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initial version of CKAD resource list
reviewed some urls from CKA
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| # Certified Kubernetes Application Developer (CKAD) | ||
| A curated list of resources that will help you to face your Kubernetes certification. Based in the newest policy about 'Resources Allowed', current list will give preference | ||
| to those materials coming from the allowed sources [kubernetes.io](kubernetes.io). Others like Youtube videos, blog resources could be referenced in expectional case due to I still found them useful in my k8s learning journey. | ||
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| _Before to start_ | ||
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| Ensure you have the right version of Kubernetes documentation selected (e.g. v1.9 for the current exam) especially for API objects and annotations. | ||
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| ## Exam Objectives | ||
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| These are the exam objectives you review and understand in order to pass the test. The objectives are current as of December 12, 2017. | ||
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| * [CKAD v1.0 Curriculum](https://github.com/cncf/curriculum/blob/master/certified_kubernetes_application_developer_exam_v1.0.pdf) | ||
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| ### [Core Concepts](https://kubernetes.io/docs/concepts/) 13% | ||
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| * [Understand the Kubernetes API primitives](https://v1-9.docs.kubernetes.io/docs/reference/generated/kubernetes-api/v1.9/) | ||
| * [Create and configure basic Pods](https://kubernetes.io/docs/concepts/workloads/pods/pod-overview/) | ||
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| ### [Configuration] 18% (https://v1-9.docs.kubernetes.io/docs/reference/generated/kubernetes-api/v1.9/#-strong-config-storage-strong-) | ||
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| * Understand ConfigMaps | ||
| * [Configure a Pod to Use a ConfigMap](https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/) | ||
| * [Understand SecurityContexts](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/) | ||
| * [Define an application’s resource requirements](https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/) | ||
| *[Memory](https://kubernetes.io/docs/tasks/configure-pod-container/assign-memory-resource/) | ||
| *[CPU](https://kubernetes.io/docs/tasks/configure-pod-container/assign-cpu-resource/) | ||
| *[QoS](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/) | ||
| * [Create & consume Secrets](https://kubernetes.io/docs/concepts/configuration/secret/) | ||
| * [Understand ServiceAccounts](https://kubernetes.io/docs/admin/service-accounts-admin/) | ||
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| ### [Multi-Container Pods] 10% | ||
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| * [Understand Multi-Container Pod design patterns](https://kubernetes.io/blog/2015/06/the-distributed-system-toolkit-patterns) | ||
| * [Paper](https://static.googleusercontent.com/media/research.google.com/en//pubs/archive/45406.pdf) | ||
| * [Ambassador](https://github.com/brendandburns/designing-distributed-systems/tree/master/ambassadors) | ||
| * [Adapter](https://github.com/brendandburns/designing-distributed-systems/tree/master/adapters) | ||
| * [Sidecar](https://github.com/brendandburns/designing-distributed-systems/tree/master/sidecars) | ||
| * [Shared](https://github.com/brendandburns/designing-distributed-systems/tree/master/sharded) | ||
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| ### [Observability] 18% | ||
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| * [Understand LivenessProbes and ReadinessProbes](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/) | ||
| * [Understand container logging](https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#logs) | ||
| * [Understand how to monitor applications in Kubernetes](https://kubernetes.io/docs/tasks/debug-application-cluster/resource-usage-monitoring/) | ||
| * [Monitoring Kubernetes](https://www.datadoghq.com/blog/monitoring-kubernetes-era/) | ||
| * [Understand debugging in Kubernetes](https://kubernetes.io/docs/tasks/debug-application-cluster/determine-reason-pod-failure/) | ||
| * [Application Introspection and Debugging](https://kubernetes.io/docs/tasks/debug-application-cluster/debug-application-introspection/) | ||
| * [Services](https://kubernetes.io/docs/tasks/debug-application-cluster/debug-service/) | ||
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| ### [Pod Design] 20% | ||
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| * [Understand how to use Labels, Selectors, and Annotations](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/) | ||
| * [Use label selectors to schedule Pods](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/) | ||
| * [Annotations](https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/) | ||
| * [Understand Deployments and how to perform rolling updates, rollbacks](https://kubernetes.io/docs/concepts/workloads/controllers/deployment/) | ||
| * Understand Jobs and CronJobs | ||
| * [Job](https://kubernetes.io/docs/concepts/workloads/controllers/jobs-run-to-completion/) | ||
| * [CronJob](https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/) | ||
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| ### [Services and Networking] 13% | ||
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| * [Understand Services](https://kubernetes.io/docs/concepts/services-networking/service/) | ||
| * CKAD+: [Life of a Packet [I] - Michael Rubin, Google](https://www.youtube.com/watch?v=0Omvgd7Hg1I) | ||
| * CKAD+: [The ins and outs of networking in Google Container Engine and Kubernetes (Google Cloud Next '17)](https://www.youtube.com/watch?v=y2bhV81MfKQ) | ||
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| * [Demonstrate basic understanding of NetworkPolicies](https://kubernetes.io/docs/tasks/administer-cluster/declare-network-policy/) | ||
| * [Blog: Kubernetes network policy](https://ahmet.im/blog/kubernetes-network-policy/) | ||
| * [Katacoda Calico](https://www.katacoda.com/projectcalico/scenarios/calico) | ||
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| ### [State Persistence] 8% | ||
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| * [Understand PersistentVolumeClaims for storage](https://kubernetes.io/docs/concepts/storage/volumes/) 7% | ||
| * [Understand persistent volumes and know how to create them](https://kubernetes.io/docs/concepts/storage/persistent-volumes/) | ||
| * [Understand access modes for volumes](https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes) | ||
| * [Understand persistent volume claims primitive](https://kubernetes.io/docs/concepts/storage/persistent-volumes/#persistentvolumeclaims) | ||
| * [Understand Kubernetes storage objects](https://kubernetes.io/docs/concepts/storage/volumes/#types-of-volumes) | ||
| * [Know how to configure applications with persistent storage](https://kubernetes.io/docs/tasks/configure-pod-container/configure-volume-storage/) | ||
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| ## Tips: | ||
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| get familiar with: | ||
| * [kubectl explain](https://blog.heptio.com/kubectl-explain-heptioprotip-ee883992a243) | ||
| * [kubectl cheatsheet](https://kubernetes.io/docs/user-guide/kubectl-cheatsheet/) | ||
| * When using kubecctl for investigations and troubleshooting utilize the wide output it gives your more details | ||
| ``` | ||
| $kubectl get pods -o wide --show-labels --all-namespaces | ||
| ``` | ||
| * In `kubectl` utilizie `--all-namespaces` to ensure deployments, pods, objects are on the right name space, and right desired state | ||
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| * for events and troubleshooting utilize kubectl describe | ||
| ``` | ||
| $kubectl describe pods <PODID> | ||
| ``` | ||
| * the '-o yaml' in conjuction with `--dry-run` allows you to create a manifest template from an imperative spec, combined with `--edit` it allows you to modify the object before creation | ||
| ``` | ||
| kubectl create service clusterip my-svc -o yaml --dry-run > /tmp/srv.yaml | ||
| kubectl create --edit -f /tmp/srv.yaml | ||
| ``` |
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