Previous Next

Zend_Service_Amazon_Ec2: Instances

Instance Types

Amazon EC2 instances are grouped into two families: standard and High-CPU. Standard instances have memory to CPU ratios suitable for most general purpose applications; High-CPU instances have proportionally more CPU resources than memory (RAM) and are well suited for compute-intensive applications. When selecting instance types, you might want to use less powerful instance types for your web server instances and more powerful instance types for your database instances. Additionally, you might want to run CPU instance types for CPU-intensive data processing tasks.

One of the advantages of EC2 is that you pay by the instance hour, which makes it convenient and inexpensive to test the performance of your application on different instance families and types. One good way to determine the most appropriate instance family and instance type is to launch test instances and benchmark your application.

Note: Instance Types

The instance types are defined as constants in the code. Column eight in the table is the defined constant name

Available Instance Types
Type CPU Memory Storage Platform I/O Name Constant Name
Small

1 EC2 Compute Unit (1 virtual core with 1 EC2 Compute Unit)

1.7 GB

160 GB instance storage (150 GB plus 10 GB root partition)

32-bit

Moderate

m1.small

Zend_Service_Amazon_Ec2_Instance::SMALL
Large

4 EC2 Compute Units (2 virtual cores with 2 EC2 Compute Units each)

7.5 GB

850 GB instance storage (2 x 420 GB plus 10 GB root partition)

64-bit

High

m1.large

Zend_Service_Amazon_Ec2_Instance::LARGE
Extra Large

8 EC2 Compute Units (4 virtual cores with 2 EC2 Compute Units each)

15 GB

1,690 GB instance storage (4 x 420 GB plus 10 GB root partition)

64-bit

High

m1.xlarge

Zend_Service_Amazon_Ec2_Instance::XLARGE
High-CPU Medium

5 EC2 Compute Units (2 virtual cores with 2.5 EC2 Compute Units each)

1.7 GB

350 GB instance storage (340 GB plus 10 GB root partition)

32-bit

Moderate

c1.medium

Zend_Service_Amazon_Ec2_Instance::HCPU_MEDIUM
High-CPU Extra Large

20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each)

7 GB

1,690 GB instance storage (4 x 420 GB plus 10 GB root partition)

64-bit

High

c1.xlarge

Zend_Service_Amazon_Ec2_Instance::HCPU_XLARGE

Running Amazon EC2 Instances

This section describes the operation methods for maintaining Amazon EC2 Instances.

Example #1 Starting New Ec2 Instances

run will launch a specified number of EC2 Instances. run takes an array of parameters to start, below is a table containing the valid values.

Valid Run Options
Name Description Required
imageId

ID of the AMI with which to launch instances.

Yes

minCount

Minimum number of instances to launch. Default: 1

No

maxCount

Maximum number of instances to launch. Default: 1

No

keyName

Name of the key pair with which to launch instances. If you do not provide a key, all instances will be inaccessible.

No

securityGroup

Names of the security groups with which to associate the instances.

No

userData

The user data available to the launched instances. This should not be Base64 encoded.

No

instanceType

Specifies the instance type. Default: m1.small

No

placement

Specifies the availability zone in which to launch the instance(s). By default, Amazon EC2 selects an availability zone for you.

No

kernelId

The ID of the kernel with which to launch the instance.

No

ramdiskId

The ID of the RAM disk with which to launch the instance.

No

blockDeviceVirtualName

Specifies the virtual name to map to the corresponding device name. For example: instancestore0

No

blockDeviceName

Specifies the device to which you are mapping a virtual name. For example: sdb

No

monitor

Turn on AWS CloudWatch Instance Monitoring

No

run will return information about each instance that is starting up.

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->run(array('imageId' => 'ami-509320',
                                   'keyName' => 'myKey',
                                   'securityGroup' => array('web',
                                                            'default')));

Example #2 Rebooting an Ec2 Instances

reboot will reboot one or more instances.

This operation is asynchronous; it only queues a request to reboot the specified instance(s). The operation will succeed if the instances are valid and belong to the user. Requests to reboot terminated instances are ignored.

reboot returns boolean true or false

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->reboot('instanceId');

Example #3 Terminating an Ec2 Instances

terminate shuts down one or more instances. This operation is idempotent; if you terminate an instance more than once, each call will succeed.

terminate returns boolean true or false

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->terminate('instanceId');

Note: Terminated Instances

Terminated instances will remain visible after termination (approximately one hour).

