1. AWS Node Setup

I started with a fresh t2.large AWS Ubuntu EC2 instance using AMI ami-0ff4c8fb495a5a50d and adding a 60Gb data volume.

First, mount the data volume.

sudo mkfs -t xfs /dev/xvdh
sudo mkdir /data
sudo mount /dev/xvdh /data
sudo chown ubuntu:ubuntu /data

1.1. Setup the IOHK Cache

sudo mkdir -p /etc/nix
cat <<EOF | sudo tee /etc/nix/nix.conf
substituters = https://cache.nixos.org https://hydra.iohk.io https://iohk.cachix.org
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo=

1.2. Install Nix

We use a little trick here to let Nix use a symlinked directory. This is not recommended if you plan to have setups on multiple machines with potentially different configurations, but that doesn’t matter here.

mkdir /data/nix
sudo ln -s /data/nix /nix
echo "export NIX_IGNORE_SYMLINK_STORE=1" >> ~/.bashrc
source ~/.bashrc
curl -L https://nixos.org/nix/install | sh
. /home/ubuntu/.nix-profile/etc/profile.d/nix.sh

1.3. Download the Cardano Node

cd /data
git clone https://github.com/input-output-hk/cardano-node
cd cardano-node
git checkout tags/1.29.0 -b 1_29_0

1.4. Build the node

nix-build -A scripts.alonzo-purple.node -o result/alonzo-purple/cardano-node-alonzo-purple
nix-build -A cardano-cli -o result/alonzo-purple/cardano-cli

1.5. Start the node

cd /data/cardano-node/result/alonzo-purple

Leave this running and open another shell.

1.6. Setup some environment variables

echo "export CARDANO_CLI=/data/cardano-node/result/alonzo-purple/cardano-cli/bin/cardano-cli" >> ~/.bashrc
echo "export TESTNET_MAGIC_NUM=8" >> ~/.bashrc
echo "export CARDANO_NODE_SOCKET_PATH=/data/cardano-node/result/alonzo-purple/state-node-alonzo-purple/node.socket" >> ~/.bashrc
source ~/.bashrc

You can check on the status of the node with:

$CARDANO_CLI query tip --testnet-magic $TESTNET_MAGIC_NUM

You should see something like this:

    "epoch": 60,
    "hash": "eb9453a91760928b286ea5137d6f9325f89f78b9c643f1e789c63c74b1934fa3",
    "slot": 431693,
    "block": 21187,
    "era": "Mary",
    "syncProgress": "19.01"

When the node has fully synced you will see that the era has changed to Alonzo.

    "epoch": 289,
    "hash": "7521f071d0bfc050cde302f1352ed44c2fc74927f1e28afea1b1df2c4c012d5c",
    "slot": 2079664,
    "block": 102026,
    "era": "Alonzo",
    "syncProgress": "100.00"

You can use jq if you ever want to get some specific information on its own, for example:

sudo apt update
sudo apt install jq -y

$CARDANO_CLI query tip --testnet-magic $TESTNET_MAGIC_NUM | jq -r '.syncProgress'