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Course Outline
Virtualization Fundamentals
- Overview of Operating System Concepts: CPU, Memory, Network, Storage
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Hypervisors
- Management of virtualization hosts
- "Host" machine and "guest" operating systems
- Type-1 and Type-2 Hypervisors
- Examples: Citrix XEN, VMware ESX/ESXi, MS Hyper-V, IBM LPAR
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Network Virtualization
- Introduction to the 7-Layer OSI Model
- Focus on the Network Layer
- TCP/IP Model or Internet Protocol
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Deep Dive into Specific Layers
- Application Layer: SSL
- Transport Layer: TCP
- Internet Layer: IPv4/IPv6
- Link Layer: Ethernet
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Packet Structure
- Addressing: IP Addresses and Domain Names
- Firewall, Load Balancer, Router, Adapter
- Virtualized Networks
- Higher-level abstractions: Subnets, Zones
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Hands-on Exercise:
- Familiarization with the ESXi cluster and vSphere client.
- Create/update networks within the ESXi Cluster, deploy guests from VMDK packages, and enable inter-connectivity between guests in an ESXi cluster.
- Modify a running VM instance and capture a snapshot.
- Update firewall rules in ESXi using the vSphere client.
2. Cloud Computing: A Paradigm Shift
- A rapid, cost-effective path to make products/solutions available to the world
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Resource Sharing
- Virtualization of virtualized environments
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Key Benefits:
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On-demand resource elasticity
- Ideate - Code - Deploy without needing dedicated infrastructure
- Rapid CI/CD pipelines
- Environment isolation and vertical autonomy
- Security through layered architecture
- Cost optimization
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On-demand resource elasticity
- On-premise Cloud and Cloud Providers
- Cloud as an effective conceptual abstraction for distributed computing
3. Introduction to Cloud Solution Layers:
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IaaS (Infrastructure as a Service)
- AWS, Azure, Google Cloud
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Select one Provider to continue with later. AWS is recommended.
- Introduction to AWS VPC, AWS EC2, etc.
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PaaS (Platform as a Service)
- AWS, Azure, Google Cloud, CloudFoundry, Heroku
- Introduction to AWS DynamoDB, AWS Kinesis, etc.
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SaaS (Software as a Service)
- Brief overview
- Microsoft Office, Confluence, SalesForce, Slack
- SaaS builds on PaaS, which builds on IaaS, which builds on Virtualization
4. IaaS Cloud Hands-on Project
- This project utilizes AWS as the IaaS Cloud Provider
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Use CentOS/RHEL as the operating system for the remainder of the exercise
- Alternatively, Ubuntu can be used, but RHEL/CentOS are preferred
- Obtain individual AWS IAM accounts from your cloud administrator
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Each student must complete these steps independently
- The ability to carve out your own infrastructure on-demand best demonstrates the power of cloud computing
- Use AWS Wizards -- AWS online consoles -- to accomplish these tasks unless specified otherwise
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Create a public VPC in the us-east-1 Region
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Create two Subnets (Subnet-1 and Subnet-2) in two different Availability Zones
- Refer to https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenarios.html for guidance.
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Create three separate Security Groups
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SG-Internet
- Allows incoming traffic from the Internet on https (port 443) and http (port 80)
- No other incoming connections allowed
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SG-Service
- Allows incoming traffic only from security group SG-Internet on https (port 443) and http (port 80)
- Allows ICMP only from SG-Internet
- No other incoming connections allowed
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SG-SSH:
- Allows SSH (port 22) incoming connections only from a single IP address matching the public IP of the student’s lab machine. If the lab machine is behind a proxy, use the public IP of the proxy.
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SG-Internet
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Create two Subnets (Subnet-1 and Subnet-2) in two different Availability Zones
- Deploy an instance using an AMI corresponding to your chosen OS -- preferably the latest RHEL/CentOS versions available in AMIs -- and host the instance on Subnet-1. Attach the instance to the SG-Service and SG-SSH security groups.
- Access the instance via SSH from your lab machine.
- Install the NGINX server on this instance.
- Place static content of your choice -- HTML pages, images -- to be served by NGINX (on port 80 via HTTP) and define URLs for them.
- Test the URL from within that machine.
- Create an AMI image from this running instance.
- Deploy that new AMI and host the instance on Subnet-2. Attach the instance to the SG-Service and SG-SSH security groups.
- Run the NGINX server and validate that the access URL for the static content created in step (i) works correctly.
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Create a new "classic" Elastic Load Balancer and attach it to SG-Internet.
- Note the differences between Classic Load Balancer, Application Load Balancer, and Network Load Balancer.
- Create a routing rule to forward all http (port 80) and https (port 443) traffic to an instance group comprising the two instances created above.
- Using any certificate management tool (e.g., Java Keytool), create a key-pair and a self-signed certificate, then import the certificate to AWS Certificate Manager (ACM).
5. Cloud Monitoring: Introduction and Hands-on Project
- AWS CloudWatch metrics
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Navigate to the AWS CloudWatch dashboard for the instances
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Retrieve the relevant metrics and explain their variability over time
- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/viewing_metrics_with_cloudwatch.html
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Retrieve the relevant metrics and explain their variability over time
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Navigate to the AWS CloudWatch dashboard for the ELB
- Observe the ELB metrics and explain their variability over time
- https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-cloudwatch-metrics.html
6. Advanced Concepts for Further Learning
- Hybrid Cloud -- on-premise and public cloud
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Migration: On-premise to public cloud
- Application code migration
- Database migration
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DevOps
- Infrastructure as Code
- AWS CloudFormation Template
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Auto-scaling
- Using AWS CloudWatch metrics to determine health
Requirements
No specific prerequisites are required to participate in this course.
21 Hours
Custom Corporate Training
Training solutions designed exclusively for businesses.
- Customized Content: We adapt the syllabus and practical exercises to the real goals and needs of your project.
- Flexible Schedule: Dates and times adapted to your team's agenda.
- Format: Online (live), In-company (at your offices), or Hybrid.
Price per private group, online live training, starting from 3900 € + VAT*
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