Mastering CloudForms Automation. An Essential Guide for Cloud Administrators - Helion
ebook
Autor: Peter McGowanISBN: 978-14-919-5718-9
stron: 432, Format: ebook
Data wydania: 2016-08-22
Księgarnia: Helion
Cena książki: 92,65 zł (poprzednio: 107,73 zł)
Oszczędzasz: 14% (-15,08 zł)
Learn how to work with the Automate feature of CloudForms, the powerful Red Hat cloud management platform that lets you administer your virtual infrastructure, including hybrid public and private clouds. This practical hands-on introduction shows you how to increase your operational efficiency by automating day-to-day tasks that now require manual input.
Throughout the book, author Peter McGowan provides a combination of theoretical information and practical coding examples to help you learn the Automate object model. With this CloudForms feature, you can create auto-scalable cloud applications, eliminate manual decisions and operations when provisioning virtual machines and cloud instances, and manage your complete virtual machine lifecycle.
In six parts, this book helps you:
- Learn the objects and concepts for developing automation scripts with CloudForms Automate
- Customize the steps and workflows involved in provisioning virtual machines
- Create and use service catalogs, items, dialogs, objects, bundles, and hierarchies
- Use CloudForm’s updated workflow to retire and delete virtual machines and services
- Orchestrate and coordinate with external services as part of a workflow
- Explore distributed automation processing as well as argument passing and handling
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Spis treści
Mastering CloudForms Automation. An Essential Guide for Cloud Administrators eBook -- spis treści
- Preface
- A Brief Word on Terminology
- Who Should Read This Book?
- Why I Wrote This Book
- Versions and Releases
- Navigating This Book
- Part I, Working with CloudForms Automate
- Part II, Provisioning Virtual Machines
- Part III, Working with Services
- Part IV, Retirement
- Part V, Integration
- Part VI, Miscellaneous
- Online Resources
- Official Documentation
- Code Repositories
- Forums
- Blogs
- Conventions Used in This Book
- Using Code Examples
- Safari Books Online
- How to Contact Us
- Acknowledgments
- I. Working with CloudForms Automate
- 1. Introduction to CloudForms
- What Is CloudForms?
- Providers
- Cloud Providers
- Infrastructure Providers
- Configuration Management Providers
- Container Providers
- Mixing and Matching Providers
- Company XYZ Inc.
- The Capabilities of CloudForms
- Insight
- Control
- Automate
- Service catalog
- Integrate
- The CloudForms Appliance
- Ruby and Rails
- Projects, Products, and Some History
- ManageIQ (the Project)
- Red Hat CloudForms (the Product)
- CloudForms Management Engine (the Appliance)
- Summary
- Further Reading
- 2. Introduction to the Automate Datastore
- The Automate Explorer
- The Automate Datastore
- Domains
- Domain Priority
- Importing/Exporting Domains
- Copying Objects Between Domains
- Importing Old Format Exports
- Namespaces
- Classes
- Schemas
- Adding or Editing a Schema
- Relationships
- Instances
- Methods
- Summary
- Further Reading
- 3. Writing and Running Our Own Automation Scripts
- Creating the Environment
- Adding a New Domain
- Adding a Namespace
- Adding a Class
- Editing the Schema
- Hello, World!
