New Harmony Validators
Welcome to Easy Node Validator's Companion guide. Here we cover what it takes to become a Validator on Harmony ONE and what you can expect along the journey.
This first page has notes you need to keep in mind while going through the official manual installation (opens in a new tab) if you choose that route for your first server.
- Create nodes (servers) to sign blocks for your validator wallet
- Create a brand and market it, a lot
- Find a way to add to the community, make people know you're helping
- Answer questions in the official harmony support channels
- Work on getting more delegations, you'll need it
- Debate when it's an appropriate time to add a 2nd BLS key to your server (right now it's around 10 million before you look at a 2nd key)
- Start new nodes as info and shard conditions change daily
So you're ready to get started? Well let's get into what's next!
The first thing to get setup is a server. It's up to you to select a provider and host with enough power to run your validator. Do some research as to which validator hosts are in use currently, this changes often.
We covered creating a user account in our admin tools section.
We suggest creating a folder named harmony inside of your user account to store your files and database.
Once you are logged into your new regular user account, create a harmony directory inside the home directory of the new user with the following command:
Every time you reconnect you'll have to change directory to your harmony folder. If you ever are "lost" after moving around and need to get back to the harmony folder type the following command:
When you connect or want to run commands, use the command above to get back to that folder. You'll want to run all of your installation commands and validator commands from this folder.
For your firewall we only suggest opening up the minimum required ports publicly.
- 22 TCP SSH Access - We suggest locking this to your home or work IP address only and disabling password logins to avoid brute force attacks.
- 6000 TCP
- 9000 TCP
You're safe to leave all outbound ports open on your firewalls to allow your server to talk out to the internet.
In the examples below don't forget to replace
serviceuser with your custom account name before you run them if it's different!
As a validator your going to need a wallet for validation. The creation will come late in the guide, once your server is online and synced up. We suggest creating a brand new wallet and only using your designated "Validator Wallet" for validating and collecting the rewards you get from it to keep your data separate. You can send the create validator command below:
cd ~/harmony ./hmy keys add serviceuser --passphrase
It will ask for your password twice, and then repeat back your mnemonic phrase. Keep it somewhere safe and secure and never share it with anyone! You only get one shot at writing down your mnemonic phrase with this option, be very careful and record it properly
You can also import an existing wallet in a variety of ways. Take a look at the output of the command
./hmy keys below to see your options.
./hmy keys Manage your local keys Usage: hmy keys [flags] hmy keys [command] Available Commands: add Create a new keystore key check-passphrase Check if passphrase for given account is valid. export-ks Export the keystore file contents export-private-key Export the secp256k1 private key generate-bls-key Generate bls keys then encrypt and save the private key with a requested passphrase generate-bls-keys Generates multiple bls keys for a given shard network configuration and then encrypts and saves the private key with a requested passphrase get-public-bls-key Get the public bls key associated with the provided private bls key import-ks Import an existing keystore key import-private-key Import an existing keystore key (only accept secp256k1 private keys) list List all the local accounts location Show where `hmy` keeps accounts & their keys mnemonic Compute the bip39 mnemonic for some input entropy recover-bls-key Recover bls keys from an encrypted bls key file recover-from-mnemonic Recover account from mnemonic remove Remove a key from the keystore save-bls-key Encrypt and save the bls private key with a requested passphrase Flags: -h, --help help for keys Global Flags: --file string Path to file for given command when applicable -e, --ledger Use ledger hardware wallet --no-latest Do not add 'latest' to RPC params --no-pretty Disable pretty print JSON outputs -n, --node string <host> (default "http://localhost:9500") -v, --verbose dump out debug information, same as env var HMY_ALL_DEBUG=true Use "hmy keys [command] --help" for more information about a command.
For example, if you'd like to recover your wallet from a mnemonic phrase, run the following command.
./hmy keys recover-from-mnemonic serviceuser --passphrase
After you've created a wallet or imported an existing wallet successfully you can view your registered validator wallet address with the following command.
./hmy keys list
Once you know which wallet you'll be using on your validator, you must send at least 10001 Harmony $ONE to the new wallet before you send your
create-validator command on the blockchain during the Official Setup.
As a new user you'll be setting up some BLS Keys for your server to use on the blockchain during the Official Setup Guide. This section is expanded notes for when that time comes.
We suggest making 10 BLS keys on the shard you start with. Save them to your home PC. They can be reused anytime you deploy that shard again and only need to be created once. Once you have your .key & .pass files save them in a folder at home for reuse via WinSCP, scp, rsync, or however you send files to a server.
When you start you won't need more than 1 for quite some time (at least 9.5 million $ONE today) but if you have the others in place you won't need to restart your services and miss blocks to add more keys to your nodes.
This covers creation of your BLS Key(s) that you decided on before starting the guide. We encourage you to run one on shards 1-3 instead of just 0.
Here you'll be creating the keys, creating a folder, and copying them into the proper folders. You may want to store a backup of these files as well.
To keep things simple, set up a password file before you begin. This will make it easy to copy the password to the required .pass files.
cd ~/harmony echo -E 'password' > blskey.pass
To create BLS Keys after you've completed the toolbox installation:
./hmy keys generate-bls-keys --count 10 --shard 1 --passphrase-file blskey.pass
This will create .key files in your ~/harmony directory. Copy those key files to your ~/harmony/.hmy/blskey folder.
text copy cp *.key ~/harmony/.hmy/blskeys
The last step to use your blskey.pass file is to edit your harmony.conf file and setup the path.
Change the line
PassFile =  to read:
PassFile = "./blskey.pass"
Save and exit nano (Ctrl+X y enter)
Using your admin transfer tool of choice, transfer your .key and .pass files to your home pc and store them securely. The key and pass files are all you need backed up to quickly restore a node. Once you create keys for a shard you can save them and re-use them when needed. They do not need to be created again once you have working copies backed up.
We suggest building a folder that contains a folder for each shard and storing your keys in there.
You're ready to hit our next section which you'll use along side the official harmony documentation to install. Each chapter in the next section matches up to the official Harmony docs website. Read our notes on what to do before you go through their pages so you can avoid a lot of unneccessary information.