Install

Manual Installation

Official Documentation Recommended Hardware: 4 Cores, 8GB RAM, 200GB of storage (NVME)

# install dependencies, if needed
sudo apt update && sudo apt upgrade -y
sudo apt install curl git wget htop tmux build-essential jq make lz4 gcc unzip -y

# install go, if needed
cd $HOME
VER="1.22.3"
wget "https://golang.org/dl/go$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

# set vars
echo "export WALLET="wallet"" >> $HOME/.bash_profile
echo "export MONIKER="test"" >> $HOME/.bash_profile
echo "export EMPED_CHAIN_ID="empe-testnet-2"" >> $HOME/.bash_profile
echo "export EMPED_PORT="28"" >> $HOME/.bash_profile
source $HOME/.bash_profile

# download binary
cd $HOME
curl -LO https://github.com/empe-io/empe-chain-releases/raw/master/v0.1.0/emped_linux_amd64.tar.gz
tar -xvf emped_linux_amd64.tar.gz 
mv emped ~/go/bin

# config and init app
emped config node tcp://localhost:${EMPED_PORT}657
emped config keyring-backend os
emped config chain-id empe-testnet-2
emped init "test" --chain-id empe-testnet-2

# download genesis and addrbook
wget -O $HOME/.empe-chain/config/genesis.json https://server-5.itrocket.net/testnet/empeiria/genesis.json
wget -O $HOME/.empe-chain/config/addrbook.json  https://server-5.itrocket.net/testnet/empeiria/addrbook.json

# set seeds and peers
SEEDS="[e-mail]:28656"
PEERS="[e-mail]:28656"
sed -i -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*seeds *=.*/seeds = \"$SEEDS\"/}" \
       -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*persistent_peers *=.*/persistent_peers = \"$PEERS\"/}" $HOME/.empe-chain/config/config.toml


# set custom ports in app.toml
sed -i.bak -e "s%:1317%:${EMPED_PORT}317%g;
s%:8080%:${EMPED_PORT}080%g;
s%:9090%:${EMPED_PORT}090%g;
s%:9091%:${EMPED_PORT}091%g;
s%:8545%:${EMPED_PORT}545%g;
s%:8546%:${EMPED_PORT}546%g;
s%:6065%:${EMPED_PORT}065%g" $HOME/.empe-chain/config/app.toml

# set custom ports in config.toml file
sed -i.bak -e "s%:26658%:${EMPED_PORT}658%g;
s%:26657%:${EMPED_PORT}657%g;
s%:6060%:${EMPED_PORT}060%g;
s%:26656%:${EMPED_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${EMPED_PORT}656\"%;
s%:26660%:${EMPED_PORT}660%g" $HOME/.empe-chain/config/config.toml

# config pruning
sed -i -e "s/^pruning *=.*/pruning = \"custom\"/" $HOME/.empe-chain/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"100\"/" $HOME/.empe-chain/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"50\"/" $HOME/.empe-chain/config/app.toml

# set minimum gas price, enable prometheus and disable indexing
sed -i 's|minimum-gas-prices =.*|minimum-gas-prices = "0.0001uempe"|g' $HOME/.empe-chain/config/app.toml
sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.empe-chain/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.empe-chain/config/config.toml

# create service file
sudo tee /etc/systemd/system/emped.service > /dev/null <<EOF
[Unit]
Description=Empeiria node
After=network-online.target
[Service]
User=$USER
WorkingDirectory=$HOME/.empe-chain
ExecStart=$(which emped) start --home $HOME/.empe-chain
Restart=on-failure
RestartSec=5
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF

# reset and download snapshot
emped tendermint unsafe-reset-all --home $HOME/.empe-chain
if curl -s --head curl https://server-5.itrocket.net/testnet/empeiria/null | head -n 1 | grep "200" > /dev/null; then
  curl https://server-5.itrocket.net/testnet/empeiria/null | lz4 -dc - | tar -xf - -C $HOME/.empe-chain
    else
  echo "no snapshot founded"
fi

# enable and start service
sudo systemctl daemon-reload
sudo systemctl enable emped
sudo systemctl restart emped && sudo journalctl -u emped -f

Create wallet

# to create a new wallet, use the following command. don’t forget to save the mnemonic
emped keys add $WALLET

# to restore exexuting wallet, use the following command
emped keys add $WALLET --recover

# save wallet and validator address
WALLET_ADDRESS=$(emped keys show $WALLET -a)
VALOPER_ADDRESS=$(emped keys show $WALLET --bech val -a)
echo "export WALLET_ADDRESS="$WALLET_ADDRESS >> $HOME/.bash_profile
echo "export VALOPER_ADDRESS="$VALOPER_ADDRESS >> $HOME/.bash_profile
source $HOME/.bash_profile

# check sync status, once your node is fully synced, the output from above will print "false"
emped status 2>&1 | jq 

# before creating a validator, you need to fund your wallet and check balance
emped query bank balances $WALLET_ADDRESS 

Create validator

Commission max change rate

emped tx staking create-validator \
--amount 1000000uempe \
--from $WALLET \
--commission-rate 0.1 \
--commission-max-rate 0.2 \
--commission-max-change-rate 0.01 \
--min-self-delegation 1 \
--pubkey $(emped tendermint show-validator) \
--moniker "test" \
--identity "" \
--website "" \
--details "blockchain" \
--chain-id empe-testnet-2 \
--gas auto --gas-adjustment 1.5 --fees 30uempe \
-y

Firewall security

Set the default to allow outgoing connections, deny all incoming, allow ssh and node p2p port

sudo ufw default allow outgoing 
sudo ufw default deny incoming 
sudo ufw allow ssh/tcp 
sudo ufw allow ${EMPED_PORT}656/tcp
sudo ufw enable

Delete node

sudo systemctl stop emped
sudo systemctl disable emped
sudo rm -rf /etc/systemd/system/emped.service
sudo rm $(which emped)
sudo rm -rf $HOME/.empe-chain
sed -i "/EMPED_/d" $HOME/.bash_profile