Labels are key/value pairs that are attached to objects, such as pods. Labels are intended to be used to specify identifying attributes of objects that are meaningful and relevant to users, but do not directly imply semantics to the core system. Labels can be used to organize and to select subsets of objects.
Indeed, 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.
Then, What are replicas in Kubernetes? A ReplicaSet is a process that runs multiple instances of a Pod and keeps the specified number of Pods constant. Its purpose is to maintain the specified number of Pod instances running in a cluster at any given time to prevent users from losing access to their application when a Pod fails or is inaccessible.
What is Minikube in Kubernetes? Minikube is a lightweight Kubernetes implementation that creates a VM on your local machine and deploys a simple cluster containing only one node. Minikube is available for Linux, macOS, and Windows systems.
In the same way Why selector is used in Kubernetes? Introduction to Kubernetes Selector. Kubernetes selector allows us to select Kubernetes resources based on the value of labels and resource fields assigned to a group of pods or nodes.
What is EKS?
Amazon Elastic Container Service for Kubernetes (EKS) is a cloud-based container management service that natively integrates with Kubernetes to deploy applications.
What is Tiller in Kubernetes?
Tiller, the server portion of Helm, typically runs inside of your Kubernetes cluster. But for development, it can also be run locally, and configured to talk to a remote Kubernetes cluster.
What is Replicasets?
A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. As such, it is often used to guarantee the availability of a specified number of identical Pods.
What is Kubernetes namespace?
Namespaces are a way to organize clusters into virtual sub-clusters — they can be helpful when different teams or projects share a Kubernetes cluster.
What is CrashLoopBackOff in Kubernetes?
CrashLoopBackOff is a common error in Kubernetes, indicating a pod constantly crashing in an endless loop. You can identify this error by running the kubectl get pods command – the pod status will show the error like this: NAME READY STATUS RESTARTS AGE my-pod-1 0/1 CrashLoopBackOff 2 1m44s.
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 k3 in Kubernetes?
K3s is a highly available, certified Kubernetes distribution designed for production workloads in unattended, resource-constrained, remote locations or inside IoT appliances.
What is cluster in Kubernetes?
A Kubernetes cluster is a set of nodes that run containerized applications. Containerizing applications packages an app with its dependences and some necessary services. They are more lightweight and flexible than virtual machines.
What is worker node in Kubernetes?
A Node is a worker machine in Kubernetes and may be either a virtual or a physical machine, depending on the cluster. Each Node is managed by the control plane. A Node can have multiple pods, and the Kubernetes control plane automatically handles scheduling the pods across the Nodes in the cluster.
How many containers a pod can run?
Remember that every container in a pod runs on the same node, and you can’t independently stop or restart containers; usual best practice is to run one container in a pod, with additional containers only for things like an Istio network-proxy sidecar.
What is container runtime?
A container runtime, also known as container engine, is a software component that can run containers on a host operating system.
What is Kubernetes Amazon?
Kubernetes is open-source software that allows you to deploy and manage containerized applications at scale. Kubernetes manages clusters of Amazon Elastic Compute Cloud (EC2) compute instances and runs containers on those instances with processes for deployment, maintenance, and scaling.
What does EC2 mean?
Amazon Elastic Compute Cloud (Amazon EC2) provides scalable computing capacity in the Amazon Web Services (AWS) Cloud.
What is node group in Kubernetes?
In Kubernetes, node groups are a useful mechanism for creating pools of resources that can enforce scheduling requirements. They also provide a utility for shifting workloads around during cluster management and updates.
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 Helm init?
Synopsis. The Kubernetes package manager. To begin working with Helm, run the ‘helm init’ command: $ helm init. This will install Tiller to your running Kubernetes cluster. It will also set up any necessary local configuration.
What is Helm lint?
Synopsis. This command takes a path to a chart and runs a series of tests to verify that the chart is well-formed. If the linter encounters things that will cause the chart to fail installation, it will emit [ERROR] messages.
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