💠Airchains

The Modular zk-Rollup framework

Public Endpoints

https://airchains-testnet-rpc.validator247.com/

https://airchains-testnet-api.validator247.com/

Explorer

https://explorer.validator247.com/airchains-testnet/staking

Installation guide

Make sure you have the latest Go build and system components installed

Download the source files:

wget https://github.com/ignite/cli/releases/download/v0.27.1/ignite_0.27.1_linux_amd64.tar.gz

Modify file permissions:

chmod +x ignite_0.27.1_linux_amd64.tar.gz

Extract the TAR file:

tar -xvf ignite_0.27.1_linux_amd64.tar.gz

Move the binary:

sudo mv ignite /usr/local/bin

Verify installation:

ignite version

Set up environment variables:

export PATH=$PATH:/usr/local/go/bin

Running a Full Node

Download binary

wget https://github.com/airchains-network/junction/releases/download/v0.1.0/junctiond

Make the binary executable

chmod +x junctiond

Move the binary to a system-wide directory

sudo mv junctiond /usr/local/bin

Initialize the Node with the Moniker

junctiond init <moniker>

Update Genesis Configuration

wget https://github.com/airchains-network/junction/releases/download/v0.1.0/genesis.json

Replace the Existing Genesis File

cp genesis.json ~/.junction/config/genesis.json

Update Configuration:

Run the open configuration command

nano ~/.junction/config/config.toml 	

Replace peer

peers="1f0eada58b83f32ac7ba0ff704e15732ae2a25c4@2a01:43456,[email protected]:63656,[email protected]:38656,[email protected]:13756,[email protected]:43456,fe51d4777e7ad2b4d93c3a096761a31966c65c64@2a0a:26656,[email protected]:43456,[email protected]:26656,[email protected]:43456,[email protected]:43456,[email protected]:26656,[email protected]:26656”

Seeds

seeds="[email protected]:26656"

Set Mini Gas

sed -i 's|^minimum-gas-prices *=.*|minimum-gas-prices = "0.00025amf"|g' $HOME/.junction//config/app.toml

create service

sudo tee /etc/systemd/system/junctiond.service > /dev/null << EOF
[Unit]
Description=airchains node service
After=network-online.target
[Service]
User=$USER
ExecStart=/usr/local/bin/junctiond start
Restart=on-failure
RestartSec=10
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF

sudo systemctl daemon-reload
sudo systemctl enable junctiond

State Sync

sudo systemctl stop junctiond

SNAP_RPC="https://airchains-testnet-rpc.validator247.com:443"

cp $HOME/.junction/data/priv_validator_state.json $HOME/.junction/priv_validator_state.json.backup
junctiond tendermint unsafe-reset-all --home ~/.warden/ --keep-addr-book

LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 2000)); \
TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)
echo $LATEST_HEIGHT $BLOCK_HEIGHT $TRUST_HASH

sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC,$SNAP_RPC\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"|" ~/.junction/config/config.toml
more ~/.junction/config/config.toml | grep 'rpc_servers'
more ~/.junction/config/config.toml | grep 'trust_height'
more ~/.junction/config/config.toml | grep 'trust_hash'

sudo mv $HOME/.junction/priv_validator_state.json.backup $HOME/.junction/data/priv_validator_state.json

sudo systemctl restart junctiond && journalctl -u junctiond -f -o cat

Launch Node

sudo systemctl restart junctiond && journalctl -u junctiond -f -o cat		

Check sync status

junctiond status 2>&1 | jq .sync_info

Command services

- Reload
sudo systemctl daemon-reload

- Start
sudo systemctl start junctiond

- Stop
sudo systemctl stop junctiond

- Restart
sudo systemctl restart junctiond

- Check Status
sudo systemctl status junctiond

- Check Logs
sudo journalctl -u junctiond -f -o cat

Wallet

Creat Wallet

junctiond keys add wallet

Recover existing key

junctiond keys add wallet --recover

List All Keys

junctiond keys list

Query Wallet Balance

junctiond q bank balances $(junctiond keys show wallet -a)

To obtain the pubkey:

junctiond comet show-validator

Creat file Validator.json ( nano validator.json )

    {
"pubkey": <validator-pub-key>,
"amount": "1000000amf",
"moniker": "<validator-name>",
"identity": "optional identity signature (ex. UPort or Keybase)",
"website": "validator's (optional) website",
"security": "validator's (optional) security contact email",
"details": "validator's (optional) details",
"commission-rate": "0.1",
"commission-max-rate": "0.2",
"commission-max-change-rate": "0.01",
"min-self-delegation": "1"
}

Finally, create the validator:

junctiond tx staking create-validator path/to/validator.json --from wallet --chain-id junction --fees 500amf

Set max peer

sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.junction/config/config.toml
sed -i -e "s/^max_num_inbound_peers *=.*/max_num_inbound_peers = 300/" $HOME/.junction/config/config.toml
sed -i -e "s/^max_num_outbound_peers *=.*/max_num_outbound_peers = 300/" $HOME/.junction/config/config.toml

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 = "10"|' \
  $HOME/.junction/config/app.toml

# Upgrade v0.2.0 at height 2383922

cd $HOME
wget -O junctiond https://github.com/airchains-network/junction/releases/download/v0.2.0/junctiond-linux-amd64
chmod +x junctiond
sudo mv $HOME/junctiond $(which junctiond)
sudo systemctl restart junctiond && sudo journalctl -u junctiond -f -o cat

Done !

