

For comparison, look at the Full Stack page.

Pre-Requisites and Installation

Follow the instructions at http://edx.readthedocs.io/projects/edx-installing-configuring-and-running/en/latest/installation/devstack/index.html

In section 3.3.1.2 Install Devstack, be sure to set the OPENEDX_RELEASE environment variable to "master". This downloads the latest version of devstack, instead of a named release.  

Once Devstack is Running

Using the edX devstack

LMS Workflow

If you are running the developer stack with the standard environment file, lms/envs/devstack.py, then you can use this command:

paver devstack lms

There is a faster version of this command that starts the server without updating requirements or compiling static assets. To ONLY start the server:

paver devstack --fast lms

Note: you can type paver --help to list commands, or paver [command] --help for command options.

Open a browser on your host machine and navigate to http://localhost:8000/ to load the LMS. (Vagrant will forward port 8000 to the LMS server running in the VM.)

The latest version of devstack has the demo course pre-loaded and dummy accounts, you can log in to the website as:

If you are bringing up LMS with a custom configuration (For example devstack as for developer stack and devstack.py, but you name yours as you require):

If there is a change to layout, or if you ran the server with the --fast flag from the start and are wondering why all of the css/images are missing, you will need to recompile the css and other assets as well:

paver update_assets


Notepaver -h will show other available commands


Note./manage.py lms -h --settings=devstack will show other available commands on the server.

Studio Workflow

Within the VM instance, switch to the edxapp user:

sudo su edxapp

This will source the edxapp environment (/edx/app/edxapp/edxapp_env) so that the venv python and rbenv ruby are in your search path. It will also set the current working directory to the edx-platform repository (/edx/app/edxapp/edx-platform).

Note: the following steps are for running with the standard configuration file. To run Studio with a custom configuration, follow the instructions as for LMS, above, replacing lms with cms in the commands.

If you are running the developer stack with the standard environment file, cms/envs/devstack.py, then you can use this command:

paver devstack studio

There is a faster version of this command that starts the server without updating requirements or compiling assets. To ONLY start the server:

paver devstack --fast studio

Open a browser on your host machine and navigate to http://localhost:8001/ to load Studio. (Vagrant will forward port 8001 to the Studio server running in the VM.)

Forum Workflow


Running LMS/Studio simultaneously

If you are running both LMS and Studio without the --fast switch, you will notice that while starting the either server, the LMS server will continuously redeploy itself and show a variant of this message repeatedly:

June 09, 2016 - 14:50:05
Django version 1.8.7, using settings 'lms.envs.devstack'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.
June 09, 2016 - 14:50:14
Django version 1.8.7, using settings 'lms.envs.devstack'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.
.
.
.

This is due to the fact that when not runing in --fast mode, there is a watcher in place that will redeploy the server if a file change is detected, and during the startup of the Studio server, several files in the LMS instance are touched.  As a workaround for this issue, either run LMS in --fast mode, or just wait for the file touching to complete.

Updating devstack to latest

If you plan to make changes that will result in a pull request for any of the devstack applications, you will likely want to update your devstack to the latest from the upstream master.  To do so, first make sure that your devstack instance was from the latest devstack download and NOT from one of the named releases.  If you defined OPENEDX_RELEASE before downloading devstack, than this is NOT the case.  Once this is true, you'll want to switch to the edxapp user and update the code and databases.

  1. First, Bring up the VM and log into it:

    $ vagrant up
    .
    .
    .
    $ vagrant ssh


  2. Within the VM instance, switch to the edxapp user:

    sudo su edxapp


  3. This will bring you to the edx-platform directory.  Next, update the code to the latest on master:

    $ git checkout master
    $ git pull


  4. Once you have the latest code, the database will be out of sync with the code changes.  You will need to update the database by running the scripted migrations:

    $ paver update_db


  5. At this point, you should be set.  Bring up cms and/or lms (as directed above) and verify that you have working instances.

Developing on devstack

See Developing on the edX Developer Stack once you are ready to start developing on devstack.

Running LMS/Studio Tests

sudo su edxapp
paver test_python

NOTE: if these tests fail with an error about needing a sudo password, use visudo to update your sudoers file for the edxapp user:

visudo -f /etc/sudoers.d/01-sandbox
  
  edxapp ALL=(sandbox) SETENV:NOPASSWD:/edx/app/edxapp/venvs/edxapp-sandbox/bin/python
  edxapp ALL=(sandbox) SETENV:NOPASSWD:/usr/bin/find
  edxapp ALL=(ALL) NOPASSWD:/usr/bin/pkill


See also the CodeJail readme.

See the docs on testing edx-platform for detailed information about writing and running tests.

Updating Application Versions

Use vagrant provision to update the configuration and all repositories to the master branch. NOTE: this will perform a git clean on your repositories, so make sure you have committed any changes you want to save.

