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389 lines
11 KiB
ReStructuredText
.. _installation apache:
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======
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Apache
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======
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.. _Apache: https://httpd.apache.org/
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.. _Apache Debian:
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https://cwiki.apache.org/confluence/display/HTTPD/DistrosDefaultLayout#DistrosDefaultLayout-Debian,Ubuntu(Apachehttpd2.x):
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.. _apache2.README.Debian:
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https://salsa.debian.org/apache-team/apache2/raw/master/debian/apache2.README.Debian
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.. _Apache Arch Linux:
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https://wiki.archlinux.org/index.php/Apache_HTTP_Server
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.. _Apache Fedora:
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https://docs.fedoraproject.org/en-US/quick-docs/getting-started-with-apache-http-server/index.html
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.. _Apache directives:
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https://httpd.apache.org/docs/trunk/mod/directives.html
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.. _Getting Started:
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https://httpd.apache.org/docs/current/en/getting-started.html
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.. _Terms Used to Describe Directives:
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https://httpd.apache.org/docs/current/en/mod/directive-dict.html
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.. _Configuration Files:
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https://httpd.apache.org/docs/current/en/configuring.html
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.. _ProxyPreserveHost: https://httpd.apache.org/docs/trunk/mod/mod_proxy.html#proxypreservehost
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.. _LoadModule:
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https://httpd.apache.org/docs/mod/mod_so.html#loadmodule
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.. _IncludeOptional:
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https://httpd.apache.org/docs/mod/core.html#includeoptional
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.. _DocumentRoot:
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https://httpd.apache.org/docs/trunk/mod/core.html#documentroot
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.. _Location:
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https://httpd.apache.org/docs/trunk/mod/core.html#location
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.. _uWSGI Apache support:
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https://uwsgi-docs.readthedocs.io/en/latest/Apache.html
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.. _mod_proxy_uwsgi:
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https://uwsgi-docs.readthedocs.io/en/latest/Apache.html#mod-proxy-uwsgi
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.. _mod_proxy_http:
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https://httpd.apache.org/docs/current/mod/mod_proxy_http.html
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.. _mod_proxy:
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https://httpd.apache.org/docs/current/mod/mod_proxy.html
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This section explains how to set up a SearXNG instance using the HTTP server Apache_.
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If you did use the :ref:`installation scripts` and do not have any special preferences
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you can install the :ref:`SearXNG site <apache searxng site>` using
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:ref:`searxng.sh <searxng.sh overview>`:
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.. code:: bash
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$ sudo -H ./utils/searxng.sh install apache
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If you have special interests or problems with setting up Apache, the following
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section might give you some guidance.
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.. sidebar:: further read
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- `Apache Arch Linux`_
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- `Apache Debian`_
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- `apache2.README.Debian`_
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- `Apache Fedora`_
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- `Apache directives`_
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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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The Apache HTTP server
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======================
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If Apache_ is not installed, install it now. If apache_ is new to you, the
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`Getting Started`_, `Configuration Files`_ and `Terms Used to Describe
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Directives`_ documentation gives first orientation. There is also a list of
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`Apache directives`_ *to keep in the pocket*.
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.. tabs::
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.. group-tab:: Ubuntu / debian
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.. code:: bash
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sudo -H apt-get install apache2
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.. group-tab:: Arch Linux
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.. code:: bash
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sudo -H pacman -S apache
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sudo -H systemctl enable httpd
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sudo -H systemctl start http
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.. group-tab:: Fedora / RHEL
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.. code:: bash
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sudo -H dnf install httpd
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sudo -H systemctl enable httpd
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sudo -H systemctl start httpd
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Now at http://localhost you should see some kind of *Welcome* or *Test* page.
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How this default site is configured, depends on the linux distribution
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(compare `Apache directives`_).
