Airchains

This manual offers a detailed, step-by-step approach for establishing and operating a full validator node on the Junction.

Website: https://www.airchains.io/

Twitter: https://twitter.com/airchains_io

Discord: https://discord.gg/airchains

Faucet on Discord

Services

Explorer: https://explorer.nodesync.top/Junction-Testnet

API: https://junction-testnet-api.nodesync.top

RPC: https://junction-testnet-rpc.nodesync.top

1. Minimum hardware requirement

2 Cores, 4G Ram, 40G SSD, Ubuntu 22.04

2. Auto Install

Use snapshot:

sudo apt install curl -y && wget https://nodesync.top/Testnet/Junction_auto && chmod +x Junction_auto && ./Junction_auto

2.1 Wallet

Add New Wallet Key - Save seed

junctiond keys add wallet

Recover existing key

junctiond keys add wallet --recover

List All Keys

junctiond keys list

2.2 Query Wallet Balance

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

2.3 Check sync status

False is synced

junctiond status 2>&1 | jq .sync_info

2.4 Create Validator

Obtain your validator public key by running the following command:

junctiond comet show-validator

The output will be similar to this (with a different key):

{"@type":"/cosmos.crypto.ed25519.PubKey","key":"lR1d7YBVK5jYijOfWVKRFoWCsS4dg3kagT7LB9GnG8I="}

Then, create a file named validator.json with the following content:

nano $HOME/validator.json

Change your info, from "pubkey" to "details" and Save them

{
	"pubkey": {"@type":"/cosmos.crypto.ed25519.PubKey","key":"lR1d7YBVK5jYijOfWVKRFoWCsS4dg3kagT7LB9GnG8I="},
	"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, we're ready to submit the transaction to create the validator:

junctiond tx staking create-validator validator.json --from wallet --chain-id junction --fees 5000amf -y

2.5 Delegate Token to your own validator

junctiond tx staking delegate $(junctiond keys show wallet --bech val -a)  1000000amf \
--from wallet --chain-id junction \
--fees 5000amf \
-y

2.6 Withdraw rewards and commission from your validator

junctiond tx distribution withdraw-rewards $(junctiond keys show wallet --bech val -a) \
--from wallet --chain-id junction \
--fees 5000amf \
-y

2.7 Unjail validator

junctiond tx slashing unjail --from wallet --chain-id junction --fees 5000amf -y

2.8 Services Management

# Reload Service
sudo systemctl daemon-reload

# Enable Service
sudo systemctl enable junctiond

# Disable Service
sudo systemctl disable junctiond

# Start Service
sudo systemctl start junctiond

# Stop Service
sudo systemctl stop junctiond

# Restart Service
sudo systemctl restart junctiond

# Check Service Status
sudo systemctl status junctiond

# Check Service Logs
sudo journalctl -u junctiond -f --no-hostname -o cat

3. Backup Validator

Important

cat $HOME/.junction/config/priv_validator_key.json

4. Remove node

sudo systemctl stop junctiond
sudo systemctl disable junctiond
rm -rf /etc/systemd/system/junctiond.service
sudo systemctl daemon-reload
sudo rm -f /usr/local/bin/junctiond
sudo rm -f $(which junctiond)
sudo rm -rf $HOME/.junction
sudo rm -rf Junction_auto

5. Snapshot

sudo systemctl stop junctiond
cp $HOME/.junction/data/priv_validator_state.json $HOME/.junction/priv_validator_state.json.backup
rm -rf $HOME/.junction/data $HOME/.junction/wasmPath

curl https://files.nodesync.top/Junction/junction.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.junction

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

sudo systemctl restart junctiond && sudo journalctl -u junctiond -f --no-hostname -o cat

