[bug]: LND not listening on port 8080

[xmready]

Background

I installed LND with my full node, but it's not listening on port 8080 with the rest API. I haven't created any channels yet, but I wanted to get RTL running first, which requires the rest API on that port. I created a wallet fine and can use lncli fine.

Your environment

• lnd version 0.15.4-beta commit=v0.15.4-beta
• Linux 5.15.64-1-pve #1 SMP PVE 5.15.64-1 (Thu, 13 Oct 2022 10:30:34 +0200) x86_64 x86_64 x86_64 GNU/Linux
• Bitcoin Core version v23.0.0

[Application Options]
alias=MyNode1
debuglevel=info
maxpendingchannels=5
listen=localhost
norest=false
restlisten=localhost:8080

# Password
wallet-unlock-password-file=/data/lnd/password.txt
wallet-unlock-allow-create=true

# Channel settings
bitcoin.basefee=1000
bitcoin.feerate=1
minchansize=100000
accept-keysend=true
accept-amp=true
protocol.wumbo-channels=true
protocol.no-anchors=false
coop-close-target-confs=24

# Watchtower
wtclient.active=true

# Performance
gc-canceled-invoices-on-startup=true
gc-canceled-invoices-on-the-fly=true
ignore-historical-gossip-filters=1
stagger-initial-reconnect=true
routing.strictgraphpruning=true

[Unit]
Description=LND Lightning Network Daemon
Wants=bitcoind.service
After=bitcoind.service

[Service]

# Service execution
###################
ExecStart=/usr/local/bin/lnd
ExecStop=/usr/local/bin/lncli stop

# Process management
####################
Type=simple
Restart=always
RestartSec=30
TimeoutSec=240
LimitNOFILE=128000

# Directory creation and permissions
####################################
User=lnd

# /run/lightningd
RuntimeDirectory=lightningd
RuntimeDirectoryMode=0710

# Hardening measures
####################
# Provide a private /tmp and /var/tmp.
PrivateTmp=true

# Mount /usr, /boot/ and /etc read-only for the process.
ProtectSystem=full

# Disallow the process and all of its children to gain
# new privileges through execve().
NoNewPrivileges=true

# Use a new /dev namespace only populated with API pseudo devices
# such as /dev/null, /dev/zero and /dev/random.
PrivateDevices=true

# Deny the creation of writable and executable memory mappings.
MemoryDenyWriteExecute=true

[Install]
WantedBy=multi-user.target

# lsof -i | grep lnd | grep -i listen
lnd  9974  lnd  8u   IPv4  39509023  0t0  TCP localhost:10009 (LISTEN)
lnd  9974  lnd  9u   IPv4  39509025  0t0  TCP  localhost:http-alt (LISTEN)
lnd  9974  lnd  46u  IPv4  39509092  0t0  TCP  localhost:9735 (LISTEN)

$ node rtl
[11/7/2022, 3:34:35 PM] INFO: RTL => Server is up and running, please open the UI at http://localhost:3000 or your proxy configured url.

[11/7/2022, 3:35:05 PM] ERROR: Common => Error in Channel Backup for xxxxx: connect ECONNREFUSED ::1:8080

[11/7/2022, 3:35:05 PM] ERROR: GetInfo => Get Info Error: {"name":"RequestError","message":"Error: connect ECONNREFUSED ::1:8080","cause":{"errno":-111,"code":"ECONNREFUSED","syscall":"connect","address":"::1","port":8080},"error":{"errno":-111,"code":"ECONNREFUSED","syscall":"connect","address":"::1","port":8080},"options":{"url":"https://localhost:8080/v1/getinfo","rejectUnauthorized":false,"json":true,"headers":{},"method":"GET","qs":{},"simple":true,"resolveWithFullResponse":false,"transform2xxOnly":false}}

Expected behaviour

I should see port 8080 and RTL should establish a connection with it.

[saubyk]

Hi @xmready try changing your restlisten setting to 127.0.0.1:8080 and restart LND

[xmready]

Hi @xmready try changing your restlisten setting to 127.0.0.1:8080 and restart LND

I just tried your suggestion, restarted lnd.service, and got the exact same results as in the OP. No dice.

[xmready]

Wait a minute, I just realized that the below line is actually referring to port 8080

lnd     2026  lnd    9u  IPv4 47396314      0t0  TCP localhost:http-alt (LISTEN)

So it appears LND is listening on port 8080 after all. The plot thickens as to why I cannot get RTL to communicate and why it's throwing errors about port 8080

[xmready]

I figured it out. I had to change localhostto 127.0.0.1 in the RTL config file. Nothing is wrong with LND and in fact I don't need the following lines in my config at all. This is an issue with RTL

norest=false
restlisten=127.0.0.1:8080