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.. tabs::
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.. group-tab:: Ubuntu / debian
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.. code:: bash
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less /etc/apache2/sites-enabled/000-default.conf
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In this file, there is a line setting the `DocumentRoot`_ directive:
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.. code:: apache
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DocumentRoot /var/www/html
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And the *welcome* page is the HTML file at ``/var/www/html/index.html``.
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.. group-tab:: Arch Linux
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.. code:: bash
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less /etc/httpd/conf/httpd.conf
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In this file, there is a line setting the `DocumentRoot`_ directive:
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.. code:: apache
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DocumentRoot "/srv/http"
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<Directory "/srv/http">
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Options Indexes FollowSymLinks
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AllowOverride None
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Require all granted
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</Directory>
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The *welcome* page of Arch Linux is a page showing the directory located
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at ``DocumentRoot``. This *directory* page is generated by the Module
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`mod_autoindex <https://httpd.apache.org/docs/2.4/mod/mod_autoindex.html>`_:
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.. code:: apache
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LoadModule autoindex_module modules/mod_autoindex.so
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...
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Include conf/extra/httpd-autoindex.conf
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.. group-tab:: Fedora / RHEL
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.. code:: bash
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less /etc/httpd/conf/httpd.conf
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In this file, there is a line setting the ``DocumentRoot`` directive:
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.. code:: apache
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DocumentRoot "/var/www/html"
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...
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<Directory "/var/www">
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AllowOverride None
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# Allow open access:
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Require all granted
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</Directory>
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On fresh installations, the ``/var/www`` is empty and the *default
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welcome page* is shown, the configuration is located at::
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less /etc/httpd/conf.d/welcome.conf
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.. _Debian's Apache layout:
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Debian's Apache layout
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----------------------
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Be aware, Debian's Apache layout is quite different from the standard Apache
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configuration. For details look at the apache2.README.Debian_
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(``/usr/share/doc/apache2/README.Debian.gz``). Some commands you should know on
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Debian:
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* :man:`apache2ctl`: Apache HTTP server control interface
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* :man:`a2enmod`, :man:`a2dismod`: switch on/off modules
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* :man:`a2enconf`, :man:`a2disconf`: switch on/off configurations
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* :man:`a2ensite`, :man:`a2dissite`: switch on/off sites
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.. _apache modules:
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Apache modules
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--------------
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To load additional modules, in most distributions you have to un-comment the
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lines with the corresponding LoadModule_ directive, except in :ref:`Debian's
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Apache layout`.
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.. tabs::
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.. group-tab:: Ubuntu / debian
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:ref:`Debian's Apache layout` uses :man:`a2enmod` and :man:`a2dismod` to
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activate or disable modules:
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.. code:: bash
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sudo -H a2enmod ssl
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sudo -H a2enmod headers
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sudo -H a2enmod proxy
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sudo -H a2enmod proxy_http
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sudo -H a2enmod proxy_uwsgi
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.. group-tab:: Arch Linux
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In the ``/etc/httpd/conf/httpd.conf`` file, activate LoadModule_
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directives:
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.. code:: apache
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LoadModule ssl_module modules/mod_ssl.so
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LoadModule headers_module modules/mod_headers.so
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LoadModule proxy_module modules/mod_proxy.so
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LoadModule proxy_http_module modules/mod_proxy_http.so
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LoadModule proxy_uwsgi_module modules/mod_proxy_uwsgi.so
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.. group-tab:: Fedora / RHEL
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In the ``/etc/httpd/conf/httpd.conf`` file, activate LoadModule_
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directives:
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.. code:: apache
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LoadModule ssl_module modules/mod_ssl.so
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LoadModule headers_module modules/mod_headers.so
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LoadModule proxy_module modules/mod_proxy.so
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LoadModule proxy_http_module modules/mod_proxy_http.so
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LoadModule proxy_uwsgi_module modules/mod_proxy_uwsgi.so
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.. _apache sites:
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Apache sites
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------------
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.. tabs::
