💾Node Installation

Juno Testnet guide

EXPLORER

• Minimum hardware requirements:

Node Type	CPU	RAM	Storage
Testnet	8	16GB	250GB

1) Auto_install script

wget -O juno-t https://raw.githubusercontent.com/111STAVR111/props/main/Juno/Testnet/juno-t && chmod +x juno-t && ./juno-t

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 25.02.25

cd $HOME && mkdir $HOME/go/bin/
git clone https://github.com/CosmosContracts/juno juno
cd juno
git checkout v28.0.1
make install

junod version --long | grep -e version -e commit

• version: v28.0.1

• commit: 75bb6c682de04f294cf2793d41f23c90f2d9c068

Initiation

junod init STAVR_guide --chain-id=uni-6
junod config chain-id uni-6

Create/recover wallet

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

Download Genesis

wget -O $HOME/.juno/config/genesis.json "https://raw.githubusercontent.com/111STAVR111/props/main/Juno/Testnet/genesis.json"

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

• 4c90e8bfce9b7fab824b923cbb7bdddf276f1040f3651fdb5304a4289147ea90

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

sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0ibc/C4CFF46FD6DE35CA4CF4CE031E643C8FDC9BA4B99AE598E9B0ED98FE3A2319F9,0ujuno\"/;" ~/.juno/config/app.toml
sed -i -e "s/^filter_peers *=.*/filter_peers = \"true\"/" $HOME/.juno/config/config.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.juno/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.juno/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.juno/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.juno/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 50/g' $HOME/.juno/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\"/" $HOME/.juno/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.juno/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.juno/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.juno/config/app.toml

Indexer (optional)

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

Download addrbook

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

Create a service file

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

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

[Install]
WantedBy=multi-user.target
EOF

StateSync juno Testnet (Temporarily stopped)

SNAP_RPC=https://juno.rpc.t.stavr.tech:443
PEERS="[e-mail]:1166"
sed -i.bak -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.juno/config/config.toml
LATEST_HEIGHT=$(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/.juno/config/config.toml
junod tendermint unsafe-reset-all --home $HOME/.juno
sed -i -e "s/^snapshot-interval *=.*/snapshot-interval = \"1500\"/" $HOME/.juno/config/app.toml
curl -o - -L http://juno-t.wasm.stavr.tech:1021/wasm-junot.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.juno/ --strip-components 2
wget -O $HOME/.juno/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Juno/Testnet/addrbook.json"
sudo systemctl restart junod && journalctl -u junod -f -o cat

SnapShot Testnet updated every 5 hours (Temporarily stopped)

cd $HOME
snap install lz4
sudo systemctl stop junod
cp $HOME/.juno/data/priv_validator_state.json $HOME/.juno/priv_validator_state.json.backup
rm -rf $HOME/.juno/data
curl -o - -L http://junot.snapshot.stavr.tech:1030/junot/junot-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.juno --strip-components 2
curl -o - -L http://juno-t.wasm.stavr.tech:1021/wasm-junot.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.juno/ --strip-components 2
mv $HOME/.juno/priv_validator_state.json.backup $HOME/.juno/data/priv_validator_state.json
wget -O $HOME/.juno/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Juno/Testnet/addrbook.json"
sudo systemctl restart junod && journalctl -u junod -f -o cat

Start

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

Create validator

junod tx staking create-validator \
--commission-rate 0.1 \
--commission-max-rate 0.1 \
--commission-max-change-rate 0.1 \
--min-self-delegation "1" \
--amount 1000000ujuno \
--pubkey $(junod tendermint show-validator) \
--from <wallet> \
--moniker="STAVR_guide" \
--chain-id uni-6 \
--gas 350000 \
--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 junod
sudo systemctl disable junod
rm /etc/systemd/system/junod.service
sudo systemctl daemon-reload
cd $HOME
rm -rf juno
rm -rf .juno
rm -rf $(which junod)