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aura node setup for testnet — euphoria-1

Official documentation:

Explorer:

Usefull tools and references

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

Option 1 (automatic)

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

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

aurad status 2>&1 | jq .SyncInfo

(OPTIONAL) Disable and cleanup indexing

indexer="null"
sed -i -e "s/^indexer *=.*/indexer = \"$indexer\"/" $HOME/.aura/config/config.toml
sudo systemctl restart aurad
sleep 3
sudo rm -rf $HOME/.aura/data/tx_index.db

(OPTIONAL) State Sync

You can state sync your node in minutes by running commands below.

SNAP_RPC1="https://snapshot-1.euphoria.aura.network:443" \
&& SNAP_RPC2="https://snapshot-2.euphoria.aura.network:443"
LATEST_HEIGHT=$(curl -s $SNAP_RPC2/block | jq -r .result.block.header.height) \
&& BLOCK_HEIGHT=$((LATEST_HEIGHT - 2000)) \
&& TRUST_HASH=$(curl -s "$SNAP_RPC2/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)
sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC1,$SNAP_RPC2\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"|" $HOME/.aura/config/config.toml
aurad unsafe-reset-all --home $HOME/.aura
sudo systemctl restart aurad && journalctl -fu aurad -o cat

Create wallet

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

aurad keys add $WALLET

(OPTIONAL) To recover your wallet using seed phrase

aurad keys add $WALLET --recover

To get current list of wallets

aurad keys list

Save wallet info

Add wallet and valoper address into variables

AURA_WALLET_ADDRESS=$(aurad keys show $WALLET -a)

AURA_VALOPER_ADDRESS=$(aurad keys show $WALLET --bech val -a)

Load variables into the system

echo 'export AURA_WALLET_ADDRESS='${AURA_WALLET_ADDRESS} >> $HOME/.bash_profile
echo 'export AURA_VALOPER_ADDRESS='${AURA_VALOPER_ADDRESS} >> $HOME/.bash_profile
source $HOME/.bash_profile

Create validator

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

To check your wallet balance:

aurad query bank balances $AURA_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

aurad tx staking create-validator \
  --amount 100000ueaura \
  --from $WALLET \
  --commission-max-change-rate "0.01" \
  --commission-max-rate "0.2" \
  --commission-rate "0.07" \
  --min-self-delegation "1" \
  --pubkey  $(aurad tendermint show-validator) \
  --moniker $NODENAME \
  --chain-id $AURA_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 ${AURA_PORT}656,${AURA_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 aura 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/aura/tools/synctime.py && python3 ./synctime.py

Get list of validators

aurad 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:${AURA_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 aurad -o cat

Start service

sudo systemctl start aurad

Stop service

sudo systemctl stop aurad

Restart service

sudo systemctl restart aurad

Node info

Synchronization info

aurad status 2>&1 | jq .SyncInfo

Validator info

aurad status 2>&1 | jq .ValidatorInfo

Node info

aurad status 2>&1 | jq .NodeInfo

Show node id

aurad tendermint show-node-id

Wallet operations

List of wallets

aurad keys list

Recover wallet

aurad keys add $WALLET --recover

Delete wallet

aurad keys delete $WALLET

Get wallet balance

aurad query bank balances $AURA_WALLET_ADDRESS

Transfer funds

aurad tx bank send $AURA_WALLET_ADDRESS <TO_AURA_WALLET_ADDRESS> 10000000ueaura

Voting

aurad tx gov vote 1 yes --from $WALLET --chain-id=$AURA_CHAIN_ID

Staking, Delegation and Rewards

Delegate stake

aurad tx staking delegate $AURA_VALOPER_ADDRESS 10000000ueaura --from=$WALLET --chain-id=$AURA_CHAIN_ID --gas=auto

Redelegate stake from validator to another validator

aurad tx staking redelegate <srcValidatorAddress> <destValidatorAddress> 10000000ueaura --from=$WALLET --chain-id=$AURA_CHAIN_ID --gas=auto

Withdraw all rewards

aurad tx distribution withdraw-all-rewards --from=$WALLET --chain-id=$AURA_CHAIN_ID --gas=auto

Withdraw rewards with commision

aurad tx distribution withdraw-rewards $AURA_VALOPER_ADDRESS --from=$WALLET --commission --chain-id=$AURA_CHAIN_ID

Validator management

Edit validator

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

Unjail validator

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

Delete node

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

sudo systemctl stop aurad
sudo systemctl disable aurad
sudo rm /etc/systemd/system/aura* -rf
sudo rm $(which aurad) -rf
sudo rm $HOME/.aura* -rf
sudo rm $HOME/aura -rf
sed -i '/AURA_/d' ~/.bash_profile