Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
Arcitura YouTube Channel
- Overview
- Mechanisms
- Overview
- Audit Monitor
- Automated Scaling Listener
- Billing Management System
- Cloud Storage Device
- Cloud Usage Monitor
- Failover System
- Hypervisor
- Load Balancer
- Logical Network Perimeter
- Multi-Device Broker
- Pay-Per-Use Monitor
- Ready-Made Environment
- Remote Administration System
- Resource Cluster
- Resource Management System
- Resource Replication
- SLA Management System
- SLA Monitor
- State Management Database
- Virtual Server
- Compound Patterns
- Design Patterns
- Overview
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Automated Administration
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Bare-Metal Provisioning
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Broad Access
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Centralized Remote Administration
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Cross-Storage Device Vertical Tiering
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Direct I/O Access
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Direct LUN Access
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Dynamic Data Normalization
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Dynamic Failure Detection and Recovery
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Dynamic Scalability
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Elastic Disk Provisioning
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Elastic Network Capacity
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Elastic Resource Capacity
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Hypervisor Clustering
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Intra-Storage Device Vertical Data Tiering
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Load Balanced Virtual Server Instances
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Load Balanced Virtual Switches
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Multipath Resource Access
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Non-Disruptive Service Relocation
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Pay-as-You-Go
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Persistent Virtual Network Configuration
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Platform Provisioning
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Rapid Provisioning
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Realtime Resource Availability
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Redundant Physical Connection for Virtual Servers
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Redundant Storage
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Resource Management
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Resource Pooling
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Resource Reservation
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Self-Provisioning
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Service Load Balancing
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Service State Management
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Shared Resources
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Storage Maintenance Window
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Storage Workload Management
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Synchronized Operating State
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Usage Monitoring
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Workload Distribution
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Zero Downtime
- Service Technology Specs
- Cloud School
Realtime Resource Availability (Erl, Naserpour)
How can cloud consumers access current availability status information for IT resources?
Problem
Conventional IT resource usage and status reporting occurs at some point subsequent to the corresponding collection of usage and status data. This delay makes it impossible for cloud consumers to determine the current availability and status of a given IT resource.Solution
A monitoring and reporting system is established to provide realtime (or near realtime) reporting of IT resource availability and status information.Application
The status of an IT resource is constantly monitored and transmitted to a monitoring station from which an availability reporter extracts and streams the usage data to a portal where it can be viewed and monitored by the cloud consumer.Compound Patterns
Burst In, Burst Out to Private Cloud, Burst Out to Public Cloud, Elastic Environment, Infrastructure-as-a-Service (IaaS), Multitenant Environment, Platform-as-a-Service (PaaS), Private Cloud, Public Cloud, Resilient Environment, Software-as-a-Service (SaaS)Problem
An SLA includes various metrics to define service quality guarantees, a primary one of which is service availability. For a cloud consumer to be able to check on and assess the availability of a cloud service or IT resource, it needs to be able to receive up-to-date availability information, on-demand. Most management systems used in clouds provide tools for generating usage and status reports after data is collected and stored and then subsequently requested by cloud consumers or cloud providers. The final step is for the data to be presented and rendered in a report. Because of the time it takes to complete these steps, the cloud consumer is given only historical availability data.
Solution
The system established by this pattern is similar to conventional usage data collecting and reporting architectures in that it consists of a usage monitor that collects the availability data and sends it to a monitoring station for storage. What distinguishes this system is the use of an availability reporter component that is capable of instantly retrieving and streaming the availability data so that it can be sent, on an on-going basis, to a front-end for viewing.
Application
This pattern is commonly applied together with the Centralized Remote Administration pattern, as the usage and administration portal is generally the most convenient location for the streamed availability data to be displayed.
Figure 1 - A cloud architecture resulting from the application of the Realtime Resource Availability pattern.
- A specialized monitor (not shown) collects and stores availability data in a dedicated database as part of a monitoring station.
- The availability reporter instantly extrapolated the availability data from the monitoring station and published streams it to the usage and administration portal.
- The cloud consumer can view the realtime stream of availability report data via the usage and administration portal.
In the absence of a usage and administration portal, a separate service availability portal can be created, dedicated to the display of IT resource availability and status data. This type of system can also involve the use of a report access manager to manage the list of authorized IT resources for which a given cloud consumer can view availability and status data.
NIST Reference Architecture Mapping
This pattern relates to the highlighted parts of the NIST reference architecture, as follows:
This pattern is covered in CCP Module 4: Fundamental Cloud Architecture.
For more information regarding the Cloud Certified Professional (CCP) curriculum, visit www.cloudschool.com.