Fullnode Install

tip: the following commands are executed as root by default. If you are not a root user, please prepend the commands with sudo

• Network: zgtendermint_16600-2

• Latest Version: 0.34.27

• Client Version: v0.2.3

Requirements

The minimum hardware requirements for running an 0gchain node are:

• CPU: 8 cores

• Memory: 16GB RAM

• Disk: 1 TB NVMe/SSD Storage with Write Throughput > 1000 MiBps

• Bandwidth: 100 Mbps

• System: Ubuntu focal (Ubuntu 20.04 x64)

Install Tools

apt -q update
apt -qy install curl git jq lz4 build-essential aria2 unzip wget

rm -rf /usr/local/go
curl -Ls https://go.dev/dl/go1.22.0.linux-amd64.tar.gz | sudo tar -xzf - -C /usr/local
eval $(echo 'export PATH=$PATH:/usr/local/go/bin' | sudo tee /etc/profile.d/gobinpath.sh)
eval $(echo 'export PATH=$PATH:$HOME/go/bin' | sudo tee /etc/profile.d/gopath.sh)

Clone and Build 0g

export TAG=v0.2.3
git clone -b v0.2.3 https://github.com/0glabs/0g-chain
cd 0g-chain
git checkout tags/$TAG # Tag the desired version
make install

0gchaind version

0g basic setup

# Set home dir, example: /data/0gchain
export DIR=/data/0gchain
mkdir -pv $DIR
ln -sv $DIR $HOME/.0gchain

0gchaind config chain-id zgtendermint_16600-2

# A moniker is a human-readable name for your node. Moniker can contain only ASCII characters, and cannot exceed 70 characters.
0gchaind init <moniker> --chain-id zgtendermint_16600-2

Set Custom Port

Get Script for <portset.sh>

DIR=$HOME/.0gchain
MIN_GAS=0.0001ua0gi

bash portset.sh $DIR $MIN_GAS 2

Genesis File

DIR=$HOME/.0gchain
curl -Ls https://github.com/0glabs/0g-chain/releases/download/v0.2.3/genesis.json > \
         $DIR/config/genesis.json

# verify the correctness of the genesis configuration file
0gchaind validate-genesis

Add Seeds

DIR=$HOME/.0gchain
SEEDS="81987895a11f6689ada254c6b57932ab7ed909b6@54.241.167.190:26656,010fb4de28667725a4fef26cdc7f9452cc34b16d@54.176.175.48:26656,e9b4bc203197b62cc7e6a80a64742e752f4210d5@54.193.250.204:26656,68b9145889e7576b652ca68d985826abd46ad660@18.166.164.232:26656"

sed -i -e "s|^seeds *=.*|seeds = \"$SEEDS\"|" $DIR/config/config.toml    

Address Book

DIR=$HOME/.0gchain
rm -rf $DIR/config/addrbook.json
wget -O $HOME/.0gchain/config/addrbook.json https://files.nodeshub.online/testnet/0g-chain/addrbook.json

Create Service with Cosmovisor

DIR=$HOME/.0gchain
BIN=$(which 0gchaind)
go install cosmossdk.io/tools/cosmovisor/cmd/cosmovisor@latest
mkdir -pv $DIR/cosmovisor/genesis/bin
ln -sv $DIR/cosmovisor/genesis $DIR/cosmovisor/current
cp $BIN $DIR/cosmovisor/genesis/bin/

tee /etc/systemd/system/0gchain.service > /dev/null << EOF
[Unit]
Description=0gchain node service
After=network-online.target

[Service]
User=$USER
Restart=on-failure
Type=simple
ExecStart=$(which cosmovisor) run start
WorkingDirectory=$DIR
SyslogIdentifier=0gchaind
LimitNOFILE=65545
Environment="DAEMON_NAME=0gchaind"
Environment="DAEMON_HOME=$DIR"
Environment="DAEMON_ALLOW_DOWNLOAD_BINARIES=false"
Environment="DAEMON_LOG_BUFFER_SIZE=512"
Environment="DAEMON_RESTART_AFTER_UPGRADE=true"
Environment="UNSAFE_SKIP_BACKUP=true"

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable 0gchain.service
systemctl start 0gchain.service
journalctl -u 0gchain.service -f -o cat

TIP: Garbage Collection Optimization

To maximize sync speed for validators and other network providers that are running pruning nodes, the following settings are recommended:

• Start 0gchaind process with environment variable and value GOGC=900; this instructs the golang garbage collector to wait until the heap has grown to 9x it's initial allocated size before running garbage collection

• Start 0gchaind process with environment variable GOMEMLIMIT set to 66% of the total memory available to the 0gchaind process (e.g. GOMEMLIMIT=40GB for a node with 64 GB of memory) to ensure garbage collection runs whenever 66% of the total memory is used