Imperative Way of Deploying Resources in Kubernetes

What is Kubectl?

The Kubectl is a command line interface software that allows you to run commands in the Kubernetes cluster. It acts as a communication bridge between users/clients and the Kubernetes cluster. It uses the Kubernetes API Server to authenticate with the Kubernetes Master Node to interact within the Kubernetes Cluster. The communication of API requests in the Kubernetes Cluster using kubectl to deploy the resources will be done with 2 approaches. The following are the 2 approaches used in Kubernetes deployment :...

Imperative Way of Deploying Resources in Kubernetes

In this Imperative approach, We have to specify the detailed instructions on the management of resources. What resources have to be used such as Kubernetes Pod, Kubernetes ReplicaSet, Deployments, and Daemon Sets… How to Use resources like Creating, Deleting, and Replacing to reach the desired final state. For example, `kubectl create`, `kubectl scale`, `kubectl delete`… This Approach provides full control over the deployment process allowing the operations to be defined manually as a sequence of operations to reach the desired state....

Declarative Way of Deploying Resources in Kubernetes

The declarative approach is an effective way in kubernetes, The desired specification of resources are specified through Yaml configuration files. While execution it will check the current and desired state of resources with specified resource names and then perform the updates that are required. This declarative way provides the optimization and better utilization of resources. The popular command for this example is `kubectl apply` ....

Kubectl Usage Approaches

In earlier times, kubectl was mostly used for interactive or experimental reasons to make the development work easier. After once kubernetes came into usage the functionality purpose of kubectl usage is changed. It comes to serve as a key component in configuring the production environment deployment enhancing the agility through application manifest files. kubectl create in the imperative approach and kubectl apply in the declarative approach are two essential kubectl commands in resource deployment of Kubernetes....

Usage of Kubectl Create in Deploying K8S Resources

The kubectl create command is an imperative way of deploying resources on a Kubernetes cluster . The following are a few popular resources that can be created using kubectl create command....

Usage of Kubectl Apply in Deploying K8S Resources

The kubectl apply command is a declarative way of deploying resources on a cluster using YAML manifest files....

Difference Between Kubernetes Create and Kubernetes Apply

The following are the main difference between kubernetes create and kubernetes apply...

Conclusion

The selection of command usage either `kubectl create` or `kubectl apply` in Kubernetes management of resources depends on the your decision of following imperative and declarative approaches. The Imperative approach with `kubectl create` facilitates sequential control step by step that will be suitable for manual resource manipulation. Conversely, the declarative approach with `kubectl apply` provides the efficiency and the automation of the desired state of resources in Yaml files. The declarative approach in k8s automatically determines and executes the necessary actions required for the desired state. The selection of approach for using these commands depends on the desired level of control while deploying and managing the resources within a Kubernetes cluster....

Kubectl Create and Kubectl Apply – FAQs

When Should I Use `kubectl create` Instead of `kubectl apply`?...