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Scalable > Create upto 50 servers per minute. (Scalable 50x per minute)
Highly Available > Each cluster has 20 nodes. High availability is guaranteed.
You are only billed for nodes created, Until the nodes are destroyed. You get master nodes for FREE. Each nodes are billed based on hourly billing.
What is a Kubernetes Service?
Kubernetes Services is a service that consists of a grouping of pods which are running on the cluster. It is also a concept which defines a logical set of Pods. And in Kubernete services, the set of Pods which are targeted by a Service is normally determined by a Label Selector. Moreover, Kubernetes services can efficiently power a microservice architecture.
Kubernetes is portable and also a popular open-source platform for managing containerized workloads and services where it helps both declarative configuration and automation. In Kubernetes it supports a lot of application services which is simple Endpoints API which can be updated whenever the set of Pods in a Service changes. Kubernetes services, support, and tools are widely available.Get it Now
Virtual IPs and service proxies
In Kubernetes cluster every node will run a Kube-proxy which is responsible for performing a form of virtual IP for services other than ExternalName. With each new release of Kubernetes version, there are different layers where new features are added. With the latest version of Kubernetes that is after Kubernetes v1.1, you get iptables proxy. And in iptables, you no need to switch back between userspace and kernel space and it is faster and more reliable than the userspace proxy.
Choosing Your Own IP Address
Choose your own cluster IP address as part of a service creation request. So to do this you need to set the .spec.clusterIP field in your Kubernetes cluster. And if you already have a DNS entry and if you wish to replace it then it is difficult to re-configure. You also need to see that you need to choose a valid IP address that is within the service-cluster-IP-range CIDR range which is a flag to the API server.
Our Kubernetes supports 2 main services that are environment variables and DNS. In environment variables when a pod is running on a node the kubelet adds will set of the environment variables from active service. And in it - it supports both Docker links compatible variables and simpler variables. In DNS server an optional cluster is added on. In DNS service a DNS server will watch the Kubernetes API for newly created service and performs a set of DNS records for each.
If you need many services on the Kubernetes cluster then you need to have more than one port. So with our Kubernetes service, it supports multiple ports which are definitions on a Service object. And while using the multiple ports you need to give all of your ports names so that endpoints can be rephrase.
The Glory Details of Virtual IPs
In Kubernetes it will avoid collisions or crashes. Because one of the basic perspectives of Kubernetes is that users should not be presented to circumstances that could make their actions to fail through no fault of their own. In this scenario, it will be because of network ports. Because sometimes users will choose a port number so in that case there is a chance to collide with another user. To overcome this issue you need to allocate each server with its own IP address.
Depending upon your requirements of load-balancing and a single service IP you can easily create a headless service by specifying "None" for your Kubernetes cluster IP. This will reduce the coupling to the Kubernetes system and allow your developers to have the better freedom to design. Moreover, you can easily build an application on API which uses self-registration pattern and other discovery systems.
If you want to expose some of your application onto an external cluster IP address then in Kubernetes Service it allows you to do so. Over there you can also specify what kind of service that you want. You can choose the service type that you want to use here are some of the services that you can use- ClusterIP, NodePort, LoadBalancer, ExternalName. You can also use the PROXY protocol support on HostingRaja, ELB Access Logs on HostingRaja, and Other ELB annotations with our Kubernetes services.
If you want to use userspace proxy for VIPs then it will work only on the medium scale but if you want to use it with large cluster then it is not possible. And using the userspace proxy will cover the source IP of a container accessing a Service. This will give you a strong firewall. Moreover, the iptables proxier will not involve in-cluster source IPs but sometimes it will still impact clients coming through a load-balancer or node-port. This type field is designed as nested functionality where each level adds to the previous.
It is a service which is default in Kubernetes service. So choosing ClusterIP will make the service is reachable from the cluster. As it gives service inside your cluster you get the privileges to have access to other apps inside your cluster. And there is no external access.
A NodePort service is one of the most simple ways to get external traffic directly to your service. In NodePort it will expose the service on each Node’s IP at an inactive port. Basically, a NodePort service has two difference from a normal “ClusterIP” service. So the ClusterIP service, for which the NodePort service will route is created automatically.
A LoadBalancer service is the standard method to open a service of the internet. In load balancer, it will show the services that externally using HostingRaja's load balancer. It will automatically create a route in the external load balancer from NodePort and ClusterIP services.
It outlines the service to the contents of the externalname filed by changing a CNAME record with its value. Moreover, in this, no proxying is set up.