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Course Outline
Day 1 – Containers and Image Management
Introduction to Container Platforms
- Comparison of traditional application deployment with container-based deployment
- Difference between containers and virtual machines
- Container runtimes and engines
- The role of Docker, Kubernetes, and OpenShift
- Common architectures for container platforms
- Workflows for development, testing, and production
Working with Containers
- Running and managing containers
- The container lifecycle
- Starting, stopping, and removing containers
- Executing commands inside containers
- Utilizing environment variables
- Port mapping techniques
- Accessing container logs
- Inspecting resource usage and processes
Building Container Images
- Understanding image structure and layers
- Creating Dockerfiles and Containerfiles
- Selecting appropriate base images
- Incorporating application dependencies
- Configuring entry points and commands
- Leveraging image caching
- Strategies for reducing image size
- Building reproducible images
Container Registries
- Distinguishing between public and private registries
- Tagging and versioning images
- Pushing and pulling images
- Image authentication methods
- Image retention policies and cleanup
- Basic security considerations for images
Container Networking and Storage
- Core concepts of container networking
- Bridge networking implementation
- Port exposure strategies
- Facilitating container-to-container communication
- Using bind mounts and volumes
- Maintaining persistent container data
- Backup considerations for storage
Hands-on Exercises
- Running and inspecting containers
- Building an application image
- Configuring ports and environment variables
- Publishing an image to a registry
- Storing persistent data external to the container
Day 2 – Kubernetes Architecture and Workloads
Kubernetes Fundamentals
- The purpose of container orchestration
- Overview of Kubernetes architecture
- Components of the control plane
- Understanding worker nodes
- Functionality of the API server
- The role of the scheduler
- Controller operations
- Differentiating cluster state from desired state
- Interacting with the cluster using kubectl
Kubernetes Resources
- Pods
- ReplicaSets
- Deployments
- Namespaces
- Labels and annotations
- Selectors
- Declarative resource definitions
- YAML manifests
Deploying Applications
- Creating and managing Deployments
- Scaling workloads up or down
- Updating container images
- Implementing rolling updates
- Executing rollbacks
- Reviewing deployment history
- Restarting workloads
- Managing application replicas
Application Configuration
- Using ConfigMaps
- Utilizing Secrets
- Setting environment variables
- Managing configuration files
- Separating application code from configuration data
- Handling environment-specific settings
Resource Management
- Defining CPU and memory requests
- Setting CPU and memory limits
- Implementing resource quotas
- Configuring limit ranges
- Understanding scheduling implications
- Diagnosing failures related to resources
Hands-on Exercises
- Deploying a containerized application
- Creating and updating Kubernetes manifests
- Scaling an application
- Performing a rolling update and rollback
- Configuring the application using ConfigMaps and Secrets
- Applying resource requests and limits
Day 3 – Kubernetes Networking, Storage, and Security
Kubernetes Networking
- The cluster networking model
- Pod-to-pod communication methods
- Service discovery mechanisms
- DNS resolution within the cluster
- ClusterIP services
- NodePort services
- LoadBalancer services
- Ingress concepts
- Patterns for application exposure
Network Policies
- Controlling traffic between workloads
- Defining ingress and egress rules
- Implementing namespace-based traffic control
- Testing network connectivity
- Troubleshooting service communication issues
Persistent Storage
- Distinguishing ephemeral from persistent storage
- Volumes overview
- PersistentVolumes
- PersistentVolumeClaims
- StorageClasses
- Dynamic provisioning techniques
- Understanding access modes
- Reclaim policies for storage
- Utilizing storage for stateful applications
Kubernetes Access Control
- Concepts of authentication and authorization
- Role-Based Access Control (RBAC)
- Roles and ClusterRoles
- RoleBindings and ClusterRoleBindings
- Service accounts
- Implementing least-privilege access
- Inspecting effective permissions
Workload Security
- Security contexts explained
- Running containers as non-root users
- Managing Linux capabilities
- Implementing read-only filesystems
- Handling secrets securely
- Verifying image provenance
- Avoiding common configuration risks
Hands-on Exercises
- Exposing an application via Kubernetes services
- Configuring ingress rules
- Restricting traffic using network policies
- Provisioning persistent storage
- Configuring RBAC permissions
- Running a workload with an appropriate security context
Day 4 – Working with OpenShift Environments
Introduction to OpenShift
- OpenShift as a Kubernetes-based application platform
- Kubernetes resources within an OpenShift environment
- Architecture of an OpenShift cluster
- Difference between projects and namespaces
- Platform users and service accounts
- Navigating the web console
- Using the OpenShift CLI
Managing Projects and Access
- Creating and managing projects
- Assigning user permissions
- Project-level roles
- Administrative access controls
- Resource quotas in projects
- Limit ranges configuration
- Service accounts management
- Reviewing project resources
Deploying Applications
- Deploying container images in OpenShift
- Creating application workloads
