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## Deploy | ||
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### Getting started | ||
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Thanks to the modular structure of its design Biostar is able to integrate with | ||
a wide variety of backends and provides a number of configuration scripts and helper | ||
methods to different deployment options. | ||
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The choices made when deploying Biostar depend on the expected levels | ||
of traffic and number of posts that the site needs to manage. The examples that | ||
we provide are the two extremes, some deployments may use a combination of settings from both. | ||
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Example files can be found in the `live` folder named `deploy.env` and `deploy.py`. | ||
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The basic rule is to create a settings file based on the default settings. This means that | ||
the customized settings file will start with:: | ||
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from biostar.settings.base import * | ||
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Then subsequently override the various settings for the current deployment. For example:: | ||
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from biostar.settings.base import * | ||
SITE_DOMAIN = "mysite.com" | ||
SERVER_EMAIL = "myemail@mysite.com" | ||
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etc. | ||
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Technically a django deployment needs only a settings file, but in practice we use an environment | ||
file to populate a shell environment and a settings file that pulls some of these variables out of | ||
the environment. | ||
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We recommend that you start with the files in `live/deploy*` and copy them another | ||
name. The `deploy.env` and `deploy.py` files show the minimally necessary variables | ||
that need to be set. | ||
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source live/deploy.env | ||
./biostar.sh test | ||
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The `deploy.env` must specify the correct django settings module in this case `live.deploy` that will | ||
load the `live/deploy.py` python module. | ||
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To run periodic scripts make sure that they load up the enviroment variables before executing the | ||
script. | ||
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### Low traffic deployment | ||
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Suited to websites that distribute information to smaller organizations. It can be achieved | ||
with just python based solutions. Install the dependencies with:: | ||
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pip install -r conf/requirements/deploy.txt | ||
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Copy the `live/deploy.env` and `live/deploy.py` files to a different | ||
name/location. For example `simple.env` and `simple.py`. | ||
Customize these as needed. To run the site invoke the waitress server that | ||
was installed above:: | ||
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source live/simple.env | ||
waitress-serve --port 8080 live.deploy.simple_wsgi:application | ||
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Create a crontab entry that updates the index every 30 minutes:: | ||
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source live/simple.env | ||
biostar.sh update_index | ||
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You are done. | ||
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### High traffic deployment | ||
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While not required to be turned on the site supports compressing and precompiling the site assets. | ||
To make use of this functionality you will need to have `lessc` to be installed and you will | ||
need to set the `USE_COMPRESSOR=True` in your settings file. | ||
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To deploy the site with `postgresql` and `elasticsearch` install the requirements:: | ||
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pip install --upgrade -r conf/requirements/deploy.txt | ||
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Start with the `conf/defaults.env` and files unde `conf/deploy/*` and customize them. | ||
We typically copy these into the `live` folder. Rember to add an `__init__.py` file in | ||
this folder if you want to import your settings from it. | ||
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For high performance installation we recommend deploying the production servers with | ||
the following stack: | ||
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* Front end webserver with `nginx` | ||
* Biostar WSGI running via `gunicorn` | ||
* `Postgresql` as the database | ||
* `Redis` as the job queue | ||
* `Celery` for running the asynchronous jobs | ||
* `Supervisord` keeping everything running | ||
* `Elasticsearch` as the search engine | ||
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The `conf/server` folder has configuration files for `nginx`, `gunicorn` and `supervisord`. | ||
The `conf/fabs` folder has Fabric files to automate a large number of site deployment operations. | ||
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# Install | ||
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The sourcecode can be obtained via:: | ||
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git clone https://github.com/ialbert/biostar-central.git | ||
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## Getting started | ||
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Get the source and switch to the source directory. The | ||
recommended installation is via ``virtualenv`` and ``pip``:: | ||
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# Install the requirements. | ||
