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Course Outline
1. Introduction to OpenStack
- Evolution of cloud computing and the OpenStack history
- Key features of cloud infrastructure
- Cloud deployment models
- Private, public, and hybrid clouds
- On-premise environments and service models (IaaS, PaaS, SaaS)
- Implementing public and private clouds using OpenStack
- Comparison of open-source versus commercial OpenStack distributions
- Different approaches to OpenStack deployment
- The broader OpenStack ecosystem
- Core modules
- Supporting infrastructure tools
- Third-party integrations
- Understanding the OpenStack lifecycle
- Overview of OpenStack certification paths
- Setup of the dedicated OpenStack lab (VM) for this course
2. Practical Management of an OpenStack Cloud
- Overview of the OpenStack landscape
- Key components (Keystone, Glance, Nova, Neutron, Cinder, Heat)
- Methods for interacting with the cloud platform
- Communication flows between daemons and APIs
- Keystone: Identity Management Service
- Managing domains, projects, users, and roles
- Service catalog and endpoint configuration
- Configuring CLI clients via openrc and clouds.yaml
- Provisioning new users and projects
- Glance: Image Service
- Preparing images for cloud environments
- Understanding image attributes (properties, metadata, formats, containers)
- Procedures for uploading and retrieving images
- Neutron: Networking
- Architectural overview of Neutron
- Integration of ML2 plugins
- Standard Neutron network resource types
- Network operations at the Compute Node
- Management of tenant networks and subnets
- Configuring East-West traffic routing
- Handling external and provider networks
- Configuring North-South traffic routing
- Management of Floating IPs
- Configuration of security groups and rules
- Implementing anti-spoofing via port security
- Review of networking quotas
- Methods for verifying Neutron service health
- Nova: Compute Service
- Nova architecture breakdown
- Hypervisor interface management
- SSH keypair administration
- Instance flavor management
- Configuration of instance parameters
- Instance provisioning
- Ongoing instance management tasks
- Allocation of Floating IPs
- Accessing interactive consoles and viewing logs
- Applying security groups to instances
- Retrieving data via the metadata namespace
- Capturing interface traffic using tcpdump
- Executing live VM migrations
- Cinder: Block Storage
- Defining volume parameters
- Volume creation procedures
- General volume management
- Attaching volumes to Nova instances
3. Advanced Analysis of Neutron and its OVN Backend
- OVN architectural framework
- Identification of OVN core components
- Comparing ML2 drivers: OVN versus native OvS
- Top-down approach to OVN networking
- OpenStack logic layer (Neutron database)
- Northbound database structure
- Southbound database structure
- Logical datapath pipelines
- Definition of logical flows
- Translation to OpenFlow flows
- Mapping Neutron networks to OVN logical switches
- Logical port types and classifications
- Switching flow mechanics
- Mapping Neutron routers to OVN logical routers
- Types of NAT configurations
- Routing flow mechanics
- Neutron subnets and native DHCP integration
- DHCP flow mechanics
- Implementing security groups within OVN
- Use of ACLs and Port Groups
- Security group flow logic
- Port security implementation in OVN
- Overview of OVN Northbound tables
- Data flow within the OVN stack
- Interaction between Neutron DB, OVN NB/SB DBs, and OpenFlow in OvS
- Techniques for logical flow tracing
- Defining and analyzing microflows
- Layer 2 (L2) tracing
- Layer 3 (L3) tracing
- DHCP packet tracing
- Physical flow analysis via OpenFlow
- Tracing the full lifecycle of a packet originating from a VM
- Physical layer tracing strategies
- Simulating trace paths for hypothetical packets
- Tracing actual live packets
- Inspecting the Open vSwitch database and resource allocation
Requirements
- Strong foundational knowledge of networking
- Familiarity with cloud computing concepts
- Hands-on experience managing Linux operating systems
21 Hours
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