Setup a Full-Chain Node
Last update: June 15, 2024
Requirements🔗︎
- A working Ubuntu 18.04+ installation with SSH access
- Decent hardware: 8 cores, 2.5GHz / core, 32 GB RAM, 2 TB free space available.
- Low latency and decent speed bandwidth: anything wired with 10MBps or higher. Don't setup on WiFi.
Environment Setup🔗︎
Login as a regular user for security reasons. Not recommended to run as root unless you know exactly what you're doing. If you don't have a regular user account, just open a terminal as root and type
set the password and press Enter for every question. Now open a SSH and login as that user.
Info
Copy each command one by one and wait for the first one to finish before running the next one. I haven’t grouped every command in one line so you understand better what’s going on.
sudo apt update
sudo apt upgrade
sudo apt install build-essential curl tmux libgmp3-dev flex bison --yes
wget https://crypto.stanford.edu/pbc/files/pbc-0.5.14.tar.gz
tar xfz pbc-0.5.14.tar.gz && cd pbc-0.5.14
./configure
make
sudo make install
sudo ldconfig
mkdir $HOME/bin
echo 'export PATH="$HOME/bin:$PATH"' >> ~/.profile
source ~/.profile
Download the executables🔗︎
Run these commands, one by one, from a terminal, logged in as a regular user:
wget https://github.com/stratosnet/stratos-chain/releases/download/v0.12.1/stchaind -P $HOME/bin
chmod +x $HOME/bin/stchaind
Check files for integrity:
md5sum $HOME/bin/stchaind
# Expected response:
# 166f4d290741ede24ec37071ed982591 /home/your-username/bin/stchaind
Verify installation:
Initialize the node🔗︎
cd $HOME
stchaind init MyNodeName --chain-id stratos-1
```
Replace MyNodeName with the name you want to give your node.
This step will create .stchaind folder and config files.
---
### Download config & genesis files
```sh
wget https://raw.githubusercontent.com/stratosnet/mainnet/main/config.toml -O $HOME/.stchaind/config/config.toml
wget https://raw.githubusercontent.com/stratosnet/mainnet/main/genesis/genesis.json -O $HOME/.stchaind/config/genesis.json
Enable State Sync🔗︎
- Get the last block height
- Get the hash for the block
Since snapshots are generated every 1,000 blocks, you'll need to obtain the hash for the block number at 1,000-interval heights.
For example, in the above response we got 32612 so we will need to request the hash for height 32600.
If latest block would have been 37452, we will request the hash for 37400 and so on.
Always use the most recent block height, rounded down to the nearest lower multiple of 1,000.
- Setup config.toml
Edit the state sync section of .stchaind/config/config.toml as follows:
Remember to use the latest height rounded down to last 1,000 round number and its hash.
#######################################################
### State Sync Configuration Options ###
#######################################################
[statesync]
# State sync rapidly bootstraps a new node by discovering, fetching, and restoring a state machine
# snapshot from peers instead of fetching and replaying historical blocks. Requires some peers in
# the network to take and serve state machine snapshots. State sync is not attempted if the node
# has any local state (LastBlockHeight > 0). The node will have a truncated block history,
# starting from the height of the snapshot.
enable = true
# RPC servers (comma-separated) for light client verification of the synced state machine and
# retrieval of state data for node bootstrapping. Also needs a trusted height and corresponding
# header hash obtained from a trusted source, and a period during which validators can be trusted.
#
# For Cosmos SDK-based chains, trust_period should usually be about 2/3 of the unbonding time (~2
# weeks) during which they can be financially punished (slashed) for misbehavior.
rpc_servers = "35.160.97.156:26657,rpc.thestratos.org:80"
trust_height = 32600
trust_hash = "C524665A353CB6C5E03D4B73B3151FA00862704A0966E01C5E97F1DE1B08B1B4"
trust_period = "168h0m0s"
# Time to spend discovering snapshots before initiating a restore.
discovery_time = "15s"
# Temporary directory for state sync snapshot chunks, defaults to the OS tempdir (typically /tmp).
# Will create a new, randomly named directory within, and remove it when done.
temp_dir = "./tmp"
# The timeout duration before re-requesting a chunk, possibly from a different
# peer (default: 1 minute).
chunk_request_timeout = "10s"
# The number of concurrent chunk fetchers to run (default: 1).
chunk_fetchers = "4"
- Edit your node name
Find the following values and edit them accordingly:
You can save and close the config.toml file.
- Disable JSON-RPC
The EVM RPC will prevent your node from starting using state sync, so you can temporarily disable it by editing .stchaind/config/app.toml:
You can re-enable it once node's sync is up to date (node restart required).
