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Reticulum/docs/source/using.rst
Mark Qvist e51b0077c7 Improved configuration info in docs
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.. _using-main:
******************************
Using Reticulum on Your System
******************************
Reticulum is not installed as a driver or kernel module, as one might expect
of a networking stack. Instead, Reticulum is distributed as a Python module.
This means that no special privileges are required to install or use it. It
is also very light-weight, and easy to transfer to, and install on new systems.
When you have Reticulum installed, any program or application that uses Reticulum
will automatically load and initialise Reticulum when it starts, if it is not
already running.
In many cases, this approach is sufficient. When any program needs to use
Reticulum, it is loaded, initialised, interfaces are brought up, and the
program can now communicate over any Reticulum networks available. If another
program starts up and also wants access to the same Reticulum network, the
instance is simply shared. This works for any number of programs running
concurrently, and is very easy to use, but depending on your use case, there
are other options.
Configuration & Data
--------------------
Reticulum stores all information that it needs to function in a single file-system
directory. When Reticulum is started, it will look for a valid configuration
directory in the following places:
- ``/etc/reticulum``
- ``~/.config/reticulum``
- ``~/.reticulum``
If no existing configuration directory is found, the directory ``~/.reticulum``
is created, and the default configuration will be automatically created here.
You can move it to one of the other locations if you wish.
It is also possible to use completely arbitrary configuration directories by
specifying the relevant command-line parameters when running Reticulum-based
programs. You can also run multiple separate Reticulum instances on the same
physical system, either in isolation from each other, or connected together.
In most cases, a single physical system will only need to run one Reticulum
instance. This can either be launched at boot, as a system service, or simply
be brought up when a program needs it. In either case, any number of programs
running on the same system will automatically share the same Reticulum instance,
if the configuration allows for it, which it does by default.
The entire configuration of Reticulum is found in the ``~/.reticulum/config``
file. When Reticulum is first started on a new system, a basic, but fully functional
configuration file is created. The default configuration looks like this:
.. code::
# This is the default Reticulum config file.
# You should probably edit it to include any additional,
# interfaces and settings you might need.
# Only the most basic options are included in this default
# configuration. To see a more verbose, and much longer,
# configuration example, you can run the command:
# rnsd --exampleconfig
[reticulum]
# If you enable Transport, your system will route traffic
# for other peers, pass announces and serve path requests.
# This should only be done for systems that are suited to
# act as transport nodes, ie. if they are stationary and
# always-on. This directive is optional and can be removed
# for brevity.
enable_transport = False
# By default, the first program to launch the Reticulum
# Network Stack will create a shared instance, that other
# programs can communicate with. Only the shared instance
# opens all the configured interfaces directly, and other
# local programs communicate with the shared instance over
# a local socket. This is completely transparent to the
# user, and should generally be turned on. This directive
# is optional and can be removed for brevity.
share_instance = Yes
# If you want to run multiple *different* shared instances
# on the same system, you will need to specify different
# shared instance ports for each. The defaults are given
# below, and again, these options can be left out if you
# don't need them.
shared_instance_port = 37428
instance_control_port = 37429
# You can configure Reticulum to panic and forcibly close
# if an unrecoverable interface error occurs, such as the
# hardware device for an interface disappearing. This is
# an optional directive, and can be left out for brevity.
# This behaviour is disabled by default.
panic_on_interface_error = No
[logging]
# Valid log levels are 0 through 7:
# 0: Log only critical information
# 1: Log errors and lower log levels
# 2: Log warnings and lower log levels
# 3: Log notices and lower log levels
# 4: Log info and lower (this is the default)
# 5: Verbose logging
# 6: Debug logging
# 7: Extreme logging
loglevel = 4
# The interfaces section defines the physical and virtual
# interfaces Reticulum will use to communicate on. This
# section will contain examples for a variety of interface
# types. You can modify these or use them as a basis for
# your own config, or simply remove the unused ones.
[interfaces]
# This interface enables communication with other
# link-local Reticulum nodes over UDP. It does not
# need any functional IP infrastructure like routers
# or DHCP servers, but will require that at least link-
# local IPv6 is enabled in your operating system, which
# should be enabled by default in almost any OS. See
# the Reticulum Manual for more configuration options.
[[Default Interface]]
type = AutoInterface
interface_enabled = True
If Reticulum infrastructure already exists locally, you probably don't need to
change anything, and you may already be connected to a wider network. If not,
you will probably need to add relevant *interfaces* to the configuration, in
order to communicate with other systems. It is a good idea to read the comments
and explanations in the above default config. It will teach you the basic
concepts you need to understand to configure your network. Once you have done that,
take a look at the :ref:`Interfaces<interfaces-main>` chapter of this manual.
Included Utility Programs
-------------------------
Reticulum includes a range of useful utilities, both for managing your Reticulum
networks, and for carrying out common tasks over Reticulum networks, such as
transferring files to remote systems, and executing commands and programs remotely.
