.. _installation:

============
Installation
============

.. contents::
   :depth: 3

Basic installation
==================

Step by step installation for Debian/Ubuntu with virtualenv. For Ubuntu, be sure
to have enable universe repository.

Install packages:

.. code:: sh

    $ sudo -H apt-get install \
           git build-essential libxslt-dev \
	   python-dev python-virtualenv python-babel \
	   zlib1g-dev libffi-dev libssl-dev

Install searx:

.. code:: sh

    cd /usr/local
    sudo -H git clone https://github.com/asciimoo/searx.git
    sudo -H useradd searx -d /usr/local/searx
    sudo -H chown searx:searx -R /usr/local/searx

Install dependencies in a virtualenv:

.. code:: sh

    cd /usr/local/searx
    sudo -H -u searx -i

.. code:: sh

    (searx)$ virtualenv searx-ve
    (searx)$ . ./searx-ve/bin/activate
    (searx)$ ./manage.sh update_packages

Configuration
==============

.. code:: sh

    sed -i -e "s/ultrasecretkey/`openssl rand -hex 16`/g" searx/settings.yml

Edit searx/settings.yml if necessary.

Check
=====

Start searx:

.. code:: sh

    python searx/webapp.py

Go to http://localhost:8888

If everything works fine, disable the debug option in settings.yml:

.. code:: sh

    sed -i -e "s/debug : True/debug : False/g" searx/settings.yml

At this point searx is not demonized ; uwsgi allows this.

You can exit the virtualenv and the searx user bash (enter exit command
twice).

uwsgi
=====

Install packages:

.. code:: sh

    sudo -H apt-get install \
         uwsgi uwsgi-plugin-python

Create the configuration file ``/etc/uwsgi/apps-available/searx.ini`` with this
content:

.. code:: ini

    [uwsgi]
    # Who will run the code
    uid = searx
    gid = searx

    # disable logging for privacy
    disable-logging = true

    # Number of workers (usually CPU count)
    workers = 4

    # The right granted on the created socket
    chmod-socket = 666

    # Plugin to use and interpretor config
    single-interpreter = true
    master = true
    plugin = python
    lazy-apps = true
    enable-threads = true

    # Module to import
    module = searx.webapp

    # Virtualenv and python path
    virtualenv = /usr/local/searx/searx-ve/
    pythonpath = /usr/local/searx/
    chdir = /usr/local/searx/searx/

Activate the uwsgi application and restart:

.. code:: sh

    cd /etc/uwsgi/apps-enabled
    ln -s ../apps-available/searx.ini
    /etc/init.d/uwsgi restart

Web server
==========

with nginx
----------

If nginx is not installed (uwsgi will not work with the package
nginx-light):

.. code:: sh

    sudo -H apt-get install nginx

Hosted at /
~~~~~~~~~~~

Create the configuration file ``/etc/nginx/sites-available/searx`` with this
content:

.. code:: nginx

    server {
        listen 80;
        server_name searx.example.com;
        root /usr/local/searx;

        location / {
                include uwsgi_params;
                uwsgi_pass unix:/run/uwsgi/app/searx/socket;
        }
    }

Create a symlink to sites-enabled:

.. code:: sh

   sudo -H ln -s /etc/nginx/sites-available/searx /etc/nginx/sites-enabled/searx

Restart service:

.. code:: sh

    sudo -H service nginx restart
    sudo -H service uwsgi restart

from subdirectory URL (/searx)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Add this configuration in the server config file
``/etc/nginx/sites-enabled/default``:

.. code:: nginx

    location = /searx { rewrite ^ /searx/; }
    location /searx {
            try_files $uri @searx;
    }
    location @searx {
            uwsgi_param SCRIPT_NAME /searx;
            include uwsgi_params;
            uwsgi_modifier1 30;
            uwsgi_pass unix:/run/uwsgi/app/searx/socket;
    }


**OR** using reverse proxy (Please, note that reverse proxy advised to be used
in case of single-user or low-traffic instances.)

.. code:: nginx

    location /searx {
        proxy_pass http://127.0.0.1:8888;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Scheme $scheme;
        proxy_set_header X-Script-Name /searx;
        proxy_buffering off;
    }


Enable ``base_url`` in ``searx/settings.yml``

.. code:: yaml

    base_url : http://your.domain.tld/searx/

Restart service:

.. code:: sh

    sudo -H service nginx restart
    sudo -H service uwsgi restart

disable logs
^^^^^^^^^^^^

for better privacy you can disable nginx logs about searx.

how to proceed: below ``uwsgi_pass`` in ``/etc/nginx/sites-available/default``
add:

.. code:: nginx

    access_log /dev/null;
    error_log /dev/null;

Restart service:

.. code:: sh

    sudo -H service nginx restart

with apache
-----------

Add wsgi mod:

.. code:: sh

    sudo -H apt-get install libapache2-mod-uwsgi
    sudo -H a2enmod uwsgi

Add this configuration in the file ``/etc/apache2/apache2.conf``:

.. code:: apache

    <Location />
        Options FollowSymLinks Indexes
        SetHandler uwsgi-handler
        uWSGISocket /run/uwsgi/app/searx/socket
    </Location>

Note that if your instance of searx is not at the root, you should change
``<Location />`` by the location of your instance, like ``<Location /searx>``.

Restart Apache:

.. code:: sh

    sudo -H /etc/init.d/apache2 restart

disable logs
~~~~~~~~~~~~

For better privacy you can disable Apache logs.

.. warning::

   You can only disable logs for the whole (virtual) server not for a specific
   path.

Go back to ``/etc/apache2/apache2.conf`` and above ``<Location />`` add:

.. code:: apache

    CustomLog /dev/null combined

Restart Apache:

.. code:: sh

    sudo -H /etc/init.d/apache2 restart

How to update
=============

.. code:: sh

    cd /usr/local/searx
    sudo -H -u searx -i

.. code:: sh

    (searx)$ . ./searx-ve/bin/activate
    (searx)$ git stash
    (searx)$ git pull origin master
    (searx)$ git stash apply
    (searx)$ ./manage.sh update_packages

.. code:: sh

    sudo -H service uwsgi restart

Docker
======

Make sure you have installed Docker. For instance, you can deploy searx like this:

.. code:: sh

    docker pull wonderfall/searx
    docker run -d --name searx -p $PORT:8888 wonderfall/searx

Go to ``http://localhost:$PORT``.

See https://hub.docker.com/r/wonderfall/searx/ for more informations.  It's also
possible to build searx from the embedded Dockerfile.

.. code:: sh

   git clone https://github.com/asciimoo/searx.git
   cd searx
   docker build -t whatever/searx .

References
==========

* https://about.okhin.fr/posts/Searx/ with some additions

* How to: `Setup searx in a couple of hours with a free SSL certificate
  <https://www.reddit.com/r/privacytoolsIO/comments/366kvn/how_to_setup_your_own_privacy_respecting_search/>`__

