LNDg

Lite GUI web interface to analyze lnd data and manage your node with automation.

Start by choosing one of the following installation methods: Docker Installation | Manual Installation

LNDg can also be found directly on popular apps like Umbrel and Citadel with a 1-click install from the GUI.

Docker Installation (requires docker and docker-compose be installed)

Build and deploy

1. Clone respository git clone https://github.com/cryptosharks131/lndg.git
2. Change directory into the repo cd lndg
3. Copy and replace the contents (adjust custom volume paths to LND and LNDg folders) of the docker-compose.yaml with the below: nano docker-compose.yaml

services:
  lndg:
    build: .
    volumes:
      - /home/<user>/.lnd:/root/.lnd:ro
      - /home/<user>/<path-to>/lndg/data:/lndg/data:rw
    command:
      - sh
      - -c
      - python initialize.py -net 'mainnet' -server '127.0.0.1:10009' -d && supervisord && python manage.py runserver 0.0.0.0:8889
    network_mode: "host"

4. Deploy your docker image: docker-compose up -d
5. LNDg should now be available on port http://localhost:8889
6. Open and copy the password from output file: nano data/lndg-admin.txt
7. Use the password from the output file and the username lndg-admin to login

Updating

docker-compose down
docker-compose build --no-cache
docker-compose up -d

# OPTIONAL: remove unused builds and objects
docker system prune -f

Manual Installation

Step 1 - Install lndg

1. Clone respository git clone https://github.com/cryptosharks131/lndg.git
2. Change directory into the repo cd lndg
3. Make sure you have python virtualenv installed sudo apt install virtualenv
4. Setup a python3 virtual environment virtualenv -p python3 .venv
5. Install required dependencies .venv/bin/pip install -r requirements.txt
6. Initialize some settings for your django site (see notes below) .venv/bin/python initialize.py
7. The initial login user is lndg-admin and the password is output here: data/lndg-admin.txt
8. Generate some initial data for your dashboard .venv/bin/python jobs.py
9. Run the server via a python development server .venv/bin/python manage.py runserver 0.0.0.0:8889
   Tip: If you plan to only use the development server, you will need to setup whitenoise (see note below).

Step 2 - Setup Backend Data, Automated Rebalancing and HTLC Stream Data

The files jobs.py, rebalancer.py and htlc_stream.py inside lndg/gui/ serve to update the backend database with the most up to date information, rebalance any channels based on your lndg dashboard settings and to listen for any failure events in your htlc stream. A refresh interval of at least 10-20 seconds is recommended for the jobs.py and rebalancer.py files for the best user experience.

Recommend Setup With Supervisord (least setup) or Systemd (most compatible)

1. Supervisord
   a) Setup supervisord config .venv/bin/python initialize.py -sd
   b) Install Supervisord .venv/bin/pip install supervisor
   c) Start Supervisord supervisord

2. Systemd (2 options)
   Option 1 - Bash script install (requires install at ~/lndg) sudo bash systemd.sh
   Option 2 - Manual Setup Instructions

Alternatively, you may also make your own task for these files with your preferred tool (task scheduler/cronjob/etc).

Updating

1. Make sure you are in the lndg folder cd lndg
2. Pull the new files git pull
3. Migrate any database changes .venv/bin/python manage.py migrate

Notes

1. If you are not using the default settings for LND or you would like to run a LND instance on a network other than mainnet you can use the correct flags in step 6 (see initialize.py --help) or you can edit the variables directly in lndg/lndg/settings.py.
2. Some systems have a hard time serving static files (docker/macOs) and installing whitenoise and configuring it can help solve this issue. You can use the following to install and setup whitenoise:
   .venv/bin/pip install whitenoise && rm lndg/settings.py && .venv/bin/python initialize.py -wn
3. If you want to recreate a settings file, delete it from lndg/lndg/settings.py and rerun. initialize.py
4. If you plan to run this site continuously, consider setting up a proper web server to host it (see Nginx below).
5. You can manage your login credentials from the admin page. Example: lndg.local/lndg-admin
6. If you have issues reaching the site, verify the firewall is open on port 8889 where LNDg is running

Setup lndg initialize.py options

1. -ip or --nodeip - Accepts only this host IP to serve the LNDg page - default: *
2. -dir or --lnddir - LND Directory for tls cert and admin macaroon paths - default: ~/.lnd
3. -net or --network - Network LND will run over - default: mainnet
4. -server or --rpcserver - Server address to use for rpc communications with LND - default: localhost:10009
5. -sd or --supervisord - Setup supervisord to run jobs/rebalancer background processes - default: False
6. -sdu or --sduser - Configure supervisord with a non-root user - default: root
7. -wn or --whitenoise - Add whitenoise middleware (docker requirement for static files) - default: False
8. -d or --docker - Single option for docker container setup (supervisord + whitenoise) - default: False
9. -dx or --debug - Setup the django site in debug mode - default: False
10. -pw or --adminpw Setup a custom admin password - default: Randomized