If you often use Reticulum from several different programs, or simply want
Reticulum to stay available all the time, for example if you are hosting
a transport node, you might want to run Reticulum as a separate service that
other programs, applications and services can utilise.
The rnsd Utility
================
It is very easy to run Reticulum as a service. Simply run the included ``rnsd`` command.
When ``rnsd`` is running, it will keep all configured interfaces open, handle transport if
it is enabled, and allow any other programs to immediately utilise the
Reticulum network it is configured for.
You can even run multiple instances of rnsd with different configurations on
the same system.
.. code:: text
# Install Reticulum
pip3 install rns
# Run rnsd
rnsd
.. code:: text
usage: rnsd [-h] [--config CONFIG] [-v] [-q] [--version]
Reticulum Network Stack Daemon
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
-v, --verbose
-q, --quiet
--version show program's version number and exit
You can easily add ``rnsd`` as an always-on service by :ref:`configuring a service<using-systemd>`.
The rnstatus Utility
====================
Using the ``rnstatus`` utility, you can view the status of configured Reticulum
interfaces, similar to the ``ifconfig`` program.
.. code:: text
# Run rnstatus
rnstatus
# Example output
Shared Instance[37428]
Status : Up
Serving : 1 program
Rate : 1.00 Gbps
Traffic : 83.13 KB↑
86.10 KB↓
AutoInterface[Local]
Status : Up
Mode : Full
Rate : 10.00 Mbps
Peers : 1 reachable
Traffic : 63.23 KB↑
80.17 KB↓
TCPInterface[RNS Testnet Frankfurt/frankfurt.rns.unsigned.io:4965]
Status : Up
Mode : Full
Rate : 10.00 Mbps
Traffic : 187.27 KB↑
74.17 KB↓
RNodeInterface[RNode UHF]
Status : Up
Mode : Access Point
Rate : 1.30 kbps
Access : 64-bit IFAC by <…e702c42ba8>
Traffic : 8.49 KB↑
9.23 KB↓
Reticulum Transport Instance <5245a8efe1788c6a1cd36144a270e13b> running
.. code:: text
usage: rnstatus [-h] [--config CONFIG] [--version] [-a] [-v]
Reticulum Network Stack Status
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
--version show program's version number and exit
-a, --all show all interfaces
-v, --verbose
The rnpath Utility
====================
With the ``rnpath`` utility, you can look up and view paths for
destinations on the Reticulum network.
.. code:: text
# Run rnpath
rnpath c89b4da064bf66d280f0e4d8abfd9806
# Example output
Path found, destination <c89b4da064bf66d280f0e4d8abfd9806> is 4 hops away via <f53a1c4278e0726bb73fcc623d6ce763> on TCPInterface[Testnet/frankfurt.connect.reticulu.network:4965]
.. code:: text
usage: rnpath [-h] [--config CONFIG] [--version] [-t] [-r] [-d] [-D] [-w seconds] [-v] [destination]
Reticulum Path Discovery Utility
positional arguments:
destination hexadecimal hash of the destination
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
--version show program's version number and exit
-t, --table show all known paths
-r, --rates show announce rate info
-d, --drop remove the path to a destination
-D, --drop-announces drop all queued announces
-w seconds timeout before giving up
-v, --verbose
The rnprobe Utility
====================
The ``rnprobe`` utility lets you probe a destination for connectivity, similar
to the ``ping`` program. Please note that probes will only be answered if the
specified destination is configured to send proofs for received packets. Many
destinations will not have this option enabled, and will not be probable.
.. code:: text
# Run rnprobe
rnprobe example_utilities.echo.request 2d03725b327348980d570f739a3a5708
# Example output
Sent 16 byte probe to <2d03725b327348980d570f739a3a5708>
Valid reply received from <2d03725b327348980d570f739a3a5708>
Round-trip time is 38.469 milliseconds over 2 hops
.. code:: text
usage: rnprobe [-h] [--config CONFIG] [--version] [-v] [full_name] [destination_hash]
Reticulum Probe Utility
positional arguments:
full_name full destination name in dotted notation
destination_hash hexadecimal hash of the destination
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to alternative Reticulum config directory
--version show program's version number and exit
-v, --verbose
The rncp Utility
================
The ``rncp`` utility is a simple file transfer tool. Using it, you can transfer
files through Reticulum.
.. code:: text
# Run rncp on the receiving system, specifying which identities
# are allowed to send files
rncp --receive -a 1726dbad538775b5bf9b0ea25a4079c8 -a c50cc4e4f7838b6c31f60ab9032cbc62
# From another system, copy a file to the receiving system
rncp ~/path/to/file.tgz 73cbd378bb0286ed11a707c13447bb1e
You can specify as many allowed senders as needed, or complete disable authentication.
