Setup

Below you will find the instructions on how to manually setup your Realio Network full node.

REQUIREMENTS Before starting, make sure you read the overview to make sure your hardware meets the necessary requirements.

1. Build the software​

In your terminal, run the following:

# Make sure we are inside the home directory
cd $HOME

# Clone the Realio Network software
git clone https://github.com/realiotech/realio-network.git && cd realio-network

# Checkout the correct tag
git checkout tags/v0.9.3

# Build the software
# If you want to use the default database backend run
make install

If the software is built successfully, the realio-networkd executable will be located inside your $GOBIN path. If you setup your environment variables correctly in the previous step, you should also be able to run it properly. To check this, try running:

realio-networkd version --long

# example output:
...
name: realionetwork
server_name: realio-networkd
version: 0.9.3
commit: 505655e1c64ecf2b73fba4147d94d302d7cee96a
go: go version go1.20 linux/amd64

2. Initialize the Realio Network working directory​

Configuration files and chain data will be stored inside the $HOME/.realio-network directory by default. In order to create this folder and all the necessary data we need to initialize a new full node using the realio-network init command.

Starting from v0.15.0, you are now able to provide a custom seed when initializing your node. This will be particularly useful because, in the case that you want to reset your node, you will be able to re-generate the same private node key instead of having to create a new node.

In order to provide a custom seed to your private key, you can do as follows:

  1. Get a new random seed by running:

realio-networkd keys add node --dry-run

 # Example
 # realio-networkd keys add node --dry-run
 # - name: node
 #   type: local
 #   address: realio1r0enplsg8sxf44nsx0tehs80garxju98kdyegs
 #   pubkey: '{"@type":"/ethermint.crypto.v1.ethsecp256k1.PubKey","key":"A95JbKv+qWRcxFzJ6xB/loe3jb8OcBtTLyOYZeAGjoC6"}'
 #   mnemonic: ""
 #
 #
 # **Important** write this mnemonic phrase in a safe place.
 # It is the only way to recover your account if you ever forget your password.
 #
 # sort draw stumble motor fuel cement grain drip keep swim team direct tired pink clinic figure tiny december giant obvious clump chest

This will create a new key without adding it to your keystore, and output the underlying seed.

  1. Run the init command using the --recover flag:

realio-networkd init <your_node_moniker> --recover --chain-id <the_chain_id>

You can choose any moniker value you like. It is a public name for the node such as 'world-node-1', and will be saved in the config.toml under the .realio-network/ working directory.

  1. Insert the previously outputted secret recovery phrase (mnemonic phrase):

> Enter your bip39 mnemonic
sort curious village display voyager oppose dice idea mutual inquiry keep swim team direct tired pink clinic figure tiny december giant obvious clump chest

This will generate the working files in ~/.realio-network

TIP By default, running without the flag will randomly generate a . There is no way to regenerate this key if you lose it.\ We recommend running this command with the so that you can regenerate the same from the secret recovery phrase (mnemonic phrase).

3. Get the genesis file​

To connect to an existing network, or start a new one, a genesis file is required. The file contains all the settings telling how the genesis block of the network should look like.

  • If you are setting up a testnet node refer to this procedure

  • If you are setting up a mainnet node refer to this procedure

4. Setup seeds​

Next, you'll need to tell your node how to connect with other nodes that are already present on the network. In order to do so, you will use the seeds and persistent_peers values of the ~/.realio-network/config/config.toml file.

A seed node is a node who relays the addresses of other peers which they know of. These nodes constantly crawl the network to try to get more peers. The addresses which the seed node relays get saved into a local address book. Once these are in the address book, you will connect to those addresses directly.

  • If you are looking for testnet seeds please check here: Testnet seeds

  • If you are looking for mainnet seeds please check here: Mainnet seeds

5. State sync​

The Realio Network has support for CometBFT's state sync. This feature allows new nodes to sync with the chain extremely fast, by downloading snapshots created by other full nodes. Here below, you can find the links to check for the correct procedure depending on which network you're setting up your node:

  • If you are setting up state-sync for the testnet follow the State sync testnet procedure.

