Skip to main content

ParaTime Client Node

info

These instructions are for setting up a ParaTime client node which only observes ParaTime activity and can submit transactions. If you want to run a ParaTime node instead, see the instructions for running a ParaTime node. Similarly, if you want to run a validator or a non-validator node instead, see the instructions for running a validator node or instructions for running a non-validator node.

tip

If you are looking for some concrete ParaTimes that you can run, see the list of ParaTimes and their parameters.

tip

Oasis Core refers to ParaTimes as runtimes internally, so all configuration options will have runtime in their name.

This guide will cover setting up your ParaTime client node for the Oasis Network. This guide assumes some basic knowledge on the use of command line tools.

Prerequisites

Before following this guide, make sure you've followed the Prerequisites and Run a Non-validator Node sections and have:

  • Oasis Node binary installed and configured on your system.
  • The chosen top-level /node/ working directory prepared. In addition to etc and data directories, also prepare the following directories:
    • bin: This will store binaries needed by Oasis Node for running the ParaTimes.
    • runtimes: This will store the ParaTime bundles.
tip

Feel free to name your working directory as you wish, e.g. /srv/oasis/.

Just make sure to use the correct working directory path in the instructions below.

  • Genesis file copied to /node/etc/genesis.json.
tip

Reading the rest of the ParaTime node setup instructions may also be useful.

info

To speed up bootstraping your new node, we recommend copying node's state from your existing node or syncing it using state sync.

tip

Running a ParaTime client node doesn't require registering an entity or its nodes.

It also doesn't require having any stake.

tip

Running a client node for a ParaTime that runs in a Trusted Execution Environment (TEE) doesn't require having the same TEE available on the ParaTime client node.

For example, running a ParaTime client node for an SGX-enabled ParaTime like Cipher doesn't require having SGX on the ParaTime client node.

The ParaTime Bundle

In order to run a ParaTime node you need to obtain the ParaTime bundle that needs to come from a trusted source. The bundle (usually with an .orc extension that stands for Oasis Runtime Container) contains all the needed ParaTime binaries together with the identifier and version metadata to ease deployment.

When the ParaTime is running in a Trusted Execution Environment (TEE) the bundle will also contain all the required artifacts (e.g. SGXS version of the binary and any enclave signatures).

danger

Like the genesis document, make sure you obtain these from a trusted source.

caution

Compiling the ParaTime Binary from Source Code

In case you decide to build the ParaTime binary from source yourself, make sure that you follow our guidelines for deterministic compilation to ensure that you receive the exact same binary.

Install ParaTime Bundle

For each ParaTime, you need to obtain its bundle and install it to the runtimes subdirectory of your node's working directory.

info

For example, for the Cipher ParaTime, you would have to obtain the cipher-paratime.orc bundle and install it to /node/runtimes/cipher-paratime.orc.

Install Bubblewrap Sandbox (at least version 0.3.3)

ParaTime client nodes execute ParaTime binaries inside a sandboxed environment provided by Bubblewrap. In order to install it, please follow these instructions, depending on your distribution:

sudo apt install bubblewrap

Ensure you have a new enough version by running:

bwrap --version
caution

Ubuntu 18.04 LTS (and earlier) provide overly-old bubblewrap. Follow Other Distributions section on those systems.

Configuration

In order to configure the ParaTime client node, create the /node/etc/config.yml file with the following content:

datadir: /node/data

log:
level:
default: info
tendermint: info
tendermint/context: error
format: JSON

genesis:
file: /node/etc/genesis.json

consensus:
tendermint:
p2p:
# List of seed nodes to connect to.
# NOTE: You can add additional seed nodes to this list if you want.
seed:
- "{{ seed_node_address }}"

runtime:
mode: client
paths:
# Paths to ParaTime bundles for all of the supported ParaTimes.
- "{{ runtime_orc_path }}"

Before using this configuration you should collect the following information to replace the variables present in the configuration file:.

  • {{ seed_node_address }}: The seed node address in the form ID@IP:port.
  • {{ runtime_orc_path }}: Path to the ParaTime bundle of the form /node/runtimes/foo-paratime.orc.

Starting the Oasis Node

You can start the node by running the following command:

oasis-node --config /node/etc/config.yml

Checking Node Status

To ensure that your node is properly connected with the network, you can run the following command after the node has started:

oasis-node control status -a unix:/node/data/internal.sock