Amazon Instance Utilities

In this section you will find out how to retreive information, the console output and see if an instance contains a product code.

Example #4 Describing Instances

describe returns information about instances that you own.

If you specify one or more instance IDs, Amazon EC2 returns information for those instances. If you do not specify instance IDs, Amazon EC2 returns information for all relevant instances. If you specify an invalid instance ID, a fault is returned. If you specify an instance that you do not own, it will not be included in the returned results.

describe will return an array containing information on the instance.

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->describe('instanceId');

Note: Terminated Instances

Recently terminated instances might appear in the returned results. This interval is usually less than one hour. If you do not want terminated instances to be returned, pass in a second variable of boolean true to describe and the terminated instances will be ignored.

Example #5 Describing Instances By Image Id

describeByImageId is functionally the same as describe but it will only return the instances that are using the provided imageId.

describeByImageId will return an array containing information on the instances thare were started by the passed in imageId

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->describeByImageId('imageId');

Note: Terminated Instances

Recently terminated instances might appear in the returned results. This interval is usually less than one hour. If you do not want terminated instances to be returned, pass in a second variable of boolean true to describe and the terminated instances will be ignored.

Example #6 Retreiving Console Output

consoleOutput retrieves console output for the specified instance.

Instance console output is buffered and posted shortly after instance boot, reboot, and termination. Amazon EC2 preserves the most recent 64 KB output which will be available for at least one hour after the most recent post.

consoleOutput returns an array containing the instanceId, timestamp from the last output and the output from the console.

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->consoleOutput('instanceId');

Example #7 Confirm Product Code on an Instance

confirmProduct returns true if the specified product code is attached to the specified instance. The operation returns false if the product code is not attached to the instance.

The confirmProduct operation can only be executed by the owner of the AMI. This feature is useful when an AMI owner is providing support and wants to verify whether a user's instance is eligible.

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->confirmProduct('productCode', 'instanceId');

Example #8 Turn on CloudWatch Monitoring on an Instance(s)

monitor returns the list of instances and their current state of the CloudWatch Monitoring. If the instance does not currently have Monitoring enabled it will be turned on.

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->monitor('instanceId');

Example #9 Turn off CloudWatch Monitoring on an Instance(s)

monitor returns the list of instances and their current state of the CloudWatch Monitoring. If the instance currently has Monitoring enabled it will be turned off.

