Sunbird RC
v0.0.14
v0.0.14
  • Learn
    • Introduction
    • Verifiable Credentials
      • What issues will Verifiable Credentials address?
      • What are the key roles in Verifiable Credentials?
      • What are the components of Verifiable Credentials?
      • What are the benefits of Verifiable Credentials?
      • Digital Credentials vs Verifiable Credentials
      • QR code vs Verifiable QR code
      • Use Cases
    • Electronic Registries
      • Evolution of Electronic Registries
      • What issues will Electronic Registries address?
      • Benefits of Electronic Registries
      • Registry vs Database
      • Design Principles
      • Use Cases
    • Sunbird RC Overview
      • Features
      • Core Registry Verbs
      • Why do we need Sunbird RC?
      • What Sunbird RC is and what it's not? (WIP)
      • Core Capabilities
      • Technical Specification Draft
      • Workflows
      • High level architecture
    • Sunbird RC in action
      • Implementations (Work in Progress)
      • Possibilities
  • Use
    • Technical Requirements
    • Releases
    • Setup the Backend
    • Setup the Frontend
    • Leveraging Existing data stores
    • SSO with existing systems
      • Digilocker Meripehchaan SSO
  • Developer Documentation
    • Installation Guide
      • Registry CLI
        • Setup A Registry Instance
      • Manual installation through docker-compose
      • Production setup through Helm
    • Introduction To Schemas
    • Creating Your Own Schemas
    • Schema Configuration
    • Using The APIs
    • Create Schemas With Custom Password
    • Admin Portal
      • Login
      • Get Started
        • Create Schema
        • Attestation Workflows (WIP)
        • VC Template
          • Custom VC Template (WIP)
        • Ownership (WIP)
        • Publish (WIP)
      • Dashboard
    • Configuration
    • Developer Setup
    • VC Verification Module
    • Audit Configuration
    • Custom Keycloak Build
    • Metrics
    • Digilocker Integration
    • Custom QR Code design
    • Notifications Configuration
    • View Templates Configuration
    • Generic Identity And Access Management
    • Backup and Restore
      • PostgreSQL
        • SQL Dump
        • File System Level Backup
        • Continuous Archiving and Point-in-Time Recovery (PITR)
      • Cassandra
        • Snapshot-based backup method
        • Incremental backup method
        • Data Restore
    • Frontend Configurations
    • Frontend - Proxy configuration
  • API Reference
    • Registry
      • Create An Entity
      • Invite An Entity
      • Generate token
      • Generate admin token
      • Get An Entity
      • Get An Entity By Id
      • Update An Entity
      • Create A Property Of An Entity
      • Update A Property Of An Entity
      • Revoke a Credential
      • Delete An Entity
    • Schema
      • Create Schema
      • Get Schema
      • Update Schema
      • Delete Schema
      • Publish A Schema
    • Attestation API
      • Raise An Attestation
      • Get Attestation Certificate
    • Claims API
      • Get All Claims
      • Get Claim by ID
      • Attest A Claim
    • Discovery API
      • Search An Entity
    • File Storage API
      • Upload A File
      • Get Uploaded File
      • Delete A File/ Multiple Files
    • Bulk Issuance API
      • Get Sample Template
      • Upload CSV
      • Get all uploaded Files
      • Download a Report File
    • Metrics APIs
      • Get Count
      • Get Aggregates
    • Other APIs
      • Sign API
      • Verify API
      • Swagger JSON API
      • Health API
  • Reference Solutions
    • Education
      • Education Ecosystem
        • Installation
      • Education Registries
        • Installation
    • Certificate Issuance
      • Installation(WIP)
      • User Guide
    • eLocker
      • High Level Diagram
      • Installation (WIP)
        • Frontend Setup E-locker
      • User Guide
    • Health Registries
      • Organ Registries
        • Frontend Setup
        • Backend Setup
        • User Guide
    • Vaccination Platform
    • Skills & Work Credentials
    • Govt to Person (G2P)
    • Unified Learners Passport (ULP)
      • ULP Capabilities
      • Example Scenario
      • Technical Components (WIP)
      • Demo/Sandbox Links (WIP)
      • Installation Guide (WIP)
        • Frontend Setup
        • Installation through docker-compose
        • Dummy records setup for refrence
  • Links
    • Source Code
    • Releases & Changelogs
    • Website
    • Roadmap
    • Reference links
    • Design
  • Community
    • Discussion Forum
    • Contributing
    • Contributors
    • Contribution Guidebook
    • Code of Conduct
    • Community Events
    • Status By Track
  • HELP
    • Roadmap
    • FAQs
    • Glossary
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On this page
  • Advantages:
  • Disadvantages:
  1. Developer Documentation
  2. Backup and Restore
  3. Cassandra

Snapshot-based backup method

Cassandra offers the nodetool utility, a command-line interface for managing clusters, including the ability to create data snapshots. By using the nodetool snapshot command, you can create snapshots by flushing memtables to disk and creating immutable hard links to SSTables.

Snapshots can be taken per node or across the entire cluster. For cluster-wide snapshots, parallel ssh utilities like pssh can be used, or you can take snapshots of each node individually. It's possible to capture snapshots of all keyspaces, specific keyspaces, or even individual tables within a keyspace. Keep in mind that sufficient free disk space is required on the node to accommodate the snapshot.

It's important to note that this snapshot method does not back up the schema, which must be backed up manually and separately. Here are a few examples of snapshot commands:

Snapshot of all keyspaces:

To capture a snapshot of all keyspaces, run the command:

nodetool snapshot

Snapshot of a single keyspace:

Assuming you have a keyspace named "organization" and you want to name the snapshot, use this command:

nodetool snapshot -t 2023.06.27 organization

Snapshot of a single table:

If you wish to snapshot only the "employee" table within the "organization" keyspace, execute the following command:

nodetool snapshot --table employee organization

After completing the snapshot, you can transfer the snapshot files to other storage locations like AWS S3, Google Cloud, or MS Azure. Remember to back up the schema separately because Cassandra can restore data from a snapshot only when the corresponding table schema exists.

Advantages:

  • Easy to manage and straightforward

  • The nodetool utility in Cassandra offers the nodetool clearsnapshot command for removing snapshot files.

Disadvantages:

  • Taking daily backups of an entire keyspace can be challenging, especially for large datasets.

  • Transferring large snapshot data to secure locations like AWS S3 can be costly.

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Last updated 1 year ago