If you want to only update the configuration repo, vagrant ssh, sudo /edx/bin/update configuration master.

Logs

Logs for the running applications can be found in various application specific folders in/edx/var/log.

Troubleshooting / Issues / Workarounds

If you can't find the solution to your problem here, there is more documentation on the Open Source Project Page and ReadTheDocs

Provisioning Issues

edx-platform checkout failure

Sometimes there's a failure to checkout the edx-platform repo (as shown below). This can occur if the edx-platform repository is already checked out on your machine and the git URL for the origin remote is set to an SSH URL (e.g. git@github.com:edx/edx-platform.git) instead of HTTPS e.g.https://github.com/edx/edx-platform.git).

SSH keys are not installed on the Vagrant box so SSH remotes will not work. Use an HTTPS remote instead to resolve this issue. This can be set by using git remote set-url origin <https url> as the edxapp user.

TASK: [edxapp | checkout edx-platform repo into {{edxapp_code_dir}}] **********
failed: [localhost] => {"cmd": ["/usr/bin/git", "ls-remote", "origin", "-h", "refs/heads/master"], "failed": true, "item": "", "rc": 128}
stderr: Warning: Permanently added 'github.com,192.30.252.130' (RSA) to the list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

msg: Warning: Permanently added 'github.com,192.30.252.130' (RSA) to the list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

FATAL: all hosts have already failed -- aborting

PLAY RECAP ********************************************************************
           to retry, use: --limit @/root/vagrant-devstack.retry

localhost                  : ok=125  changed=20   unreachable=0    failed=1



Stderr from the command:

stdin: is not a tty

VirtualBox 4.3.10 NFS Mounts

MySQL time zone definitions missing

If you see a ValueError like the following when working in the Django admin:

ValueError at /admin/certificates/certificatehtmlviewconfiguration/
Database returned an invalid value in QuerySet.datetimes(). Are time zone definitions for your database and pytz installed?

Run the following:

$ mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root mysql

If that doesn't work, follow the instructions at https://bugs.mysql.com/bug.php?id=68861.

General tips

git clone https://github.com/edx/configuration.git
cd configuration/vagrant/base/devstack
vagrant up

Signing up a new user (activation message problems):

We need to verify your email address

Almost there! In order to complete your sign up we need you to verify your email address. 
An activation message and next steps should be waiting for you there. 

However, when running the stack locally, there is no email message sent. Rather the message comes out on the console, giving the activation key to use:

Thank you for signing up for edX Studio! To activate your account, please copy and paste this address into 
your web browser's address bar:

            http://localhost/activate/0699e17df6024fb382fadfabed100691

If you didn't request this, you don't need to do anything; you won't receive any more email from us. Please do
not reply to this e-mail; if you require assistance, check the help section of the edX web site. 

Using the domain address ‘http://localhost/activate/… may not work when you copy this address into the web browser’s address field as instructed. if a ’Server not found’ message comes up in the browser, substitute

http://127.0.0.1:8001

for localhost. For example:

http://localhost/activate/a19de8c6330f4213ac3313c147297990

becomes

http://127.0.0.1:8001/activate/a19de8c6330f4213ac3313c147297990
Exception Type:   DatabaseError
Exception Value:  

(1146, "Table 'edxapp.new_foo' doesn't exist")

Exception Location:   /edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/MySQLdb/connections.py in defaulterrorhandler, line 36

there have been database migrations that you need to perform. Note this will not destroy your data. You can use the following command:

paver update_db -s devstack
pymongo.errors.ConnectionFailure: could not connect to localhost:27017: [Errno 111] Connection refused

or this one, when attempting to run the forums:

MOPED: Could not connect to any node in replica set <Moped::Cluster nodes=[<Moped::Node resolved_address="127.0.0.1:27017">]>, refreshing list.

The Vagrant instance not shut down properly. Use vagrant halt to safely stop the Vagrant instance. To fix this, try:

vagrant up
vagrant ssh
sudo rm /edx/var/mongo/mongodb/mongod.lock
sudo mongod -repair --config /etc/mongod.conf
sudo chown -R mongodb:mongodb /edx/var/mongo/.
sudo service mongod start

If using a pre-lavash version of devstack, do this instead:

vagrant up
vagrant ssh
sudo rm /edx/var/mongo/mongodb/mongod.lock
sudo mongod -repair --config /etc/mongodb.conf
sudo chown -R mongodb:mongodb /edx/var/mongo/mongo/.
sudo service mongod start
DatabaseError: (1146, "Table 'edxapp.dark_lang_darklangconfig' doesn't exist")

Then this means that your database is outdated and needs to be migrated.

sudo su edxapp
 ./manage.py lms migrate --settings=devstack

and then do the same thing for Studio with

sudo su edxapp
./manage.py cms migrate --settings=devstack

FactoryError on oAuthTests:

If you are seeing the following error when running your python tests, you will need to force an upgrade on one of the dependencies:

FactoryError: Cannot generate instances of abstract factory ClientFactory; Ensure ClientFactory.Meta.model is set and ClientFactory.Meta.abstract is either not set or False.

