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How to Run a Validator Node

Requirements:

  • CPU: 2 vCPU
  • Memory: 4 GB RAM
  • Disk: 100 GB HDD or higher
  • Bandwidth: 400Mbps download or higher. 800Mbps upload or higher
  • Open TCP Ports: 8231, 8085, 9864
  • Open UDP Ports: 7621

Setup on Ubuntu Server​

  1. Update OS:
sudo apt update
  1. Install Java:
sudo apt install default-jdk
  1. Open Required Ports:

For UFW (Uncomplicated Firewall):

sudo ufw allow 8231/tcp
sudo ufw allow 8085/tcp
sudo ufw allow 9864/tcp
sudo ufw allow 7621/udp
sudo ufw reload

For iptables:

sudo iptables -A INPUT -p tcp --dport 8231 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 8085 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 9864 -j ACCEPT
sudo iptables -A INPUT -p udp --dport 7621 -j ACCEPT
sudo netfilter-persistent save

Note: If you're using a cloud provider, you may also need to configure the ports in their firewall/security group settings.

  1. Install the validator node software and config file:
wget https://github.com/pwrlabs/PWR-Validator/releases/download/15.63.9/validator.jar
wget https://github.com/pwrlabs/PWR-Validator/raw/refs/heads/main/config.json
  1. Setup your password:
echo "your password here" > password
  1. Run the Node:

Replace <YOUR_SERVER_IP> with your server's actual IP.

nohup sudo java --enable-native-access=ALL-UNNAMED -jar validator.jar --ip <your nodes ip here> --password password &

NOTE: Make sure ports 8085 and 8231 are open for TCP.

  1. Get Your Address
java -jar validator.jar get-address password
  1. Become a Validator Node
  • Initially, your node will synchronize with the blockchain but will not assume validator responsibilities until it possesses staked PWR Coins.
  • To obtain sufficient PWR Coins for staking, apply to become a testnet validator. Once approved, you can use our discord bot to claim 100k PWR to stake.
  • After claiming your coins, your node will initiate a transaction to enlist as a validator.
  1. Checking your nodes logs

If you wish to check your nodes log, you can do so using the following command:

tail -n 1000 nohup.out -f

Importing an Existing Wallet​

To import your old wallet using this update:

java -jar validator.jar import-seed-phrase <password file here> <seed phrase here>

Example:

java -jar validator.jar import-seed-phrase password public neither spider scare diagram knife fragile road kit guess crucial bachelor

Congratulations, you've now set up and run a PWR Chain validator node!