- Adding a New Instance
- Adding a New Method
- Running the Instance
- Exit Status Codes
- Summary
- Creating the Environment
- 4. Using Schema Variables
- Preparing the Schema
- The Instance
- The Method
- Running the Instance
- Summary
- 5. Working with Virtual Machines
- Custom Attributes
- Creating the Service Dialog
- Creating the Instance and Method
- The Code
- Creating the /System Entry Point
- Running Automation Scripts from a Button
- Creating the Button Group
- Creating the Button
- Running the Instance
- Summary
- Further Reading
- 6. Peeping Under the Hood
- A Little Rails Knowledge (Goes a Long Way)
- Plain Old Ruby
- Model-View-Controller
- Active Record Associations
- Rails Helper Methods (.find_by_*)
- Service Models
- Service Model Object Properties
- Attributes
- Virtual Columns
- Associations
- Methods
- Distributed Ruby
- Summary
- Further Reading
- A Little Rails Knowledge (Goes a Long Way)
- 7. $evm and the Workspace
- $evm.log
- $evm.root
- $evm.object, $evm.current, and $evm.parent
- $evm.vmdb
- Single-Argument Form
- Two-Argument Form
- $evm.execute
- Examples
- Creating a tag if one doesnt already exist
- Sending an email
- Creating a new automation request
- Examples
- $evm.instantiate
- Summary
- Further Reading
- 8. A Practical Example: Enforcing Anti-Affinity Rules
- Task
- Solution
- relocate_vm
- send_email
- Main Code
- Summary
- Further Reading
- 9. Using Tags from Automate
- Creating Tags and Categories
- Assigning and Removing Tags
- Testing Whether an Object Is Tagged
- Retrieving an Objects Tags
- Searching for Specifically Tagged Objects
- Practical Example
- Getting the List of Tag Categories
- Getting the List of Tags in a Category
- Finding a Tags Name, Given Its Description
- Finding a Specific Tag (MiqAeServiceClassification) Object
- Deleting a Tag Category
- Summary
- Further Reading
- 10. Investigative Debugging
- InspectMe
- object_walker
- Black or Whitelisting Associations
- object_walker_reader
- Rails Console
- Rails db
- Summary
- Further Reading
- 11. Ways of Entering Automate
- Buttons and Simulation
- RESTful API
- Control Policy Actions
- Alerts
- Service Dialog Dynamic Elements
- Finding Out How Our Method Has Been Called
- Summary
- Further Reading
- 12. Requests and Tasks
- The Need for Approval
- Request and Task Objects
- Approval
- Object Class Ancestry
- Context
- Object Contents
- Dumping the Object Contents
- The request object
- The task object
- Comparing the Objects
- Dumping the Object Contents
- Summary
- Further Reading
- 13. State Machines
- Building a State Machine
- State Machine Schema Field Columns
- Value (instance)/Default Value (schema)
- On Entry
- On Exit
- On Error
- Max Retries
- Max Time
- State Machine Example
- State Machine Schema Field Columns
- State Variables
- Setting State Result
- State Retries
- Getting the State Machine Name
- Getting the Current Step in the State Machine
- Getting the on_entry, on_exit, on_error Status State
- State Machine Enhancements in CloudForms 4.0
- Error Recovery
- Skipping States
- Jumping to a Specific State
- Nested State Machines
- Saving Variables Between State Retries
- Summary
- Further Reading
- Building a State Machine
- 14. More Advanced Schema Features
- Messages
- Specifying Our Own Messages
- Assertions
- Collections
- Summary
- Messages
- 15. Event Processing
- Event Processing Component Parts
- The Event Stream Object
- The Event Switchboard
- Event stream namespace
- Event stream source
- Event type
- Event Handlers
- Catching and Handling External Events
- Event Catching
- Event Processing
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
- Creating and Processing Internal Events
- Step 6
- Step 7
- Step 8
- Step 9
- Step 10
- Event-Initiated Control Policy Processing
- Step 11
- Step 12
- Event-Initiated Alert Processing
- Step 13
- Step 14
- Event-Initiated Automation Request Workflows
- Step 1: The request_created Event
- Step 1.1
- Step 1.2
- Step 1.3
- Step 1.4
- Step 1.5
- Step 1.6
- Step 2: The request_approved Event
- Step 2.1
- Step 2.2
- Step 2.3
- Step 2.4
- Step 3: The request_starting Event
- Step 3.1
- Step 3.2
- Step 3.3
- Step 3.4
- Step 3.5
- Step 4: Automation Task Processing
- Step 1: The request_created Event
- Extending Automate Event Handling
- Adding a New Automation Instance to /System/Event/EmsEvent/
- Summary
- Next Steps
- Event Processing Component Parts
- II. Provisioning Virtual Machines
- 16. Provisioning a Virtual Machine
- The Provisioning Process
- Group-Specific Considerations, and Common Processing
- Summary
- 17. The Provisioning Profile
