# Installation

### Manual Installation <a href="#installation" id="installation"></a>

Official DocumentationRecommended Hardware: 4 Cores, 8GB RAM, 200GB of storage (NVME)

```bash
# 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
```

Node NameWalletPort

```bash
# 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/v0.1.0/junctiond
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://testnet-files.itrocket.net/airchains/genesis.json
wget -O $HOME/.junction/config/addrbook.json https://testnet-files.itrocket.net/airchains/addrbook.json

# set seeds and peers
SEEDS="04e2fdd6ec8f23729f24245171eaceae5219aa91@airchains-testnet-seed.itrocket.net:19656"
PEERS="47f61921b54a652ca5241e2a7fc4ed8663091e89@airchains-testnet-peer.itrocket.net:19656,e78a440c57576f3743e6aa9db00438462980927e@5.161.199.115:26656,747b20b00224128bb3a3022cfa557fa105a8e41d@84.247.140.127:43456,f786dcc80601ddd33ba98c609795083ba418d740@158.220.119.11:43456,0b1159b05e940a611b275fe0006070439e5b6e69@[2a03:cfc0:8000:13::b910:277f]:13756,c8f6b1a795a6d9cd2ec39faf277163a9711fc81b@38.242.194.19:43456,552d2a5c3d9889444f123d740a20237c89711109@109.199.96.143:43456,cc27f4e54a78b950adaf46e5413f92f5d53d2212@209.126.86.186:43456,f5b69a02abeb3340ccd266f049ed6aabc7c0ea88@94.72.114.150:43456,43ab9af9fabe523a0a8794ae779100c50d1383e6@5.189.142.177:17656,db38d672f66df4de01b26e1fa97e1632fbfb1bdf@173.249.57.190:26656"
sed -i -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$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 = \"50\"/" $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
if curl -s --head curl https://testnet-files.itrocket.net/airchains/snap_airchains.tar.lz4 | head -n 1 | grep "200" > /dev/null; then
  curl https://testnet-files.itrocket.net/airchains/snap_airchains.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.junction
    else
  echo no have snap
fi

# enable and start service
sudo systemctl daemon-reload
sudo systemctl enable junctiond
sudo systemctl restart junctiond && sudo journalctl -u junctiond -f
```

### Automatic Installation <a href="#auto-installation" id="auto-installation"></a>

pruning: custom: 100/0/10 | indexer: null

```bash
source <(curl -s https://itrocket.net/api/testnet/airchains/autoinstall/)
```

### Create wallet <a href="#create-wallet" id="create-wallet"></a>

```bash
# 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 <a href="#create-validator" id="create-validator"></a>

MonikerIdentityDetailsAmount, amfCommission rateCommission max rateCommission max change rateWebsite

```bash
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\": \"I love blockchain ❤️\",
    \"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 \
	
```

### Monitoring <a href="#monitoring" id="monitoring"></a>

If you want to have set up a monitoring and alert system use [our cosmos nodes monitoring guide with tenderduty](https://teletype.in/@itrocket/bdJAHvC_q8h)

### Security <a href="#security" id="security"></a>

To protect you keys please don\`t share your privkey, mnemonic and follow a basic security rules

#### Set up ssh keys for authentication <a href="#ssh" id="ssh"></a>

You can use this [guide](https://www.digitalocean.com/community/tutorials/how-to-set-up-ssh-keys-on-ubuntu-20-04) to configure ssh authentication and disable password authentication on your server

#### Firewall security <a href="#firewall" id="firewall"></a>

Set the default to allow outgoing connections, deny all incoming, allow ssh and node p2p port

```bash
sudo ufw default allow outgoing 
sudo ufw default deny incoming 
sudo ufw allow ssh/tcp 
sudo ufw allow ${AIRCHAIN_PORT}656/tcp
sudo ufw enable
```

### Delete node <a href="#delete" id="delete"></a>

```bash
sudo systemctl stop junctiond
sudo systemctl disable junctiond
sudo rm -rf /etc/systemd/system/junctiond.service
sudo rm $(which junctiond)
sudo rm -rf $HOME/.junction
sed -i "/AIRCHAIN_/d" $HOME/.bash_profile
```