pip install --upgrade -r conf/requirements/base.txt | ||
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# Initialize, import test data and run the site. | ||
./biostar.sh init import run | ||
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Visit ``http://localhost:8080`` to see the site loaded with default settings. | ||
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The default admin is ``1@lvh.me`` password ``1@lvh.me``. The default email | ||
handler will print to the console. You can reset the password | ||
for any user then copy paste the password reset url into the browser. | ||
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Run the manager on its own to see all the commands at your disposal:: | ||
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./biostar.sh | ||
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To enable searching you must the content with:: | ||
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./biostar.sh index | ||
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## Blog Aggregation | ||
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Biostar has the ability to aggregate blog feeds and allow searching and linking to them. | ||
List the RSS feeds in a file then:: | ||
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# Initialize with new feed urls (see example) | ||
python manage.py planet --add biostar/apps/planet/example-feeds.txt | ||
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# Download all feeds (usually performed daily) | ||
python manage.py planet --download | ||
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# Add one new blog entry for each feed the downloaded file (if there is any) | ||
python manage.py planet --update 1 | ||
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Sending Emails | ||
-------------- | ||
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By default Biostar can send email via the standard email facilities that Django provides see | ||
https://docs.djangoproject.com/en/dev/topics/email/ | ||
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Biostar offers a few helper functions that allow emailing via Amazon SES:: | ||
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# Amazon SES email settings. | ||
EMAIL_USE_TLS = True | ||
EMAIL_BACKEND = 'biostar.mailer.SSLEmailBackend' | ||
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Note: sending an email blocks the server thread! This means that the server process | ||
allocated to sending email will stop serving other users while the email is being sent. | ||
For low traffic sites this | ||
may not be a problem but for higher traffic sites the approach is not feasible. | ||
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To address that Biostar also implements a Celery based email backend that queues up and sends | ||
emails as separate worker processes, independently of the main server. Setting that | ||
up is very simple via the settings:: | ||
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# Amazon SES email sent asynchronously. | ||
EMAIL_USE_TLS = True | ||
EMAIL_BACKEND = 'biostar.mailer.CeleryEmailBackend' | ||
CELERY_EMAIL_BACKEND = 'biostar.mailer.SSLEmailBackend' | ||
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Receiving Emails | ||
---------------- | ||
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Biostar can be set up to receive emails and deposit them into threads. This allows users to use emails | ||
to post to Biostar. | ||
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To enable this functionality the site admins need to set up an email system that | ||
can, when a matching and address can perform a POST action to a predetermined URL. | ||
For example when delivering email via ``postmaster`` utility | ||
on linux the ``etc/alias`` file would need to contain:: | ||
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reply: "| curl -F key='123' -F body='<-' https://www.mybiostar.org/local/email/ | ||
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The above line will trigger a submit action | ||
every time that an email is received that matches the address words ``reply``. | ||
For example: ``reply@server.org`` | ||
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Important: Biostar will send emails as ``reply+1238429283+code@server.org``. The segment between the | ||
two ``+`` signs is unique to the user and post and are required for the | ||
post to be inserted in the correct location. The email server | ||
will have to properly interpret the ``+`` signs and route this email via the ``reply@server.org`` address. | ||
Now the default installations of ``postmaster`` already work this way, and | ||
it is an internal settings to ``postmaster``. This pattern that routes the email | ||
must match the ``EMAIL_REPLY_PATTERN`` setting in Biostar. | ||
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The ``key=123`` parameter is just an additional measure that | ||
prevent someone flooding the email service. The value is set via | ||
the ``EMAIL_REPLY_SECRET_KEY`` settings. | ||
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The default settings that govern the email reply service are the following:: | ||
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# What address pattern will handle the replies. | ||
EMAIL_REPLY_PATTERN = "reply+%s+code@biostars.io" | ||
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# The format of the email address that is sent | ||
EMAIL_FROM_PATTERN = u'''"%s on Biostar" <%s>''' | ||
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# The secret key that is required to parse the email | ||
EMAIL_REPLY_SECRET_KEY = "abc" | ||
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# The subject of the reply goes here | ||
EMAIL_REPLY_SUBJECT = u"[biostar] %s" | ||
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Note: when you set the alias remember to restart the services:: | ||
