💾Node Installation

Medibloc Mainnet guide

EXPLORER

• Minimum hardware requirements:

Node Type	CPU	RAM	Storage
Mainnet	8	16GB	250GB

1) Auto_install script

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

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 21.03.24

cd $HOME && mkdir -p go/bin/
git clone https://github.com/medibloc/panacea-core
cd panacea-core
git checkout v2.2.0
make install

panacead version --long | grep -e commit -e version

• version: 2.2.0

• commit: 997c018fa069bb99c8e2c46a841aa3e5223067be

Initiation

panacead init STAVR_guide --chain-id=panacea-3
panacead config chain-id panacea-3

Create/recover wallet

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

Download Genesis

wget https://github.com/medibloc/panacea-mainnet/raw/master/panacea-3/genesis.json.gz
gzip -d genesis.json.gz && mv genesis.json ~/.panacea/config/

sha256sum $HOME/.panacea/config/genesis.json

• e8fa05ce0bbb021a7fc5bf0abd8b6c1840c983ef17d4a8d09ba2646b4abfee33

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

sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.1umed\"/;" ~/.panacea/config/app.toml
sed -i -e "s/^filter_peers *=.*/filter_peers = \"true\"/" $HOME/.panacea/config/config.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.panacea/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.panacea/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.panacea/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.panacea/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 10/g' $HOME/.panacea/config/config.toml

Pruning (optional)

pruning="custom"
pruning_keep_recent="1000"
pruning_keep_every="0"
pruning_interval="10"
sed -i -e "s/^pruning *=.*/pruning = \"$pruning\"/" $HOME/.panacea/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.panacea/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.panacea/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.panacea/config/app.toml

Indexer (optional)

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

Download addrbook

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

Create a service file

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

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

[Install]
WantedBy=multi-user.target
EOF

StateSync Medibloc Mainnet(⚠️Temporarily stopped⚠️)

SNAP_RPC=https://panacea.rpc.m.stavr.tech:443
LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 1000)); \
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/.panacea/config/config.toml
panacead tendermint unsafe-reset-all
wget -O $HOME/.panacea/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Medibloc/addrbook.json"
sudo systemctl restart panacead && journalctl -fu panacead -o cat

SnapShot Mainnet (⚠️Temporarily stopped⚠️)

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

Start

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

Create validator

panacead tx staking create-validator \
--commission-rate 0.1 \
--commission-max-rate 0.1 \
--commission-max-change-rate 0.1 \
--min-self-delegation "1" \
--amount 1000000udsm \
--pubkey $(panacead tendermint show-validator) \
--from <wallet> \
--moniker="STAVR_guide" \
--chain-id panacea-3 \
--gas 300000 \
--fees 30000umed \
--identity="" \
--website="" \
--details="" -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 panacead
sudo systemctl disable panacead
rm /etc/systemd/system/panacead.service
sudo systemctl daemon-reload
cd $HOME
rm -rf panacea-core
rm -rf .panacea
rm -rf $(which panacead)