Changing state sync height​

If you change the state sync height, you will need to perform these actions before trying to sync again:

  • If you're running a validator node:

    1. Backup the ~/.realio-network/data/priv_validator_state.json;

    2. Run realio-networkd unsafe-reset-all;

    3. Restore the priv_validator_state.json file.

    4. Restart the node.

  • If you're running a full node:

    1. Run realio-networkd unsafe-reset-all;

    2. Restart the node.

6. (Optional) Edit snapshot config​

Currently, the snapshot feature is disabled by the default. If it is enabled, your node will periodically create snapshots of the chain state and make them public, allowing other nodes to quickly join the network by syncing the application state at a given height.

If you want to provide other nodes with snapshots, you can do this by editing a couple of things inside your ~/.realio-network/config/app.toml file, under the state-sync section:

# snapshot-interval specifies the block interval at which local state sync snapshots are
# taken (0 to disable). Must be a multiple of pruning-keep-every.
snapshot-interval = 500

# snapshot-keep-recent specifies the number of recent snapshots to keep and serve (0 to keep all).
snapshot-keep-recent = 2

Note: Make sure that snapshot-interval is a multiple of pruning-keep-every in the base section

pruning-keep-recent = "100"
pruning-keep-every = "500"
pruning-interval = "10"

You can find out more about pruning here.

7. Open the proper ports​

Now that everything is in place to start the node, the last thing to do is to open up the proper ports.

Your node uses various different ports to interact with the rest of the chain. Particularly, it relies on:

  • port 26656 to listen for incoming connections from other nodes;

  • port 26657 to expose the Tendermint RPC service to clients.

A part from those, it also uses:

  • port 9090 to expose the gRPC service that allows clients to query the chain state;

  • port 1317 to expose the REST APIs service.

  • port 8545 Ethereum JSON-RPC to query Ethereum-formatted transactions and blocks or send Ethereum txs using JSON-RPC

  • port 8546 Ethereum Websocket to subscribe to Ethereum logs and events emitted in smart contracts.

While opening any ports are optional, it is beneficial to the whole network if you open port 26656. This would allow new nodes to connect to you as a peer, making them sync faster and the connections more reliable.

For this reason, we will be opening port 26656 using ufw. By default, ufw is not enabled. In order to enable it please run the following:

# running this should show it is inactive
sudo ufw status

# Turn on ssh if you need it
sudo ufw allow ssh

# Accept connections on the ports listed above.
# Some are optional depending on the usage of the node.
sudo ufw allow from any to any port 26656 proto tcp
sudo ufw allow from any to any port 26657 
sudo ufw allow from any to any port 1317 
sudo ufw allow from any to any port 9090
sudo ufw allow from any to any port 8545
sudo ufw allow from any to any port 8546

# enable ufw
sudo ufw enable

# check ufw is running
sudo ufw status

A note on the optionality of some of the ports: You do not need to open 8545 for example if you are not exposing the ETH JSON RPC. Our discord channel is a good place to ask about this.

8. Start the Realio Network node​

After setting up the binary and opening up ports, you are now finally ready to start your node:

# Run Realio Network full node basic start command
realio-networkd start

# Run Realio Network full node with options
realio-networkd start --log_level info --minimum-gas-prices=0.0001ario --json-rpc.api eth,txpool,personal,web3....

