Skip to content
JW Node Services

Airchains

Installation

Terminal window
# install dependencies, if needed
sudo apt update && sudo apt upgrade -y
sudo apt install curl git wget htop tmux build-essential jq make lz4 gcc unzip -y
Terminal window
# install go, if needed
cd $HOME
VER="1.21.6"
wget "https://golang.org/dl/go$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"
[ ! -f ~/.bash_profile ] && touch ~/.bash_profile
echo "export PATH=$PATH:/usr/local/go/bin:~/go/bin" >> ~/.bash_profile
source $HOME/.bash_profile
[ ! -d ~/go/bin ] && mkdir -p ~/go/bin


# set vars
echo "export WALLET="wallet"" >> $HOME/.bash_profile
echo "export MONIKER="test"" >> $HOME/.bash_profile
echo "export AIRCHAIN_CHAIN_ID="junction"" >> $HOME/.bash_profile
echo "export AIRCHAIN_PORT="19"" >> $HOME/.bash_profile
source $HOME/.bash_profile


# download binary
cd $HOME
wget -O junctiond https://github.com/airchains-network/junction/releases/download/v0.2.0/junctiond-linux-amd64
chmod +x junctiond
mv junctiond $HOME/go/bin/


# config and init app
junctiond init $MONIKER --chain-id $AIRCHAIN_CHAIN_ID
sed -i -e "s|^node *=.*|node = \"tcp://localhost:${AIRCHAIN_PORT}657\"|" $HOME/.junction/config/client.toml


# download genesis and addrbook
wget -O $HOME/.junction/config/genesis.json https://server-4.itrocket.net/testnet/airchains/genesis.json
wget -O $HOME/.junction/config/addrbook.json  https://server-4.itrocket.net/testnet/airchains/addrbook.json


# set seeds and peers
SEEDS="04e2fdd6ec8f23729f24245171eaceae5219aa91@airchains-testnet-seed.itrocket.net:19656"
PEERS="e929f77cfe4cd7d51433f438d3b764937e799313@airchains-testnet-peer.itrocket.net:19656,f2f47fefc40d2311e5578730d95a06ce2f3b7ee7@185.232.70.33:26656,c70f853dba012ee6b6f50070657ca28dbd12daf4@65.108.0.88:13056,5717aadf2f21e223012a1ab27e21307f510037c3@[2a01:4f8:262:121c::2]:13756,859485b13c2d8ab3888ffc11d1c506d78f681317@5.9.116.21:26756,a9ee14aac08cd57715086fd6759371cc434b4bcd@[2a01:4f8:171:325::2]:26656,5880ddf4518b061c111ae6bf07b1ef76ef2a42af@158.220.100.154:26656,2cac83c991358faf89f0c1bb40d94563609e00d9@65.109.84.33:26756,cae71ddb032ace7b8b85817954fdf1dbfc77f362@213.133.108.22:26656,8b2a63f074a37bbfebd82cb78a4893936e1dfd61@37.27.132.57:19656,d5ded9ed366f251a59c85f84ed1fa825cceb0d97@[2a01:4f8:221:158e::2]:13656"
sed -i -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*seeds *=.*/seeds = \"$SEEDS\"/}" \
       -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*persistent_peers *=.*/persistent_peers = \"$PEERS\"/}" $HOME/.junction/config/config.toml


# set custom ports in app.toml
sed -i.bak -e "s%:1317%:${AIRCHAIN_PORT}317%g;
s%:8080%:${AIRCHAIN_PORT}080%g;
s%:9090%:${AIRCHAIN_PORT}090%g;
s%:9091%:${AIRCHAIN_PORT}091%g;
s%:8545%:${AIRCHAIN_PORT}545%g;
s%:8546%:${AIRCHAIN_PORT}546%g;
s%:6065%:${AIRCHAIN_PORT}065%g" $HOME/.junction/config/app.toml


# set custom ports in config.toml file
sed -i.bak -e "s%:26658%:${AIRCHAIN_PORT}658%g;
s%:26657%:${AIRCHAIN_PORT}657%g;
s%:6060%:${AIRCHAIN_PORT}060%g;
s%:26656%:${AIRCHAIN_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${AIRCHAIN_PORT}656\"%;
s%:26660%:${AIRCHAIN_PORT}660%g" $HOME/.junction/config/config.toml


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


# set minimum gas price, enable prometheus and disable indexing
sed -i 's|minimum-gas-prices =.*|minimum-gas-prices = "0.001amf"|g' $HOME/.junction/config/app.toml
sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.junction/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.junction/config/config.toml


# create service file
sudo tee /etc/systemd/system/junctiond.service > /dev/null <<EOF
[Unit]
Description=Airchains node
After=network-online.target
[Service]
User=$USER
WorkingDirectory=$HOME/.junction
ExecStart=$(which junctiond) start --home $HOME/.junction
Restart=on-failure
RestartSec=5
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF


# reset and download snapshot
junctiond tendermint unsafe-reset-all --home $HOME/.junction
curl https://server-4.itrocket.net/testnet/airchains/airchains_2025-02-07_4036307_snap.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.junction


# enable and start service
sudo systemctl daemon-reload
sudo systemctl enable junctiond
sudo systemctl restart junctiond && sudo journalctl -u junctiond -fo cat

Create Wallet

Terminal window
# to create a new wallet, use the following command. don’t forget to save the mnemonic
junctiond keys add $WALLET


# to restore exexuting wallet, use the following command
junctiond keys add $WALLET --recover


# save wallet and validator address
WALLET_ADDRESS=$(junctiond keys show $WALLET -a)
VALOPER_ADDRESS=$(junctiond keys show $WALLET --bech val -a)
echo "export WALLET_ADDRESS="$WALLET_ADDRESS >> $HOME/.bash_profile
echo "export VALOPER_ADDRESS="$VALOPER_ADDRESS >> $HOME/.bash_profile
source $HOME/.bash_profile


# check sync status, once your node is fully synced, the output from above will print "false"
junctiond status 2>&1 | jq


# before creating a validator, you need to fund your wallet and check balance
junctiond query bank balances $WALLET_ADDRESS

Create Validator

Terminal window
cd $HOME
# Create validator.json file
echo "{\"pubkey\":{\"@type\":\"/cosmos.crypto.ed25519.PubKey\",\"key\":\"$(junctiond comet show-validator | grep -Po '\"key\":\s*\"\K[^"]*')\"},
    \"amount\": \"1000000amf\",
    \"moniker\": \"test\",
    \"identity\": \"\",
    \"website\": \"\",
    \"security\": \"\",
    \"details\": \"\",
    \"commission-rate\": \"0.1\",
    \"commission-max-rate\": \"0.2\",
    \"commission-max-change-rate\": \"0.01\",
    \"min-self-delegation\": \"1\"
}" > validator.json
# Create a validator using the JSON configuration
junctiond tx staking create-validator validator.json \
    --from $WALLET \
    --chain-id junction \
  --fees 200amf