Re: >> OpenSUSE 15.3 walkthrough: bitcoind + electrs + c-lightning + RTL <<

C-Lightning
[1] Install dependencies

Code:

sudo zypper install sqlite3-devel gmp-devel zlib-devel

[2] Create another Tor hidden service for C-Lightning. Similar procedure as before.

Code:

sudo nano /etc/tor/torrc

[3] Below the other hidden service, add this info for Lightning.

Code:

HiddenServiceDir /var/lib/tor/lightningd_hidden_service/
HiddenServiceVersion 3
HiddenServicePort 9735 127.0.0.1:9735

[4] Then restart Tor and retrieve the new v3 Tor hostname for your Lightning installation. Copy it somewhere so you have it handy in step 7.

Code:

sudo systemctl restart tor
sudo cat /var/lib/tor/lightningd_hidden_service/hostname

[5] Log into bitcoin user and download + build Lightning. v0.10.1 needs to be set to the latest version.

Code:

su - bitcoin
git clone https://github.com/ElementsProject/lightning.git
cd lightning
git checkout v0.10.1
./configure
make -j $(nproc)

[6] Create Lightning config.

Code:

mkdir -p /home/bitcoin/.lightning/bitcoin
nano /home/bitcoin/.lightning/bitcoin/lightningd.conf

[7] Enter the following. Alias can be chosen at will!

Replace onion_address_you_got with the hidden service hostname you got in step 4!

Code:

daemon
alias=alias_for_your_node
network=bitcoin
log-level=debug
log-file=/home/bitcoin/.lightning/debug.log
bind-addr=127.0.0.1:9735
announce-addr=onion_address_you_got.onion

[8] Log back out of the unprivileged bitcoin account to install Lightning and create the service.

Code:

exit
cd /home/bitcoin/lightning
sudo make install

sudo nano /usr/lib/systemd/system/lightningd.service

[9] In the service file, we need the following contents.

Code:

[Unit]
Description=C-Lightning daemon
Requires=bitcoind.service
After=bitcoind.service
Wants=network-online.target
After=network-online.target

[Service]
ExecStart=/usr/local/bin/lightningd --daemon --conf /home/bitcoin/.lightning/bitcoin/lightningd.conf

User=bitcoin
Group=users
Type=forking
Restart=on-failure

# 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

[10] Start the Lightning service

Code:

sudo systemctl enable lightningd.service
sudo service lightningd start

[11] To check if it's running, we can use the lightning-cli command as bitcoin user with any of its parameters.

Code:

su - bitcoin
lightning-cli getinfo