$ec2_instance = new Zend_Service_Amazon_Ec2_Instance('aws_key',
                                                     'aws_secret_key');
$return = $ec2_instance->unmonitor('instanceId');
Previous Next
Introduction to Zend Framework
Overview
Installation
Zend_Acl
Introduction
Refining Access Controls
Advanced Usage
Zend_Amf
Introduction
Zend_Amf_Server
Zend_Application
Introduction
Zend_Application Quick Start
Theory of Operation
Examples
Core Functionality
Available Resource Plugins
Zend_Auth
Introduction
Database Table Authentication
Digest Authentication
HTTP Authentication Adapter
LDAP Authentication
Open ID Authentication
Zend_Cache
Introduction
The Theory of Caching
Zend_Cache Frontends
Zend_Cache Backends
Zend_Captcha
Introduction
Captcha Operation
CAPTCHA Adapters
Zend_CodeGenerator
Introduction
Zend_CodeGenerator Examples
Zend_CodeGenerator Reference
Zend_Config
Introduction
Theory of Operation
Zend_Config_Ini
Zend_Config_Xml
Zend_Config_Writer
Zend_Config_Writer
Zend_Console_Getopt
Introduction
Declaring Getopt Rules
Fetching Options and Arguments
Configuring Zend_Console_Getopt
Zend_Controller
Zend_Controller Quick Start
Zend_Controller Basics
The Front Controller
The Request Object
The Standard Router
The Dispatcher
Action Controllers
Action Helpers
The Response Object
Plugins
Using a Conventional Modular Directory Structure
MVC Exceptions
Migrating from Previous Versions
Zend_Currency
Introduction to Zend_Currency
How to Work with Currencies
Migrating from Previous Versions
Zend_Date
Introduction
Theory of Operation
Basic Methods
Zend_Date API Overview
Creation of Dates
Constants for General Date Functions
Working Examples
Zend_Db
Zend_Db_Adapter
Zend_Db_Statement
Zend_Db_Profiler
Zend_Db_Select
Zend_Db_Table
Zend_Db_Table_Row
Zend_Db_Table_Rowset
Zend_Db_Table Relationships
Zend_Db_Table_Definition
Zend_Debug
Dumping Variables
Zend_Dojo
Introduction
Zend_Dojo_Data: dojo.data Envelopes
Dojo View Helpers
Dojo Form Elements and Decorators
Zend_Dojo build layer support
Zend_Dom
Introduction
Zend_Dom_Query
Zend_Exception
Using Exceptions
Zend_Feed
Introduction
Importing Feeds
Retrieving Feeds from Web Pages
Consuming an RSS Feed
Consuming an Atom Feed
Consuming a Single Atom Entry
Modifying Feed and Entry structures
Custom Feed and Entry Classes
Zend_Feed_Reader
Zend_File
Zend_File_Transfer
Validators for Zend_File_Transfer
Filters for Zend_File_Transfer
Migrating from previous versions
Zend_Filter
Introduction
Standard Filter Classes
Filter Chains
Writing Filters
Zend_Filter_Input
Zend_Filter_Inflector
Migrating from Previous Versions
Zend_Form
Zend_Form
Zend_Form Quick Start
Creating Form Elements Using Zend_Form_Element
Creating Forms Using Zend_Form
Creating Custom Form Markup Using Zend_Form_Decorator
Standard Form Elements Shipped With Zend Framework
Standard Form Decorators Shipped With Zend Framework
Internationalization of Zend_Form
Advanced Zend_Form Usage
Zend_Gdata
Introduction
Authenticating with AuthSub
Using the Book Search Data API
Authenticating with ClientLogin
Using Google Calendar
Using Google Documents List Data API
Using Google Health
Using Google Spreadsheets
Using Google Apps Provisioning
Using Google Base
Using Picasa Web Albums
Using the YouTube Data API
Catching Gdata Exceptions
Zend_Http
Introduction
Zend_Http_Client - Advanced Usage
Zend_Http_Client - Connection Adapters
Migrating from previous versions
Zend_Http_Cookie and Zend_Http_CookieJar
Zend_Http_Response
Zend_InfoCard
Introduction
Zend_Json
Introduction
Basic Usage
Advanced Usage of Zend_Json
XML to JSON conversion
Zend_Json_Server - JSON-RPC server
Zend_Layout
Introduction
Zend_Layout Quick Start
Zend_Layout Configuration Options
Zend_Layout Advanced Usage
Zend_Ldap
Introduction
API overview
Usage Scenarios
Tools
Object oriented access to the LDAP tree using Zend_Ldap_Node
Getting information from the LDAP server
Serializing LDAP data to and from LDIF
Zend_Loader
Loading Files and Classes Dynamically
The Autoloader
Resource Autoloaders
Loading Plugins
Zend_Locale
Introduction
Using Zend_Locale
Normalization and Localization
Working with Dates and Times
Supported locales
Migrating from previous versions
Zend_Log
Overview
