💾 Consensus Node Installation

Update system and install build tools

sudo apt update && sudo apt upgrade -y
sudo 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

sudo rm -rf /usr/local/go
curl -Ls https://go.dev/dl/go1.24.2.linux-amd64.tar.gz | sudo tar -xzf - -C /usr/local
eval $(echo 'export PATH=$PATH:/usr/local/go/bin' | sudo tee /etc/profile.d/golang.sh)
eval $(echo 'export PATH=$PATH:$HOME/go/bin' | tee -a $HOME/.profile)
echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile
source $HOME/.bash_profile
go version

Download binary files

cd $HOME
rm -rf celestia-app
git clone https://github.com/celestiaorg/celestia-app.git
cd celestia-app
git checkout v6.2.5-mocha

make install

We initialize the node to create the necessary configuration files

celestia-appd init <YOUR_MONIKER_NAME> --chain-id mocha-4

Download Genesis

curl -Ls https://testnet-snap.astrosynx.com/celestia/genesis.json > $HOME/.celestia-app/config/genesis.json

At this stage, we can download the address book

curl -Ls https://testnet-snap.astrosynx.com/celestia/addrbook.json > $HOME/.celestia-app/config/addrbook.json

Set up node configuration

# Set node configuration
celestia-appd config set client chain-id mocha-4
celestia-appd config set client keyring-backend file
celestia-appd config set client node tcp://localhost:26657

sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.002utia\"/;" ~/.celestia-app/config/app.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.celestia-app/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.celestia-app/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.celestia-app/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.celestia-app/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 50/g' $HOME/.celestia-app/config/config.toml

Set up pruning

pruning="custom"
pruning_keep_recent="1000"
pruning_keep_every="0"
pruning_interval="10"
sed -i -e "s/^pruning *=.*/pruning = \"$pruning\"/" $HOME/.celestia-app/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.celestia-app/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.celestia-app/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.celestia-app/config/app.toml

Set up indexer

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

Create a service file

sudo tee /etc/systemd/system/celestia-appd.service > /dev/null <<EOF
[Unit]
Description=Celestia node
After=network-online.target

[Service]
User=$USER
WorkingDirectory=$HOME/.celestia-app
ExecStart=$(which celestia-appd) start --home $HOME/.celestia-app
Restart=on-failure
RestartSec=5
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

Download latest chain snapshot

curl -L https://testnet-snap.astrosynx.com/celestia/snap_testnet.tar.lz4 | tar -Ilz4 -xf - -C $HOME/.celestia-app/

sudo systemctl daemon-reload
sudo systemctl enable celestia-appd
sudo systemctl start celestia-appd && sudo journalctl -u celestia-appd -f