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Source node setup for Testnet — sourcechain-testnet

Official documentation:

• Validator setup instructions

Explorer:

• https://explorer.testnet.sourceprotocol.io

Usefull tools and references

To generate gentx for sourcechain-testnet testnet please navigate to Generate gentx for sourcechain-testnet testnet

To set up monitoring for your validator node navigate to Set up monitoring and alerting for source validator

To migrate your validator to another machine read Migrate your validator to another machine

Hardware Requirements

Like any Cosmos-SDK chain, the hardware requirements are pretty modest.

Minimum Hardware Requirements

• 3x CPUs; the faster clock speed the better
• 4GB RAM
• 80GB Disk
• Permanent Internet connection (traffic will be minimal during testnet; 10Mbps will be plenty - for production at least 100Mbps is expected)

Recommended Hardware Requirements

• 4x CPUs; the faster clock speed the better
• 8GB RAM
• 200GB of storage (SSD or NVME)
• Permanent Internet connection (traffic will be minimal during testnet; 10Mbps will be plenty - for production at least 100Mbps is expected)

Set up your source fullnode

Option 1 (automatic)

You can setup your source fullnode in few minutes by using automated script below. It will prompt you to input your validator node name!

wget -O source.sh https://raw.githubusercontent.com/kj89/testnet_manuals/main/source/source.sh && chmod +x source.sh && ./source.sh

Option 2 (manual)

You can follow manual guide if you better prefer setting up node manually

Post installation

When installation is finished please load variables into system

source $HOME/.bash_profile

Next you have to make sure your validator is syncing blocks. You can use command below to check synchronization status

sourced status 2>&1 | jq .SyncInfo

SnapShot (~0.3 GB) updated every 6 hours (by STAVR)

Source: https://github.com/obajay/StateSync-snapshots/blob/main/Source/README.md

cd $HOME
sudo systemctl stop sourced
cp $HOME/.source/data/priv_validator_state.json $HOME/.source/priv_validator_state.json.backup
rm -rf $HOME/.source/data
curl -o - -L http://source.snapshot.stavr.tech:4001/source/source-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.source --strip-components 2
curl -o - -L http://source.wasm.stavr.tech:1050/wasm-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.source/data --strip-components 3
mv $HOME/.source/priv_validator_state.json.backup $HOME/.source/data/priv_validator_state.json
sudo systemctl restart sourced && journalctl -u sourced -f -o cat

Create wallet

To create new wallet you can use command below. Don’t forget to save the mnemonic

sourced keys add $WALLET

(OPTIONAL) To recover your wallet using seed phrase

sourced keys add $WALLET --recover

To get current list of wallets

sourced keys list

Save wallet info

Add wallet and valoper address and load variables into the system

SOURCE_WALLET_ADDRESS=$(sourced keys show $WALLET -a)
SOURCE_VALOPER_ADDRESS=$(sourced keys show $WALLET --bech val -a)
echo 'export SOURCE_WALLET_ADDRESS='${SOURCE_WALLET_ADDRESS} >> $HOME/.bash_profile
echo 'export SOURCE_VALOPER_ADDRESS='${SOURCE_VALOPER_ADDRESS} >> $HOME/.bash_profile
source $HOME/.bash_profile

Fund your wallet

In order to create validator first you need to fund your wallet with testnet tokens. To top up your wallet join Source discord server and navigate to:

• #faucet channel

To request a faucet grant:

$request <YOUR_WALLET_ADDRESS>

Create validator

Before creating validator please make sure that you have at least 1 qck (1 qck is equal to 1000000 usource) and your node is synchronized

To check your wallet balance:

sourced query bank balances $SOURCE_WALLET_ADDRESS

If your wallet does not show any balance than probably your node is still syncing. Please wait until it finish to synchronize and then continue

To create your validator run command below

sourced tx staking create-validator \
  --amount 1000000usource \
  --from $WALLET \
  --commission-max-change-rate "0.01" \
  --commission-max-rate "0.2" \
  --commission-rate "0.07" \
  --min-self-delegation "1" \
  --pubkey  $(sourced tendermint show-validator) \
  --moniker $NODENAME \
  --chain-id $SOURCE_CHAIN_ID

