Podcast
Questions and Answers
What type of image is specifically provided by service providers for quick deployment of cloud servers?
What type of image is specifically provided by service providers for quick deployment of cloud servers?
- Private image
- Full-ECS image
- Shared image
- Marketplace image (correct)
Which of the following is NOT a format that can be imported to create cloud servers?
Which of the following is NOT a format that can be imported to create cloud servers?
- ISO (correct)
- VMDK
- QCOW2
- VHD
What must be done to image files in formats not supported for import?
What must be done to image files in formats not supported for import?
- They are archived for future use.
- They must be converted to a supported format. (correct)
- They are automatically accepted.
- They need to be shared before import.
Which type of image allows multiple users to access a private image for use?
Which type of image allows multiple users to access a private image for use?
What can be said about the custom software environments built using shared or Marketplace images?
What can be said about the custom software environments built using shared or Marketplace images?
What does the deployment quality of traditional services heavily depend on?
What does the deployment quality of traditional services heavily depend on?
Which tool can be used to convert image formats for import into the cloud platform?
Which tool can be used to convert image formats for import into the cloud platform?
Which of the following statements about the testing of Marketplace images is true?
Which of the following statements about the testing of Marketplace images is true?
What is a key feature of the Image Management Service (IMS)?
What is a key feature of the Image Management Service (IMS)?
Which types of images can be created using Image Management Service?
Which types of images can be created using Image Management Service?
What does a private image contain?
What does a private image contain?
Which statement about public images is true?
Which statement about public images is true?
What is the purpose of the Host Security Service (HSS) in relation to public images?
What is the purpose of the Host Security Service (HSS) in relation to public images?
What does a data disk image contain?
What does a data disk image contain?
What allows users to manage images in a flexible manner in IMS?
What allows users to manage images in a flexible manner in IMS?
Which operating systems are part of the public images provided by the IMS?
Which operating systems are part of the public images provided by the IMS?
What is the primary purpose of an AS policy in managing an AS group?
What is the primary purpose of an AS policy in managing an AS group?
What is a scaling action intended to achieve within an AS group?
What is a scaling action intended to achieve within an AS group?
What is the role of the cooldown period in scaling actions?
What is the role of the cooldown period in scaling actions?
Which bandwidth types can AS adjust under the bandwidth scaling policy?
Which bandwidth types can AS adjust under the bandwidth scaling policy?
What does Cloud Container Engine (CCE) primarily provide for users?
What does Cloud Container Engine (CCE) primarily provide for users?
What advantage does a Dedicated Host (DeH) provide for users?
What advantage does a Dedicated Host (DeH) provide for users?
What is the primary benefit of using FunctionGraph?
What is the primary benefit of using FunctionGraph?
Which service allows users to run containerized applications at scale?
Which service allows users to run containerized applications at scale?
What is a primary benefit of creating an image from an ECS?
What is a primary benefit of creating an image from an ECS?
Which cloud service is recommended for periodic backups?
Which cloud service is recommended for periodic backups?
How does Auto Scaling (AS) contribute to cost management?
How does Auto Scaling (AS) contribute to cost management?
What happens to unneeded resources during a drop in access volume with Auto Scaling?
What happens to unneeded resources during a drop in access volume with Auto Scaling?
Which of the following best describes how Auto Scaling (AS) enhances system availability?
Which of the following best describes how Auto Scaling (AS) enhances system availability?
What is the role of Elastic Load Balancer (ELB) when used with Auto Scaling?
What is the role of Elastic Load Balancer (ELB) when used with Auto Scaling?
What function does Auto Scaling (AS) serve in relation to unhealthy instances?
What function does Auto Scaling (AS) serve in relation to unhealthy instances?
When configuring Auto Scaling (AS) policies, what happens during a sudden traffic spike?
When configuring Auto Scaling (AS) policies, what happens during a sudden traffic spike?
What is the primary purpose of an Auto Scaling (AS) group?
What is the primary purpose of an Auto Scaling (AS) group?