.. code:: text
usage: rncp [-h] [--config path] [-v] [-q] [-p] [-r] [-b] [-a allowed_hash] [-n] [-w seconds] [--version] [file] [destination]
Reticulum File Transfer Utility
positional arguments:
file file to be transferred
destination hexadecimal hash of the receiver
optional arguments:
-h, --help show this help message and exit
--config path path to alternative Reticulum config directory
-v, --verbose increase verbosity
-q, --quiet decrease verbosity
-p, --print-identity print identity and destination info and exit
-r, --receive wait for incoming files
-b, --no-announce don't announce at program start
-a allowed_hash accept from this identity
-n, --no-auth accept files from anyone
-w seconds sender timeout before giving up
--version show program's version number and exit
-v, --verbose
The rnx Utility
================
The ``rnx`` utility is a basic remote command execution program. It allows you to
execute commands on remote systems over Reticulum, and to view returned command
output.
.. code:: text
# Run rnx on the listening system, specifying which identities
# are allowed to execute commands
rncp --listen -a 941bed5e228775e5a8079fc38b1ccf3f -a 1b03013c25f1c2ca068a4f080b844a10
# From another system, run a command
rnx 7a55144adf826958a9529a3bcf08b149 "cat /proc/cpuinfo"
# Or enter the interactive mode pseudo-shell
rnx 7a55144adf826958a9529a3bcf08b149 -x
# The default identity file is stored in
# ~/.reticulum/identities/rnx, but you can use
# another one, which will be created if it does
# not already exist
rnx 7a55144adf826958a9529a3bcf08b149 -i /path/to/identity -x
You can specify as many allowed senders as needed, or completely disable authentication.
.. code:: text
usage: rnx [-h] [--config path] [-v] [-q] [-p] [-l] [-i identity] [-x] [-b] [-a allowed_hash] [-n] [-N] [-d] [-m] [-w seconds] [-W seconds] [--stdin STDIN] [--stdout STDOUT] [--stderr STDERR] [--version]
[destination] [command]
Reticulum Remote Execution Utility
positional arguments:
destination hexadecimal hash of the listener
command command to be execute
optional arguments:
-h, --help show this help message and exit
--config path path to alternative Reticulum config directory
-v, --verbose increase verbosity
-q, --quiet decrease verbosity
-p, --print-identity print identity and destination info and exit
-l, --listen listen for incoming commands
-i identity path to identity to use
-x, --interactive enter interactive mode
-b, --no-announce don't announce at program start
-a allowed_hash accept from this identity
-n, --noauth accept files from anyone
-N, --noid don't identify to listener
-d, --detailed show detailed result output
-m mirror exit code of remote command
-w seconds connect and request timeout before giving up
-W seconds max result download time
--stdin STDIN pass input to stdin
--stdout STDOUT max size in bytes of returned stdout
--stderr STDERR max size in bytes of returned stderr
--version show program's version number and exit
Improving System Configuration
------------------------------
If you are setting up a system for permanent use with Reticulum, there is a
few system configuration changes that can make this easier to administrate.
These changes will be detailed here.
Fixed Serial Port Names
=======================
On a Reticulum instance with several serial port based interfaces, it can be
beneficial to use the fixed device names for the serial ports, instead
of the dynamically allocated shorthands such as ``/dev/ttyUSB0``. Under most
Debian-based distributions, including Ubuntu and Raspberry Pi OS, these nodes
can be found under ``/dev/serial/by-id``.
You can use such a device path directly in place of the numbered shorthands.
Here is an example of a packet radio TNC configured as such:
.. code:: text
[[Packet Radio KISS Interface]]
type = KISSInterface
interface_enabled = True
outgoing = true
port = /dev/serial/by-id/usb-FTDI_FT230X_Basic_UART_43891CKM-if00-port0
speed = 115200
databits = 8
parity = none
stopbits = 1
preamble = 150
txtail = 10
persistence = 200
slottime = 20
Using this methodology avoids potential naming mix-ups where physical devices
might be plugged and unplugged in different orders, or when device name
assignment varies from one boot to another.
.. _using-systemd:
Reticulum as a System Service
=============================
Instead of starting Reticulum manually, you can install ``rnsd`` as a system
service and have it start automatically at boot.
If you installed Reticulum with ``pip``, the ``rnsd`` program will most likely
be located in a user-local installation path only, which means ``systemd`` will not
be able to execute it. In this case, you can simply symlink the ``rnsd`` program
into a directory that is in systemd's path:
.. code:: text
sudo ln -s $(which rnsd) /usr/local/bin/
You can then create the service file ``/etc/systemd/system/rnsd.service`` with the
following content:
.. code:: text
[Unit]
Description=Reticulum Network Stack Daemon
After=multi-user.target
[Service]
# If you run Reticulum on WiFi devices,
# or other devices that need some extra
# time to initialise, you might want to
# add a short delay before Reticulum is
# started by systemd:
# ExecStartPre=/bin/sleep 10
Type=simple
Restart=always
RestartSec=3
User=USERNAMEHERE
ExecStart=rnsd --service
[Install]
WantedBy=multi-user.target
Be sure to replace ``USERNAMEHERE`` with the user you want to run ``rnsd`` as.
To manually start ``rnsd`` run:
.. code:: text
sudo systemctl start rnsd
If you want to automatically start ``rnsd`` at boot, run:
.. code:: text
sudo systemctl enable rnsd
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