- Location
- Schema
- Customizing the Profile
- Profile Processing in Detail
- The Provisioning Dialog
- VM Name (Pass 1)
- Approval
- Approved, pending, or denied
- Quota
- VM Name (Pass 2)
- VM Provisioning State Machine
- Summary
- Further Reading
- 18. Approval
- Approval Workflow
- Request Created Event
- Methods
- validate_request
- pending_request
- approve_request
- Request Pending Event
- Overriding the Defaults
- Template Tagging
- VM ProvisioningRelated Email
- Summary
- Further Reading
- Approval Workflow
- 19. Quota Management
- Quotas in Cloudforms 4.0
- Quota Source
- Alternative Quota Sources
- Defining a quota in the state machines schema (the model)
- Defining a quota using tags
- Quota Source
- Quota Workflow
- Summary
- Further Reading
- Quotas in Cloudforms 4.0
- 20. The Options Hash
- Request Object (miq_provision_request)
- Task Object (miq_provision)
- Adding Network Adapters
- Correlation with the Provisioning Dialog
- Adding Our Own Options: The ws_values Hash
- Summary
- 21. The Provisioning State Machine
- State Machine Schema
- Filling in the Blanks
- Summary
- 22. Customizing Virtual Machine Provisioning
- Scenario
- Task
- Methodology
- Step 1: Extend the State Machine
- Copy the state machine
- Edit the schema
- Add the new states
- Adjust the sequence
- Step 2: Disable Auto-Power-On
- Copy the method
- Edit the method
- Step 3: Create Our New Instances and Methods
- add_disk
- start_vm
- Step 4: Add Our New Instances to the Copied State Machine
- Step 5: Provision a Virtual Machine
- Step 1: Extend the State Machine
- Summary
- Further Reading
- 23. Virtual Machine Naming During Provisioning
- VM Name-Related Provisioning Options
- Inputs to the Naming Process
- vm_name
- vm_prefix
- hostname
- linux_host_name
- sysprep_computer_name
- miq_force_unique_name
- Outputs from the Naming Process
- vm_target_name
- vm_target_hostname
- Inputs to the Naming Process
- Name Processing
- Provisioning a Single VM or Instance
- Provisioning Multiple VMs or Instances in a Single Request
- Customizing the Naming Process
- Summary
- Further Reading
- VM Name-Related Provisioning Options
- 24. Virtual Machine Placement During Provisioning
- Placement Methods
- Method Description
- Customising Placement
- Using Alternative Placement Methods
- Summary
- Further Reading
- 25. The Provisioning Dialog
- Tabs and Input Fields
- Dialog YAML
- Selection of VM Provisioning Dialog
- Group-Specific Dialogs
- Example: Expanding the Dialog
- Copy the existing dialog
- Create a group profile
- Testing the provisioning dialog
- Example: Expanding the Dialog
- Summary
- Further Reading
- 26. Virtual Machine Provisioning Objects
- Object Overview
- The Provision Request Object
- Request Context
- Task Context
- The Provision Task Object
- The Source Object
- The Destination Object
- Summary
- 27. Creating Provisioning Requests Programmatically
- Making the Call
- Argument List
- version
- templateFields
- vmFields
- requester
- tags
- additionalValues (aka ws_values)
- emsCustomAttributes
- miqCustomAttributes
- Setting Placement Options
- Summary
- Further Reading
- 28. Integrating with Satellite 6 During Provisioning
- Hosts and Content Hosts
- The Satellite 6 Host Entry
- Non-CloudForms Preparation
- Creating the Host Groups in Satellite 6
- Creating the Activation Keys in Satellite 6
- Adding an SSH Key to the VMware Template
- Installing and Configuring Ansible on the CloudForms Appliance
- Modifying the CloudForms Provisioning Workflow
- RegisterSatellite
- ActivateSatellite
- Testing the Integration: Provisioning a New VM
- Summary
- Further Reading
- III. Working with Services
- 29. Service Dialogs
- Dialog Elements
- Dynamic Elements
- Populating the Dynamic Fields
- Read-Only and Protected Elements
- Programmatically Populating a Read-Only Text Box
- Element Validation
- Using the Input from One Element in Another Elements Dynamic Method
- Example
- Requirement
- Solution
- Example
- Summary
- Further Reading
- 30. The Service Provisioning State Machine
- Class and Instances
- Passing Service Dialog Options to the Child and Grandchild Tasks
- Accessing the Service Dialog Options
- ConfigureChildDialog
- Summary
- VM Naming for Services
- 31. Catalog{Item,Bundle}Initialization
- CatalogItemInitialization
- Service Dialog Element Naming Convention
- Single options hash key
- Single tag
- Service Dialog Element Naming Convention
- CatalogBundleInitialization
- Summary
- Further Reading
- CatalogItemInitialization
- 32. Approval and Quota
- Triggering Events
- Approval
- Customizing Approval
