💻Installation

Server preparation

apt update && apt upgrade -y

apt install curl iptables build-essential git wget jq make gcc nano tmux htop nvme-cli pkg-config libssl-dev libleveldb-dev tar clang bsdmainutils ncdu unzip libleveldb-dev -y

Install GO

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$ver.linux-amd64.tar.gz"
echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile
source $HOME/.bash_profile
go version

Node installation

#mkdir -p ~/go/bin
mkdir -p empe-chain && cd empe-chain
curl -LO https://github.com/empe-io/empe-chain-releases/raw/master/v0.4.0/emped_v0.4.0_linux_amd64.tar.gz
tar -xvf emped_v0.4.0_linux_amd64.tar.gz
mv emped ~/go/bin
chmod u+x ~/go/bin/emped

emped version --long | grep -e version -e commit
# version: v0.4.0
# commit: ed3616c08b12bc9fe553b33dcf23625b30376f1f

# LIB
mkdir ~/.empe-chain/lib
wget https://github.com/CosmWasm/wasmvm/releases/download/v1.5.2/libwasmvm.x86_64.so -P $HOME/.empe-chain/lib
echo 'export LD_LIBRARY_PATH=/root/.empe-chain/lib:$LD_LIBRARY_PATH' >> ~/.profile
source ~/.profile

We initialize the node to create the necessary configuration files

emped init UTSA_guide --chain-id empe-testnet-2

Download Genesis and Config

wget -O $HOME/.empe-chain/config/genesis.json "https://raw.githubusercontent.com/empe-io/empe-chains/master/testnet-2/genesis.json"

sha256sum ~/.empe-chain/config/genesis.json
# 2aabbc5e3cabbd0f2cdb9a442dc476397c05b624f42ee23e832fdf1c48f60c91

At this stage, we can download the address book

wget -O $HOME/.empe-chain/config/addrbook.json "https://share102.utsa.tech/empeiria/addrbook.json"

Set up node configuration

emped config chain-id empe-testnet-2 
emped config keyring-backend os
sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.0025uempe\"/;" ~/.empe-chain/config/app.toml
external_address=$(wget -qO- eth0.me)
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.empe-chain/config/config.toml

(OPTIONAL) Set up pruning

pruning="custom"
pruning_keep_recent="1000"
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\"/" $HOME/.empe-chain/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.empe-chain/config/app.toml

(OPTIONAL) Set up indexer

indexer="null"
sed -i -e "s/^indexer *=.*/indexer = \"$indexer\"/" $HOME/.empe-chain/config/config.toml

(OPTIONAL) Enable/Disable Snapshots

snapshot_interval=1000
sed -i.bak -e "s/^snapshot-interval *=.*/snapshot-interval = \"$snapshot_interval\"/" ~/.empe-chain/config/app.toml

Create a service file

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

[Service]
User=$USER
ExecStart=$(which emped) start
Restart=on-failure
RestartSec=3
LimitNOFILE=65535
Environment="LD_LIBRARY_PATH=/root/.empe-chain/lib:$LD_LIBRARY_PATH"

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable emped
systemctl restart emped && journalctl -u emped -f -o cat

If peers do not cling for a long time or you see errors error: wrong Block.Header.AppHash, you need to use State sync or boot from a Snapshot

To view useful commands, go to Useful commands

To create a validator, go to Creating / Editing a Validator