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bongoDev | ConfigMaps & Secrets: Environment and Volume Injection - CKA Exam Preparation Pro

TopicCKA Exam Preparation Pro

01CKA Exam Orientation: v1.35, Format, Scoring & BlueprintPreview
02Exam Environment, Allowed Documentation & Terminal Rules
03Build a CKA Practice Lab: kind for Fast Drills, kubeadm for Admin Tasks
04kubectl Speed: Imperative Commands, Dry Runs & Fast YAML
05YAML Editing, kubectl explain, Patching & Output Formats
06Documentation Navigation Drills: Find the Right Example Fast
07Diagnostic Lab & 30-Day CKA Preparation Plan
08Kubernetes Architecture: API Server, etcd, Scheduler, Controllers & kubelet
09RBAC I: Roles, ClusterRoles, RoleBindings & ClusterRoleBindings
10RBAC II: ServiceAccounts, Impersonation & Forbidden Errors
11Prepare Nodes for kubeadm: Runtime, Networking & Preflight
12kubeadm Init, Join, Reset & Token Management
13Kubeconfig, Contexts, Certificates & Cluster Access
14Cluster Lifecycle: kubeadm Upgrade Planning & Node Sequence
15Highly Available Control Plane: Endpoints, etcd & Failure Domains
16etcd Operational Safety: Snapshot, Restore & Membership Evidence
17Helm for CKA: Install, Upgrade, Values, Rollback & Uninstall
18Kustomize for CKA: Bases, Overlays, Images & Patches
19Extension Interfaces: CNI, CSI & CRI
20CRDs & Custom Resources
21Operators: Install, Configure & Troubleshoot
22Deployments & ReplicaSets: Desired State Under Time Pressure
23Rolling Updates, Rollout Status, History & Rollback
24ConfigMaps & Secrets: Environment and Volume Injection
25Requests, Limits, QoS & Resource-Safe Scheduling
26Probes & Self-Healing: startup, readiness and liveness
27Node Selection: nodeSelector & Node Affinity
28Taints & Tolerations
29Horizontal & Vertical Pod Autoscaling
30DaemonSets, Jobs & CronJobs
31Pod Admission, Scheduling Constraints & Why Pods Stay Pending
32Kubernetes Network Model & Pod-to-Pod Connectivity
33Services: ClusterIP, NodePort, LoadBalancer & Headless
34EndpointSlices & Selector Troubleshooting
35NetworkPolicy I: Default Deny & Explicit Allow
36NetworkPolicy II: Egress, DNS & Combined Selectors
37CoreDNS: Service Discovery & Troubleshooting
38Ingress Controllers & Ingress Resources
39Gateway API: GatewayClass, Gateway & HTTPRoute
40Service & Network Troubleshooting Playbook
41Persistent Storage Mental Model: PV, PVC, StorageClass & CSI
42StorageClass & Dynamic Provisioning
43PV/PVC: Capacity, Access Modes & Binding
44Reclaim Policies, Expansion & Data-Safe Changes
45PVC Mount & Storage Troubleshooting
46CKA Troubleshooting Method: Scope → Evidence → Fix → Verify
47Node NotReady: kubelet, Runtime, Pressure & Network Evidence
48Static Pod & Control-Plane Component Troubleshooting
49Pending Pods: Scheduler Events, Resources, Affinity, Taints & PVCs
50CrashLoopBackOff, Commands, Exit Codes & Previous Logs
51ImagePullBackOff & Registry Evidence
52OOMKilled, CPU/Memory Pressure & Resource Usage
53Container Logs, Output Streams & Multi-Container Pods
54Monitor Cluster & Application Resource Usage
55Service, DNS & Network Troubleshooting Under Exam Pressure
56Authentication, RBAC & Kubeconfig Failure Troubleshooting
57Events as a First-Class Troubleshooting Signal
58CKA Timed Task Strategy: Weight, Triage, Skip & Return
59Mock Exam Debrief: Turn Failures into Repeatable Drills
60CKA Final Readiness, Command Playbook & Exam-Day Checklist

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Knowledge Hub/CKA Exam Preparation Pro/ConfigMaps & Secrets: Environment and Volume Injection

CKA Exam Preparation Pro

Paid lesson · Intermediate · 19 min read

ConfigMaps & Secrets: Environment and Volume Injection

Configure applications without rebuilding images. Exam focus: Workloads & Scheduling.

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