Writers
Formatters
Filters
Zend_Mail
Introduction
Sending via SMTP
Sending Multiple Mails per SMTP Connection
Using Different Transports
HTML E-Mail
Attachments
Adding Recipients
Controlling the MIME Boundary
Additional Headers
Character Sets
Encoding
SMTP Authentication
Securing SMTP Transport
Reading Mail Messages
Zend_Measure
Introduction
Creation of Measurements
Outputting measurements
Manipulating Measurements
Types of measurements
Zend_Memory
Overview
Memory Manager
Memory Objects
Zend_Mime
Zend_Mime
Zend_Mime_Message
Zend_Mime_Part
Zend_Navigation
Introduction
Pages
Containers
Migrating from Previous Versions
Zend_OpenId
Introduction
Zend_OpenId_Consumer Basics
Zend_OpenId_Provider
Zend_Paginator
Introduction
Usage
Configuration
Advanced usage
Zend_Pdf
Introduction
Creating and Loading PDF Documents
Save Changes to PDF Documents
Working with Pages
Drawing
Interactive Features
Document Info and Metadata
Zend_Pdf module usage example
Zend_ProgressBar
Zend_ProgressBar
Zend_Queue
Introduction
Example usage
Framework
Adapters
Customizing Zend_Queue
Stomp
Zend_Reflection
Introduction
Zend_Reflection Examples
Zend_Reflection Reference
Zend_Registry
Using the Registry
Zend_Rest
Introduction
Zend_Rest_Client
Zend_Rest_Server
Zend_Search_Lucene
Overview
Building Indexes
Searching an Index
Query Language
Query Construction API
Character Set
Extensibility
Interoperating with Java Lucene
Advanced
Best Practices
Zend_Server
Introduction
Zend_Server_Reflection
Zend_Service
Introduction
Zend_Service_Akismet
Zend_Service_Amazon
Zend_Service_Amazon_Ec2
Zend_Service_Amazon_Ec2: Instances
Zend_Service_Amazon_Ec2: Windows Instances
Zend_Service_Amazon_Ec2: Reserved Instances
Zend_Service_Amazon_Ec2: CloudWatch Monitoring
Zend_Service_Amazon_Ec2: Amazon Machine Images (AMI)
Zend_Service_Amazon_Ec2: Elastic Block Stroage (EBS)
Zend_Service_Amazon_Ec2: Elastic IP Addresses
Zend_Service_Amazon_Ec2: Keypairs
Zend_Service_Amazon_Ec2: Regions and Availability Zones
Zend_Service_Amazon_Ec2: Security Groups
Zend_Service_Amazon_S3
Zend_Service_Amazon_Sqs
Zend_Service_Audioscrobbler
Zend_Service_Delicious
Zend_Service_Flickr
Zend_Service_Nirvanix
Zend_Service_ReCaptcha
Zend_Service_Simpy
Introduction
Zend_Service_StrikeIron
Zend_Service_StrikeIron: Bundled Services
Zend_Service_StrikeIron: Advanced Uses
Zend_Service_Technorati
Zend_Service_Twitter
Zend_Service_Yahoo
Zend_Session
Introduction
Basic Usage
Advanced Usage
Global Session Management
Zend_Session_SaveHandler_DbTable
Zend_Soap
Zend_Soap_Server
Zend_Soap_Client
WSDL Accessor
AutoDiscovery
Zend_Tag
Introduction
Zend_Tag_Cloud
Zend_Test
Introduction
Zend_Test_PHPUnit
Zend_Test_PHPUnit_Db
Zend_Text
Zend_Text_Figlet
Zend_Text_Table
Zend_TimeSync
Introduction
Working with Zend_TimeSync
Zend_Tool_Framework
Introduction
Using the CLI Tool
Architecture
Creating Providers to use with Zend_Tool_Framework
Shipped System Providers
Extending and Configuring Zend_Tool_Framework
Zend_Tool_Project
Introduction
Create A Project
Zend Tool Project Providers
Zend_Translate
Introduction
Adapters for Zend_Translate
Using Translation Adapters
Creating source files
Additional features for translation
Plural notations for Translation
Migrating from previous versions
Zend_Uri
Zend_Uri
Zend_Validate
Introduction
Standard Validation Classes
Validator Chains
Writing Validators
Validation Messages
Zend_Version
Getting the Zend Framework Version
Zend_View
Introduction
Controller Scripts
View Scripts
View Helpers
Zend_View_Abstract
Migrating from Previous Versions
Zend_Wildfire
Zend_Wildfire
Zend_XmlRpc
Introduction
Zend_XmlRpc_Client
Zend_XmlRpc_Server
Zend Framework Requirements
Introduction
Zend Framework Coding Standard for PHP
Overview
PHP File Formatting
Naming Conventions
Coding Style
Zend Framework Documentation Standard
Overview
Documentation File Formatting
Recommendations
Recommended Project Structure for Zend Framework MVC Applications
Overview
Recommended Project Directory Structure
Module Structure
Rewrite Configuration Guide
Zend Framework Performance Guide
Introduction
Class Loading
Zend_Db Performance
Internationalization (i18n) and Localization (l10n)
View Rendering
Copyright Information