Installation

Chain ID	Latest Version Tag	Custom Port
junction	v0.1.0	157

Validator Name Configuration

To configure your validator name, replace the placeholder owlstake with your desired validator name.

MONIKER="owlstake"

Dependency Installation Process

System Update and Build Tool Installation

sudo apt -q update
sudo apt -qy install curl git jq lz4 build-essential
sudo apt -qy upgrade

Install Go

sudo rm -rf /usr/local/go
curl -Ls https://go.dev/dl/go1.22.3.linux-amd64.tar.gz | sudo tar -xzf - -C /usr/local
eval $(echo 'export PATH=$PATH:/usr/local/go/bin' | sudo tee /etc/profile.d/golang.sh)
eval $(echo 'export PATH=$PATH:$HOME/go/bin' | tee -a $HOME/.profile)

Download and build binaries

# Clone project repository
cd $HOME
rm -rf junction
git clone https://github.com/airchains-network/junction
cd junction
git checkout v0.1.0

# Build binaries
make build

# Prepare binaries for Cosmovisor (Optional)
mkdir -p $HOME/.junction/cosmovisor/genesis/bin
mv build/junctiond $HOME/.junction/cosmovisor/genesis/bin/
rm -rf build

# Create application symlinks (Optional)
sudo ln -s $HOME/.junction/cosmovisor/genesis $HOME/.junction/cosmovisor/current -f
sudo ln -s $HOME/.junction/cosmovisor/current/bin/junctiond /usr/local/bin/junctiond -f

Install Cosmovisor and create a service (Option 1)

# Download and install Cosmovisor 
go install cosmossdk.io/tools/cosmovisor/cmd/[email protected]

# Create service
sudo tee /etc/systemd/system/junctiond.service > /dev/null << EOF
[Unit]
Description=airchain node service
After=network-online.target

[Service]
User=$USER
ExecStart=$(which cosmovisor) run start
Restart=on-failure
RestartSec=10
LimitNOFILE=65535
Environment="DAEMON_HOME=$HOME/.junction"
Environment="DAEMON_NAME=junctiond"
Environment="UNSAFE_SKIP_BACKUP=true"
Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:$HOME/.junction/cosmovisor/current/bin"

[Install]
WantedBy=multi-user.target
EOF
sudo systemctl daemon-reload
sudo systemctl enable junctiond

Create a standard service (Option 2)

# Create service
sudo tee /etc/systemd/system/junctiond.service > /dev/null << EOF
[Unit]
Description=airchain node service
After=network-online.target

[Service]
Type=simple
User=$USER
ExecStart=$(which junctiond) start
Restart=on-failure
RestartSec=10
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF
sudo systemctl daemon-reload
sudo systemctl enable junctiond

Initialize the node

# Set node configuration
junctiond config chain-id junction
junctiond config keyring-backend test
### (Optional)
junctiond config node tcp://localhost:15757

# Initialize the node
junctiond init $MONIKER --chain-id junction

# Download genesis and addrbook
curl -Ls https://snapshots.owlstake.com/junction/genesis.json > $HOME/.junction/config/genesis.json
curl -Ls https://snapshots.owlstake.com/junction/addrbook.json > $HOME/.junction/config/addrbook.json

# Add seeds
sed -i -e "s|^seeds *=.*|seeds = \"[email protected]:19656\"|" $HOME/.junction/config/config.toml
# Set minimum gas price
sed -i -e "s|^minimum-gas-prices *=.*|minimum-gas-prices = \"0.001amf\"|" $HOME/.junction/config/app.toml

# Set pruning
sed -i \
  -e 's|^pruning *=.*|pruning = "custom"|' \
  -e 's|^pruning-keep-recent *=.*|pruning-keep-recent = "100"|' \
  -e 's|^pruning-keep-every *=.*|pruning-keep-every = "0"|' \
  -e 's|^pruning-interval *=.*|pruning-interval = "19"|' \
  $HOME/.junction/config/app.toml

# Set custom ports (Optional)
sed -i -e "s%^proxy_app = \"tcp://127.0.0.1:26658\"%proxy_app = \"tcp://127.0.0.1:15758\"%; s%^laddr = \"tcp://127.0.0.1:26657\"%laddr = \"tcp://127.0.0.1:15757\"%; s%^pprof_laddr = \"localhost:6060\"%pprof_laddr = \"localhost:15760\"%; s%^laddr = \"tcp://0.0.0.0:26656\"%laddr = \"tcp://0.0.0.0:15756\"%; s%^prometheus_listen_addr = \":26660\"%prometheus_listen_addr = \":15766\"%" $HOME/.junction/config/config.toml
sed -i -e "s%^address = \"tcp://0.0.0.0:1317\"%address = \"tcp://0.0.0.0:15717\"%; s%^address = \":8080\"%address = \":15780\"%; s%^address = \"0.0.0.0:9090\"%address = \"0.0.0.0:15790\"%; s%^address = \"0.0.0.0:9091\"%address = \"0.0.0.0:15791\"%; s%:8545%:15745%; s%:8546%:15746%; s%:6065%:15765%" $HOME/.junction/config/app.toml

Download latest chain snapshot

curl -L https://snapshots.owlstake.com/junction/snapshot_latest.tar.lz4 | tar -I lz4 -xf - -C $HOME/.junction
[[ -f $HOME/.junction/data/upgrade-info.json ]] && cp $HOME/.junction/data/upgrade-info.json $HOME/.junction/cosmovisor/genesis/upgrade-info.json

Start service and check the logs

sudo systemctl start junctiond && sudo journalctl -u junctiond -f --no-hostname -o cat