Using A Webserver

You can serve the dashboard at all times using a webserver instead of the development server. Using a webserver will serve your static files and installing whitenoise is not required when running in this manner. Any webserver can be used to host the site if configured properly. A bash script has been included to help aide in the setup of a nginx webserver.
sudo bash nginx.sh

When updating, follow the same steps as above. You will also need to restart the uwsgi service for changes to take affect on the UI.
sudo systemctl restart uwsgi.service

Key Features

Batch Opens

You can use LNDg to batch open up to 10 channels at a time with a single transaction. This can help to signicantly reduce the channel open fees incurred when opening multiple channels.

Watch Tower Management

You can use LNDg to add, monitor or remove watch towers from the lnd node.

Suggests Fee Rates

LNDg will make suggestions on an adjustment to the current set outbound fee rate for each channel. This uses historical payment and forwarding data over the last 7 days to drive suggestions. You can use the Auto-Fees feature in order to automatically act upon the suggestions given.

You may see another adjustment right after setting the new suggested fee rate on some channels. This is normal and you should wait ~24 hours before changing the fee rate again on any given channel.

Suggests New Peers

LNDg will make suggestions for new peers to open channels to based on your node's successful routing history.

There are two unique values in LNDg:

1. Volume Score - A score based upon both the count of transactions and the volume of transactions routed through the peer
2. Savings By Volume (ppm) - The amount of sats you could have saved during rebalances if you were peered directly with this node over the total amount routed through the peer

Channel Performance Metrics

LNDg will aggregate your payment and forwarding data to provide the following metrics:

1. Outbound Flow Details - This shows the amount routed outbound next to the amount rebalanced in
2. Revenue Details - This shows the revenue earned on the left, the profit (revenue - cost) in the middle and the assisted revenue (amount earned due to this channel's inbound flow) on the right
3. Inbound Flow Details - This shows the amount routed inbound next to the amount rebalanced out
4. Updates - This is the number of updates the channel has had and is directly correlated to the space it takes up in channel.db

Password Protected Login

The initial login username is lndg-admin but can be easily modified by going to the page found here: /lndg-admin

Suggests AR Actions

LNDg will make suggestions for actions to take around Auto-Rebalancing.

AR-Autopilot Setting

LNDg will automatically act upon the suggestions it makes on the Suggests AR Actions page.

HTLC Failure Stream

LNDg will listen for failure events in your htlc stream and record them to the dashboard when they occur.

API Backend

The following data can be accessed at the /api endpoint:
payments paymenthops invoices forwards onchain peers channels rebalancer settings pendinghtlcs failedhtlcs

Peer Reconnection

LNDg will automatically try to resolve any channels that are seen as inactive, no more than every 3 minutes per peer.

Auto-Fees

Here are some additional notes to help you get started using Auto-Fees (AF).

LNDg can update your fees on a channel every 24 hours if there is a suggestion listed on the fee rates page. You must make sure the AF-Enabled setting is set to 1 and that individual channels you want to be managed are also set to enabled. You can view a log of AF changes by opening the Autofees tab.

You can customize some settings of AF by updating the following settings:
AF-FailedHTLCs - The minimum daily failed HTLCs count in which we could trigger a fee increase (depending on flow)
AF-Increment - The increment size of our potential fee changes, all fee suggestions will be a multiple of this value
AF-MaxRate - The maximum fee rate in which we can adjust to
AF-MinRate - The minimum fee rate in which we can adjust to
AF-Multiplier - Multiplier used against the flow pattern algorithm, the larger the multiplier, the larger the potential moves

AF Notes:

1. AF changes only trigger after 24 hours of no fee updates via LNDg
2. Single step maximum increase set to 15% or 25 ppm (which ever is increase smaller)
3. Single step maximum decrease set to 25% or 50 ppm (which ever is decrease smaller)
4. Channels with less than 25% outbound liquidty will not have their fees decreased
5. Channels with less than 25% inbound liquidty will not have their fees increased

Auto-Rebalancer - Quick Start Guide

Here are some additional notes to help you better understand the Auto-Rebalancer (AR).

The objective of the Auto-Rebalancer is to "refill" the liquidity on the local side (i.e. OUTBOUND) of profitable and lucarative channels. So that, when a forward comes in from another node there is always enough liquidity to route the payment and in return collect the desired routing fees.

