⚙️Installation

Hardware	Minimum requirement
CPU	4
RAM	8+ GB
Storage	400 GB SSD

Manual Installation

This section contains a list of commands to install the node in manual mode.

Server Preparation

apt update && apt upgrade -y
apt install curl iptables build-essential git wget jq make gcc nano tmux htop nvme-cli pkg-config libssl-dev libleveldb-dev tar clang bsdmainutils ncdu unzip libleveldb-dev -y

Install GO

ver="1.20.3"
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

Download and build binaries

wget https://github.com/airchains-network/junction/releases/download/v0.1.0/junctiond
chmod +x junctiond
sudo mv junctiond /usr/local/bin

Config chain and Init

Moniker - change to your moniker name

junctiond config chain-id junction
junctiond init "Moniker" --chain-id junction

Download Genesis and Addrbook

sudo wget -O $HOME/.junction/config/genesis.json https://testnet-files.suntzu.dev/download/testnet/airchains/genesis.json
sudo wget -O $HOME/.junction/config/addrbook.json https://testnet-files.suntzu.dev/download/testnet/airchains/addrbook.json

sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.05amf\"/;" ~/.junction/config/app.toml

Config Pruning

pruning="custom" && \
pruning_keep_recent="100" && \
pruning_keep_every="0" && \
pruning_interval="10" && \
sed -i -e "s/^pruning *=.*/pruning = \"$pruning\"/" $HOME/.junction/config/app.toml && \
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.junction/config/app.toml && \
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.junction/config/app.toml && \
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.junction/config/app.toml

Set seeds and peers

PEERS=$(curl -sS https://junction-rpc.dymion.cloud/net_info | \
jq -r '.result.peers[] | "\(.node_info.id)@\(.remote_ip):\(.node_info.listen_addr)"' | \
awk -F ':' '{printf "%s:%s%s", $1, $(NF), NR==NF?"":","}')
echo "$PEERS"

sed -i 's|^persistent_peers *=.*|persistent_peers = "'$PEERS'"|' $HOME/.junction/config/config.toml

Change port

CUSTOM_PORT=113
sed -i.bak -e "s%:1317%:${CUSTOM_PORT}17%g;
s%:8080%:${CUSTOM_PORT}80%g;
s%:9090%:${CUSTOM_PORT}90%g;
s%:9091%:${CUSTOM_PORT}91%g;
s%:8545%:${CUSTOM_PORT}45%g;
s%:8546%:${CUSTOM_PORT}46%g;
s%:6065%:${CUSTOM_PORT}65%g" $HOME/.junction/config/app.toml

# set custom ports in config.toml file
sed -i.bak -e "s%:26658%:${CUSTOM_PORT}58%g;
s%:26657%:${CUSTOM_PORT}57%g;
s%:6060%:${CUSTOM_PORT}60%g;
s%:26656%:${CUSTOM_PORT}56%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${CUSTOM_PORT}56\"%;
s%:26660%:${CUSTOM_PORT}60%g" $HOME/.junction/config/config.toml

Snapshot

junctiond tendermint unsafe-reset-all --home ~/.junction/ --keep-addr-book
curl https://testnet-files.suntzu.dev/download/testnet/airchains/airchains-snapshot.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.junction

create service file

sudo tee /etc/systemd/system/junctiond.service > /dev/null <<EOF
[Unit]
Description=junction
After=network-online.target
[Service]
User=$USER
ExecStart=$(which junctiond) start
Restart=always
RestartSec=3
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF
sudo systemctl daemon-reload
sudo systemctl enable junctiond

enable and start service

sudo systemctl daemon-reload
sudo systemctl enable junctiond
sudo systemctl restart junctiond && sudo journalctl -u junctiond -f

Log

sudo journalctl -u junctiond -f --no-hostname -o cat