- Managing deployments
- Scaling applications
- Updating application versions
- Performing rollbacks
- Managing application configuration
- Working with secrets in OpenShift
Application Exposure
- Understanding Services in OpenShift
- Configuring Routes
- TLS concepts and implementation
- Internal and external application access methods
- Managing hostnames and certificates
- Diagnosing route and service issues
Storage in OpenShift
- Persistent Volume Claims (PVCs)
- StorageClasses configuration
- Attaching storage to workloads
- Managing stateful workloads
- Storage access permissions
- Troubleshooting volume mounting issues
Scheduling and Node Management
- Labels and selectors in OpenShift
- Node selectors
- Taints and tolerations
- Affinity and anti-affinity concepts
- Workload placement strategies
- Cordoning and draining nodes
- Considerations for node maintenance
Hands-on Exercises
- Accessing an OpenShift environment
- Creating and configuring a project
- Deploying and exposing an application
- Configuring user and service-account access
- Attaching persistent storage
- Scaling and updating a running workload
Day 5 – Operations, Monitoring, and Troubleshooting
Platform Monitoring
- Monitoring cluster and application health
- Analyzing resource metrics
- Assessing node health
- Evaluating workload status
- Monitoring capacity and resource utilization
- Identifying performance constraints
Logging and Events
- Accessing container logs
- Retrieving pod logs
- Viewing previous container logs
- Interpreting Kubernetes events
- Analyzing application and platform messages
- Filtering and interpreting operational data
Health Checks
- Startup probes configuration
- Readiness probes setup
- Liveness probes implementation
- Designing effective health endpoints
- Diagnosing probe failures
- Preventing unnecessary application restarts
Troubleshooting Workloads
- Resolving pending pods
- Addressing image pull failures
- Investigating crash loops
- Fixing misconfigured environment variables
- Troubleshooting failed mounts
- Dealing with insufficient resources
- Resolving permission errors
- Diagnosing service and route connectivity problems
- Addressing DNS issues
- Investigating application startup failures
Operational Security
- Reviewing permissions regularly
- Proper service account usage
- Secure handling of credentials
- Image security best practices
- Ensuring network isolation
- Auditing platform access
- Applying the principle of least privilege
Maintenance and Lifecycle Management
- Conducting routine platform checks
- Performing node maintenance
- Considerations for application backups
- Backing up configurations
- Planning updates
- Managing changes effectively
- Testing updates in safe environments
- Planning for rollbacks
- Understanding disaster recovery concepts
Final Practical Workshop
Participants complete an end-to-end operational scenario:
- Building and tagging a container image.
- Publishing the image to a registry.
- Deploying the application to Kubernetes or OpenShift.
- Configuring application settings and credentials.
- Exposing the application externally.
- Attaching persistent storage.
- Configuring access permissions.
- Adding health checks.
- Scaling and updating the application.
- Diagnosing and resolving an introduced failure.
Course Format
- Interactive lectures and technical discussions.
- Instructor-led demonstrations.
- Extensive hands-on exercises.
- Scenario-based administration and troubleshooting workshops.
- Practical work in container, Kubernetes, and OpenShift environments.
Course Customization Options
- The course can be adapted to the participant's existing infrastructure, cloud provider, and container tooling.
- The balance between Docker, Kubernetes, and OpenShift topics can be adjusted according to the team's experience.
- Practical exercises can be tailored to the organization's applications, deployment processes, and operational requirements.
Trademark Notice
OpenShift is a trademark of Red Hat, Inc. This independently developed training is not affiliated with, endorsed by, or authorized by Red Hat.
Requirements
Participants should possess:
- Experience using the Linux command line.
- Basic knowledge of system administration or DevOps principles.
- A general understanding of networking concepts.
- Familiarity with software deployment processes.
Previous experience with Docker, Kubernetes, or OpenShift is beneficial but not mandatory.
35 Hours
Testimonials (7)
Reda explanations and he simplified alot of the understanding
Eric Van Wyk
Course - Docker, Kubernetes and OpenShift 3 for Administrators
The labs were the best. Very practical and provides hands-on experience. I personally think that it is the most effective means of truly understanding the course and applying the concepts that were covered.
Hishaam Johnstone
Course - Docker, Kubernetes and OpenShift 3 for Administrators
I loved the willingness to help and explain further when uncertain
Letlotlo Miffi
Course - Docker, Kubernetes and OpenShift 3 for Administrators
Adriano studied the subject very deeply which is the style i mostly prefer ie: less about the commands more on the mechanism behind it. Discussed scenarios were well supported by the practical examples which helped a lot to understand the presented stuff.
Mariusz BANASZCZYK - Sopra Steria
Course - Docker, Kubernetes and OpenShift for Administrators
Deep knowledge of Adriano. Explanation of base concepts
Tomasz Szalankiewicz - LPP SA
Course - Docker, Kubernetes and OpenShift for Administrators
I generally liked the presenter.
Josif Kovacevic - ANZ
Course - Docker, Kubernetes and OpenShift for Administrators
Adrian clearly knows and enjoys this technology.