Which policy type allows for scaling actions based on defined alarm metrics like CPU usage?
Which policy type allows for scaling actions based on defined alarm metrics like CPU usage?
How does the AS system respond during high-demand events like e-commerce promotions?
How does the AS system respond during high-demand events like e-commerce promotions?
What does an AS configuration template specify?
What does an AS configuration template specify?
Which of the following metrics is NOT typically monitored to trigger Auto Scaling actions?
Which of the following metrics is NOT typically monitored to trigger Auto Scaling actions?
What happens when the configured triggering time for a scaling action arrives?
What happens when the configured triggering time for a scaling action arrives?
In which scenario is Auto Scaling particularly beneficial due to unpredictable service load?
In which scenario is Auto Scaling particularly beneficial due to unpredictable service load?
Which component of Auto Scaling groups is necessary for enabling and disabling scaling policies?
Which component of Auto Scaling groups is necessary for enabling and disabling scaling policies?
Study Notes
Image Management Service (IMS)
- Image Lifecycle Management: IMS enables users to manage the complete lifecycle of images, from creation to deletion.
- Image Types:
- Public Images: Standard images provided by the cloud platform, available to all users, and contain an OS and pre-installed public applications.
- Private Images: Available only to the creator and contain an OS, service data, pre-installed public applications, and custom applications added by the creator. These can be system disk, data disk, or full-ECS images.
- Shared Images: Private images that other users have shared.
- Marketplace Images: Third-party images published in the Marketplace, containing an OS, application environment, and pre-installed software.
Scenarios
- Migrating Servers to the Cloud: Import local images to the cloud platform to quickly create cloud servers.
- Deploying a Specific Software Environment: Utilize shared or Marketplace images to effortlessly build custom software environments.
- Backing Up Server Environments: Create an image from an ECS to safeguard the server data.
Auto Scaling (AS)
- Automatic Resource Adjustment: AS dynamically scales resources based on pre-configured policies, ensuring system stability by responding to changes in demand.
- Enhanced Cost Management: AS reduces costs by automatically adjusting resources, optimizing utilization.
- Improved Availability: AS ensures sufficient resources are always available for applications.
- High Fault Tolerance: AS monitors instances and replaces unhealthy ones, enhancing reliability.
AS Architecture
- Scaling Control: Configure thresholds and schedules to trigger scaling actions based on specific needs.
- Policy Configuration:
- Alarm-Based: Triggered when monitored metrics (e.g., CPU usage) exceed predefined thresholds.
- Scheduled: Scheduled to execute at specific times.
- Periodic: Triggered at regular intervals or within specified time ranges.
Scenarios
-
Web Applications:
E-Commerce: AS scales resources during promotions to ensure smooth operation.
-
Heavy-Traffic Portals: AS dynamically adjusts resources based on monitored ECS metrics.
AS Basic Concepts
- AS Group: A collection of instances with similar attributes that share the same AS policies.
- AS Configuration: Specifies the specifications for instances added to an AS group (e.g., ECS type, vCPUs, memory)
- AS Policy: Defines the trigger condition for a scaling action and the corresponding operations to be performed.
- Scaling Action: Adds or removes instances from an AS group to maintain the desired number of instances.
- Cooldown Period: Prevents repeated scaling actions for the same event.
- Bandwidth Scaling: AS automatically adjusts bandwidth based on the configured policy.
Other Compute Services
- Cloud Container Engine (CCE): A high-performance, scalable Kubernetes service for managing containers and applications on HUAWEI CLOUD.
- Dedicated Host (DeH): A physical server dedicated to a user's services, providing isolated resources and compatibility with existing software licenses.
- FunctionGraph: A serverless computing service allowing users to run code without managing servers. FunctionGraph handles server maintenance and scaling, and charges only for execution time.
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Description
This quiz explores the Image Management Service (IMS), focusing on its image lifecycle management and different types of images available. Users will learn about public, private, shared, and marketplace images, as well as practical scenarios involving cloud server migration and software environment deployment.