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.. group-tab:: Ubuntu / debian
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In :ref:`Debian's Apache layout` you create a ``searxng.conf`` with the
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``<Location /searxng >`` directive and save this file in the *sites
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available* folder at ``/etc/apache2/sites-available``. To enable the
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``searxng.conf`` use :man:`a2ensite`:
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.. code:: bash
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sudo -H a2ensite searxng.conf
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.. group-tab:: Arch Linux
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In the ``/etc/httpd/conf/httpd.conf`` file add a IncludeOptional_
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directive:
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.. code:: apache
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IncludeOptional sites-enabled/*.conf
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Create two folders, one for the *available sites* and one for the *enabled sites*:
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.. code:: bash
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mkdir -p /etc/httpd/sites-available
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mkdir -p /etc/httpd/sites-enabled
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Create configuration at ``/etc/httpd/sites-available`` and place a
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symlink to ``sites-enabled``:
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.. code:: bash
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sudo -H ln -s /etc/httpd/sites-available/searxng.conf \
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/etc/httpd/sites-enabled/searxng.conf
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.. group-tab:: Fedora / RHEL
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In the ``/etc/httpd/conf/httpd.conf`` file add a IncludeOptional_
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directive:
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.. code:: apache
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IncludeOptional sites-enabled/*.conf
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Create two folders, one for the *available sites* and one for the *enabled sites*:
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.. code:: bash
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mkdir -p /etc/httpd/sites-available
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mkdir -p /etc/httpd/sites-enabled
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Create configuration at ``/etc/httpd/sites-available`` and place a
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symlink to ``sites-enabled``:
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.. code:: bash
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sudo -H ln -s /etc/httpd/sites-available/searxng.conf \
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/etc/httpd/sites-enabled/searxng.conf
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.. _apache searxng site:
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Apache's SearXNG site
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=====================
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.. _mod_uwsgi: https://uwsgi-docs.readthedocs.io/en/latest/Apache.html#mod-uwsgi
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.. sidebar:: uWSGI
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Use mod_proxy_uwsgi_ / don't use the old mod_uwsgi_ anymore.
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To proxy the incoming requests to the SearXNG instance Apache needs the
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mod_proxy_ module (:ref:`apache modules`).
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.. sidebar:: HTTP headers
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With ProxyPreserveHost_ the incoming ``Host`` header is passed to the proxied
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host.
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Depending on what your SearXNG installation is listening on, you need a http
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mod_proxy_http_) or socket (mod_proxy_uwsgi_) communication to upstream.
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The :ref:`installation scripts` installs the :ref:`reference setup
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<use_default_settings.yml>` and a :ref:`uwsgi setup` that listens on a socket by default.
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You can install and activate your own ``searxng.conf`` like shown in
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:ref:`apache sites`.
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.. tabs::
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.. group-tab:: socket
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.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
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:start-after: START apache socket
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:end-before: END apache socket
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.. group-tab:: http
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.. kernel-include:: $DOCS_BUILD/includes/searxng.rst
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:start-after: START apache http
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:end-before: END apache http
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.. _restart apache:
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Restart service:
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.. tabs::
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.. group-tab:: Ubuntu / debian
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.. code:: bash
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sudo -H systemctl restart apache2
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sudo -H service uwsgi restart searxng
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.. group-tab:: Arch Linux
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.. code:: bash
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sudo -H systemctl restart httpd
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sudo -H systemctl restart uwsgi@searxng
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.. group-tab:: Fedora / RHEL
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.. code:: bash
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sudo -H systemctl restart httpd
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sudo -H touch /etc/uwsgi.d/searxng.ini
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disable logs
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============
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For better privacy you can disable Apache logs. In the examples above activate
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one of the lines and `restart apache`_:
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.. code:: apache
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SetEnvIf Request_URI "/searxng" dontlog
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# CustomLog /dev/null combined env=dontlog
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The ``CustomLog`` directive disables logs for the entire (virtual) server, use it
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when the URL of the service does not have a path component (``/searxng``), so when
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SearXNG is located at root (``/``).
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