Juno

Build and synchronize node from state-sync service

Prerequisites

• Ubuntu 20.04 LTS or newer

• Go 1.18.x or newer - Installation guide here.

• JSON processor jq - sudo apt install jq

• Essential Build Tools - sudo apt install build-essential

Video demonstrates steps described below.

Build Juno Node

git clone https://github.com/CosmosContracts/juno && cd juno
git checkout v20.0.0
make install

Initialize Juno Node

junod init myNode --chain-id juno-1
wget -O ${HOME}/.juno/config/addrbook.json https://files.chaintools.tech/chains/juno/addrbook.json
wget -O ${HOME}/.juno/config/genesis.json.gz https://files.chaintools.tech/chains/juno/genesis.json.gz
rm ${HOME}/.juno/config/genesis.json && gzip -d ${HOME}/.juno/config/genesis.json.gz

Configure state-sync

SNAP_RPC="https://rpc.juno.chaintools.tech:443"
SNAP_RPC2="https://rpc.juno.chaintools.tech:443"

LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 2000)); \
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_RPC2\"| ; \
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

Start Juno Node

junod start