Installing NAV from source code¶
This is a generic guide to installing NAV from source code on a *NIX flavored operating system. The specifics of how to install NAV’s dependencies, such as PostgreSQL or Graphite will be entirely up to you and your choice of OS.
This section specifies what software packages are needed to build and run NAV. Be aware that many of these packages have dependencies of their own.
To build NAV, you need at least the following:
Python >= 3.7.0
Sphinx >= 1.0 (for building this documentation)
To run NAV, these software packages are required:
Apache2 + mod_wsgi (or, really, any web server that supports the WSGI interface)
PostgreSQL >= 9.4 (With the
Python >= 3.7.0
nbtscan = 1.5.1
dhcping (only needed if using DHCP service monitor)
PostgreSQL and Graphite are services that do not necessarily need to run on the same server as NAV.
The required Python modules can be installed either from your OS package
manager, or from the Python Package Index (PyPI) using the regular
method described below. The packages can also be installed from PyPI in a
separate step, using the pip tool and the provided requirements files:
pip install -r requirements.txt
However, some of the required modules are C extensions that will require the
presence of some C libraries to be correctly built (unless PyPI provides binary
wheels for your platform). These include the
psycopg2 driver and the
The current Python requirements are as follows:
# for debian build-deps, see the apt-get commands in # Dockerfile asciitree==0.3.3 # optional, for naventity psycopg2==2.8.4 # requires libpq to build IPy==1.00 pyaml twisted>=16.6.0,<18 networkx>=2.2,<2.3 Pillow>3.3.2,<8.1 pyrad==2.1 python-ldap==3.0.0 # optional for LDAP authentication, requires libldap (OpenLDAP) to build sphinx>=1.8.0 feedparser>=5.2.1,<5.3 markdown==2.5.1 dnspython==1.15.0 # REST framework iso8601 pynetsnmp-2==0.1.5 # libsass for compiling scss files to css using distutils/setuptools libsass==0.15.1 napalm==3.0.1
If you want to connect a mobile phone to your NAV server and enable SMS alerts
in alert profiles, you will need to install Gammu and the Python
gammu module. The SMS daemon can use plugins to dispatch text
messages through other means, but using Gammu as an SMS dispatcher is the
To build and install NAV and all its Python dependencies:
pip install -r requirements.txt .
This will build and install NAV in the default system-wide directories for your
system. If you wish to customize the install locations, please consult the
python setup.py install --help.
Initializing the configuration¶
NAV will look for its configuration files in various locations on your file system. These locations can be listed by running:
nav config path
To install a set of pristine NAV configuration files into one of these locations,
nav config install /etc/nav
To verify that NAV can find its main configuration file, run:
nav config where
Initializing the database¶
Before NAV can run, the database schema must be installed in your PostgreSQL server. NAV can create a database user and a database schema for you.
Choose a password for your NAV database user and set this in the
db.conf config file. As the
postgres superuser, run the following
This will attempt to create a new database user, a new database and initialize it with NAV’s schema.
Configuring the web interface¶
NAV’s web interface is implemented using the Django framework, and can be served in any web server environment supported by Django (chiefly, any environment that supports WSGI). This guide is primarily concerned with Apache 2.
An example configuration file for Apache2 is provided the configuration
apache/apache.conf.example. This configuration uses
mod_wsgi to serve the NAV web application, and can be modified to suit your
installation paths. Once complete, it can be included in your virtualhost
config, which needn’t contain much more than this:
ServerName nav.example.org ServerAdmin email@example.com Include /path/to/your/nav/apache.conf
You should always protect your NAV web site using SSL!
Installing static resources¶
You want your web server to be able to serve all of NAV’s static resources. You can install all of them by issuing the following command:
# django-admin collectstatic --settings=nav.django.settings You have requested to collect static files at the destination location as specified in your settings: /usr/share/nav/www/static This will overwrite existing files! Are you sure you want to do this? Type 'yes' to continue, or 'no' to cancel:
In this example, type yes, hit Enter, and ensure your web server’s
document root points to
/usr/share/nav/www, because that is where the
static directory is located. If that doesn’t suit you, you will at
least need an Alias to point the
/static URL to the
Users and privileges¶
Apart from the
snmptrapd daemons, no NAV processes should
ever be run as
root. You should create a non-privileged system user and
group, and ensure the
NAV_USER option in
nav.conf is set
accordingly. Also make sure this user has permissions to write to the directories
snmptrapd daemons must be started as
to be able to create privileged communication sockets. Both daemons
will drop privileges and run as the configured non-privileged user as
soon as the sockets have been acquired.
Building the documentation¶
If you wish, this HTML documentation can be built separately using this step:
python setup.py build_sphinx
The resulting files will typically be placed in
If you want to serve this documentation on your NAV web server, you should copy
html directory to a suitable location and make sure that location is served
/doc on the web server. If using the example Apache configuration
apache.conf.example), there is a define named
which can be set to point to this file system location.