🖥️Light node (Shwap)
In this guide, we install the Light node on a separate server and use data from Consensus Full Node!
Server preparation
apt update && apt upgrade -y
apt install curl build-essential git wget jq make gcc tmux htop nvme-cli pkg-config libssl-dev libleveldb-dev tar clang bsdmainutils ncdu unzip libleveldb-dev lz4 -y
Install GO
ver="1.23.1" && \
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$ver.linux-amd64.tar.gz" && \
echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile && \
source $HOME/.bash_profile && \
go version
ufw allow 2121 comment light_node
Node installation
IMPORTANT - starting October 7th, a new version v0.18.1-mocha for the Celestia DA layer (Mocha) will be released, which will use Shwap and will not be compatible with previous versions. For the new release, it will be necessary to remove Environment=GODEBUG="asynctimerchan=1"
from the service file
The process of setting up and starting a new node remains the same, but the new node will need to synchronize all blocks from the genesis, or use a snapshot synchronized with the new version. Due to optimizations, a significant decrease in hard disk usage is expected
Both protocols will work side by side during a month-long transition period from October 7th to November 7th for Mocha
cd $HOME
rm -rf celestia-node
git clone https://github.com/celestiaorg/celestia-node && cd celestia-node
git checkout tags/v0.21.9-mocha
make build
make install
celestia version
#Semantic version: v0.21.9-mocha
#Commit: f9698d454bb76f85d9110d0107016cb00684a9c7
#https://docs.celestia.org/developers/celestia-node-key/
make cel-key
mv $HOME/celestia-node/cel-key /usr/local/bin/
cel-key add light_wallet --keyring-backend test --node.type light --p2p.network mocha
# show wallet address
cel-key list --node.type light --keyring-backend test --p2p.network mocha
Initializing the light
--core.ip use the address of our remote RPC node
--p2p.network use the chain id of our network
--core.port use the gRPC port from our RPC node
--keyring.keyname use the name of the wallet we created
celestia light init \
--core.ip <RPC_NODE_IP> \
--p2p.network mocha \
--core.port 9090 \
--keyring.keyname light_wallet
Create a service file
tee <<EOF >/dev/null /etc/systemd/system/celestia-light.service
[Unit]
Description=celestia-light testnet daemon
After=network-online.target
[Service]
User=$USER
ExecStart=$(which celestia) light start \
--p2p.network mocha \
--metrics.tls=true --metrics --metrics.endpoint otel.mocha.celestia.observer \
--keyring.keyname light_wallet
Restart=on-failure
RestartSec=3
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable celestia-light
systemctl restart celestia-light && journalctl -u celestia-light -f -o cat
Don't forget to save the catalog with keys!!! .celestia-light-mocha-4/keys
Update
systemctl stop celestia-light
cd $HOME
rm -rf celestia-node
git clone https://github.com/celestiaorg/celestia-node && cd celestia-node
git checkout tags/v0.16.0
make build
make install
make cel-key
celestia version
#Semantic version: v0.16.0
#Commit: 6744f648649ebb5fee1b27faf7aca96ecf4519b2
# update config
celestia light config-update --p2p.network mocha
systemctl restart celestia-light && journalctl -u celestia-light -f -o cat
Node transfer
Please note that we do not necessarily need to change the keyring-test wallet Let's look at the most suitable option for saving the Node ID, assuming that the old server is working:
Start a new server and fully sync the Light
Stop Light on the new server and replace the two files in
/root/.celestia-light-mocha-4/keys/
Be sure to give the necessary rights
chmod 600 /root/.celestia-light-mocha-4/keys/*
Restart Light on the new server and wait for full synchronization
Stop the old server
Useful commands
Find out Light node id
# first, let's generate an authorization token
AUTH_TOKEN=$(celestia light auth admin --p2p.network mocha)
echo $AUTH_TOKEN
# we get the peerId of our node
curl -X POST \
-H "Authorization: Bearer $AUTH_TOKEN" \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":0,"method":"p2p.Info","params":[]}' \
http://localhost:26658
# another way to get Node ID
celestia p2p info --node.store ~/.celestia-light-mocha-4/
Working with wallets
# show wallet address
cel-key list --node.type light --keyring-backend test --p2p.network mocha
# check balance
celestia state balance --node.store ~/.celestia-light-mocha-4/
# restore wallet
cel-key add light_wallet --keyring-backend test --node.type light --recover --p2p.network mocha
Status
celestia header sync-state --node.store ~/.celestia-light-mocha-4/
Delete
systemctl stop celestia-light
systemctl disable celestia-light
rm /etc/systemd/system/celestia-light.service
systemctl daemon-reload
cd $HOME && \
rm -rf .celestia-light-mocha-4 .celestia-ap celestia-node && \
rm -rf $(which celestia)
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