# Detailed Guide to Setting Up a New Node on a VPS with an Existing Node

Create a New Directory for the New Node

mkdir -p $HOME/.new_node

# Install ignite CLI

Download and install Ignite CLI.

wget https://github.com/ignite/cli/releases/download/v0.27.1/ignite_0.27.1_linux_amd64.tar.gz
chmod +x ignite_0.27.1_linux_amd64.tar.gz
tar -xvf ignite_0.27.1_linux_amd64.tar.gz
sudo mv ignite /usr/local/bin
ignite version

# Download the junctiond Binary

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

# Initialize the New Node

junctiond init <new_moniker> --home $HOME/.new_node

# Update the Genesis File

wget https://github.com/airchains-network/junction/releases/download/v0.1.0/genesis.json
cp genesis.json $HOME/.new_node/config/genesis.json

# Update the config.toml File

Modify config.toml to update persistent_peers and minimum-gas-prices

nano $HOME/.new_node/config/config.toml

Change the persistent_peers section to connect to peer nodes:

persistent_peers = "1f0eada58b83f32ac7ba0ff704e15732ae2a25c4@2a01:43456,[email protected]:63656,[email protected]:38656,[email protected]:13756,[email protected]:43456,fe51d4777e7ad2b4d93c3a096761a31966c65c64@2a0a:26656,[email protected]:43456,[email protected]:26656,[email protected]:43456,[email protected]:43456,[email protected]:26656,[email protected]:26656"

Update the minimum gas price:

sed -i 's|^minimum-gas-prices *=.*|minimum-gas-prices = "0.00025amf"|g' $HOME/.new_node/config/app.toml

# Update config.toml with New Ports

Modify config.toml to set new ports for the new node.

[p2p]
laddr = "tcp://0.0.0.0:26658"  # Change P2P listen port

[rpc]
laddr = "tcp://0.0.0.0:26659"  # Change RPC listen port

# 8. Configure the systemd Service

Create a new systemd service file to manage the new node.

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

[Service]
User=$USER
ExecStart=/usr/local/bin/junctiond start --home $HOME/.new_node
Restart=on-failure
RestartSec=10
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl daemon-reload
sudo systemctl enable junctiond-new

# 9 Start the New Node

Start the service for the new node and check the logs.

sudo systemctl start junctiond-new
sudo journalctl -u junctiond-new -f -o cat

# 10 Check the New Ports

sudo netstat -tuln

# 11 Check the Status of the New Node

Check the status and information of the new node.

junctiond status --home $HOME/.new_node

# Summary

• Create a new directory for the new node.

• Install Ignite CLI and junctiond binary.

• Initialize the new node with a new moniker.

• Update the genesis.json file and configure config.toml with appropriate settings.

• Create and configure a systemd service for the new node.

• Start the new node and verify its status and ports.

# Delete New_node

# Dừng dịch vụ của node mới
sudo systemctl stop junctiond-new

# Xóa thư mục dữ liệu và cấu hình của node mới
rm -rf $HOME/.new_node

# Xóa file cấu hình dịch vụ systemd
sudo rm /etc/systemd/system/junctiond-new.service

# Tải lại các cấu hình systemd
sudo systemctl daemon-reload

# Xóa binary junctiond nếu không cần
sudo rm /usr/local/bin/junctiond

# Tắt và xóa dịch vụ khỏi danh sách systemd
sudo systemctl disable junctiond-new
sudo systemctl stop junctiond-new

# Kiểm tra các port để xác nhận rằng các cổng đã được giải phóng
sudo netstat -tuln

Snapshot (Option)

Setup aria2c

apt install aria2

Download snapshot

aria2c -x16 -s16 https://snapshots.moonbridge.team/testnet/airchains/snapshot_latest.tar.lz4

Extract File tar.lz4

lz4 -dc snapshot_latest.tar.lz4 | tar -x -C $HOME/.junction

VIỆT NAM

# Cài Đặt Các Công Cụ Cần Thiết
sudo apt update && sudo apt install lz4 aria2 -y

# Dừng Dịch Vụ và Xóa Dữ Liệu Cũ
sudo systemctl stop junctiond
cp $HOME/.junction/data/priv_validator_state.json $HOME/.junction/priv_validator_state.json.backup
rm -rf $HOME/.junction/data

# Tải Snapshot Mới Nhất
aria2c -x5 -s4 https://snapshots.moonbridge.team/testnet/airchains/snapshot_latest.tar.lz4

# Giải Nén Tệp Snapshot
lz4 -dc snapshot_latest.tar.lz4 | tar -x -C $HOME/.junction

# Khôi Phục Tệp `priv_validator_state.json`
mv $HOME/.junction/priv_validator_state.json.backup $HOME/.junction/data/priv_validator_state.json

# Xóa Tệp Snapshot Sau Khi Giải Nén
rm -f snapshot_latest.tar.lz4

# Khởi Động Lại Dịch Vụ và Kiểm Tra Nhật Ký
sudo systemctl start junctiond && sudo journalctl -u junctiond -f --no-hostname -o cat