Security

To protect you keys please make sure you follow basic security rules

Set up ssh keys for authentication

Good tutorial on how to set up ssh keys for authentication to your server can be found here

Basic Firewall security

Start by checking the status of ufw.

sudo ufw status

Sets the default to allow outgoing connections, deny all incoming except ssh and 26656. Limit SSH login attempts

sudo ufw default allow outgoing
sudo ufw default deny incoming
sudo ufw allow ssh/tcp
sudo ufw limit ssh/tcp
sudo ufw allow ${SOURCE_PORT}656,${SOURCE_PORT}660/tcp
sudo ufw enable

Monitoring

To monitor and get alerted about your validator health status you can use my guide on Set up monitoring and alerting for source validator

Calculate synchronization time

This script will help you to estimate how much time it will take to fully synchronize your node
It measures average blocks per minute that are being synchronized for period of 5 minutes and then gives you results

wget -O synctime.py https://raw.githubusercontent.com/kj89/testnet_manuals/main/source/tools/synctime.py && python3 ./synctime.py

Get list of validators

sourced q staking validators -oj --limit=3000 | jq '.validators[] | select(.status=="BOND_STATUS_BONDED")' | jq -r '(.tokens|tonumber/pow(10; 6)|floor|tostring) + " \t " + .description.moniker' | sort -gr | nl

Get currently connected peer list with ids

curl -sS http://localhost:${SOURCE_PORT}657/net_info | jq -r '.result.peers[] | "\(.node_info.id)@\(.remote_ip):\(.node_info.listen_addr)"' | awk -F ':' '{print $1":"$(NF)}'

Usefull commands

Service management

Check logs

journalctl -fu sourced -o cat

Start service

sudo systemctl start sourced

Stop service

sudo systemctl stop sourced

Restart service

sudo systemctl restart sourced

Node info

Synchronization info

sourced status 2>&1 | jq .SyncInfo

Validator info

sourced status 2>&1 | jq .ValidatorInfo

Node info

sourced status 2>&1 | jq .NodeInfo

Show node id

sourced tendermint show-node-id

Wallet operations

List of wallets

sourced keys list

Recover wallet

sourced keys add $WALLET --recover

Delete wallet

sourced keys delete $WALLET

Get wallet balance

sourced query bank balances $SOURCE_WALLET_ADDRESS

Transfer funds

sourced tx bank send $SOURCE_WALLET_ADDRESS <TO_SOURCE_WALLET_ADDRESS> 10000000usource

Voting

sourced tx gov vote 1 yes --from $WALLET --chain-id=$SOURCE_CHAIN_ID

Staking, Delegation and Rewards

Delegate stake

sourced tx staking delegate $SOURCE_VALOPER_ADDRESS 10000000usource --from=$WALLET --chain-id=$SOURCE_CHAIN_ID --gas=auto

Redelegate stake from validator to another validator

sourced tx staking redelegate <srcValidatorAddress> <destValidatorAddress> 10000000usource --from=$WALLET --chain-id=$SOURCE_CHAIN_ID --gas=auto

Withdraw all rewards

sourced tx distribution withdraw-all-rewards --from=$WALLET --chain-id=$SOURCE_CHAIN_ID --gas=auto

Withdraw rewards with commision

sourced tx distribution withdraw-rewards $SOURCE_VALOPER_ADDRESS --from=$WALLET --commission --chain-id=$SOURCE_CHAIN_ID

Validator management

Edit validator

sourced tx staking edit-validator \
  --moniker=$NODENAME \
  --identity=<your_keybase_id> \
  --website="<your_website>" \
  --details="<your_validator_description>" \
  --chain-id=$SOURCE_CHAIN_ID \
  --from=$WALLET

Unjail validator

sourced tx slashing unjail \
  --broadcast-mode=block \
  --from=$WALLET \
  --chain-id=$SOURCE_CHAIN_ID \
  --gas=auto

Delete node

This commands will completely remove node from server. Use at your own risk!

sudo systemctl stop sourced
sudo systemctl disable sourced
sudo rm /etc/systemd/system/source* -rf
sudo rm $(which sourced) -rf
sudo rm $HOME/.source* -rf
sudo rm $HOME/source -rf