# Configure a node

Select a chain:

```
export CHAINID=empe-testnet-2
export MONIKER=<your moniker> 
```

Init chain and delete generated genesis:

```
emped init $MONIKER --chain-id $CHAINID
rm -rf ~/.empe-chain/config/genesis.json
```

Clone repository with chains

<pre><code>git clone https://github.com/empe-io/empe-chains.git
<strong>cd empe-chains/testnet-2/   
</strong></code></pre>

Copy genesis file from repo:

<pre><code><strong>cp genesis.json ~/.empe-chain/config/
</strong></code></pre>

Change the persistent peers inside `config.toml` file

```
sed -e "s|persistent_peers = \".*\"|persistent_peers = \"$(cat .data | grep -oP 'Persistent peers\s+\K\S+')\"|g" ~/.empe-chain/config/config.toml > ~/.empe-chain/config/config.toml.tmp
mv ~/.empe-chain/config/config.toml.tmp  ~/.empe-chain/config/config.toml
```

Set minimum gas price in `app.toml` file

```
sed -e "s|minimum-gas-prices = \".*\"|minimum-gas-prices = \"$(cat .data | grep -oP 'Minimum Gas Price\s+\K\S+')\"|g" ~/.empe-chain/config/app.toml > ~/.empe-chain/config/app.toml.tmp
mv ~/.empe-chain/config/app.toml.tmp  ~/.empe-chain/config/app.toml
```

Change `external_address` value to contact your node using public ip of your node:

```
PUB_IP=`curl -s -4 icanhazip.com`
sed -e "s|external_address = \".*\"|external_address = \"$PUB_IP:26656\"|g" ~/.empe-chain/config/config.toml > ~/.empe-chain/config/config.toml.tmp
mv ~/.empe-chain/config/config.toml.tmp  ~/.empe-chain/config/config.toml
```

Remember to install wasmvm library as described in the [install wasmvm](https://docs.empe.io/empe-blockchain/overview/install-wasmvm-library) to avoid issues with wasm smart contracts.