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LND_VERSION_DIR_AARCH64=lnd-linux-arm64-v0.17.2-beta
LND_URL_AARCH64=https://github.com/lightningnetwork/lnd/releases/download/v0.17.2-beta/lnd-linux-arm64-v0.17.2-beta.tar.gz
LND_SHA256_AARCH64=95a5a46441c3300821eccd1771085cdd34bf615d069f4d9e654f828e874abe27
# binaries and config root; data is elsewhere, in /ssd/lnd as per lnd conf.
LND_HOME=/home/lnd
# no root slash since it's combined with other path prefixes.
LND_SVDIR=etc/sv/lnd
lnd_bin_install() {
cd $LND_HOME
local lnd_targz=$LND_VERSION_DIR_AARCH64.tar.gz
test -f $LND_VERSION_DIR_AARCH64/lnd && return 0;
curl -sSL -o $lnd_targz "$LND_URL_AARCH64"
if [ $? -ne 0 ]; then
printf "ERROR: unable to download $LND_URL_AARCH64\n" 1>&2
return 1
fi
printf "$LND_SHA256_AARCH64 $lnd_targz" | sha256sum --check
[ $? -ne 0 ] && return 1
tar -C $LND_HOME --no-same-owner -xf $lnd_targz
rm -f $lnd_targz
return $?
}
lnd_svc_install() {
# service directories
mkdir -p /$LND_SVDIR
mkdir -p /$LND_SVDIR/log
# logging facility
if [ ! -f /$LND_SVDIR/log/run ]; then
cp $SYSUPDATES_ROOTDIR/files/$LND_SVDIR/log/run /$LND_SVDIR/log/
chmod +x /$LND_SVDIR/log/run
fi
# the actual lnd service
cat <<EOF > /$LND_SVDIR/run.new
#!/bin/sh
[ -r conf ] && . ./conf
exec 2>&1
# wait for OS to acquire a clock sync.
# random date in the past: Oct 22 06:40:00 PM UTC 2023
while [ "\$(date +%s)" -lt 1698000000 ]
do
echo "service start suspended until clock sync"
sleep 5
done
exec chpst -u lnd $LND_HOME/$LND_VERSION_DIR_AARCH64/lnd -C /home/lnd/lnd.mainnet.conf 2>&1
EOF
chmod +x /$LND_SVDIR/run.new
test -f /$LND_SVDIR/run && diff /$LND_SVDIR/run /$LND_SVDIR/run.new
if [ $? -ne 0 ]; then
sv -w 600 stop lnd || printf "ERROR: sv stop lnd failed\n" 1>&2
mv /$LND_SVDIR/run.new /$LND_SVDIR/run
sv start lnd || printf "ERROR: sv start lnd failed\n" 1>&2
fi
rm -f /$LND_SVDIR/run.new
# whatever happened above, try to ensure the service is up
chmod +x /$LND_SVDIR/run
[ ! -f /$LND_SVDIR/down ] && sv start lnd
}
lnd_cli_install() {
mkdir -p /opt/bin
cat <<EOF > /opt/bin/lncli.sh
#!/bin/sh
set -e
cli=$LND_HOME/$LND_VERSION_DIR_AARCH64/lncli
exec doas -u lnd \$cli --macaroonpath /ssd/lnd/data/chain/bitcoin/mainnet/admin.macaroon "\$@"
EOF
chmod +x /opt/bin/lncli.sh
}
lnd_apply() {
lnd_bin_install || return 1
lnd_svc_install || return 1
lnd_cli_install || return 1
}