⚙️Installation

🛠️ Hardware Requirements

Node Type	CPU	RAM	Storage
Full (Recommended)	6 CPU	32GB	240 GB
Full (Minimum)	6 CPU	16GB	150 GB

Additional requirements

• For using the prebuilt emped - you need to run Ubuntu - 18 or newer.

• Go version - 1.21 or newer

Chain ID	Version tag	Binary Name	Binary Home
empe-testnet-2	v0.2.2	emped	$HOME/.empe-chain

⏱️ Installation time: ~10-30 minutes

The installation time depends on many factors, such as your skills, resources and characteristics of your server, the most important: disk speed, internet connection, server load CPU, RAM, so this value may differ from the one indicated by us.

⚡ Automatic installation

bash <(curl -s https://raw.githubusercontent.com/UnityNodes/scripts/refs/heads/main/empeiria-network/install-empeiria-testnet.sh)

With the help of a one-line script, all the necessary commands will be executed automatically, you only need to check the operation of your node at the end

📝 Manual installation

📌Step 1: Installation packeges and dependencies

# Install dependencies for building from source
sudo apt update
sudo apt install -y lz4 jq make git gcc build-essential curl chrony unzip gzip snapd tmux bc

# Install Go
sudo rm -rf /usr/local/go
curl -L https://go.dev/dl/go1.21.6.linux-amd64.tar.gz | sudo tar -xzf - -C /usr/local
echo 'export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin' >> $HOME/.bash_profile
source .bash_profile

📌Step 2: Set moniker and install node

Give your validator a name by which you can find yourself in explorer, put it in ""

MONIKER=""

After that, insert the following node installation command

# Clone project repository
cd $HOME
curl -LO https://github.com/empe-io/empe-chain-releases/raw/master/v0.2.2/emped_v0.2.2_linux_amd64.tar.gz
tar -xzvf emped_v0.2.2_linux_amd64.tar.gz
mv emped $HOME/go/bin/emped

# Set node CLI configuration
emped config chain-id empe-testnet-2
emped config keyring-backend test
source $HOME/.bash_profile

# Initialize the node
emped init $MONIKER --chain-id empe-testnet-2

# Download genesis and addrbook files
curl -Ls https://snapshots-testnet.unitynodes.com/empeiria-testnet/genesis.json > $HOME/.empe-chain/config/genesis.json
curl -Ls https://snapshots-testnet.unitynodes.com/empeiria-testnet/addrbook.json > $HOME/.empe-chain/config/addrbook.json

# Set minimum gas price
sed -i -e "s|^minimum-gas-prices *=.*|minimum-gas-prices = \"0uempe\"|" $HOME/.empe-chain/config/app.toml

# Set pruning
sed -i \
  -e 's|^pruning *=.*|pruning = "custom"|' \
  -e 's|^pruning-keep-recent *=.*|pruning-keep-recent = "100"|' \
  -e 's|^pruning-keep-every *=.*|pruning-keep-every = "0"|' \
  -e 's|^pruning-interval *=.*|pruning-interval = "10"|' \
  $HOME/.empe-chain/config/app.toml

# Download latest chain data snapshot
curl https://snapshots-testnet.unitynodes.com/empeiria-testnet/empeiria-testnet-latest.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.empe-chain

# Create a service
sudo tee /etc/systemd/system/emped.service > /dev/null <<EOF
[Unit]
Description=empe
After=network-online.target

[Service]
User=$USER
ExecStart=$(which emped) start
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

# Start the service and check the logs
sudo systemctl daemon-reload
sudo systemctl enable emped
sudo systemctl start emped.service
sudo journalctl -u emped.service -f -o cat

📌Step 3: Node Health Check

Follow the commands to check if your node is working properly

1. Check version

emped version

1. View sync status

while true; do 
  local_height=$(emped status | jq -r .sync_info.latest_block_height)
  network_height=$(curl -s https://rpc.empeiria-testnet.unitynodes.com/status | jq -r '.result.sync_info.latest_block_height')
  blocks_left=$((network_height - local_height))

  echo -e "\033[1;33m[Sync Status]\033[0m \033[1;32mNode Height:\033[0m \033[1;37m$local_height\033[0m | \033[1;32mNetwork Height:\033[0m \033[1;37m$network_height\033[0m | \033[1;32mBlocks Left:\033[0m \033[1;31m$blocks_left\033[0m"

  sleep 5
done

Blocks left - 0-1 everything is fine and your node catches up with the last block of the network.

1. Check logs

sudo journalctl -u emped.service -f -o cat

If your node is installed and fully synchronized with the network, proceed with the creation of the validator.

For any questions you may have during installation, please contact our chat team or other project validators.

