Push Chain Testnet Validator

Lumera Protocol is a layer-1 blockchain designed to support decentralized AI services and Web3 applications.

Chaind ID	Last Version Tag
lumera-mainnet-1	v1.9.1

Service	URL
Dashboard	https://astrostake.xyz/networks/lumera
RPC	https://lumera-rpc.linknode.org
API	https://lumera-api.linknode.org
gRPC	https://lumera-grpc.linknode.org
addrbook	https://snapshots.linknode.org/lumera/addrbook
genesis	https://snapshots.linknode.org/lumera/genesis
Snapshot	https://snapshots.linknode.org/lumera/snapshot

Installation

1. Install Dependencies

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

2. Install Go

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

3. Set Vars

Configuration:

Wallet

Moniker

Port

Generated Code:

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4. Download Binary

cd $HOME
rm -rf pushchain-testnet
mkdir pushchain-testnet
cd pushchain-testnet
wget https://github.com/pushchain/push-chain-node/releases/download/v0.0.16/push-chain_0.0.16_linux_amd64.tar.gz
tar -xvzf push-chain_0.0.16_linux_amd64.tar.gz
chmod +x bin/pchaind
mv bin/pchaind /usr/local/bin
pchaind version

5. Initialized

pchaind init $MONIKER --chain-id $PUSH_CHAIN_ID
sed -i \
  -e 's|^chain-id *=.*|chain-id = "push_42101-1"|' \
  -e "s|^node *=.*|node = \"tcp://localhost:${PUSH_PORT}657\"|" \
  $HOME/.pchain/config/client.toml

6. Download addrbook & genesis

wget -O $HOME/.pchain/config/genesis.json https://snapshots.linknode.org/republic-testnet/genesis
wget -O $HOME/.pchain/config/addrbook.json https://snapshots.linknode.org/republic-testnet/addrbook

7. Configure Node

Configure peers

SEEDS=""
PEERS=""
sed -i -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.pchain/config/config.toml

Update app.toml ports

sed -i.bak -e "s%:1317%:${PUSH_PORT}317%g;
s%:8080%:${PUSH_PORT}080%g;
s%:9090%:${PUSH_PORT}090%g;
s%:9091%:${PUSH_PORT}091%g;
s%:8545%:${PUSH_PORT}545%g;
s%:8546%:${PUSH_PORT}546%g;
s%:6065%:${PUSH_PORT}065%g" $HOME/.pchain/config/app.toml

Update config.toml ports

sed -i.bak -e "s%:26658%:${PUSH_PORT}658%g;
s%:26657%:${PUSH_PORT}657%g;
s%:6060%:${PUSH_PORT}060%g;
s%:26656%:${PUSH_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${PUSH_PORT}656\"%;
s%:26660%:${PUSH_PORT}660%g" $HOME/.pchain/config/config.toml

Configure Pruning

Pruning Strategy

Select a strategy to manage your node's storage usage.

💡Recommended for Validators to fine-tune storage.

Keep Recent

Number of recent blocks/states to keep in disk.

blocks

Interval

Frequency of deletion. E.g., 10 means prune every 10 blocks.

blocks

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Set Minimum Gas Fee & Other Parameters

sed -i 's|minimum-gas-prices =.*|minimum-gas-prices = "2500000000arai"|g' $HOME/.pchain/config/app.toml
sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.pchain/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.pchain/config/config.toml

8. Create Services

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

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

[Install]
WantedBy=multi-user.target
EOF

9. Start Services

sudo systemctl daemon-reload
sudo systemctl enable pchaind
sudo systemctl restart pchaind && sudo journalctl -u pchaind -fo cat

Useful Commands

INFO

For a complete guide to creating a validator, visit our Cheat Sheet & Key Management page. It covers all the necessary commands and crucial steps for securing your keys.

Check logs

sudo journalctl -u pchaind -fo cat

Check Sync

curl -sL https://raw.githubusercontent.com/astrostake/scripts/refs/heads/main/cosmos_sync_monitor.sh | bash -s -- --directory $HOME/.pchain --public-rpc https://republic-rpc.linknode.org --interval 5

🛡️ Security

To apply a quick security baseline, you can configure your firewall like this:

sudo ufw allow ${PUSH_PORT}656/tcp comment 'PUSHCHAIN Node p2p Port'

🔐 For a more secure and maintainable setup, check out our Essentials Guide, including SSH key setup, Fail2Ban protection, and a full VPS hardening checklist.