Standalone Aurora Relayer and Refiner

Prerequisites and Dependencies

• x86-64 architecture
• requires Curl
• requires Docker, recommended versions;
  • Docker Engine v20.10.18 and above
• optional AWS Account, if near datalake on AWS S3 to be used
• optional Near Account, for Write Transactions & Custom Signers
• depends on Aurora Relayer2, Web3-compatible relayer server for Aurora
• depends on Aurora Refiner, allows users to download all NEAR Blocks and get all information relevant to Aurora

How to Install and Start

git clone https://github.com/aurora-is-near/standalone-rpc
cd standalone-rpc
git checkout {version tag}
./install.sh

Installer configures standalone-rpc, downloads required Near and Aurora snapshots and starts containers to serve RPC and sync with blockchain. Depending on your network bandwidth and CPU downloading of snapshots and syncing with the chain may take some time. All installation artifacts and chain data are placed under standalone-rpc/srpc2 directory.

Upon installation, the RPC endpoint is served at http://127.0.0.1:20080/ as well as on the public IPs of your computer.

By default, standalone-rpc installer is configured to work on mainnet and near blocks to be consumed from nearcore. See installer usage for more details.

Usage: install.sh [options]
Options
 -n {mainnet|testnet}	network to use, default is mainnet.
 -r {nearcore|datalake}	near source for indexing, default is nearcore.
 -w {number [1-256]}	number of workers used for downloading near snapshots, default is 256.
			NOTE: On some OS and HW configurations, default number of workers may cause high CPU consumption during download.
 -s			if specified then snapshots are ignored during installation, default downloads and uses snapshots.
			NOTE: Ignoring snapshots may cause refiner not to index near chain. This can only be a valid option
			if near source is selected as datalake otherwise refiner will not be sync with near core from scratch.
 -h			prints usage
			
Examples
 ./install.sh -n mainnet -r datalake -s
 AWS_SHARED_CREDENTIALS_FILE=~/.aws/credentials ./install.sh -r datalake -s

How to Stop & Start

After installation completes, standalone-rpc should start to serve RPC and catch up with the network. You can always stop and start standalone-rpc by executing the ./stop.sh or ./start.sh scripts placed under srpc2 directory.

How to Update Containers

The services/containers in this installation is updated automatically. Whenever Aurora releases a new image, it will be downloaded, and services are restarted. In case you would like to use a specific version instead of the latest version, please check out How to use specific version

This is however not true for the included database and chain files. These are only downloaded initially when running ./install.sh. Keep your node running to prevent going out of sync.

How to Use Specific Version

Users who are willing to use a specific Relayer and/or Refiner version other than the latest version, should follow the below steps after installation;

• change directory to installation location

• change the docker image version of the service (relayer/refiner) in docker-compose.yaml file under srpc2

  e.g.: if you prefer to use relayer v2.0.0 instead of v2.1.0 (assuming this is the latest), docker-compose.yaml file should look like

  ...
  relayer:
    image: nearaurora/srpc2-relayer:v2.0.0
  ...

• restart services to have the change take effect

  ./stop.sh && ./start.sh

IMPORTANT: Please note that, for the services you prefer to work with specific version other than latest, you will not receive any hot-fix or feature updates.

How to collect Support Information

Users who are encountering problems and looking for a support for their installations, are encouraged to share some support information which helps us to identify problems. To collect support information, installations with version v2.1.1 (see, From v2.1.0 to v2.1.1 for older versions) and above provides a script called support.sh under srpc2 directory. User can run this script which collects following information;

• OS version
• Docker, Docker-Compose version
• Memory, Disk, CPU Info
• relayer and refiner versions, logs, and container info

Upon running the script a tar ball with the following name support-log-<timestamp>.tar.gz is created under srpc2 directory.

How to Uninstall

cd standalone-rpc
./uninstall.sh

IMPORTANT this operation does the followings

• stops and removes Aurora standalone-rpc related docker containers, volumes and networks
• deletes configuration
• asks user for deletion of data, default does not delete

Write Transactions & Custom Signers

The default installation does not support write transactions. It just sets up a placeholder account and a file for further customizations. To enable write transactions with your account, you need to follow the steps below:

• Create an account on testnet/mainnet and load some NEAR on it.
• Export the account's keypair and name into srpc2/config/relayer/relayer.json (check the original file for format).
• Change the signer value in the srpc2/config/relayer/relayer.yaml to the account's name.
• Restart standalone-rpc.

Good to Know

• Aurora Relayer2 configuration can be changed from srpc2/config/relayer/relayer.yaml. Some configuration changes can be applied without requiring a restart, please see repository page for more details about configuration.
• standalone-rpc uses Nginx as a reverse-proxy before Aurora Relayer2 RPC endpoints. To change Nginx configuration, edit the config file srpc2/config/nginx/endpoint.conf, and restart standalone-rpc

Migration and Update of Installation

from v2.0.2 to v2.1.0

For those who already have a running Aurora Standalone RPC with version v2.0.2, the existing Near Data can be reused. Meaning that, installer can skip the time-consuming Near Snapshot download step and use the Near Data of existing installation. Follow the below steps, if you prefer the reuse existing Near Data.

• change directory to previous installation
• checkout version 2.1.0
• run installer with migration option and pass the current directory as parameter

Notes

• You can also use existing data by cloning repo from scratch to another directory. In that case, instead of current directory, you have to pass the path to v2.0.2 installation directory with -m option
• When it is run with migration option, installer does stop the previous installation before starting new one, but it does not do any cleanup on previous installation data or configuration, it is users responsibility to keep or delete them
• Never delete the following directories of the previous installation, after migration they are linked and reused by the new version
  • <previous standalone-rpc path>/near
  • <previous standalone-rpc path>/engine

Example

cd ~/repo/standalone-rpc/
git fetch
git checkout v2.1.0
./install.sh -m .

from v2.1.0 to v2.1.1

• change directory to previous installation
• checkout version 2.1.1
• copy contrib/bin/support.sh to srpc2/support.sh