- Quota
- Summary
- 33. Creating a Service Catalog Item
- The Service Dialog
- Finding the Correct Element Names
- Searching the provisioning dialog
- Examining the options hash during provisioning
- Some commonly used element names
- Creating the Service Dialog
- Finding the Correct Element Names
- Creating the Service Catalog Item
- Create a Catalog
- Creating the Catalog Item
- Ordering the Catalog Item
- Summary
- Further Reading
- The Service Dialog
- 34. Creating a Service Catalog Bundle
- Creating the Service Dialog for the Bundle
- Preparing the Service Catalog Items
- Creating the Service Catalog Bundle
- Ordering the Catalog Bundle
- Summary
- Further Reading
- 35. Service Objects
- Object Structure
- Service Template Provision Task
- Source
- Destination
- Service Template Provisioning Request
- Child miq_request_task
- Service resource
- Source
- Destination
- Grandchild miq_request_task
- Source
- Destination
- Service Template Provision Task
- Summary
- Object Structure
- 36. Log Analysis During Service Provisioning
- Initial Request
- Profile Lookup
- Request Processing and Approval
- Service Template Provisioning Tasks
- VM Provisioning Task
- Service State Machine CheckProvisioned
- VM State Machine CheckProvisioned
- Virtual Machine Provision Complete
- Service Provision Complete
- Summary
- 37. Service Hierarchies
- Organizing Our Services
- Creating an Empty Service
- State machine
- Method
- Service dialog
- Putting it all together
- Creating an Empty Service
- Adding VMs and Services to Existing Services
- Adding the Button
- Button dialog
- Dialog element method
- Button method
- Putting it all together
- Adding the Button
- Summary
- Organizing Our Services
- 38. Service Reconfiguration
- Reconfigure Entry Point
- Service Design
- Adding a Configuration Management Provider
- Automate Datastore Components
- Creating the Namespaces and State Machines
- Email Classes
- Policies
- Modifying the VM Provision Workflow
- Service Dialog
- Elements
- Instances and Methods
- Dynamic Dialogs
- Common functionality
- ListHostGroups
- ListActivationKeys
- ListPuppetClasses
- ListSmartClassParameters
- Configuration-Related Methods
- RegisterSatellite
- ActivateSatellite
- SetConfiguration
- Dynamic Dialogs
- Testing
- Summary
- 39. Service Tips and Tricks
- Test Virtual Machine Provisioning First
- Re-create the Service Item if the Template Changes
- Custom State Machines
- Summary
- IV. Retirement
- 40. Virtual Machine and Instance Retirement
- Initiating Retirement
- Retirement-Related Attributes and Methods
- VM Retirement State Machine
- StartRetirement
- PreRetirement/CheckPreRetirement
- RemoveFromProvider/CheckRemovedFromProvider
- Default
- Unregister
- FinishRetirement
- DeleteFromVMDB
- Summary
- Further Reading
- 41. Service Retirement
- Defining a Service Retirement Entry Point
- Initiating Retirement
- Retirement-Related Attributes and Methods
- Service Retirement State Machine
- StartRetirement
- RetireService/CheckServiceRetired
- FinishRetirement
- DeleteServiceFromVMDB
- Summary
- V. Integration
- 42. Calling Automation Using the RESTful API
- API Entry Point
- Returning Results to the Caller
- Authentication and auto_approve
- Zone Implications
- run_via_api
- Summary
- Further Reading
- 43. Automation Request Approval
- Implementing a Custom Approval Workflow
- Namespace
- Group Profile
- State Machine
- Instances
- Methods
- Email Classes
- Policies
- AutomationRequest_created
- AutomationRequest_pending
- Testing
- Summary
- Implementing a Custom Approval Workflow
- 44. Calling External Services
- Calling a SOAP API Using the Savon Gem
- Calling an OpenStack API Using the fog Gem
- Reading from a MySQL Database Using the MySQL Gem
- Summary
- Further Reading
- VI. Miscellaneous
- 45. Distributed Automation Processing
- Nondistributed Automation Operations
- Distributed Automation Operations
- Tracing Queueing/Dequeueing Operations
- Detailed Queue Analysis
- Monitoring the Queue During an Automation Operation
- Troubleshooting
- Summary
- 46. Argument Passing and Handling
- Case 1: Calling from a Button
- Case 2: Calling from the RESTful API
- Case 3: Calling from a Relationship or Automate Datastore URI
- Case 4: Passing Arguments via the ws_values Hash During a VM Provision
- Passing Arguments When Calling a Method in the Same Class
- Summary
- 47. Miscellaneous Tips
- Updating the Appliance
- The ManageIQ Coding Style and Standards Guide
- Defensive Programming
- Catch Exceptions
- Use an External IDE
- Version Control
- Use Configuration Domains
- Summary
- Index