Help Ethereum be more secure and decentralized and set up a light node in 5 minutes!

Medium Article

requirements

Environment variables:

• TF_VAR_AWS_ACCESS_KEY
• TF_VAR_AWS_SECRET_KEY
• TF_VAR_SSH_PASSWORD
• TF_VAR_REGION

Dependencies:

• aws-cli
• terraform
• ansible
• jq (for parsing json)
• ssh keys (~/.ssh/id_rsa and ~/.ssh/id_rsa.pub)

usage

• Get an ip address alocated and append to ansible hosts, export the address to environment

git clone https://github.com/piotrostr/eth-mainnet-light-node
aws ec2 allocate-address > /etc/allocated-address
export NODE_IP=$(cat /etc/allocated-address | jq -r ".PublicIp")
export TF_VAR_ALLOCATION_ID=$(cat /etc/allocated-address | jq -r ".AllocationId")
echo $NODE_IP >> /etc/ansible/hosts

in case one would prefer to maintain the same address, the setting of the NODE_IP and TF_VAR_ALLOCATION_ID variables can be appended to ~/.profile or ~/.bashrc

• Start and setup the instance

cd ./terraform && terraform init && terraform apply
cd ../
ansible-playbook ansible/main.yml
ssh ubuntu@$NODE_IP

• Choose a node and run, either a light node

geth --syncmode light --http

or a full node

geth --http

• After the geth node synchronizes with the mainnet it can accept requests

curl http://$NODE_IP:8545/

cleanup

Destroy the resources

cd ./terraform
terraform destroy

Cleanup after the ip address

aws ec2 release-address --allocation-id $TF_VAR_ALLOCATION_ID
rm /etc/allocated-address

and dont forget to remove the host $(echo $NODE_IP) from /etc/ansible/hosts

License

MIT