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This page contains instructions to natively install xud and its minimal dependencies lnd (BTC) & connext (ETH & ERC20) on linux. It is mainly geared towards developers and administrators which prefer a native installation over docker. For all other users, we recommend our streamlined setup via xud-docker.

Requirements

Make sure to have the following installed:

XUD

Option 1: Installing latest release via npm

This is the easiest and fastest way to install xud on a amd64 machine:

sudo npm install xud -g --unsafe-perm

Option 2: Cloning from GitHub

Testers and developers are encouraged to clone the repository from GitHub and install from source:

git clone https://github.com/ExchangeUnion/xud
cd xud
npm install
npm run compile
npm run compile:seedutil

If you are on an architecture that is not amd64, you'll have to remove grpc-tools and potentially others from the devDependencies section of package.json.

Daemonize xud

If you want to daemonize xud, so that it starts on boot without needing its own terminal, you can do this using systemd:

[Unit]
Description=XUD

[Service]
User=xud
Group=xud
Type=simple
Environment=NODE_ENV=production
ExecStart=/home/xud/xud/bin/xud --mainnet
KillMode=process
KillSignal=SIGINT

LND (BTC)

Follow the lnd installation guide.

Daemonize lnd

If you want to daemonize lnd, so that it starts on boot without needing its own terminal, you can do this using systemd:

[Unit]
Description=LND

[Service]
User=xud
Group=xud
Type=simple
ExecStart=/home/xud/lnd/bin/lnd --bitcoin.mainnet
KillMode=process
KillSignal=SIGINT

Connext

Follow the docs, you want the node: vector node + database stack.

Daemonize connext

If you want to daemonize connext, so that it starts on boot without needing its own terminal, you can do this using systemd:

[Unit]
Description=Connext

[Service]
User=xud
Group=xud
Type=simple
Environment="NODE_ENV=production"
Environment="CONNEXT_NODE_URL=https://connext.boltz.exchange"
Environment="CONNEXT_ETH_PROVIDER_URL=http://eth.kilrau.com:41007"
Environment="LEGACY_MODE=true"
WorkingDirectory=/home/xud/connext/
ExecStart=node /home/xud/connext/build/src/index.js
KillMode=process
KillSignal=SIGINT

Tor

You can install tor via sudo apt install tor on most linux distros nowadays, just make sure the version is fairly recent. If not, consult the tor installation guides. Run systemctl status tor or ps aux | grep tor to verify the tor process is running.

Putting it all together

Create the following xud.conf in /home/xud/.xud:

mainnet = true

[p2p]
tor = true
torport = 9050

[connext]
disable = false
host = "localhost"
port = 5000
webhookhost = "localhost"
webhookport = 8887

[lnd.BTC]
disable = false
host = "localhost"
certpath = "/home/xud/.lnd/tls.cert"
macaroonpath = "/home/xud/.lnd/admin.macaroon"

[lnd.LTC]
disable = true

For convenience, consider adding alias xucli='/home/xud/xud/bin/xucli -p 8886' to the xud user's .bashrc and source it. Then restart xud once (e.g. with systemctl restart xud) and try running xucli getinfo, which should return with an overview of xud's, as well as lnd's and connext status.

Ping us in the help channel of our Discord server for support.

Tips 'n Tricks

  • When installing on a Raspberry Pi you might see Unexpected error during initialization. Here the solution.
  • If you see an install error when installing via npm install, try npm install --production & npm install typescript.