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INSTALL.md

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Table of Contents

  1. Setup
    1. Requirements
    2. Lnd
    3. Lndmon
    4. Nginx (optional: requires domain name)
  2. Usage
    1. Option 1: Nginx Proxy Usage
    2. Option 2: Local Usage
    3. Connecting to Remote Lnd Node
    4. Customizing Grafana Metrics

Setup

Requirements

  • docker >= 18.09.6
  • docker-compose >= 1.24

Lnd

  • Build lnd with the build tag monitoring.

    • Utilizing the monitoring build tag requires building lnd from source. To build lnd from source, follow the instructions here except instead of running make && make install, run make && make install tags=monitoring.

  • In lndmon/.env, fill in the TLS_CERT_PATH and MACAROON_PATH variables. By default, .lnd lives in your home directory.

  • If you wish to run lndmon connecting to an lnd node on testnet or simnet:

    • modify the lndmon/.env LND_NETWORK variable to match your desired network.
    • make sure the MACAROON_PATH matches the desired network as well.

  • Make sure lnd ports are reachable.

  • Start lnd with the flags: --rpclisten=0.0.0.0 --prometheus.enable --prometheus.listen=0.0.0.0:8989 --tlsextraip=172.17.0.1.

    • You may need to delete the existing tls.cert and tls.key in your lnd directory first.
    • If your docker interface has a non-default IP, replace 172.17.0.1 with the docker interface's IP.

  • Start lnd before lndmon.

Lndmon

If you want to just run lndmon and view your monitoring dashboard locally, all that is needed for setup is to clone the repository and install docker + docker-compose.

Nginx (optional: requires domain name)

If you want to enable the built-in nginx proxy feature in order to access your Prometheus and Grafana dashboards remotely, these are the steps:

  1. In the lndmon repository, edit the .env file and fill in the email, FQDN, and (optionally) timezone fields.
  2. Ensure ports 80 and 443 are exposed on your server.
  3. (Optional) Basic auth setup for your Prometheus dashboard:
    • Install apache2-utils package.
    • Run htpasswd -c nginx/etc/.htpasswd <YOUR_USERNAME> and follow the prompts to enter and confirm your desired password.
    • In lndmon/nginx/etc/service.conf, uncomment the lines indicated in the file to enable basic auth.

Note that these steps will result in TLS certs being generated for your domain, so your dashboards will be accessible over HTTPS. The certs will automatically renew when they expire.

How to use your own TLS certs:

  • Uncomment the lines beginning with SSL_ in lndmon/.env and fill in the paths to your cert files.
  • Uncomment the lines beginning with - SSL_ in lndmon/docker-compose.nginx.yml.

Usage

Option 1: Nginx Proxy Usage

These instructions assume you've gone through the setup process for nginx specified above.

  1. docker-compose -f docker-compose.yml -f docker-compose.nginx.yml up

    This will result in the automatic generation of TLS certificates through Let's Encrypt if they haven't been generated already, or their renewal if the current certs have expired.

  2. Grafana is located at https://<YOUR_DOMAIN>/grafana/

  3. Prometheus's expression browser is located at https://<YOUR_DOMAIN>/prometheus/graph.

Option 2: Local Usage

  1. docker-compose up from the lndmon repository.

    • If you get the error "transport: Error while dialing dial tcp 172.17.0.1:10009: i/o timeout", your docker interface may not have the default IP. Make sure your docker interface's IP matches the IP for LND_HOST in .env and the lnd target's IP in prometheus.yml.

  2. Access Grafana dashboard:

    Get Grafana's IP:

    docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' lndmon_grafana_1

Grafana's dashboard is located at http://<GRAFANA_IP>:3000/. The default password for the admin user is also admin (you can change it after the first login). 3. Access Prometheus expression browser:

Get Prometheus's IP:

docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' lndmon_prometheus_1

Prometheus's expression browser is located at http://<PROMETHEUS_IP>:9090/graph.

Connecting to Remote Lnd Node

  • Edit the lndmon/.env LND_HOST variable to match your lnd node's IP and port.
  • Ensure the other lnd variables are also up-to-date in lndmon/.env.
  • Edit prometheus.yml lnd targets section to match your IP.
  • Run lnd with the --tlsextraip=<IP> flag.

Customizing Grafana Metrics

lndmon's Grafana instance comes with a set of basic dashboards. Add additional dashboards by clicking the `+' sign on the left.