How to join MUN Blockchain

Infrastructure

**Recommended configuration:**
- Number of CPUs: 4
- Memory: 16GB
- OS: Ubuntu 22.04 LTS
- Allow all incoming connections from TCP port 26656 and 26657
- Static IP address
- Min. 500 GB HD (SSD)

Installing prerequisites

sudo apt update
sudo apt upgrade -y
sudo apt install build-essential jq -y

Install Golang:

Install latest go version https://golang.org/doc/install

wget -q -O - https://raw.githubusercontent.com/canha/golang-tools-install-script/master/goinstall.sh | bash -s -- --version 1.18
source ~/.profile

To verify that Golang installed

go version

// Should return go version go1.18 linux/amd64

Clone repository

git clone https://github.com/munblockchain/mun
cd mun

Install the executables

sudo rm -rf ~/.mun
go mod tidy
make install

clear

mkdir -p ~/.mun/upgrade_manager/upgrades
mkdir -p ~/.mun/upgrade_manager/genesis/bin

Symlink genesis binary to upgrade

cp $(which mund) ~/.mun/upgrade_manager/genesis/bin
sudo cp $(which mund-manager) /usr/bin

Initialize the validator with a moniker name (Example moniker: solid-moon-rock)

mund init [moniker_name] --chain-id testmun

Add a new wallet address, store seeds and buy TMUN to it.

mund keys add [wallet_name] --keyring-backend test

Important: Backup your priv_validator_key.json file (Make a copy and download it to your local machine) and also copy the contents to your password manager with:

cat $HOME/.mun/config/priv_validator_key.json

then copy the content starting with {... and ending with }} into your password manager (You should use keepassxc.org)

Fetch genesis.json from genesis node

curl --tlsv1 https://node1.mun.money/genesis? | jq ".result.genesis" > ~/.mun/config/genesis.json

Update seed in config.toml to make p2p connection

nano ~/.mun/config/config.toml
seeds = "XXXX"

Please ask in our Discord for the seeds to replace XXXX! Join our Discord: https://discord.gg/mun

Replace stake to TMUN

sed -i 's/stake/utmun/g' ~/.mun/config/genesis.json

Create the service file "/etc/systemd/system/mund.service" with the following content

sudo nano /etc/systemd/system/mund.service

Paste following content(*Please make sure to use correct name of user, group and DAEMON_HOME path at the below.)

[Unit]
Description=mund
Requires=network-online.target
After=network-online.target

[Service]
Restart=on-failure
RestartSec=3
User=root
Group=root
Environment=DAEMON_NAME=mund
Environment=DAEMON_HOME=/root/.mun
Environment=DAEMON_ALLOW_DOWNLOAD_BINARIES=on
Environment=DAEMON_RESTART_AFTER_UPGRADE=on
PermissionsStartOnly=true
ExecStart=/usr/bin/mund-manager start --pruning="nothing" --rpc.laddr "tcp://0.0.0.0:26657"
StandardOutput=file:/var/log/mund/mund.log
StandardError=file:/var/log/mund/mund_error.log
ExecReload=/bin/kill -HUP $MAINPID
KillSignal=SIGTERM
LimitNOFILE=4096

[Install]
WantedBy=multi-user.target

Tips

• How to get user and group name

whoami

• How to get DAEMON_HOME path

cd ~/.mun
pwd

Create log files and starts running the node

make log-files

Enable and start mund node service

sudo systemctl enable mund
sudo systemctl start mund && journalctl -u mund -f -o cat

You can now logout from your ssh. You ccan verify if your node is running properly

mund status

You should wait until the node gets fully synchronized with other nodes. You can cross check with the genesis node by visiting https://node1.mun.money/status and check the latest block height. You can also check your node status through this link http://[Your_Node_IP]:26657/status.

Once you are fully synced and after you got your 100K TMUN, stake it and become a validator:

mund tx staking create-validator --from [wallet_name] --moniker [moniker_name] --pubkey $(mund tendermint show-validator) --chain-id testmun --keyring-backend test --amount 100000000000utmun --commission-max-change-rate 0.01 --commission-max-rate 0.2 --commission-rate 0.1 --min-self-delegation 1 --fees 20000utmun -y

Useful command if your node is jailed (Please find out why you got jailed before running it)

mund tx slashing unjail --from XXXXX --chain-id testmun --keyring-backend test