1. [OPTIONAL] Change port

If you get an error that the default ports are busy, you can change them with the following command Example this error: ERR failure when running app err="failed to listen on 127.0.0.1:26657: listen tcp 127.0.0.1:26657: bind: address already in use"

#PORT 29
sed -i.bak -e "s%:1317%:1617%g; 
s%:8080%:8380%g;
s%:9090%:9390%g;
s%:9091%:9391%g;
s%:8545%:8845%g;
s%:8546%:8846%g;
s%:6065%:6365%g" $HOME/.empe-chain/config/app.toml	
sed -i.bak -e "s%:26658%:29658%g;
s%:26657%:29657%g;
s%:6060%:6360%g;
s%tcp://0.0.0.0:26656%tcp://0.0.0.0:29656%g;
s%:26660%:29660%g" $HOME/.empe-chain/config/config.toml
sed -i.bak -e "s%:26657%:29657%g" $HOME/.empe-chain/config/client.toml
sudo systemctl restart emped && sudo journalctl -u emped -f -o cat 

📝 Create Validator

📌Step 1: Create wallet

emped keys add wallet

Save all information after entering the command, without this you will not be able to restore data to the wallet. SAVE SEED PHRASE (12 words). ▶️ Example:

address: empe170ykaql3x6htz8ac2phyk0tpmd0fdwvjfgjym2 name: wallet pubkey: '{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"AsklOfvmEuSt8bfl+O4vJRvb65BFf4wrw7FJ4M1doqU2"}' type: local

Important write this mnemonic phrase in a safe place. It is the only way to recover your account if you ever forget your password.

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📌Step 2: Request test tokens to your wallet address

Go to the Empeiria Faucet and request test tokens to the address you created earlier.

After that, you can check your wallet balance with the following command.

emped q bank balances $(emped keys show wallet -a)

If the node has synchronized and the tokens have arrived in the wallet, create a validator with the command below.

📌Step 3: Create validator

Create a validator

emped tx staking create-validator \
  --amount 1000000uempe \
  --commission-max-change-rate "0.05" \
  --commission-max-rate "0.10" \
  --commission-rate "0.05" \
  --min-self-delegation "1" \
  --pubkey=$(emped tendermint show-validator) \
  --moniker '' \ #Validator name, displayed in explorers. 
  --website "" \ #Your website is available, or leave the field blank
  --identity "" \ #Use your KeyBase ID. If you don't have one, leave it empty.
  --details "" \ #Any details about your validator.
  --security-contact="" \
  --chain-id empe-testnet-2 \
  --from wallet #Wallet name, as specified during creation, or typically 'wallet'.

◽ Replace the following values with your own: WALLET - usually it's 'wallet', or your wallet's name. MONIKER - any convenient name for your validator, displayed in the explorer. IDENTITY - validator's avatar, displayed in the explorer. Create a KeyBase ID following the instructions or leave it empty, and it will default to a standard one. DETAILS - details about your validator, also displayed in the explorer.

WEBSITE - your website/github/twitter, etc., if you don't want to specify anything - leave it blank

Replace all necessary values indicated above with the $ sign to successfully create your validator. ◽ Example:

emped tx staking create-validator \
  --amount 1000000uempe \
  --commission-max-change-rate "0.05" \
  --commission-max-rate "0.10" \
  --commission-rate "0.05" \
  --min-self-delegation "1" \
  --pubkey=$(emped tendermint show-validator) \
  --moniker '' \ #Validator name, displayed in explorers. 
  --website "" \ #Your website is available, or leave the field blank
  --identity "" \ #Use your KeyBase ID. If you don't have one, leave it empty.
  --details "" \ #Any details about your validator.
  --security-contact="" \
  --chain-id empe-testnet-2 \
  --from wallet #Wallet name, as specified during creation, or typically 'wallet'.

After entering the command, you will receive hash transactions, check the status in the explorer if the status is successful - you have created a validator. You can find your validator here: explorer In the Active / Inactive lists.

📌Step 4: Backup

If you have successfully created a validator, be sure to save your validator.

Show priv_validator_key.json

cat $HOME/.empe-chain/config/priv_validator_key.json

SAVE YOUR PRIVATE KEY AFTER ENTERING THE COMMAND The priv_validator_key.json is the key with which you can always restore the operation of your validator, so keep it and in case of reinstallation/transfer of the validator to another server - transfer it too.

Also remember, if you are a validator with a sufficient number of delegated tokens and you are in an active set, signing blocks, always save priv_validator_state.json - this file contains information about the signed blocks of your validators, and in case of restoring the validator after reinstallation or on another server , this file won't give you the old blocks again, otherwise you'll end up in jail with no way out 💡 Hint:

• View private key: cat $HOME/.empe-chain/config/priv_validator_key.json

• View private state: cat $HOME/.empe-chain/config/priv_validator_key.json

• Private key directory: $HOME/.empe-chain/config/priv_validator_key.json

• Validator state directory: $HOME/.empe-chain/data/priv_validator_state.json

All the useful commands to manage your node in the section - Useful commands