1. The AR variable AR-Enabled must be set to 1 (enabled) in order to start looking for new rebalance opportunities.
2. The AR variable AR-Target% defines the % size of the channel capacity you would like to use for rebalance attempts. Example: If a channel size is 1M Sats and AR-Target% = 0.05 LNDg will select an amount of 5% of 1M = 50K for rebalancing.
3. The AR variable AR-Time defines the maximum amount of time we will spend looking for a route. Example: 5 minutes
4. The AR variable AR-MaxFeeRate defines the maximum amount in ppm a rebalance attempt can ever use for a fee limit. This is the maximum limit to ensure the total fee does not exceed this amount. Example: AR-MaxFeeRate = 800 will ensure the rebalance fee is always less than 800 ppm.
5. The AR variable AR-MaxCost% defines the maximum % of the ppm being charged on the INBOUND receving channel that will be used as the fee limit for the rebalance attempt. Example: If your fee to node A is 1000ppm and AR-MaxCost% = 0.5 LNDg will use 50% of 1000ppm = 500ppm max fee limit for rebalancing.
6. The AR variable AR-Outbound% helps identify all the channels that would be a candidate for rebalancing targetd channels. Rebalances will only consider any OUTBOUND channel that has more outbound liquidity than the current AR-Outbound% setting AND the channel is not currently being targeted as an INBOUND receving channel for rebalances. Example: AR-Outboud% = 0.6 would make all channels with an outbound capacity of 60% or more AND not enabled under AR on the channel line to be a candidate for rebalancing.
7. Channels need to be targeted in order to be refilled with outbound liquidity and in order to control costs as a first prioirty, all calculations are based on the specific INBOUND receving channel.
8. Enable INBOUND receving channels you would like to target and set an inbound liquidity Target% on the specific channel. Rebalance attempts will be made until inbound liquidity falls below this channel settting.
9. The INBOUND receving channel is the channel that later routes out real payments and earns back the fees paid. Target channels that have lucrative outbound flows.
10. Attempts that are successful or attempts with only incorrect payment information are tried again immediately. Example: If a rebalancing for 50k was sucessful, AR will try another 50k immediately with the same parameters.
11. Attempts that fail for other reasons will not be tried again for 30 minutes after the stop time. This allows the liquidity in the network to move around for 30 mins before trying another rebalancing attempt that previously failed. The 30 minute window can be customized by updating the AR-WaitPeriod setting.

Additional customization options:

1. AR-Autopilot - Automatically act upon suggestions on the AR Actions page
2. AR-WaitPeriod - How long AR should wait before scheduling a channel that has recently failed an attempt
3. AR-Variance - How much to randomly vary the target rebalance amount by this % of the target amount

Steps to start the Auto-Rebalancer:

1. Update Channel Specific Settings
   a. Go to Active Channels section
   b. Find the channels you would like to activate for rebalancing (this refills its outbound)
   c. On far right column Click the Enable button to activate rebalancing
   d. The dashboard will refresh and show AR-Target 100%
   e. Adjust the AR-Target to desired % of liquidity you want to keep on remote INBOUND side. Example select 0.60 if you want 60% of the channel capacity on Remote/INBOUND side which would mean that there is 40% on Local/OUTBOUND side
   f. Hit Enter
   g. Dashboard will refresh in the browser
   h. Make sure you enable all channels that are valuable outbound routes for you to ensure they are not used for filling up routes you have targeted (you can enable and target 100% in order to avoid any action on this channel from the rebalancer)

2. Update Global Settings
   a. Go to section Update Auto Rebalancer Settings
   b. Select the global settings (sample below):
   c. Click OK button to submit
   d. Once enabled is set to 1 in the global settings - the rebalancer will become active

Enabled: 1
Target Amount (%): 0.03
Target Time (min): 3
Target Outbound Above (%): 0.4
Global Max Fee Rate (ppm): 500
Max Cost (%): 0.6

3. Go to section Last 10 Rebalance Requests - that will show the list of the rebalancing queue and status.

If you want a channel not to be picked for rebalancing (i.e. it is already full with OUTBOUND capacity that you desire), enable the channel and set the AR-Target% to 100. The rebalancer will ignore the channel while selecting the channels for outbound candidates and since its INBOUND can never be above 100% it will never trigger a rebalance.

Preview Screens

Main Dashboard

Channel Performance, Peers, Balances, Routes, Keysends and Pending HTLCs All Open In Separate Screens

Manage Auto-Fees Or Get Suggestions

Batch Open Channels

Suggests Peers To Open With and Rebalancer Actions To Take

Browsable API at /api (json format available with url appended with ?format=json)

View Keysend Messages (you can only receive these if you have accept-keysend=true in lnd.conf)