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JW Node Services

Cardchain

Installation

Terminal window
# install go, if needed
cd $HOME
VER="1.19.3"
wget "https://golang.org/dl/go$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


# set vars
echo "export WALLET="wallet"" >> $HOME/.bash_profile
echo "export MONIKER="test"" >> $HOME/.bash_profile
echo "export CARDCHAIN_CHAIN_ID="cardtestnet-12"" >> $HOME/.bash_profile
echo "export CARDCHAIN_PORT="31"" >> $HOME/.bash_profile
source $HOME/.bash_profile


# download binary
cd $HOME
wget -O Cardchaind https://github.com/DecentralCardGame/Cardchain/releases/download/v0.16.0/Cardchaind
chmod +x Cardchaind
sudo mv Cardchaind /usr/local/bin


# config and init app
Cardchaind config node tcp://localhost:${CARDCHAIN_PORT}657
Cardchaind config keyring-backend os
Cardchaind config chain-id cardtestnet-12
Cardchaind init "test" --chain-id cardtestnet-12


# download genesis and addrbook
wget -O $HOME/.cardchaind/config/genesis.json https://server-4.itrocket.net/testnet/cardchain/genesis.json
wget -O $HOME/.cardchaind/config/addrbook.json  https://server-4.itrocket.net/testnet/cardchain/addrbook.json


# set seeds and peers
SEEDS="947aa14a9e6722df948d46b9e3ff24dd72920257@cardchain-testnet-seed.itrocket.net:31656"
PEERS="99dcfbba34316285fceea8feb0b644c4dc67c53b@cardchain-testnet-peer.itrocket.net:31656,86484b4d411e2cec602c88ae1262a39ab58ea470@207.180.249.47:26656,263bea65bcf39d1244d0d251b2f089c0b5c56a13@144.76.97.251:38656,443c0471d3bb10717c8e0df5b0171c87c1d6ed9d@142.132.152.46:22656,598cd9b372fa896dbaba72e15d30125399f425e9@161.97.171.120:26656,3db8323a132c4dee2e1896fd533787b8a23d95b2@194.163.174.151:26656,8fac860cb5ed5067cdf3943689a8c3964eadd262@207.244.253.244:39656,77aad2057be5289f44c4aa5e9df7c26b86038904@65.109.53.24:31656,8f665b8a8fb1a3c95fb43575a06b114d9ced4a98@84.247.138.148:26656,d0bb15daba08a7c84c45d8ee48daeadf42d08a6a@185.144.99.114:26656,2053e3c18c68e59b8b0f533d169b061bdcbddb62@65.21.56.125:26656"
sed -i -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*seeds *=.*/seeds = \"$SEEDS\"/}" \
       -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*persistent_peers *=.*/persistent_peers = \"$PEERS\"/}" $HOME/.cardchaind/config/config.toml


# set custom ports in app.toml
sed -i.bak -e "s%:1317%:${CARDCHAIN_PORT}317%g;
s%:8080%:${CARDCHAIN_PORT}080%g;
s%:9090%:${CARDCHAIN_PORT}090%g;
s%:9091%:${CARDCHAIN_PORT}091%g;
s%:8545%:${CARDCHAIN_PORT}545%g;
s%:8546%:${CARDCHAIN_PORT}546%g;
s%:6065%:${CARDCHAIN_PORT}065%g" $HOME/.cardchaind/config/app.toml


# set custom ports in config.toml file
sed -i.bak -e "s%:26658%:${CARDCHAIN_PORT}658%g;
s%:26657%:${CARDCHAIN_PORT}657%g;
s%:6060%:${CARDCHAIN_PORT}060%g;
s%:26656%:${CARDCHAIN_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${CARDCHAIN_PORT}656\"%;
s%:26660%:${CARDCHAIN_PORT}660%g" $HOME/.cardchaind/config/config.toml


# config pruning
sed -i -e "s/^pruning *=.*/pruning = \"custom\"/" $HOME/.cardchaind/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"100\"/" $HOME/.cardchaind/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"19\"/" $HOME/.cardchaind/config/app.toml


# set minimum gas price, enable prometheus and disable indexing
sed -i 's|minimum-gas-prices =.*|minimum-gas-prices = "0.0ubpf"|g' $HOME/.cardchaind/config/app.toml
sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.cardchaind/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.cardchaind/config/config.toml


# create service file
sudo tee /etc/systemd/system/Cardchaind.service > /dev/null <<EOF
[Unit]
Description=Cardchain node
After=network-online.target
[Service]
User=$USER
WorkingDirectory=$HOME/.cardchaind
ExecStart=$(which Cardchaind) start --home $HOME/.cardchaind
Restart=on-failure
RestartSec=5
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF


# reset and download snapshot
Cardchaind tendermint unsafe-reset-all --home $HOME/.cardchaind
curl https://server-4.itrocket.net/testnet/cardchain/cardchain_2025-02-22_3438335_snap.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.cardchaind


# enable and start service
sudo systemctl daemon-reload
sudo systemctl enable Cardchaind
sudo systemctl restart Cardchaind && sudo journalctl -u Cardchaind -fo cat

Create Wallet

Terminal window
# to create a new wallet, use the following command. don’t forget to save the mnemonic
Cardchaind keys add $WALLET


# to restore exexuting wallet, use the following command
Cardchaind keys add $WALLET --recover


# save wallet and validator address
WALLET_ADDRESS=$(Cardchaind keys show $WALLET -a)
VALOPER_ADDRESS=$(Cardchaind keys show $WALLET --bech val -a)
echo "export WALLET_ADDRESS="$WALLET_ADDRESS >> $HOME/.bash_profile
echo "export VALOPER_ADDRESS="$VALOPER_ADDRESS >> $HOME/.bash_profile
source $HOME/.bash_profile


# check sync status, once your node is fully synced, the output from above will print "false"
Cardchaind status 2>&1 | jq


# before creating a validator, you need to fund your wallet and check balance
Cardchaind query bank balances $WALLET_ADDRESS

Create Validator

Terminal window
Cardchaind tx staking create-validator \
--amount 1000000ubpf \
--from $WALLET \
--commission-rate 0.1 \
--commission-max-rate 0.2 \
--commission-max-change-rate 0.01 \
--min-self-delegation 1 \
--pubkey $(Cardchaind tendermint show-validator) \
--moniker "test" \
--identity "" \
--website "" \
--details "" \
--chain-id cardtestnet-12 \
--gas auto --gas-adjustment 1.5 \
-y