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Installation Testnet Airchains

Guide Installation Airchains

Binary Info

github link: https://github.com/airchains-network/junction
app name: junctiond
version:
cosmos sdk version:
git commit:
  • Update and Install dependencies: 
    sudo apt update
sudo apt upgrade -y
sudo apt install git build-essential curl jq -y
  • Installing Go: 
    ver="1.21.5"
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
# go version 1.21.5 ...
  • Install cosmovisor v1.5.0 ( recommended ): 
    go install cosmossdk.io/tools/cosmovisor/cmd/[email protected]
  • Install app: 
    cd $HOME
wget -O junctiond https://github.com/airchains-network/junction/releases/download/v0.1.0/junctiond &&\
chmod +x junctiond &&\
if [ ! -d "$HOME/go/bin" ]; then
  mkdir -p $HOME/go/bin
fi
mv $HOME/junctiond $HOME/go/bin
  • Initialize node:
    change "NODE_NAME" according to your moniker / node name 
    junctiond init NODE_NAME --chain-id junction --home $HOME/.junction
  • Config node ( optional ):
    this will change your client.toml value 
    junctiond config chain-id junction
junctiond config keyring-backend test
junctiond config node tcp://localhost:26657
  • Configure cosmovisor: 
    cd $HOME
export DAEMON_NAME=junctiond
export DAEMON_HOME=$HOME/.junction
cosmovisor init $(which junctiond)
  • Download genesis and addrbook file: 
    wget -O $HOME/.junction/config/genesis.json "https://snapshot-de-1.genznodes.dev/archains/genesis.json"
wget -O $HOME/.junction/config/addrbook.json "https://snapshot-de-1.genznodes.dev/archains/addrbook.json"
  • Using our node snapshot / statesync ( if needed )
    See detail in page
    snapshot page
    statesync page
  • Set service files: 
    sudo tee /etc/systemd/system/junctiond.service > /dev/null <<EOF
[Unit]
Description="Airchains daemon node"
After=network-online.target

[Service]
User=$USER
Environment="DAEMON_NAME=junctiond"
Environment="DAEMON_HOME=$HOME/.junction"
Environment="DAEMON_ALLOW_DOWNLOAD_BINARIES=false"
Environment="DAEMON_RESTART_AFTER_UPGRADE=true"
Environment="UNSAFE_SKIP_BACKUP=true"
Environment="DAEMON_PREUPGRADE_MAX_RETRIES=0"
Environment="DAEMON_LOG_BUFFER_SIZE=512"
ExecStart=$(which cosmovisor) run start
Restart=always
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF
  • Launch nodes: 
    sudo systemctl daemon-reload
sudo systemctl enable junctiond
sudo systemctl start junctiond
journalctl -fu junctiond -o cat

    • Troubleshooting

    1. Error: binary not present

  • If you see logs like this, pay attention to [UPGRADE_NAME] :
    Error: binary not present
stat $HOME/.junction/cosmovisor/upgrades/[UPGRADE_NAME]/bin/junctiond: no such file or directory"
junctiond.service: Main process exited, code=exited, status=1/FAILURE
junctiond.service: Failed with result 'exit-code'.
  • Fix with:
    Make sure you change [UPGRADE_NAME] according to your logs
    export DAEMON_NAME=junctiond
export DAEMON_HOME=$HOME/.junction
cosmovisor add-upgrade [UPGRADE_NAME] $(which junctiond)
  • Check node logs:
    journalctl -fu junctiond -o cat