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<!doctype html> | ||
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"> | ||
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<title>Introduction to Cloud Computing</title> | ||
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<div class="slides"> | ||
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[comment]: # (mdslides presentation.md --include media) | ||
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[comment]: # (The list of themes is at https://revealjs.com/themes/) | ||
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[comment]: # (markdown: { smartypants: true }) | ||
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# Introduction to Cloud Computing | ||
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### Today's agenda | ||
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- On-premise vs Cloud environments | ||
- Amazon Web Services introduction | ||
- Regions and Availability zones | ||
- AWS shared responsibility model | ||
- Compliance | ||
- Different service models - IaaS, PaaS, SaaS | ||
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### About this course | ||
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- In-depth knowledge about the core services: AZs, Amazon Virtual Private Cloud (VPC), Amazon EC2 servers, ELB, AWS Auto Scaling, storage, networking, databases, AWS IAM, and security. | ||
- For the other services: what that service does, what the common use cases are for that service. | ||
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![](https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_intro_logo.png) | ||
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### The bad old days | ||
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- Purchase your own infrastructure (weeks to months to be global) | ||
- Army of IT employees | ||
- Dealing with cooling, hardware failure, disaster recovery | ||
- Dealing with physical security | ||
- Dealing with real estate | ||
- Hidden costs (how many servers should I purchase?) | ||
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![](https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_intro_server1.png) | ||
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### Overview of Cloud Computing | ||
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- [Amazon Web Services (AWS) provides a highly reliable, scalable, and low-cost infrastructure platform](https://docs.aws.amazon.com/whitepapers/latest/aws-overview/aws-overview.pdf?did=wp_card&trk=wp_card) | ||
- Pay-as-you-go pricing model | ||
- No need to make large up-front investments in hardware and spend a lot of time managing that hardware | ||
- More than 200 services | ||
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### Overview of Cloud Computing | ||
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While each organization experiences a unique journey to the cloud with numerous benefits, six advantages become apparent time and time again | ||
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![](https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_intro_cloudbenefits.png) | ||
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### Global Infrastructure | ||
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- AWS provides a highly available technology infrastructure platform with multiple locations worldwide. | ||
- These locations are composed of **Regions** and **Availability Zones**. | ||
- Each region has multiple, isolated locations known as Availability Zones. | ||
- Each AZ is also isolated, but the AZs in a region are: | ||
- Physically separated within a typical metropolitan region | ||
- Located in lower-risk flood plains | ||
- Connected through low-latency links | ||
- On-site backup generators | ||
- Fed via different grids from independent utilities (when available) | ||
- By placing resources in separate AZ, your service is protected from a disruption impacting a single location | ||
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### AWS the Shared Responsibility Model | ||
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- Cloud security at AWS is the number one priority. | ||
- Built-in security architecture for visibility, auditability, controllability, and agility. | ||
- AWS are responsible for the security **of** the cloud, while allow to secure anything you deploy **in** the cloud. This called the [Shared Responsibility Model](https://aws.amazon.com/compliance/shared-responsibility-model/). | ||
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<img src="https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_intro_shared.png" width="80%"> | ||
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### Compliance | ||
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- Organizations retain complete control and ownership over the region in which their data is physically located, allowing them to meet regional compliance and data residency requirements. | ||
- https://aws.amazon.com/compliance/programs/ | ||
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![](https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_intro_complience.png) | ||
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### Service Models | ||
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- Infrastructure as a Service (IaaS) | ||
- Platform as a Service (PaaS) | ||
- Software as a Service (SaaS) | ||
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<img src="https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_intro_service_models.png" width="80%"> | ||
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# Elastic Cloud Compute (EC2) | ||
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![](https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_ec2_logo.png) | ||
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### Elastic Cloud Compute (EC2) overview | ||
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- Reliable, secure, and almost infinite compute capability | ||
- Preconfigured templates for your instances, known as Amazon Machine Images (**AMI**s), that package the bits you need for your server (Linux and Windows) | ||
- Various configurations of CPU, memory, storage, and networking capacity for your instances, known as **instance types** | ||
- Persistent storage volumes for your data using Amazon Elastic Block Store (Amazon EBS), known as **Amazon EBS** volumes | ||
- A firewall that enables you to specify the protocols, ports, and source IP ranges that can reach your instances using **security groups** | ||
- Natively integrated with most of the AWS services | ||
- Pay-as-you-go [pricing model](https://aws.amazon.com/ec2/pricing/on-demand/) | ||
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### Amazon Machine Images (AMI) | ||
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An [Amazon Machine Image (AMI)](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html) is a supported and maintained image provided by AWS that provides the information required to launch an instance. | ||
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- Most common Linux and Windows distro images ready to use | ||
- You can launch an instance from an existing AMI, customize the instance (for example, install software on the instance), and then save this updated configuration as a custom AMI. | ||
- You can purchase AMIs from a third party, including AMIs that come with service contracts from organizations such as Red Hat. | ||
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### Instance types | ||
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When you launch an instance, the [instance type](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html) that you specify determines the hardware of the host computer used for your instance. | ||
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- Each instance type offers different compute, memory, and storage capabilities. | ||
- Instances are grouped in an instance family based on these capabilities. | ||
- Remember that your EC2 shares other resources of the host computer, with other AWS customers. If each instance on a host computer tries to use as much of one of these shared resources as possible, each receives an equal share of that resource. | ||
- If the host computer is underused, your instance can consume a **higher** share of that resource while it's available. | ||
- Amazon Web Services offers [previous generation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html#previous-gen-instances) instance types for users who have optimized their applications around them, as well as then [current generation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html#current-gen-instances) types. | ||
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### Instance types name | ||
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Instance types are named based on their family (**c**), generation (**5**), additional capabilities (**n**), and size (**xlarge**). | ||
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- Possible families are: General purpose, Compute optimized, Memory optimized, Storage optimized, Accelerated computing | ||
- The following are the additional capabilities indicated by the instance type names: | ||
- a – AMD processors | ||
- i – Intel processors | ||
- d – Instance store volumes | ||
- n – Network optimization | ||
- b – Block storage optimization | ||
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![](https://exit-zero-academy.github.io/DevOpsTheHardWayAssets/slides/media/aws_ec2_instance_name.png) | ||
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### Networking and storage features | ||
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When you select an instance type, this determines the networking and storage features that are available. | ||
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- IPv6 is supported on all current generation instance types. | ||
- To maximize the networking and bandwidth performance of your instance type, you can do the following: | ||
- Launch supported instance types into a cluster [placement group](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html). | ||
- Enable [enhanced networking](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html). | ||
- To obtain additional, dedicated capacity for Amazon EBS I/O, you can launch some instance types as [EBS–optimized instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html). | ||
- The EBS volume persists independently for the life span of the instance. Three types of volumes: | ||
- General purpose (SSD) | ||
- Provisioned IOPS (PIOPS) | ||
- Magnetic | ||
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### EC2 Security | ||
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- A [key pair](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html) is a set of security credentials that you use to prove your identity when connecting to an instance. AWS stores the public key on your instance, and you store the private key. | ||
- A [security group](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-security-groups.html) acts as a virtual firewall for your EC2 instances to control incoming and outgoing traffic. | ||
- You can specify one or more security groups. If you don't specify a security group, AWS uses the default security group. | ||
- New and modified rules are automatically applied to all instances that are associated with the security group. | ||
- A security group is **default deny** and **stateful**. | ||
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</textarea></section> | ||
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# Thanks | ||
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</textarea></section> | ||
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</textarea></section> | ||
</div> | ||
</div> | ||
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