Overview

A Beta Mirror Node is a node that receives pre-constructed files from the Hedera mainnet. These pre-constructed files include transaction records and account balance files. Transaction records include information about a transaction like the transaction ID, transaction hash, account, etc. The account balance files give you a snashot of the balances for all accounts at a given timestamp.

In this tutorial, you will run your own Beta Mirror Node. You will need to create a Google Cloud Platform account if you do not have one already. The Beta Mirror Node object storage bucket, where you will pull the account balance and transaction data from, is stored in Google Cloud bucket and is configured for requester pays. This means the Beta Mirror Node operator is responsible for the operational costs of reading and retrieving data from the Google Cloud bucket. A Google Cloud Platform account will provide the necessary information to cover the costs of the requests and download of the data.

Requirements

• ​Google Cloud Platform Account​

  • Create a project and link your billing account​

  • Get your accessKey, secretKey, and project ID​

• ​Docker​

  • Check to see if you have it installed from your terminal: docker --version && docker-compose --version

• ​Git​

• ​Hedera Mirror Node Repository

  • You will be prompted to download the repo in the following steps

1. Obtain Google Cloud Platform Requester Pay Information

You will need to grab the secret key, access key, and project ID from your Googe Cloud Platform account

• From the left navigation bar select STORAGE > SETTINGS

• Click on the Interoperability tab and scroll down to the User account HMAC section

• Set your default project

• Click create keys to generate access keys for your account

• You should see the access key and secret columns populate on the table

• You will use these keys to populate the application.yml configuration file in a later step

2. Clone Hedera Mirror Node Repository

• Open your terminal

• Download the hedera-mirror-node repository

git clone https://github.com/hashgraph/hedera-mirror-node

• CD to the hedera-mirror-node folder

cd hedera-mirror-node

3. Configure your application.yml file

• Open the application.yml file found in the root directory with a text editor of your choice

• Input the following information and uncomment each line

Bucket Names

hedera:
  mirror:
    importer: 
      downloader:
        accessKey: GOOG....
        bucketName: hedera-mainnet-streams
        cloudProvider: "GCP"
        secretKey: h+....
        gcpProjectId: 
      network: MAINNET

hedera:
  mirror:
    importer: 
      downloader:
        accessKey: GOOG....
        bucketName: hedera-stable-testnet-streams-2020-08-27
        cloudProvider: "GCP"
        secretKey: h+....
        gcpProjectId: 
      network: TESTNET

4. Start Your Beta Mirror Node

• From the hedera-mirror-node directory, run the following command:

docker-compose up

• Upon sucessfully running your Beta Mirror Node, you will see two folders created in the hedera-mirror-node directory titled data and db

• The data folder contains the information downloaded from the google cloud bucket including account balances and records streams

5. Access Your Beta Mirror Node Data

To access the mirror node data now available to you, enter the hedera-mirror-node_db_1 container.

• Open a new terminal

• To view the hedera-mirror-node_db_1 container ID, enter the following command:

docker ps

• Enter the following command to enter the docker container

docker exec -it <containerId> bash

• Enter the following command to access the database

psql "dbname=mirror_node host=localhost user=mirror_node password=mirror_node_pass port=5432"

• Enter the following command to view the complete list of tables

\dt

Contributing

Contributions are welcome. Please see the contributing guide to see how you can get involved.