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ollo node setup for testnet — ollo-testnet-0

Official documentation:

Explorer:

Usefull tools and references

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

  • 4x CPUs; the faster clock speed the better
  • 8GB RAM
  • 100GB 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)

Recommended Hardware Requirements

  • 8x CPUs; the faster clock speed the better
  • 64GB RAM
  • 1TB 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 ollo fullnode

Option 1 (automatic)

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

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

ollod status 2>&1 | jq .SyncInfo

(OPTIONAL) State Sync

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

sudo systemctl stop ollod
ollod tendermint unsafe-reset-all --home $HOME/.ollo --keep-addr-book

SNAP_RPC="https://node.ollo.zone:443"

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

PEERS="[email protected]:26656,[email protected]:26656,[email protected]:26626,[email protected]:26656,[email protected]:26656,[email protected]:29656,[email protected]:30656,[email protected]:16656,[email protected]:37656,[email protected]:15656"
sed -i -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.ollo/config/config.toml

sed -i -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\"|" $HOME/.ollo/config/config.toml

sudo systemctl restart ollod
sudo journalctl -u ollod -f --no-hostname -o cat

Create wallet

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

ollod keys add $WALLET

(OPTIONAL) To recover your wallet using seed phrase

ollod keys add $WALLET --recover

To get current list of wallets

ollod keys list

Save wallet info

Add wallet and valoper address into variables

OLLO_WALLET_ADDRESS=$(ollod keys show $WALLET -a)
OLLO_VALOPER_ADDRESS=$(ollod keys show $WALLET --bech val -a)
echo 'export OLLO_WALLET_ADDRESS='${OLLO_WALLET_ADDRESS} >> $HOME/.bash_profile
echo 'export OLLO_VALOPER_ADDRESS='${OLLO_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.
You can request testnet tokens from the OLLO testnet faucet in the OLLO Discord

  • Get verified
  • Get Testnet Explorers role in #roles channel
  • Move to #testnet-faucet and request tokens
!request YOUR_WALLET_ADDRESS

Create validator

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

To check your wallet balance:

ollod query bank balances $OLLO_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

ollod tx staking create-validator \
  --amount 2000000utollo \
  --from $WALLET \
  --commission-max-change-rate "0.01" \
  --commission-max-rate "0.2" \
  --commission-rate "0.07" \
  --min-self-delegation "1" \
  --pubkey  $(ollod tendermint show-validator) \
  --moniker $NODENAME \
  --chain-id $OLLO_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 ${OLLO_PORT}656,${OLLO_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 ollo 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/ollo/tools/synctime.py && python3 ./synctime.py

Check your validator key

[[ $(ollod q staking validator $OLLO_VALOPER_ADDRESS -oj | jq -r .consensus_pubkey.key) = $(ollod status | jq -r .ValidatorInfo.PubKey.value) ]] && echo -e "\n\e[1m\e[32mTrue\e[0m\n" || echo -e "\n\e[1m\e[31mFalse\e[0m\n"

Get list of validators

ollod 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:${OLLO_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 ollod -o cat

Start service

sudo systemctl start ollod

Stop service

sudo systemctl stop ollod

Restart service

sudo systemctl restart ollod

Node info

Synchronization info

ollod status 2>&1 | jq .SyncInfo

Validator info

ollod status 2>&1 | jq .ValidatorInfo

Node info

ollod status 2>&1 | jq .NodeInfo

Show node id

ollod tendermint show-node-id

Wallet operations

List of wallets

ollod keys list

Recover wallet

ollod keys add $WALLET --recover

Delete wallet

ollod keys delete $WALLET

Get wallet balance

ollod query bank balances $OLLO_WALLET_ADDRESS

Transfer funds

ollod tx bank send $OLLO_WALLET_ADDRESS <TO_OLLO_WALLET_ADDRESS> 10000000utollo

Voting

ollod tx gov vote 1 yes --from $WALLET --chain-id=$OLLO_CHAIN_ID

Staking, Delegation and Rewards

Delegate stake

ollod tx staking delegate $OLLO_VALOPER_ADDRESS 10000000utollo --from=$WALLET --chain-id=$OLLO_CHAIN_ID --gas=auto

Redelegate stake from validator to another validator

ollod tx staking redelegate <srcValidatorAddress> <destValidatorAddress> 10000000utollo --from=$WALLET --chain-id=$OLLO_CHAIN_ID --gas=auto

Withdraw all rewards

ollod tx distribution withdraw-all-rewards --from=$WALLET --chain-id=$OLLO_CHAIN_ID --gas=auto

Withdraw rewards with commision

ollod tx distribution withdraw-rewards $OLLO_VALOPER_ADDRESS --from=$WALLET --commission --chain-id=$OLLO_CHAIN_ID

Validator management

Edit validator

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

Unjail validator

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

Delete node

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

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