Node setup for Blit Chain

Node setup requres some basic knowlage of Linux OS and server managment. Setting up the node can be daunting and chalanging task. This is a short guide how to set up the node.

Update the system and install the essentials

sudo apt update && sudo apt full-upgrade -y && sudo apt install 
    build-essential \
    make \
    build-essential \
    libssl-dev \
    zlib1g-dev \
    libbz2-dev \
    libreadline-dev \
    libsqlite3-dev \
    wget \
    curl \
    llvm \
    libncurses5-dev \
    libncursesw5-dev \
    xz-utils \
    tk-dev \
    libffi-dev \
    liblzma-dev \
    python3-openssl \
    git \
    libre2-dev \
    dnsutils \
    entr \
    jq \ 
    ufw

Install Goenv and Go

git clone https://github.com/go-nv/goenv.git ~/.goenv
 
echo 'export GOENV_ROOT="$HOME/.goenv"' >> ~/.bashrc
echo 'export PATH="$GOENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(goenv init -)"' >> ~/.bashrc
echo 'export PATH="$GOROOT/bin:$PATH"' >> ~/.bashrc
echo 'export PATH="$PATH:$GOPATH/bin"' >> ~/.bashrc
 
#Save changes
source ~/.bashrc
 
goenv install 1.21.3
goenv global 1.21.3

Install Pyenv

git clone https://github.com/pyenv/pyenv.git ~/.pyenv
 
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(pyenv init -)"' >> ~/.bashrc
 
#Save changes
source ~/.bashrc

Set up variables and set up cosmovisor

export BLIT_VERSION=$(curl http://mainnet.blitchain.net/cosmos/base/tendermint/v1beta1/node_info | jq -r .application_version.version)
 
export DAEMON_HOME=$HOME/.blit
 
#Install and prepare cosmovisor
go install cosmossdk.io/tools/cosmovisor/cmd/cosmovisor@latest
mkdir -p $DAEMON_HOME/cosmovisor/
cd $DAEMON_HOME/cosmovisor/

Set up the script

curl https://raw.githubusercontent.com/BlitChain/blitchain/develop/scripts/cosmovisor-preupgrade-build-from-source.sh > cosmovisor-preupgrade-build-from-source.sh
chmod +x ./cosmovisor-preupgrade-build-from-source.sh

Install latest blitd and set up sim links

./cosmovisor-preupgrade-build-from-source.sh $BLIT_VERSION
ln -s $DAEMON_HOME/cosmovisor/upgrades/$BLIT_VERSION $DAEMON_HOME/cosmovisor/current
sudo ln -s $DAEMON_HOME/cosmovisor/current/bin/blitd /usr/local/bin/blitd -f

Set up the node and other configuration

cd $DAEMON_HOME/cosmovisor/current/
make mainnet
blitd init MONIKER # Change moniker to the name you want your validator to be recognized

This settings should only be changed if you plan to run your node a bit differently.

cd $HOME/.blit/config
vim app.toml

This is an optional step if you do not want to use cosmovisor sctipt. If you do not want to run the binary from the upgrade path you need to link the path to blitvm.

[blit]
blitvm_path = "/home/user/path/to/blitvm"

Create systemd service file

sudo tee /etc/systemd/system/blitd.service > /dev/null <<EOF
[Unit]
Description=Blitchain Daemon
After=network-online.target
 
[Service]
User=$USER
ExecStart=$(goenv which cosmovisor) run start
Restart=on-failure
RestartSec=5
Environment="DAEMON_HOME=$DAEMON_HOME"
Environment="DAEMON_NAME=blitd"
Environment="DAEMON_ALLOW_DOWNLOAD_BINARIES=false"
Environment="DAEMON_RESTART_AFTER_UPGRADE=true"
Environment=DAEMON_POLL_INTERVAL=1s
Environment=DAEMON_LOG_BUFFER_SIZE=512
Environment=DAEMON_PREUPGRADE_MAX_RETRIES=10
Environment=COSMOVISOR_CUSTOM_PREUPGRADE=cosmovisor-preupgrade-build-from-source.sh
WorkingDirectory=$DAEMON_HOME/cosmovisor/current/
Environment=PATH=$HOME/.pyenv/shims:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
LimitNOFILE=65535
 
 
[Install]
WantedBy=multi-user.target
EOF

Start the service

sudo systemctl daemon-reload
sudo systemctl enable blitd
sudo systemctl start blitd

Blit Chain Node Commands