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The suggested configurations for nginx found in the documentation and templates lead to vulnerabilities allowing host spoofing [1] and path traversal [2], as reported by Gixy [3]. This commit fixes those issues. [1] https://github.com/yandex/gixy/blob/master/docs/en/plugins/hostspoofing.md [2] https://github.com/yandex/gixy/blob/master/docs/en/plugins/aliastraversal.md [3] https://github.com/yandex/gixy
383 lines
10 KiB
ReStructuredText
383 lines
10 KiB
ReStructuredText
.. _installation nginx:
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==================
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Install with nginx
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==================
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.. _nginx:
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https://docs.nginx.com/nginx/admin-guide/
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.. _nginx server configuration:
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https://docs.nginx.com/nginx/admin-guide/web-server/web-server/#setting-up-virtual-servers
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.. _nginx beginners guide:
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https://nginx.org/en/docs/beginners_guide.html
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.. _Getting Started wiki:
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https://www.nginx.com/resources/wiki/start/
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.. _uWSGI support from nginx:
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https://uwsgi-docs.readthedocs.io/en/latest/Nginx.html
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.. _uwsgi_params:
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https://uwsgi-docs.readthedocs.io/en/latest/Nginx.html#configuring-nginx
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.. _SCRIPT_NAME:
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https://werkzeug.palletsprojects.com/en/1.0.x/wsgi/#werkzeug.wsgi.get_script_name
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.. sidebar:: further reading
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- nginx_
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- `nginx beginners guide`_
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- `nginx server configuration`_
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- `Getting Started wiki`_
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- `uWSGI support from nginx`_
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.. contents:: Contents
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:depth: 2
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:local:
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:backlinks: entry
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----
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**Install** :ref:`nginx searx site` using :ref:`filtron.sh <filtron.sh overview>`
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.. code:: bash
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$ sudo -H ./utils/filtron.sh nginx install
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**Install** :ref:`nginx searx site` using :ref:`morty.sh <morty.sh overview>`
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.. code:: bash
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$ sudo -H ./utils/morty.sh nginx install
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----
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The nginx HTTP server
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=====================
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If nginx_ is not installed (uwsgi will not work with the package nginx-light),
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install it now.
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.. tabs::
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.. group-tab:: Ubuntu / debian
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.. code:: sh
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sudo -H apt-get install nginx
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.. group-tab:: Arch Linux
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.. code-block:: sh
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sudo -H pacman -S nginx-mainline
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sudo -H systemctl enable nginx
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sudo -H systemctl start nginx
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.. group-tab:: Fedora / RHEL
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.. code-block:: sh
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sudo -H dnf install nginx
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sudo -H systemctl enable nginx
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sudo -H systemctl start nginx
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Now at http://localhost you should see a *Welcome to nginx!* page, on Fedora you
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see a *Fedora Webserver - Test Page*. The test page comes from the default
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`nginx server configuration`_. How this default intro site is configured,
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depends on the linux distribution:
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.. tabs::
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.. group-tab:: Ubuntu / debian
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.. code:: sh
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less /etc/nginx/nginx.conf
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there is a line including site configurations from:
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.. code:: nginx
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include /etc/nginx/sites-enabled/*;
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.. group-tab:: Arch Linux
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.. code-block:: sh
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less /etc/nginx/nginx.conf
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in there is a configuration section named ``server``:
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.. code-block:: nginx
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server {
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listen 80;
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server_name localhost;
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# ...
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}
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.. group-tab:: Fedora / RHEL
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.. code-block:: sh
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less /etc/nginx/nginx.conf
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there is a line including site configurations from:
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.. code:: nginx
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include /etc/nginx/conf.d/*.conf;
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.. _nginx searx site:
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A nginx searx site
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==================
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.. sidebar:: public to the internet?
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If your searx instance is public, stop here and first install :ref:`filtron
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reverse proxy <filtron.sh>` and :ref:`result proxy morty <morty.sh>`, see
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:ref:`installation scripts`. If already done, follow setup: *searx via
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filtron plus morty*.
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Now you have to create a configuration for the searx site. If nginx_ is new to
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you, the `nginx beginners guide`_ is a good starting point and the `Getting
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Started wiki`_ is always a good resource *to keep in the pocket*.
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.. tabs::
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.. group-tab:: Ubuntu / debian
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Create configuration at ``/etc/nginx/sites-available/searx`` and place a
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symlink to sites-enabled:
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.. code:: sh
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sudo -H ln -s /etc/nginx/sites-available/searx /etc/nginx/sites-enabled/searx
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.. group-tab:: Arch Linux
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In the ``/etc/nginx/nginx.conf`` file, replace the configuration section
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named ``server``.
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.. group-tab:: Fedora / RHEL
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Create configuration at ``/etc/nginx/conf.d/searx`` and place a
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symlink to sites-enabled:
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.. _nginx searx via filtron plus morty:
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.. tabs::
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.. group-tab:: searx via filtron plus morty
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Use this setup, if your instance is public to the internet, compare
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figure: :ref:`architecture <arch public>` and :ref:`installation scripts`.
