How deeply does Road to Kubernetes cover kubectl apply?

Explains manifest application and unchanged-image behavior, but stops short of kubectl internals.

Kubectl apply

kubectl apply is a kubectl command that creates or updates Kubernetes resources from configuration manifests.

kubectl apply creates or updates Kubernetes resources from configuration manifests. Running kubectl apply -f apps/ applies manifest changes from the apps/ directory. section 8.5.2

Use kubectl apply as part of a repeatable deployment workflow:

Configure kubectl with a kubeconfig file. section 8.5.2
Inspect running Pods and Deployments with kubectl get. section 8.5.2
Apply changed manifests with kubectl apply -f apps/. section 8.5.2
Restart Deployments explicitly when reusing an unchanged image tag such as :latest. section 8.5.2

How Road to Kubernetes covers it

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Also explained in

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Acing the Certified Kubernetes Administrator Exam, Second Editionkubectl apply is a kubectl command that creates a Kubernetes resource or updates an existing resource from configuration.
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Learn Docker in a Month of Lunches, Second Editionkubectl apply is a kubectl command that creates or updates Kubernetes resources from declarative configuration.
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Kubernetes in Action, Second Editionkubectl apply is a kubectl command that creates or updates Kubernetes objects from a manifest file or set of manifest files.
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Kubernetes for Developerskubectl apply is a kubectl command that creates or updates Kubernetes resources from declarative configuration.
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Bootstrapping Microservices, Second Edition: With Docker, Kubernetes, GitHub Actions, and Terraformkubectl apply is a Kubernetes command that creates or updates cluster resources from declarative configuration files or manifests.

Compare how 6 books explain kubectl apply →

Related concepts

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Kubernetes manifestuses · A Kubernetes manifest is a declarative configuration document, typically written in YAML or JSON, that specifies Kubernetes resources and their desired state.
shell scriptused by · Bash is a Unix command-line shell and scripting language for executing commands interactively and through scripts.
ReplicaSetused by · A ReplicaSet is a Kubernetes workload resource that maintains a specified number of Pods matching a defined Pod template.
MongoDBconfigures · MongoDB is a document-oriented database management system that stores data as BSON documents, typically organized into collections.
Kubernetesproduces · Kubernetes is an open-source platform for orchestrating and automating the deployment, scaling, and management of containerized workloads across computing clusters.

This explainer was generated by Manning's knowledge graph from the text of Road to Kubernetes. The section links point to the parts of the book it draws on.