If you want to verify that you have this edx-oauth2-provider issue, you can use the following:

sudo su edxapp
~/edx-platform$ cat ~/edx-platform/requirements/edx/github.txt | grep "edx-oauth2-provider"
# Should display 0.5.7 or greater if this is your issue.  This is the dependency you want.
pip freeze | grep “edx-oauth2-provider"
# Should display 0.5.1.  This is the dependency you have.

To fix (still as edxapp user):

# force uninstall of bad dependency
pip uninstall edx-oauth2-provider
# run previously failing test that will install updated dependency and now pass
paver test_system -t lms/djangoapps/oauth2_handler/tests.py:UserInfoTest.test_request_staff_courses_with_claims

Forums / Ruby Issues:

Your gems need updating (might happen when switching versions of cs_comment_service). Runbundle install to resolve this, and then retry.

If you are getting a password prompt after running bundle install, you will need to fix some directory permissions:

# NOTE do this as user vagrant, not user forum
sudo chmod -R 0770 /edx/app/forum/.rbenv
sudo chmod -R 0770 /edx/app/forum/.gem

Then sudo back to user forum, do bundle install again, and you should no longer be prompted.

Running Tests is Broken, aka Insecure String Pickle

If running tests seems broken, try removing the .testids from your project root. "git clean -fxd .testids" should also work. Aborting a test mid-run can leave those in a bad state. One error message we've seen a few times from this is "insecure string pickle". No doubt there are many other error messages which might result from this problem, but none that are as poetic!

Ubuntu:

It appears your machine doesn't support NFS, or there is not an
adapter to enable NFS on this machine for Vagrant. Please verify
that `nfsd` is installed on your machine, and try again. If you're
on Windows, NFS isn't supported. If the problem persists, please
contact Vagrant support.

you need to install nfs using this command:

sudo apt-get install nfs-common nfs-kernel-server
exportfs: Warning: ... does not support NFS export.

To work around the issue set VAGRANT_MOUNT_BASE to a dir outside the encrypted volume.


Windows

TASK: [edxapp | Install edx-platform npm dependencies] ************************

failed: [localhost] => {"changed": true, "cmd": "npm install ", "delta": "0:00:0
3.358306", "end": "2014-03-24 16:51:37.509494", "item": "", "rc": 1, "start": "2
014-03-24 16:51:34.151188"}
stderr: npm http GET http://registry.npmjs.org/coffee-script
npm http 200 http://registry.npmjs.org/coffee-script
npm ERR! error installing coffee-script@1.6.1

npm ERR! Error: UNKNOWN, unknown error '../coffee-script/bin/coffee'
npm ERR! You may report this log at:
npm ERR!     <http://bugs.debian.org/npm>
npm ERR! or use
npm ERR!     reportbug --attach /edx/app/edxapp/edx-platform/npm-debug.log npm
npm ERR!
npm ERR! System Linux 3.2.0-23-generic
npm ERR! command "node" "/usr/bin/npm" "install"
npm ERR! cwd /edx/app/edxapp/edx-platform
npm ERR! node -v v0.6.12
npm ERR! npm -v 1.1.4
npm ERR! path ../coffee-script/bin/coffee
npm ERR! code UNKNOWN
npm ERR! message UNKNOWN, unknown error '../coffee-script/bin/coffee'
npm ERR! errno {}
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     /edx/app/edxapp/edx-platform/npm-debug.log
npm not ok

FATAL: all hosts have already failed -- aborting

Go to Troubleshooting Vagrant and follow the instructions towards the bottom of the page about this and other symlink errors in Windows.

Mac OS X

Sometimes, NFS fails the first time you start Vagrant on Mac OS X. If you see this message:

[default] Mounting NFS shared folders...
The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!
mount -o 'vers=3,udp' 192.168.33.1:'/path/to/devstack/edx-platform' /edx/app/edxapp/edx-platform
Stdout from the command:
Stderr from the command:
stdin: is not a tty
mount.nfs: requested NFS version or transport protocol is not supported

then reload and re-provision the instance using these commands:

vagrant reload
vagrant provision

Fedora 23 (NFS mount hanging indefinitely)

If the virtual machine hangs on the "Mounting NFS shared folders..." stage indefinitely without any errors when attempting to run it, it could mean the default NFS version (3) used by Vagrant may be incompatible with your host system. It was noticed for instance on a Fedora 23 installation. The workaround is to edit the Vagrantfile and add "nfs_version: 4" there in the MOUNT_DIRS part, as follows:

MOUNT_DIRS.each { |k, v|
  config.vm.synced_folder v[:repo], v[:local], create: true, nfs: true, nfs_version: 4
}