6. State Sync

sudo systemctl stop junctiond

cp $HOME/.junction/data/priv_validator_state.json $HOME/.junction/priv_validator_state.json.backup
junctiond tendermint unsafe-reset-all --home $HOME/.junction

peers="de2e7251667dee5de5eed98e54a58749fadd23d8@34.22.237.85:26656,1918bd71bc764c71456d10483f754884223959a5@35.240.206.208:26656,48887cbb310bb854d7f9da8d5687cbfca02b9968@35.200.245.190:26656,de2e7251667dee5de5eed98e54a58749fadd23d8@34.22.237.85:26656,8b72b2f2e027f8a736e36b2350f6897a5e9bfeaa@131.153.232.69:26656,d92c7efcb453ba2edab6d80ad6e3b692e3a7e4f5@49.13.120.225:26656,5c5989b5dee8cff0b379c4f7273eac3091c3137b@57.128.74.22:56256,e09fa8cc6b06b99d07560b6c33443023e6a3b9c6@65.21.131.187:26656,0305205b9c2c76557381ed71ac23244558a51099@162.55.65.162:26656,3e5f3247d41d2c3ceeef0987f836e9b29068a3e9@168.119.31.198:56256,086d19f4d7542666c8b0cac703f78d4a8d4ec528@135.148.232.105:26656,976a0fe0a0fa205478beb66addaae3842907c3f6@37.27.48.77:32656,7d6694fb464a9c9761992f695e6ba1d334403986@164.90.228.66:26656,b2e9bebc16bc35e16573269beba67ffea5932e13@95.111.239.250:26656,23152e91e3bd642bef6508c8d6bd1dbedccf9e56@95.111.237.24:26656,c1e9d12d80ec74b8ddbabdec9e0dad71337ba43f@135.181.82.176:26656,3b429f2c994fa76f9443e517fd8b72dcf60e6590@37.27.11.132:26656,84b6ccf69680c9459b3b78ca4ba80313fa9b315a@159.69.208.30:26656,e78a440c57576f3743e6aa9db00438462980927e@5.161.199.115:26656,49fb1316b22c71e455720af15dd552dafb9af39a@5.189.151.175:26656,e831fa909cce0d1807cfcf417e28e782530f5c94@161.97.66.254:26666,db38d672f66df4de01b26e1fa97e1632fbfb1bdf@173.249.57.190:26656,08a0014125bded5fe76b9dc3275b0a58b6841b43@116.203.184.36:26656,6025c1523ad0cd6926ef277cfcf46d82ebb43c21@116.203.24.46:26656,fed2e80e159a23bf9f71f980b501c2304cec2f6d@185.194.216.61:17656,1ad9bdeac0b06f585a9c64261d0705c4cbfd28e7@144.91.99.93:26656,a6384bd23bd728ffa9a8452b12fc865dadf51672@81.200.154.160:26656,5b31fdf605645b44ad615c8b79b1550540895fe5@35.214.147.230:26656,6a3a13d7631823eb6dcd00882243c913c819a125@38.242.196.100:26656,3e182e463425dfa6d4cef83f4bdd67c98c36eba3@195.26.243.208:47656,c97c7a9c11cf3cb059ce89c36f7ff219daa3ada4@195.26.246.26:26656,7d162ef2392d25720d7cdb2cfdf2ccf146e32bac@49.13.234.149:26656,5a161464aa73571f1b7e22204bcf3bdb6fb71f3b@195.26.241.184:26656,bff7c802021ed3b4aaf222da9d42280bfc5dad88@65.109.139.181:26656,c284cbda3ab197001136c39c9df8e45af2038513@34.93.143.222:26656,449297568d9d6d4aa51a93f7a1b1e92e1ec38619@65.108.242.9:26656,611440c7193678ec1cd0c60b55abfca07dfa27cd@95.217.161.97:26656,beec52199d4b28cab6fc3b2f2a2718c6667ac46a@37.27.19.95:26656,226b9c42e81cddd185d435348cd89f87fee37279@135.181.42.46:26656,479b63df84e247c55e80cccd9abbf7100a334fcc@65.108.156.83:26656"

SNAP_RPC="https://junction-testnet-rpc.nodesync.top:443"

sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.junction/config/config.toml 

LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height);
BLOCK_HEIGHT=$((LATEST_HEIGHT - 1000));
TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash) 

echo $LATEST_HEIGHT $BLOCK_HEIGHT $TRUST_HASH && sleep 2

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\"| ;
s|^(seeds[[:space:]]+=[[:space:]]+).*$|\1\"\"|" $HOME/.junction/config/config.toml

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

sudo systemctl restart junctiond && sudo journalctl -u junctiond -f --no-hostname -o cat

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