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In this talk, I am going to briefly talk about "what cloud is" and highlight the various types of cloud (IaaS, PaaS, SaaS). The bulk of the talk will be about using the fog gem using IaaS. I will discuss fog concepts (collections, models, requests, services, providers) and supporting these with actual examples using fog. Help us caption & translate this video! http://amara.org/v/FG8Z/
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**Cutting Through the Fog of Cloud** In this presentation, Kyle Rames, a Developer Advocate at Rackspace, provides a comprehensive overview of cloud computing, its types, and practical implementation using the Fog gem with Ruby. The talk aims to demystify cloud concepts and offer insights into manipulating cloud resources effectively. **Key Points Discussed:** - **Cloud Computing Overview:** - Cloud computing allows the consumption of computing resources like utilities, charging users based on usage (hourly compute power and per megabyte for storage). - It is characterized by seemingly infinite resources and can be divided into three types: - **Software as a Service (SaaS):** Familiar applications like Gmail and GitHub. - **Platform as a Service (PaaS):** Provides a managed environment for deploying applications (e.g., Rails apps) but may not support certain services or libraries. - **Infrastructure as a Service (IaaS):** Offers greater flexibility, allowing users to configure resources as needed, usually seen at the bottom of the cloud service pyramid. - **Types of Clouds:** - **Public Cloud:** Offers inexpensive resources. - **Private Cloud:** Involves renting or purchasing physical machines for cloud software, usually at a higher cost. - **Hybrid Cloud:** Combines public and private cloud features for optimization in security and costs. - **Open vs. Closed Cloud:** - Open clouds (e.g., OpenStack) allow access to source code and community collaboration, while closed clouds restrict such access. - **Fog Gem Usage:** - Fog is a cloud SDK that facilitates cloud service interactions in Ruby. - It boasts extensive usage (over 2 million downloads) and active community contributions. - Rames discusses practical commands to provision servers, manage DNS services, and implement load balancers using Fog. - The core concepts include collections, service interactions, and the distinction between model and request layers within Fog. - **Creating and Managing Cloud Resources:** - Rames provides a step-by-step code example for provisioning servers, managing states, and handling attributes using Fog's methods. - Emphasizes the importance of using SSH keys for authentication instead of passwords for enhanced security. - Introduces a structured approach to creating DNS records programmatically using the request layer of Fog. **Conclusion:** Rames concludes the session by emphasizing the flexibility offered by cloud services, particularly through IaaS and the capabilities provided by the Fog gem in Ruby. He encourages the audience to explore further documentation and leverage the potential of cloud computing for their projects. Overall, the talk effectively clarifies cloud computing concepts while presenting practical coding techniques that developers can apply in real-world scenarios.
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