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{% extends "common/base.j2" %}
{% block body_content %}
<article class="container">
<header>
<h1>{{ _("Tutorial: GNUnet on OpenWrt") }}</h1>
</header>
Welcome to this GNUnet tutorial for <a href="https://www.openwrt.org">OpenWrt</a>.
Running on OpenWrt allows having a GNUnet node on embedded Linux systems or
inside a very tiny virtual machine. This tutorial shows you how to
install, run, and operate it.
<h2>{{ _("Installation") }}</h2>
<p>To run GNUnet in a meaningful way, you will need a system with at least 16MB
of flash storage and at least 64MB of RAM (128MB of more recommended).</p>
<p>OpenWrt ships with up-to-date packages of GNUnet, so you can install it right
from the OpenWrt packages repository without having to build things from source
by yourself.</p>
<p>GNUnet has been split into a high number of small packages, allowing to select
anything between the most simple setup supporting GNS and gnunet-vpn:
<p><code>
root@OpenWrt:/# opkg update<br/>
...<br/>
root@OpenWrt:/# opkg install gnunet gnunet-gns-flat gnunet-peerstore-flat gnunet-vpn gnunet-transport-tcp gnunet-transport-http_client
</code></p>
<p>...and a full blown GNUnet node for filesharing:</p>
<p>First of all, setup an external (USB, ...) storage volume to contain GNUnet's databases, see <a href="https://openwrt.org/docs/guide-user/storage/fstab">OpenWrt's user guide: Fstab Configuration</a>.<br/>Then install PostgreSQL:</p>
<p><code>
root@OpenWrt:/# opkg update<br/>
...<br/>
root@OpenWrt:/# opkg install pgsql-server pgsql-cli<br/>
...
</code></p>
<p>Now configure PGDATA directory in /etc/config/postgresql to be located on your external storage volume. When restarting the postgresql init.d service you should see the new database directory being initialized.<br/>Then install GNUnet itself:</p>
<p><code>
root@OpenWrt:/# opkg install gnunet gnunet-dhtcache-pgsql gnunet-fs-pgsql gnunet-gns-pgsql gnunet-peerstore-flat gnunet-vpn gnunet-transport-tcp gnunet-transport-http_client
</code></p>
<p>Congrats! GNUnet is now installed!</p>
<p>Alternatively you can also use the OpenWrt ImageBuilder to generate ready-made images with those packages pre-installed.</p>
<h2>{{ _("Configuration") }}</h2>
<p>GNUnet's configuration is contained in OpenWrt's UCI by a simple translation
mechanism overlaying options set in UCI on GNUnet's default configuration.<br/>
In this way, only the options changed by the user are persistent in UCI.
Example:</p>
<p><code>
root@OpenWrt:/# uci show gnunet<br/>
gnunet.nse=gnunet-config<br/>
gnunet.nse.WORKDELAY='500 ms'<br/>
gnunet.dhtcache=gnunet-config<br/>
gnunet.dhtcache.DATABASE='postgres'<br/>
gnunet.datastore=gnunet-config<br/>
gnunet.datastore.DATABASE='postgres'<br/>
gnunet.namestore=gnunet-config<br/>
gnunet.namestore.DATABASE='postgres'<br/>
gnunet.namecache=gnunet-config<br/>
gnunet.namecache.DATABASE='postgres'<br/>
gnunet.peerstore=gnunet-config<br/>
gnunet.peerstore.DATABASE='flat'<br/>
gnunet.peerstore_flat=gnunet-config<br/>
gnunet.peerstore_flat.FILENAME='/etc/gnunet/peerstore.flat'<br/>
gnunet.psycstore=gnunet-config<br/>
gnunet.psycstore.DATABASE='postgres'<br/>
<br/>
root@OpenWrt:/# uci set gnunet.peerstore_flat.FILENAME='/mnt/sda1/gnunet/peerstore.flat'<br/>
root@OpenWrt:/# uci commit gnunet<br/>
</code></p>
<h2>{{ _("Use") }}</h2>
<p>OpenWrt's procd runs the gnunet-arm service manager which then runs GNUnet services. We can list them with the -I option:</p>
<p><code>
root@OpenWrt:/etc# gnunet-arm -I<br/>
Services (excluding stopped services):<br/>
(started: 24 / stopped: 14 / finished: 1)<br/>
ats (binary='gnunet-service-ats', status=started)<br/>
cadet (binary='gnunet-service-cadet', status=started)<br/>
core (binary='gnunet-service-core', status=started)<br/>
datastore (binary='gnunet-service-datastore', status=started)<br/>
dht (binary='gnunet-service-dht', status=started)<br/>
fs (binary='gnunet-service-fs', status=started)<br/>
gns (binary='gnunet-service-gns', status=started)<br/>
hostlist (binary='gnunet-daemon-hostlist', status=started)<br/>
namecache (binary='gnunet-service-namecache', status=started)<br/>
namestore (binary='gnunet-service-namestore', status=started)<br/>
nat (binary='gnunet-service-nat', status=started)<br/>
nse (binary='gnunet-service-nse', status=started)<br/>
peerinfo (binary='gnunet-service-peerinfo', status=started)<br/>
peerstore (binary='gnunet-service-peerstore', status=started)<br/>
resolver (binary='gnunet-service-resolver', status=started)<br/>
rest (binary='gnunet-rest-server', status=started)<br/>
revocation (binary='gnunet-service-revocation', status=started)<br/>
rps (binary='gnunet-service-rps', status=started)<br/>
set (binary='gnunet-service-set', status=started)<br/>
statistics (binary='gnunet-service-statistics', status=started)<br/>
topology (binary='gnunet-daemon-topology', status=started)<br/>
transport (binary='gnunet-service-transport', status=started)<br/>
vpn (binary='gnunet-service-vpn', status=started)<br/>
zonemaster (binary='gnunet-service-zonemaster', status=started)<br/>
zonemaster-monitor (binary='gnunet-service-zonemaster-monitor', status=finished)<br/>
</code></p>
<h2>{{ _("Make sure, it works!") }}</h2>
<p>
Please head over here: <a href="https://gnunet.org/en/use.html">Use!</a>
<p>
</article>
{% endblock body_content %}
|
