Installation

Validators play a critical role in Empeiria's testnet by securing the network and validating transactions, thereby ensuring the integrity and reliability of data. In this section, you will find essen

# Hardware requirements

We recommend the following hardware specifications:

Characteristic	Specification
Operating System	Ubuntu 18.04 or later LTS
Number of CPUs	6
RAM	32GB
SSD	240GB

1. Update & install dependencies

sudo apt update && sudo apt upgrade -y
sudo apt install curl tar wget clang pkg-config libssl-dev jq build-essential bsdmainutils git make ncdu gcc git jq htop tmux chrony liblz4-tool -y

2. Install Go

cd $HOME
VER="1.22.2"
wget "https://golang.org/dl/go$VER.linux-amd64.tar.gz"
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf "go$VER.linux-amd64.tar.gz"
rm "go$VER.linux-amd64.tar.gz"
[ ! -f ~/.bash_profile ] && touch ~/.bash_profile
echo "export PATH=$PATH:/usr/local/go/bin:~/go/bin" >> ~/.bash_profile
source $HOME/.bash_profile
[ ! -d ~/go/bin ] && mkdir -p ~/go/bin
go version

3. Set Vars

MONIKER=<YOUR_MONIKER_NAME_GOES_HERE>
echo "export MONIKER=$MONIKER" >> $HOME/.bash_profile
echo "export EMPE_CHAIN_ID="empe-testnet-2"" >> $HOME/.bash_profile
echo "export EMPE_PORT="43"" >> $HOME/.bash_profile
source $HOME/.bash_profile

4. Download Binary

cd $HOME
curl -LO https://github.com/empe-io/empe-chain-releases/raw/master/v0.2.2/emped_v0.2.2_linux_amd64.tar.gz
tar -xvf emped_v0.2.2_linux_amd64.tar.gz 
[ ! -f ~/.bash_profile ] && touch ~/.bash_profile
echo "export PATH=$PATH:/usr/local/go/bin:~/go/bin" >> ~/.bash_profile
source $HOME/.bash_profile
[ ! -d ~/go/bin ] && mkdir -p ~/go/bin
chmod +x emped
sudo mv emped ~/go/bin
source ~/.bash_profile
emped version

5. Config and Init app

emped config node tcp://localhost:${EMPE_PORT}657
emped config keyring-backend os
emped config chain-id $EMPE_CHAIN_ID
emped init $MONIKER --chain-id $EMPE_CHAIN_ID

6. Download Genesis file and Addrbook

wget -O $HOME/.empe-chain/config/genesis.json https://testnet-files.syanodes.my.id/empe-genesis.json
wget -O $HOME/.empe-chain/config/addrbook.json https://testnet-files.syanodes.my.id/empe-addrbook.json

7. Set custom port (Optional)

sed -i.bak -e "s%:1317%:${EMPE_PORT}317%g;
s%:8080%:${EMPE_PORT}080%g;
s%:9090%:${EMPE_PORT}090%g;
s%:9091%:${EMPE_PORT}091%g;
s%:8545%:${EMPE_PORT}545%g;
s%:8546%:${EMPE_PORT}546%g;
s%:6065%:${EMPE_PORT}065%g" $HOME/.empe-chain/config/app.toml
sed -i.bak -e "s%:26658%:${EMPE_PORT}658%g;
s%:26657%:${EMPE_PORT}657%g;
s%:6060%:${EMPE_PORT}060%g;
s%:26656%:${EMPE_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${EMPE_PORT}656\"%;
s%:26660%:${EMPE_PORT}660%g" $HOME/.empe-chain/config/config.toml

8. Config Seeds and Peers

SEEDS=""
PEERS="[email protected]:20656,[email protected]:26656"
sed -i -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.empe-chain/config/config.toml
sed -i -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.001uempe\"/" $HOME/.empe-chain/config/app.toml
sed -i -e 's|^indexer *=.*|indexer = "null"|' $HOME/.empe-chain/config/config.toml
sed -i 's|^prometheus *=.*|prometheus = true|' $HOME/.empe-chain/config/config.toml

9. Config Pruning

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

10. Create service file

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

[Service]
User=$USER
ExecStart=$(which emped) start --home $HOME/.empe-chain
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

Enable and start

sudo systemctl daemon-reload
sudo systemctl enable emped
sudo systemctl start emped && sudo journalctl -fu emped -o cat

# Snapshot

Latest snapshot: Block 1009741

cd $HOME
rm -f empe_snapshot.lz4

cp $HOME/.empe-chain/data/priv_validator_state.json $HOME/.empe-chain/priv_validator_state.json.backup
emped tendermint unsafe-reset-all --home $HOME/.empe-chain --keep-addr-book

if curl -s --head https://vps4.josephtran.xyz/empe/empe_snapshot.lz4 | head -n 1 | grep "200" > /dev/null; then
  echo "Snapshot found, downloading..."
  aria2c -x5 -s4 https://vps4.josephtran.xyz/empe/empe_snapshot.lz4 -o empe_snapshot.lz4
  if [ $? -eq 0 ]; then
    echo "Download complete, extracting..."
    lz4 -dc empe_snapshot.lz4 | tar -xf - -C $HOME/.empe-chain
    if [ $? -eq 0 ]; then
      echo "Snapshot downloaded and extracted successfully."
    else
      echo "Failed to extract snapshot."
    fi
  else
    echo "Failed to download snapshot."
  fi
else
  echo "No snapshot found."
fi

mv $HOME/.empe-chain/priv_validator_state.json.backup $HOME/.empe-chain/data/priv_validator_state.json

# Check status

emped status | jq

emped status | jq '{ latest_block_height: .SyncInfo.latest_block_height, catching_up: .SyncInfo.catching_up }'

*You will have to wait a while until it syncs for "catching_up": false

# Block sync left:

while true; do 
 local_height=$(emped status | jq -r '.SyncInfo.latest_block_height');
  network_height=$(curl -s https://rpc.empe.josephtran.xyz/status | jq -r '.result.sync_info.latest_block_height')
  blocks_left=$((network_height - local_height)); 

  echo -e "\033[1;38mYour node height:\033[0m \033[1;34m$local_height\033[0m | \033[1;35mNetwork height:\033[0m \033[1;36m$network_height\033[0m | \033[1;29mBlocks left:\033[0m \033[1;31m$blocks_left\033[0m"; 
  sleep 5; 
done