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1. Configure a reverse proxy for :ref:`filtron <filtron.sh>`, listening on
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*localhost 4004* (:ref:`filtron route request`):
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.. code:: nginx
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# https://example.org/searx
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location /searx {
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proxy_pass http://127.0.0.1:4004/;
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proxy_set_header Host $host;
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proxy_set_header Connection $http_connection;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Scheme $scheme;
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proxy_set_header X-Script-Name /searx;
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}
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location /searx/static/ {
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alias /usr/local/searx/searx-src/searx/static/;
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}
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2. Configure reverse proxy for :ref:`morty <searx morty>`, listening on
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*localhost 3000*:
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.. code:: nginx
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# https://example.org/morty
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location /morty {
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proxy_pass http://127.0.0.1:3000/;
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proxy_set_header Host $host;
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proxy_set_header Connection $http_connection;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Scheme $scheme;
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}
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For a fully result proxification add :ref:`morty's <searx morty>` **public
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URL** to your :origin:`searx/settings.yml`:
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.. code:: yaml
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result_proxy:
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# replace example.org with your server's public name
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url : https://example.org/morty
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key : !!binary "insert_your_morty_proxy_key_here"
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server:
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image_proxy : True
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.. group-tab:: proxy or uWSGI
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Be warned, with this setup, your instance isn't :ref:`protected <searx
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filtron>`. Nevertheless it is good enough for intranet usage and it is a
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excellent example of; *how different services can be set up*. The next
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example shows a reverse proxy configuration wrapping the :ref:`searx-uWSGI
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application <uwsgi configuration>`, listening on ``http =
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127.0.0.1:8888``.
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.. code:: nginx
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# https://hostname.local/
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location / {
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proxy_pass http://127.0.0.1:8888;
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proxy_set_header Host $host;
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proxy_set_header Connection $http_connection;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Scheme $scheme;
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proxy_buffering off;
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}
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Alternatively you can use the `uWSGI support from nginx`_ via unix
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sockets. For socket communication, you have to activate ``socket =
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/run/uwsgi/app/searx/socket`` and comment out the ``http =
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127.0.0.1:8888`` configuration in your :ref:`uwsgi ini file <uwsgi
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configuration>`.
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The example shows a nginx virtual ``server`` configuration, listening on
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port 80 (IPv4 and IPv6 http://[::]:80). The uWSGI app is configured at
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location ``/`` by importing the `uwsgi_params`_ and passing requests to
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the uWSGI socket (``uwsgi_pass``). The ``server``\'s root points to the
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:ref:`searx-src clone <searx-src>` and wraps directly the
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:origin:`searx/static/` content at ``location /static``.
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.. code:: nginx
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server {
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# replace hostname.local with your server's name
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server_name hostname.local;
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listen 80;
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listen [::]:80;
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location / {
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include uwsgi_params;
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uwsgi_pass unix:/run/uwsgi/app/searx/socket;
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}
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root /usr/local/searx/searx-src/searx;
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location /static { }
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}
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If not already exists, create a folder for the unix sockets, which can be
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used by the searx account:
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.. code:: bash
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mkdir -p /run/uwsgi/app/searx/
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sudo -H chown -R searx:searx /run/uwsgi/app/searx/
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.. group-tab:: \.\. at subdir URL
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Be warned, with these setups, your instance isn't :ref:`protected <searx
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filtron>`. The examples are just here to demonstrate how to export the
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searx application from a subdirectory URL ``https://example.org/searx/``.
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.. code:: nginx
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# https://hostname.local/searx
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location /searx {
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proxy_pass http://127.0.0.1:8888;
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proxy_set_header Host $host;
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proxy_set_header Connection $http_connection;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Scheme $scheme;
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proxy_set_header X-Script-Name /searx;
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proxy_buffering off;
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}
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location /searx/static/ {
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alias /usr/local/searx/searx-src/searx/static/;
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}
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The ``X-Script-Name /searx`` is needed by the searx implementation to
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calculate relative URLs correct. The next example shows a uWSGI
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configuration. Since there are no HTTP headers in a (u)WSGI protocol, the
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value is shipped via the SCRIPT_NAME_ in the WSGI environment.
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.. code:: nginx
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# https://hostname.local/searx
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location /searx {
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uwsgi_param SCRIPT_NAME /searx;
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include uwsgi_params;
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uwsgi_pass unix:/run/uwsgi/app/searx/socket;
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}
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location /searx/static/ {
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alias /usr/local/searx/searx-src/searx/;
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}
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For searx to work correctly the ``base_url`` must be set in the
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:origin:`searx/settings.yml`.
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.. code:: yaml
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server:
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# replace example.org with your server's public name
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base_url : https://example.org/searx/
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Restart service:
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.. tabs::
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.. group-tab:: Ubuntu / debian
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.. code:: sh
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sudo -H systemctl restart nginx
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sudo -H service uwsgi restart searx
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.. group-tab:: Arch Linux
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.. code:: sh
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sudo -H systemctl restart nginx
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sudo -H systemctl restart uwsgi@searx
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.. group-tab:: Fedora
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.. code:: sh
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sudo -H systemctl restart nginx
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sudo -H touch /etc/uwsgi.d/searx.ini
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Disable logs
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============
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For better privacy you can disable nginx logs in ``/etc/nginx/nginx.conf``.
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.. code:: nginx
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http {
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# ...
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access_log /dev/null;
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error_log /dev/null;
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# ...
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}
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