A startup script for VPS providers such as Vultr to automatically set up geth and chainlink

geth-chainlink-node.bash

#!/bin/bash

# If you are using Vultr as a VPS service and you run this in as your startup script, then you should see the results in /tmp/firstboot.log
# The script will take some time to run. You can view progress when you first log in by typing in the command:
# tail -f /tmp/firstboot.log

echo "Starting installation of Geth + ChainLink node"

# Install dependencies
apt update -y && apt upgrade -y
apt -y install git build-essential net-tools apt-transport-https ca-certificates curl wget gnupg2 software-properties-common ntp postgresql

# Start ntp service
/etc/init.d/ntp start

echo "Install Docker"
curl -fsSL https://download.docker.com/linux/$(. /etc/os-release; echo "$ID")/gpg | apt-key add -
add-apt-repository -y "deb [arch=amd64] https://download.docker.com/linux/$(. /etc/os-release; echo "$ID") $(lsb_release -cs) stable"
apt -y update
apt -y install docker-ce

echo "Install Go(lang) 1.9.1"
curl -O https://storage.googleapis.com/golang/go1.9.1.linux-amd64.tar.gz
tar -xvf go1.9.1.linux-amd64.tar.gz
mv go /usr/local

# Set the Go paths
echo "export PATH=$PATH:/usr/local/go/bin" >> ~/.profile
source ~/.profile

echo "Install Go-Ethereum (Geth)"
git clone https://github.com/ethereum/go-ethereum.git && cd go-ethereum
make geth
# Start Geth in the background with &
./build/bin/geth --rpc --rpcaddr 172.17.0.1 --syncmode "light" &

echo "Configure PostgreSQL"
echo "This may require a manual restart with '/etc/init.d/postgresql restart'"
cd /etc/postgresql/*/main/
echo "listen_addresses = '172.17.0.1'" >> postgresql.conf
echo "host all all 172.17.0.0/16 trust" >> pg_hba.conf
/etc/init.d/postgresql restart

echo "Set up ChainLink"
cd /root/
docker pull smartcontract/chainlink

# Save .env file
echo "DATABASE_URL=postgresql://postgres@172.17.0.1:5432/nayru_development?encoding=utf8&pool=5&timeout=5000" > .env
echo "ETHEREUM_URL=http://172.17.0.1:8545" >> .env
echo "ETHEREUM_EXPLORER_URL=https://etherscan.io" >> .env

echo ""
echo ""

echo "ChainLink node has been made ready"
echo "==================================="
echo "Remember to restart PostgreSQL manually if it hasn't been done '/etc/init.d/postgresql restart'"
echo "Make sure you initialize the database with 'docker run -it --env-file=.env smartcontract/chainlink rake oracle:initialize'"
echo "Then start ChainLink by running 'docker run -t --env-file=.env smartcontract/smartoracle'"
echo "==================================="