{"id":196,"date":"2026-01-18T22:05:23","date_gmt":"2026-01-18T21:05:23","guid":{"rendered":"https:\/\/adler-tech.com\/?page_id=196"},"modified":"2026-01-20T11:48:53","modified_gmt":"2026-01-20T10:48:53","slug":"advanced-application-development-on-openshift-4","status":"publish","type":"page","link":"https:\/\/adler-tech.com\/?page_id=196","title":{"rendered":"Advanced Application Development on OpenShift 4"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>5 days<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Day 1: Foundational Architecture and Environment Setup<\/h3>\n\n\n\n<p><strong>Chapter 1: The Modern Container Landscape<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Core Container Concepts<\/strong> (Understanding Linux namespaces, control groups, and the OCI standard)<\/li>\n\n\n\n<li><strong>The Kubernetes &amp; OpenShift Hierarchy<\/strong> (Analyzing the relationship between the K8s control plane and OpenShift&#8217;s enterprise enhancements)<\/li>\n\n\n\n<li><strong>Platform Ecosystem Overview<\/strong> (Comparing Self-managed vs. Managed editions like ROSA and ARO, and detailing core cluster components)<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 2: Interacting with the Cluster<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Omnichannel Management<\/strong> (Navigating the Developer Perspective in the Web Console vs. advanced <code>oc<\/code> CLI techniques)<\/li>\n\n\n\n<li><strong>Workload Basics<\/strong> (Defining Pod specs, container lifecycles, and the &#8220;Sidecar&#8221; pattern)<\/li>\n\n\n\n<li><strong>Access Control Fundamentals<\/strong> (Implementing RBAC: Roles, RoleBindings, and managing User permissions)<\/li>\n\n\n\n<li><strong>Storage Orchestration<\/strong> (Mapping PersistentVolumeClaims to appropriate StorageClasses for dynamic provisioning<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 3: Initial Deployment and Resource Governance<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rapid Application Prototyping<\/strong> (Utilizing Source-to-Image (S2I) to automate container builds directly from Git)<\/li>\n\n\n\n<li><strong>Stability via Resource Scoping<\/strong> (Defining <code>LimitRanges<\/code> for default\/max CPU and Memory consumption at the project level)<\/li>\n\n\n\n<li><strong>Quota Management<\/strong> (Enforcing <code>ResourceQuotas<\/code> to prevent cluster-wide resource exhaustion)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Day 2: Security, Scalability, and Persistence<\/h3>\n\n\n\n<p><strong>Chapter 4: Hardening and Network Isolation<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Workload Security Guardrails<\/strong> (Applying Security Context Constraints (SCC) to restrict root access and host-level privileges)<\/li>\n\n\n\n<li><strong>Software-Defined Networking (SDN)<\/strong> (Configuring NetworkPolicies to control Egress\/Ingress traffic and troubleshooting connectivity)<\/li>\n\n\n\n<li><strong>Cryptographic Security<\/strong> (Implementing TLS termination, certificate management, and securing the data-in-transit path)<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 5: Multi-Tier Application Deployment<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Application Packaging Tools<\/strong> (Building reusable logic with OpenShift Templates and managing complex releases with Helm Charts)<\/li>\n\n\n\n<li><strong>Advanced Scheduling<\/strong> (Influencing Pod placement using Node Selectors, Affinities, and Taints\/Tolerations)<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 6: Data and Reliability<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High Availability (HA) Frameworks<\/strong> (Configuring Liveness, Readiness, and Startup probes to automate self-healing)<\/li>\n\n\n\n<li><strong>Elasticity<\/strong> (Implementing Horizontal Pod Autoscalers (HPA) to handle fluctuating application traffic)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Day 3: Service Mesh and Observability<\/h3>\n\n\n\n<p><strong>Chapter 7: Microservices Management with Istio<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Service Mesh Foundations<\/strong> (Architecture of the Data Plane vs. Control Plane and the Envoy sidecar proxy)<\/li>\n\n\n\n<li><strong>Installation &amp; Deployment<\/strong> (Deploying the OpenShift Service Mesh Operator and integrating apps into the Mesh)<\/li>\n\n\n\n<li><strong>Traffic Engineering<\/strong> (Managing A\/B testing, Canary rollouts, and VirtualServices)<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 8: Mesh Resilience and Insights<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zero-Trust Security<\/strong> (Enabling Mutual TLS (mTLS) and fine-grained authorization within the mesh)<\/li>\n\n\n\n<li><strong>Fault Tolerance<\/strong> (Implementing circuit breakers, retries, and timeout policies)<\/li>\n\n\n\n<li><strong>The Observability Stack<\/strong> (Visualizing telemetry with Kiali, and deep-dive monitoring via Prometheus and Grafana)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Day 4: Cloud-Native Continuous Integration (Tekton)<\/h3>\n\n\n\n<p><strong>Chapter 9: Modernizing the CI\/CD Pipeline<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Introduction to Tekton Architecture<\/strong> (Understanding the Kubernetes-native approach to CI vs. traditional Jenkins)<\/li>\n\n\n\n<li><strong>The Tekton Toolbelt<\/strong> (Leveraging the <code>tkn<\/code> CLI, Triggers, the community Catalog, and the Dashboard interface)<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 10: Building Automated Pipelines<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pipeline Component Design<\/strong> (Developing reusable Tasks\/TaskRuns and orchestrating them into complex Pipelines)<\/li>\n\n\n\n<li><strong>Event-Driven Automation<\/strong> (Configuring Triggers and Interceptors to respond to Git Webhooks)<\/li>\n\n\n\n<li><strong>End-to-End Delivery<\/strong> (Automating the flow from source code commit to a running OpenShift deployment)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Day 5: Extensibility and Custom Automation<\/h3>\n\n\n\n<p><strong>Chapter 11: The Operator Framework<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The Operator Pattern<\/strong> (Understanding the &#8220;Controller&#8221; loop and how to extend the Kubernetes API with Custom Resource Definitions &#8211; CRDs)<\/li>\n\n\n\n<li><strong>Ecosystem Utilization<\/strong> (Navigating the OperatorHub to deploy certified services like databases and middleware)<\/li>\n<\/ul>\n\n\n\n<p><strong>Chapter 12: Custom Operator Development<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Automation at Scale<\/strong> (Introduction to the Operator SDK and building custom controllers to automate operational tasks)<\/li>\n\n\n\n<li><strong>Advanced Lifecycle Management<\/strong> (Implementing &#8220;Day 2&#8221; automation for backups, updates, and application tuning)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>5 days Day 1: Foundational Architecture and Environment Setup Chapter 1: The Modern Container Landscape Chapter 2: Interacting with the Cluster Chapter 3: Initial Deployment and Resource Governance Day 2: Security, Scalability, and Persistence Chapter 4: Hardening and Network Isolation Chapter 5: Multi-Tier Application Deployment Chapter 6: Data and Reliability Day 3: Service Mesh and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":185,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-196","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/adler-tech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=196"}],"version-history":[{"count":2,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/196\/revisions"}],"predecessor-version":[{"id":219,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/196\/revisions\/219"}],"up":[{"embeddable":true,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/185"}],"wp:attachment":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}