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sudo postalias /etc/alias | ||
sudo service postmaster restart | ||
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A simpler setup that requires no local SMTP servers | ||
could reply on commercial services such as mailgun and others. | ||
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Social authentication | ||
--------------------- | ||
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The social logins settings will need to be initialized with the proper | ||
authentication parameters. Typically this involves creating an | ||
application at the provider and obtaining the credentials. | ||
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See the ``conf/defaults.env`` for the proper variable naming. | ||
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Adding Facebook authentication: | ||
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* Create Authentication App: http://developers.facebook.com/setup/ | ||
* More information: Facebook Developer Resources: http://developers.facebook.com/docs/authentication/ | ||
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Adding Google authentication: | ||
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* Google Developer Console: https://cloud.google.com/console/project | ||
* Create new project and copy data from credentials | ||
* Callback must be ``http://domain/accounts/google/login/callback/`` | ||
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Twitter: | ||
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* Add your application at Twitter Apps Interface: http://twitter.com/apps/ | ||
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ORCID: | ||
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* Enable "Developer Tools" in your ORCID account, following these instructions: http://support.orcid.org/knowledgebase/articles/343182-register-a-client-with-the-public-api | ||
* Create new application: https://orcid.org/developer-tools | ||
* Redirect URI must be ``http://domain/accounts/orcid/login/callback/`` | ||
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External authentication | ||
----------------------- | ||
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Other domains can provide authentication for Biostar by setting a cookie | ||
with a certain value. For this to work Biostar will have to be set to | ||
run as a subdomain of the hosting site. | ||
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Cookie settings | ||
^^^^^^^^^^^^^^^ | ||
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The cookie value needs to contain the ``email:hash`` as value. | ||
For exampl if the ``EXTERNAL_AUTH`` django settings are:: | ||
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# Cookie name, cookie secret key pair | ||
EXTERNAL_AUTH = [ | ||
("foo.bar.com", "ABC"), | ||
] | ||
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If an unauthenticated user sends a cookie named ``foo.bar.com`` with the value:: | ||
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foo@bar.com:d46d8c07777e3adf739cfc0c432759b0 | ||
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then Biostar will automatically log in the user. It will automatically create | ||
an account for the user if the email does not already exist. | ||
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Setting the ``EXTERNAL_LOGIN_URL`` and ``EXTERNAL_LOGOUT_URL`` settings will also | ||
perform the redirects to the external site login and logout urls:: | ||
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EXTERNAL_LOGIN_URL = "http://some.site.com/login" | ||
EXTERNAL_LOGOUT_URL = "http://some.site.com/logout" | ||
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Generating the value is simple like so:: | ||
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email = "foo@bar.com" | ||
digest = hmac.new(key, email).hexdigest() | ||
value = "%s:%s" % (email, digest) | ||
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Prefill post | ||
^^^^^^^^^^^^ | ||
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Set the ``title``, ``tag_val``, ``content`` and ``category`` fields of a | ||
get request to pre-populate a question:: | ||
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http://localhost:8080/p/new/post/?title=Need+help+with+bwa&tag_val=bwa+samtools&content=What+does+it+do?&category=SNP-Calling | ||
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Migrating from Biostar 1.X | ||
-------------------------- | ||
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Due to the complete rework there is no database schema migration. | ||
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Instead users of | ||
Biostar 1 site are expected to export their data with a script provided in Biostar 1 | ||
then import it with a management command provided with Biostar 2. | ||
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The migration will take the following steps: | ||
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1. Set the ``BIOSTAR_MIGRATE_DIR`` environment variable to point to a work directory that | ||
will hold the temporary data, for example ``export BIOSTAR_MIGRATE_DIR="~/tmp/biostar_export"`` | ||
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2. Load the environment variables for the Biostar 1 site | ||
then run ``python -m main.bin.export -u -p -v``. This will dump the contents of the site | ||
into the directory that ``BIOSTAR_MIGRATE_DIR`` points to. | ||
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3. Load the environment variables for you Biostar 2 site then run the | ||
``./biostar.sh import_biostar1`` command. | ||
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Some caveats, depending how you set the variables you may need to be located in | ||
the root of your site. This applies for the default settings that both sites come | ||
with, as the root is determined relative to the directory that the command is run in. |
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