What’s the difference between a Service and a Deployment in Kubernetes?
A deployment is responsible for keeping a set of pods running
. A service is responsible for enabling network access to a set of pods. … The deployment could be scaled up and down and pods could be replicated.
Why is Kubernetes a service?
Kubernetes as a Service: Key Capabilities
Deploy and manage—using a convenient interface to quickly deploy and update clusters
. Continuous monitoring—including centralized and customized dashboards tracking metrics and providing insights on cluster health.
What is a service Kubernetes?
A Kubernetes service is
a logical abstraction for a deployed group of pods in a cluster
(which all perform the same function). Since pods are ephemeral, a service enables a group of pods, which provide specific functions (web services, image processing, etc.) to be assigned a name and unique IP address (clusterIP).
What is service and ingress in Kubernetes?
In Kubernetes, an Ingress is
an object that allows access to your Kubernetes services from outside the Kubernetes cluster
. You configure access by creating a collection of rules that define which inbound connections reach which services. This lets you consolidate your routing rules into a single resource.
What are the different types of services in Kubernetes?
- ClusterIP. In Kubernetes, the ClusterIP service is indeed the standard form of service. …
- NodePort. Each node in your cluster has an open port called a NodePort. …
- LoadBalancer. …
- ExternalName.
What is purpose of service Yaml?
Services enable a loose coupling between dependent Pods
. A Service is defined using YAML (preferred) or JSON, like all Kubernetes objects. The set of Pods targeted by a Service is usually determined by a LabelSelector (see below for why you might want a Service without including selector in the spec).
How can you tell a fake set in Kubernetes?
- kubectl apply -f https://kubernetes.io/examples/controllers/frontend.yaml. You can then get the current ReplicaSets deployed:
- kubectl get rs. And see the frontend one you created:
- NAME DESIRED CURRENT READY AGE frontend 3 3 3 6s. You can also check on the state of the ReplicaSet:
- kubectl describe rs/frontend.
Is Kubernetes owned by Google?
Google Cloud
is the birthplace of Kubernetes—originally developed at Google and released as open source in 2014. Kubernetes builds on 15 years of running Google’s containerized workloads and the valuable contributions from the open source community. … Learn more about GKE, Google Cloud’s managed Kubernetes.
Is Kubernetes software as a service?
Kubernetes leverages the simplicity of
Platform as a Service
(PaaS) when used on the Cloud. It utilises the flexibility of Infrastructure as a Service (IaaS) and enables portability and simplified scaling; empowering infrastructure vendors to provision robust Software as a Service (Saas) business models.
What is difference between Docker and Kubernetes?
A fundamental difference between Kubernetes and Docker is that
Kubernetes is meant to run across a cluster while Docker runs on a single node
. … Kubernetes pods—scheduling units that can contain one or more containers in the Kubernetes ecosystem—are distributed among nodes to provide high availability.
What is ingress rule?
Kubernetes Ingress is
an API object that provides routing rules to manage external users’ access to the services in a Kubernetes cluster
, typically via HTTPS/HTTP. With Ingress, you can easily set up rules for routing traffic without creating a bunch of Load Balancers or exposing each service on the node.
What is Kubernetes interview questions?
- What is Kubernetes? …
- What are K8s? …
- What is orchestration when it comes to software and DevOps? …
- How are Kubernetes and Docker related? …
- What are the main differences between the Docker Swarm and Kubernetes? …
- What are the main components of Kubernetes architecture?
Is Kubernetes service a load balancer?
In other words, Kubernetes services are
themselves the crudest form of load balancing traffic
. In Kubernetes the most basic type of load balancing is load distribution. Kubernetes uses two methods of load distribution. Both of them are easy to implement at the dispatch level and operate through the kube-proxy feature.
What are labels in Kubernetes?
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.
How many types of Kubernetes are there?
There are
three different types
of services. The first, and default type, is called ClusterIp. A ClusterIp type service allows network traffic to be routed to your collection of pods from other pods running within the cluster.
What is StatefulSet in Kubernetes?
StatefulSets represent
a set of Pods with unique, persistent identities and stable hostnames that GKE maintains regardless of where
they are scheduled. The state information and other resilient data for any given StatefulSet Pod is maintained in persistent disk storage associated with the StatefulSet.
