What is Kubectl Kustomize?

Kustomize is a standalone tool to customize Kubernetes objects through a kustomization file. Since 1.14, Kubectl also supports the management of Kubernetes objects using a kustomization file.

What is Kustomize used for?

Kustomize is a configuration management solution that leverages layering to preserve the base settings of your applications and components by overlaying declarative yaml artifacts (called patches) that selectively override default settings without actually changing the original files.

Is Kustomize part of Kubectl?

Kustomize traverses a Kubernetes manifest to add, remove or update configuration options without forking. It is available both as a standalone binary and as a native feature of kubectl .

What is helm in Kubernetes?

Helm is a Kubernetes deployment tool for automating creation, packaging, configuration, and deployment of applications and services to Kubernetes clusters. Kubernetes is a powerful container-orchestration system for application deployment.

What is Helm chart?

Helm uses a packaging format called charts. A chart is a collection of files that describe a related set of Kubernetes resources. A single chart might be used to deploy something simple, like a memcached pod, or something complex, like a full web app stack with HTTP servers, databases, caches, and so on.

What is Template in Kubernetes?

The template is a template for how to create those pods. If you want to use a deployment (where K8s automatically maintains a configured number of replicas of your pod) then you must have a template for creating the pods. Note that the spec part also belongs to the template.

What is Skaffold?

Skaffold is a command line tool that facilitates continuous development for Kubernetes-native applications. Skaffold handles the workflow for building, pushing, and deploying your application, and provides building blocks for creating CI/CD pipelines.

What is Kubectl apply?

The command set kubectl apply is used at a terminal's command-line window to create or modify Kubernetes resources defined in a manifest file. This is called a declarative usage. The state of the resource is declared in the manifest file, then kubectl apply is used to implement that state.

What is Kaniko Skaffold?

Skaffold: A command line utility that allows for iterative local development against a Kubernetes cluster. Kaniko: A build mechanism by which container images can be built and pushed to a registry without the use of Docker. This has been recently integrated into Skaffold.

What is Kubernetes manifest?

A Kubernetes manifest describes the resources (e.g., Deployments, Services, Pods, etc.) you want to create, and how you want those resources to run inside a cluster.

What is Knative in Kubernetes?

Knative (pronounced kay-nay-tiv) is an open source community project which adds components for deploying, running, and managing serverless, cloud-native applications to Kubernetes. The serverless cloud computing model can lead to increased developer productivity and reduced operational costs.

What is difference between Docker and Kubernetes?

In a nutshell, Docker is a suite of software development tools for creating, sharing and running individual containers; Kubernetes is a system for operating containerized applications at scale. Think of containers as standardized packaging for microservices with all the needed application code and dependencies inside.

What is rollout in Kubernetes?

Rollout simply means rolling update of application. Rolling update means that application is updated gradually, gracefully and with no downtime.

What is Kubernetes architecture?

Kubernetes is an architecture that offers a loosely coupled mechanism for service discovery across a cluster. A Kubernetes cluster has one or more control planes, and one or more compute nodes.

Is Helm only for Kubernetes?

In simple terms, Helm is a package manager for Kubernetes. Helm is the K8s equivalent of yum or apt. Helm deploys charts, which you can think of as a packaged application. It is a collection of all your versioned, pre-configured application resources which can be deployed as one unit.

What is Helm vs Kubernetes?

With this analogy, think of the Kubernetes cluster as an OS; Helm is the tool that enables users to install an application on that Kubernetes cluster. Helm is a packaging format that works well with simple applications like stateless microservices and REST-based APIs with states stored externally in the cloud.

Why is Helm used?

Helm helps IT teams manage Kubernetes applications through Helm Charts. These charts can enable teams to define, install, and upgrade even the most complex Kubernetes applications.

What is rancher in Kubernetes?

Rancher is a complete software stack for teams adopting containers. It addresses the operational and security challenges of managing multiple Kubernetes clusters across any infrastructure, while providing DevOps teams with integrated tools for running containerized workloads.

What is Prometheus in Kubernetes?

Prometheus uses Kubernetes APIs to read all the available metrics from Nodes, Pods, Deployments, etc. For this reason, we need to create an RBAC policy with read access to required API groups and bind the policy to the monitoring namespace.

What are Helm releases?

A Release is an instance of a chart running in a Kubernetes cluster. One chart can often be installed many times into the same cluster. And each time it is installed, a new release is created. Consider a MySQL chart. If you want two databases running in your cluster, you can install that chart twice.

What is Knative vs Kubernetes?

Knative (pronounced Kay-NAY-tive) is an extension of the Kubernetes container orchestration platform that enables serverless workloads to run on Kubernetes clusters, and provides tools and utilities that make building, deploying and managing containerized applications within Kubernetes a simpler and more 'native-to- ...

Is Knative a PaaS?

Knative is not positioned as PaaS but a general-purposes serverless orchestration framework that can be used to build your own serverless PaaS. Knative is the forerunner to establish a standard framework for the design of serverless architectures.

Does Knative need Istio?

If you want to get up and running with Knative quickly, we recommend installing Istio without automatic sidecar injection. This install is also recommended for users who don't need the Istio service mesh, or who want to enable the service mesh by manually injecting the Istio sidecars.