💾Node Installation

C4E Mainnet guide

EXPLORER

• Approximate hardware requirements:

Node Type	CPU	RAM	Storage
Mainnet	8	16GB	250GB

1) Auto_install script

wget -O c4 https://raw.githubusercontent.com/111STAVR111/props/main/C4E/c4 && chmod +x c4 && ./c4

2) Manual installation

Preparing the server

sudo apt update && sudo apt upgrade -y
sudo apt install curl tar wget clang pkg-config libssl-dev jq build-essential bsdmainutils git make ncdu gcc git jq chrony liblz4-tool -y

GO 1.21.6

ver="1.21.6"
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

Build 16.09.24

cd $HOME && mkdir $HOME/go/bin/
git clone https://github.com/chain4energy/c4e-chain
cd c4e-chain
git checkout v1.4.1
make install

c4ed version --long | grep -e commit -e version

• version: 1.4.1

• commit: 6f5b1ed51ac51b73a4f56030ff6d53e1b5d9832a

Initiation

c4ed init STAVR_guide --chain-id=perun-1
c4ed config chain-id perun-1

Create/recover wallet

c4ed keys add <walletname>
           OR
c4ed keys add <walletname> --recover

Download Genesis

wget -O $HOME/.c4e-chain/config/genesis.json "https://raw.githubusercontent.com/111STAVR111/props/main/C4E/genesis.json"

sha256sum $HOME/.c4e-chain/config/genesis.json

• 6c736993a681a6759d3ec41550995fe04f48dd332d03375d879f3b464c6ceabf

Set up the minimum gas price and Peers/Seeds/Filter peers/MaxPeers

sed -i -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0uc4e\"/" $HOME/.c4e-chain/config/app.toml
sed -i -e "s/^filter_peers *=.*/filter_peers = \"true\"/" $HOME/.c4e-chain/config/config.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.c4e-chain/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.c4e-chain/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.c4e-chain/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.c4e-chain/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 50/g' $HOME/.c4e-chain/config/config.toml

Pruning (optional)

pruning="custom"
pruning_keep_recent="1000"
pruning_keep_every="0"
pruning_interval="100"
sed -i -e "s/^pruning *=.*/pruning = \"$pruning\"/" $HOME/.c4e-chain/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.c4e-chain/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.c4e-chain/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.c4e-chain/config/app.toml

Indexer (optional)

indexer="null" &&
sed -i -e "s/^indexer *=.*/indexer = \"$indexer\"/" $HOME/.c4e-chain/config/config.toml

Download addrbook

wget -O $HOME/.c4e-chain/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/C4E/addrbook.json"

Create a service file

sudo tee /etc/systemd/system/c4ed.service > /dev/null <<EOF
[Unit]
Description=c4e
After=network-online.target

[Service]
User=$USER
ExecStart=$(which c4ed) start
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

StateSync C4E Mainnet

SNAP_RPC=https://c4e.rpc.m.stavr.tech:443
peers="[e-mail]:17096"
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.c4e-chain/config/config.toml
LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 100)); \
TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)

echo $LATEST_HEIGHT $BLOCK_HEIGHT $TRUST_HASH

sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC,$SNAP_RPC\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"| ; \
s|^(seeds[[:space:]]+=[[:space:]]+).*$|\1\"\"|" $HOME/.c4e-chain/config/config.toml
c4ed tendermint unsafe-reset-all --home /root/.c4e-chain --keep-addr-book
sudo systemctl restart c4ed && journalctl -u c4ed -f -o cat

SnapShot Mainnet updated every 5 hours

cd $HOME
apt install lz4
sudo systemctl stop c4ed
cp $HOME/.c4e-chain/data/priv_validator_state.json $HOME/.c4e-chain/priv_validator_state.json.backup
rm -rf $HOME/.c4e-chain/data
curl -o - -L https://c4e.snapshot.stavr.tech/c4e-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.c4e-chain --strip-components 2
mv $HOME/.c4e-chain/priv_validator_state.json.backup $HOME/.c4e-chain/data/priv_validator_state.json
wget -O $HOME/.c4e-chain/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/C4E/addrbook.json"
sudo systemctl restart c4ed && journalctl -u c4ed -f -o cat

Start

sudo systemctl daemon-reload
sudo systemctl enable c4ed
sudo systemctl restart c4ed && sudo journalctl -fu c4ed -o cat

Create validator

c4ed tx staking create-validator \
  --amount 1000000uc4e \
  --from <walletName> \
  --commission-max-change-rate "0.1" \
  --commission-max-rate "0.2" \
  --commission-rate "0.1" \
  --min-self-delegation "1" \
  --pubkey  $(c4ed tendermint show-validator) \
  --moniker STAVR_guide \
  --chain-id perun-1 \
  --identity="" \
  --details="" \
  --website="" -y

🧩Services and Tools🧩

Monitoring

You can set up your node status alarm here - Monitoring

Security

You can create secure management of your wallet and your node by following this links.

TMKMS Wallet Security

Delete node

sudo systemctl stop c4ed
sudo systemctl disable c4ed
rm /etc/systemd/system/c4ed.service
sudo systemctl daemon-reload
cd $HOME
rm -rf c4e-chain
rm -rf .c4e-chain
rm -rf $(which c4ed)