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Create ltc_prune_node.sh
How to run LTC Node [By codono]
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‎node-setup/ltc_prune_node.sh‎

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#!/bin/bash
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# Function to generate random strings
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generate_random_string() {
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local length=$1
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tr -dc 'A-Za-z0-9' </dev/urandom | head -c "$length"
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echo
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}
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# Function to generate a random port between 30000 and 39999
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generate_random_port() {
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shuf -i 30000-39999 -n 1
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}
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# Welcome message
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echo "Welcome to Codono Litecoin Prune Node Setup!"
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echo "This script will guide you through setting up a Litecoin node with pruning enabled."
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echo "It will:"
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echo " - Check for existing RPC configuration and reuse it if available."
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echo " - Install necessary software (screen, Litecoin Core) if not already installed."
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echo " - Configure Litecoin Core with a random RPC port and user credentials."
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echo " - Start the Litecoin node in a screen session for resume protection."
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echo " - Set up supervisor to manage the Litecoin node service."
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echo " - Create a default wallet and test the connection."
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# Prompt user to continue
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read -p "Do you want to continue with the setup wizard? (y/n): " -n 1 -r
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echo
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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echo "Setup aborted."
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exit 1
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fi
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# Check if ltc_rpc.yml exists and load existing RPC information
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RPC_FILE="/opt/ltc_rpc.yml"
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if [ -f "$RPC_FILE" ]; then
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echo "ltc_rpc.yml exists. Loading existing RPC information..."
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RPCUser=$(grep 'rpcuser:' "$RPC_FILE" | cut -d' ' -f2)
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RPCPass=$(grep 'rpcpassword:' "$RPC_FILE" | cut -d' ' -f2)
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RPCPort=$(grep 'rpcport:' "$RPC_FILE" | cut -d' ' -f2)
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ACCESS_IP=$(grep 'access_ip:' "$RPC_FILE" | cut -d' ' -f2)
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else
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# Gather Information
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echo "Generating RPC credentials and port..."
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RPCUser=$(generate_random_string 16)
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RPCPass=$(generate_random_string 32)
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RPCPort=$(generate_random_port)
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# Ask user for ACCESS_IP
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read -p "Enter the ACCESS_IP (or press Enter to use 0.0.0.0): " ACCESS_IP
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ACCESS_IP=${ACCESS_IP:-0.0.0.0}
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echo "RPC User: $RPCUser"
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echo "RPC Password: $RPCPass"
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echo "RPC Port: $RPCPort"
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echo "Access IP: $ACCESS_IP"
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# Save RPC information to ltc_rpc.yml
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mkdir -p /opt
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cat <<EOF > "$RPC_FILE"
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rpcuser: $RPCUser
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rpcpassword: $RPCPass
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rpcport: $RPCPort
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access_ip: $ACCESS_IP
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EOF
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fi
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# Check if screen is installed, and install it if not
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if ! command -v screen &> /dev/null; then
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echo "Screen is not installed. Installing screen..."
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sudo apt-get update
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sudo apt-get install screen -y
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else
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echo "Screen is already installed."
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fi
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# Check if Litecoin Core is installed, and install it if not
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if ! command -v litecoind &> /dev/null; then
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echo "Litecoin Core is not installed. Installing Litecoin Core..."
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cd /opt/
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wget https://download.litecoin.org/litecoin-0.21.4/linux/litecoin-0.21.4-x86_64-linux-gnu.tar.gz
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tar -xvf litecoin-0.21.4-x86_64-linux-gnu.tar.gz
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sudo install -m 0755 -o root -g root -t /usr/local/bin litecoin-0.21.4/bin/*
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else
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echo "Litecoin Core is already installed."
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fi
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# Create default wallet if it doesn't exist
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if ! litecoin-cli listwallets | grep -q "default"; then
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echo "Creating default wallet..."
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litecoin-cli createwallet "default"
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else
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echo "Default wallet already exists."
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fi
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# Create and configure litecoin.conf
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echo "Configuring litecoin.conf..."
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cd /root/.litecoin/
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cat <<EOF > litecoin.conf
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rpcuser=$RPCUser
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rpcpassword=$RPCPass
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rpcport=$RPCPort
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rpctimeout=5
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rpcallowip=$ACCESS_IP
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rpcbind=0.0.0.0
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testnet=0
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server=1
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prune=550
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addresstype=p2sh-segwit
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wallet=default
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#daemon=1
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EOF
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# Start litecoind in a screen session
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echo "Starting litecoind in a screen session..."
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screen -S litecoin_node -d -m litecoind -server -rpcbind=0.0.0.0 -rpcport=$RPCPort -rpcallowip=$ACCESS_IP -rpcuser=$RPCUser -rpcpassword=$RPCPass -prune=550 -addresstype=p2sh-segwit
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# Install and configure supervisor if not already configured
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if [ ! -f /etc/supervisor/conf.d/litecoin.conf ]; then
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echo "Installing and configuring supervisor..."
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sudo apt-get update
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sudo apt-get install supervisor -y
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cd /etc/supervisor/conf.d/
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cat <<EOF > litecoin.conf
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[program:litecoin]
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command=/usr/local/bin/litecoind -datadir=/root/.litecoin -conf=/root/.litecoin/litecoin.conf
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autostart=true
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autorestart=true
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stderr_logfile=/var/log/supervisor/litecoin.err.log
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stdout_logfile=/var/log/supervisor/litecoin.out.log
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EOF
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# Reload supervisor
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echo "Reloading supervisor..."
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supervisorctl reload
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else
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echo "Supervisor configuration already exists."
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fi
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# Testing Connection
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echo "Testing connection..."
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curl --data-binary '{"jsonrpc":"1.0","id":"curltext","method":"getblockchaininfo","params":[]}' -H 'content-type:text/plain;' http://$RPCUser:$RPCPass@127.0.0.1:$RPCPort/
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# Creating a wallet if it doesn't exist
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if ! litecoin-cli listwallets | grep -q "my_wallet"; then
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echo "Creating a wallet..."
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litecoin-cli createwallet "my_wallet"
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else
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echo "Wallet 'my_wallet' already exists."
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fi
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# Check if wallet is connected
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echo "Checking wallet connection..."
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litecoin-cli getwalletinfo
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echo "Litecoin node setup complete! You can resume the screen session with 'screen -r litecoin_node'. Credentials are stored in /opt/ltc_rpc.yml. Save them somewhere safe and delete the file if necessary."

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