# help command
realio-networkd start --help

The full node will connect to the peers and start syncing. You can check the status of the node by executing:

# Check status of the node
realio-networkd status

You should see an output like the following one:

{"NodeInfo":{"protocol_version":{"p2p":"8","block":"11","app":"0"},"id":"904ee3c96547fb33c5e3112bdd5d292f2c53efd2","listen_addr":"tcp://0.0.0.0:26656","network":"realionetworktest_2022-1","version":"0.34.19","channels":"40202122233038606100","moniker":"realio-val-1","other":{"tx_index":"on","rpc_address":"tcp://0.0.0.0:26657"}},"SyncInfo":{"latest_block_hash":"0725BD0D5802C85917C94024D4C704DEBFB6E11F807DD0EE40E993C7F4F8E47C","latest_app_hash":"553BDF06736EA04584B89257E65DA5A385160F0C7FF9FB03DD8CB940E8AA5049","latest_block_height":"580978","latest_block_time":"2022-09-25T15:53:06.040173319Z","earliest_block_hash":"267AC75E85FE5E68DB927D8D4C3DFFE68C1AC9746F5DAE6C10D73B7B428CBFC2","earliest_app_hash":"E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855","earliest_block_height":"1","earliest_block_time":"2022-08-22T14:04:58.282183469Z","catching_up":false},"ValidatorInfo":{"Address":"F137086F1A90EB4AB4696980F11F1FED703E8C00","PubKey":{"type":"tendermint/PubKeyEd25519","value":"yYG/hdRMITlG/4AC4ASA9pQMprHPor5ttE+WdZbXCew="},"VotingPower":"1000000"}}

If you see that the catching_up value is false under the sync_info, it means that you are fully synced. If it is true, it means your node is still syncing. You can get the catching_up value by simply running:

realio-networkd status 2>&1 | jq "{catching_up: .SyncInfo.catching_up}"

# Example
# $ realio-networkd status 2>&1 | jq "{catching_up: .SyncInfo.catching_up}"
# {
#   "catching_up": false
# }

After your node is fully synced, you can consider running your full node as a validator node.

9. (Optional) Configure the background service​

To allow your realio network node instance to run in the background as a service you need to execute the following command:

# sudo vim /etc/systemd/system/realio-network.service

[Unit]
Description=Realio Network Full Node
After=network-online.target

[Service]
User=$USER
ExecStart=/path/to/gobin/realio-networkd start
Restart=always
RestartSec=3
LimitNOFILE=4096

[Install]
WantedBy=multi-user.target

Once you have successfully created the service, you need to enable it. You can do so by running:

systemctl enable realio-network

After this, you can run it by executing:

systemctl start realio-network

Service operations​

Check the service status​

If you want to see if the service is running properly, you can execute

sudo systemctl status realio-network

If everything is running smoothly you should see something like

$ systemctl status realio-network
● realio-network.service - Realio Network Full Node
   Loaded: loaded (/etc/systemd/system/realio-networkd.service; enabled; vendor preset:
   Active: active (running) since Wed 2021-12-08 17:54:59 UTC; 3 sec ago
 Main PID: 160776 (realio-networkd)
    Tasks: 9 (limit: 1136)
   Memory: 296.4M
   CGroup: /system.slice/realio-networkd.service
           └─11318 /root/go/bin/realio-networkd start

Check the node logs​

If you want to see the current logs of the node, you can do so by running the command:

sudo journalctl -u realio-network -f

If you do not see any log output, and the status command above returns no errors, try restarting the journalctl daemon:

sudo systemctl restart systemd-journald

Stopping the service​

If you wish to stop the service from running, you can do so by running

sudo systemctl stop realio-network

To check the successful stop, execute systemctl status realio-network. This should return

$ systemctl status realio-network
● realio-network.service - Realio Network Full Node
   Loaded: loaded (/etc/systemd/system/realio-network.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2021-12-08 17:54:59 UTC; 3 sec ago
  Process: 160776 ExecStart=/root/go/bin/realio-network start (code=exited, status=143)
 Main PID: 160776 (code=exited, status=143)

10. Cosmovisor​

In order to do automatic on-chain upgrades we will be using cosmovisor. Please check out Using Cosmovisor for information on how to set this up.

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