AWS – Database

23

Database

27

Provides

  • fully-managed relational and NoSQL database services
  • in-memory caching as a service
  • a petabyte-scale data-warehouse solution.

RDS Relational Database Service

  • Amazon Relational Database Service (Amazon RDS) is a web service
  • manage relational databases in the cloud.
  • Amazon RDS provides six familiar database engines to choose from, including Amazon Aurora, PostgreSQL, MySQL, MariaDB, Oracle, and Microsoft SQL Server.

Amazon RDS

Amazon Relational Database service (RDS) is a web service used to manage relational database in the AWS cloud.

It provide a cost-effective service that allow organization to launch secure and highly available production ready database in few minute.

Amazon RDS manages time-consuming administration such as backup, software patching, automatic failure detection and recovery.

Organizations can add security to their database packages by using AWS IAM to define users and permissions.

Amazon RDS components

  • DB instances
  • Regions and Availability Zones
  • Security Groups
  • DB Parameter Groups
  • DB Option Groups

DB instances

DB instance – Basic Building block of Amazon RDS.

A DB instance is an isolated database environment in the cloud.

It contain multiple user-created databases and can be access by using same tools and application.

DB instance is created and modified by using the AWS Command Line Interface, Amazon RDS API or AWS Management Console.

DB Engine – Each DB instance runs a DB engine.

It support DB engines such as MySQL, MariaDB, PostgreSQL, Oracle and Microsoft SQL server.

Each DB engine has its own supported features and set of parameters (DP Parameters Groups) for controlling and managing databases.

DB Engine – MySQL

MySQL is one of the most popular open source databases in the world.

it is used to power a wide range of applications, from small personal blogs to some of the largest websites in the world.

Amazon RDS for MySQL currently supports MySQL 5.7, 5.6, 5.5, and 5.1.

DB Engine – PostgreSQL

PostgreSQL is a widely used open source database engine with a very rich set of features and advanced functionality.

Amazon RDS supports DB Instances running several versions of PostgreSQL.

Amazon RDS supports multiple releases of PostgreSQL, including 9.5. x, 9.4. x, and 9.3. x.

DB Engine – MariaDB

Amazon RDS recently added support for DB Instances running MariaDB.

MariaDB is a popular open source database engine built by the creators of MySQL and enhanced with enterprise tools and functionality.

MariaDB adds features that enhance the performance, availability, and scalability of MySQL.

DB Engine – Oracle

Oracle is the one of the most popular relational databases used in the enterprise and is fully supported by Amazon RDS.

Amazon RDS supports DB instances running several editions of Oracle 11g and oracle 12c

Amazon RDS support three different editions of the popular database engine: Standard edition one, Standard edition and Enterprise edition.

DB Engine – Oracle

Edition     Performance  Multi-AZ  Encryption

Standard one  ++++  Yes  KMS

Standard  ++++++++  Yes  KMS

Enterprise  ++++++++  Yes  KMS & TDE

DB instances

DB Engine – Microsoft SQL Server

Microsoft SQL server is another very popular relational database used in the enterprise.

Amazon RDS allows Database Administrators (DBAs) to connect to their SQL Server DB instance in the cloud using native tools like SQL server management studio.

Amazon RDS support several version of Microsoft SQL server such as SQL server 2008 R2, SQL server 2012, SQL server 2014.

DB Engine – Microsoft SQL Server

Edition     Performance  Multi-AZ  Encryption

Express  +  No  KMS

Web  ++++  No  KMS

Standard  ++++  Yes  KMS

Enterprise  ++++++++  Yes  KMS & TDE

DB instances

DB instance class – determine the computation and  storage capacity of DB instance.

Each DB instance have 5GB to 6TB of associated storage capacity.

DB instance storage comes in 3 types: Magnetic, General Purpose (SSD) and provisioned IOPS (SSD).

DB instance can be run on virtual private cloud using the Amazon VPC service.

Regions and Availability Zones

Region – is a location of highly available data centers

Availability Zones (AZs) – are multiple-distinct location in every region.

Security Groups

  Security Groups control access to the DB instances.

It specify rules to access the instances by configuring specific range of IP addresses, ports or EC2 security group.

Amazon RDS use 3 types of security group:

  • DB security groups
  • VPC security groups
  • EC2 security groups

DB Parameter Groups

DB Parameter Groups are used to configure DB engine.

It contain engine configuration values which is applied to one or more DB instances of same instance type.

If parameters are not defined by user while creating DB instance, Amazon RDS applies a default DB parameter group.

DB Option Groups

DB engine use DB Option Group to offer additional features to manage databases and to add security.

Amazon RDS use Option Group to enable and configure features.

These interfaces are used to interact with Amazon RDS

  • Amazon RDS Console
  • Command Line Interface
  • Programmatic Interface

Amazon RDS Console

Simple Web-based User Interface.

Console window is used to perform all task, no programming is required.

To access Amazon RDS Console:

Sign in to AWS Management console and Open the Amazon RDS Console at https://console.aws.amazon.com/rds/

Command Line Interface

AWS CLI is an open source tool built on top of AWS SDK.

It provides command for interacting with AWS services.

It give access to the functionality that are available in Amazon RDS API.

Programmatic Interface

Following are the resources used to access Amazon RDS programmatically.

AWS-SDK :- It includes sample codes, libraries, tools documentations and templates.

Amazon RDS API :- provides an application programming interface (API) which is used to automate many of the tasks for managing DB instances and other objects on Amazon RDS.

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