Start the node🔗︎
The node must be running at all times so we'll run it in a tmux window so it's running in the background even when you close your ssh terminal:
Wait a few minutes, your node will probably get a list of errors such as these. It's normal, just wait somewhere between a few minutes to half an hour.
{"level":"info","server":"node","module":"statesync","format":1,"height":32600,"time":"2023-08-10T21:35:36Z","message":"Discovered new snapshot"}
{"level":"info","server":"node","module":"statesync","format":1,"height":32500,"time":"2023-08-10T21:35:36Z","message":"Discovered new snapshot"}
{"level":"info","server":"node","module":"statesync","format":1,"height":32600,"time":"2023-08-10T21:35:53Z","message":"Snapshot accepted, restoring"}
After a while, you should start to see these messages:
{"level":"info","server":"node","module":"state","app_hash":"3F44580F60F95CADA57D2532B77894D101A30C841D197A8F972D0CEB6DBC4F2A","height":32968,"num_txs":0,"time":"2023-08-10T21:36:15Z","message":"committed state"}
{"level":"info","server":"node","module":"txindex","height":32968,"time":"2023-08-10T21:36:15Z","message":"indexed block exents"}
{"level":"info","server":"node","module":"state","height":32968,"num_invalid_txs":0,"num_valid_txs":0,"time":"2023-08-10T21:36:15Z","message":"executed block"}
{"level":"info","commit":"","time":"2023-08-10T21:36:15Z","message":"commit synced"}
{"level":"info","server":"node","module":"state","app_hash":"3EEAF7EA60E7E83CDE5DAB49E9E65C2D34D2B7DE24127C0792F2036410CAE690","height":32968,"num_txs":0,"time":"2023-08-10T21:36:15Z","message":"committed state"}
{"level":"info","server":"node","module":"txindex","height":32968,"time":"2023-08-10T21:36:15Z","message":"indexed block exents"}
{"level":"info","server":"node","module":"state","height":32968,"num_invalid_txs":0,"num_valid_txs":0,"time":"2023-08-10T21:36:15Z","message":"executed block"}
{"level":"info","commit":"","time":"2023-08-10T21:36:15Z","message":"commit synced"}
This means that the node has started to sync but it's going to take a bit to reach the latest block height. You can check the latest height on Stratos Explorer.
Leave the node running in background by detaching from tmux:
Press and hold CTRL, then press B, release all keys and press D. Once in a while, you can check the node status by running this command:
and look for
Info
"catching_up":false
When catching_up shows false and latest_block_height matches the one on Explorer page, you're ready to setup the node as Validator.
Create a wallet🔗︎
Once your node reaches the latest block height, run this command to generate a wallet address:
You can enter anything you want for WalletName
Save the address, pubkey and mnemonic phrase for later use.
Get some tokens to your wallet🔗︎
You will need at least a couple of STOS to create a validator, so use the Bridge to convert some ERC-20 tokens to Stratos native coins.
Check your wallet balance with:
How to create a Validator🔗︎
Once your node has reached the latest block height and you managed to gather enough tokens to become an active validator, follow these steps.
Get a validator pubkey:🔗︎
Run this command in a terminal:
You should get reply like:
Info
{"@type":"/cosmos.crypto.ed25519.PubKey","key":"31E7NyvztPzXoEAuxbqGiZ4LiwhJ1pQksbQp7cQVbnc="}
Create the validator🔗︎
Use the following command:
stchaind tx staking create-validator \
--amount=10stos \
--pubkey='{"@type":"/cosmos.crypto.ed25519.PubKey","key":"ZZZZZZZZZZZZZZZZZZ"}' \
--moniker="MyNodeName" \
--commission-rate=0.10 \
--commission-max-rate=0.20 \
--commission-max-change-rate=0.01 \
--min-self-delegation=1 \
--from=st1xxxxxxxxxxxxxxxxxxx \
--chain-id=stratos-1 \
--keyring-backend=file \
--gas=auto \
--gas-adjustment=1.5 \
--gas-prices=1000000000wei -y
In the above command, edit the following:
amount: enter the amount of stos you want to self-delegate
pubkey: use the pubkey you got earlier
moniker: use the MyNodeName you entered in config and for init
from: replace st1xxxxx with your wallet address
You can delegate more tokens with this command (example for 10 tokens):
stchaind tx staking delegate stvaloper1zzzz 10stos \
--from=st1xxxx \
--chain-id=stratos-1 \
--keyring-backend=file \
--gas=auto
--gas-adjustment=1.5
--gas-prices=1000000000wei
Replace:
10stos: enter the amount you want to delegate
stvaloper1zzzz: get your operator address by clicking your node name in Stratos Explorer
st1xxxx: replace with your wallet address
Have fun!
Resources🔗︎
Official Guide - Full Chain Node*
Official Guide - How to become a validator*
*Including instructions for Testnet.