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Cloud-based apps used to require an enormous amount of space on a server to themselves. This server would have to host both the application itself, along with any dependencies and libraries that the application required. This changed with the introduction of containers. A container allows a developer to package their applications up with whatever libraries and other resources are required. The server then only needs to provide the operating system, in this case, Linux.
Container management is an important aspect of cloud-based software development. Now that many enterprises are turning to DevOps software and platforms as services, container management is becoming a more relevant subject by the day. Docker is the piece of software most commonly associated with containers. It was the first piece of software developed for managing containers.
While the concept of containers is a powerful one, and Docker is an effective display of the potential it offers, there are some problems with Docker. Most of these problems can be summed up by simply saying that Docker isn't very user-friendly.
Kubernetes is a platform that is designed to facilitate the deployment and management of container-based apps. Kubernetes affords developers a level of agility in the creation and deployment of containerized applications that would otherwise be impossible. Rather than using containers, Kubernetes uses pods instead. Pods can be thought of as essentially being containers that contain containers. And on those rare occasions where things do go wrong, Kubernetes makes the process of destroying, creating, and deploying apps much easier.
In order to manage your resources effectively, scalability is important. If you have resources going unused, you may well be paying for more cloud computing power than you need. On the other hand, if you keep your available resources low, you run the risk of hitting a ceiling and your app finding itself without the resources it needs to function properly. Kubernetes' Google ancestry is relevant here. Google is great at managing services at a very large scale. As a result, Kubernetes manages resources effectively and efficiently. Kubernetes is dynamic, able to allocate and reallocate resources as they are needed.
The container-based approach to app development offers numerous advantages to developers, one of the most important of which is the ability to roll out new versions of their apps without any interruption in service. This graceful updating and lack of downtime can prove to be especially important for developers who are looking to provide their customers with uninterrupted service. If your business is dependent upon cloud-based applications, and the continual deliverance of service, Kubernetes is the often the perfect solution, combining the need for ease-of-use with a robust set of capabilities. Kubernetes can be deployed on any of our VPS packages, meaning that any of our customers can take advantage of it.
Kubernetes remains completely untethered to any particular cloud environment. This versatility and ability to operate as part of any setup is a key aspect of Kubernete's success. Containers were always designed to be compatible with any version of Linux. This was essential if container-based apps were to be able to call upon a variety of different services, each stored on a completely different part of the internet. Kubernetes makes it possible to create dynamic cloud-based services that call upon libraries and other resources from around the internet, bringing their capabilities together to form novel new types of apps.
Kubernetes automates the deployment and management of container-dependent apps that operate at scale. This makes it the perfect solution for enterprises who need a reliable and uninterrupted service from a cloud-based application. Kubernetes is most frequently used with Docker, but is open-source and has been designed to work with any container system that conforms to the widely-used Open Container Initiative (OCI). Its open-source nature only serves to solidify the versatility of its capabilities, there are few situations that Kubernates cannot be used to solve. If you need to manage container-based apps at a large scale, Kubernete's pods are the perfect way of doing so.
Setting up a virtual network between pods in Kubernetes is much easier than networking used to be when using Docker. For example, pods in Kubernetes can communicate with one another without the need for network address translation (NAT). Instead, Kubernetes utilises nodes, which are able to communicate with any of the pods on the platform without having to use NAT, every pod sees itself as having a specific IP address, which is the same address seen for this pod by every other pod on the network.
Services allow Kubernetes to maintain the connection between pods, regardless of what the current state of that pod is. The problem is that whenever a pod scales up or down or encounters a fatal error that requires the pod to reboot, it is assigned a new IP address. In order to avoid this causing issues with other pods that are using the old IP addresses, Kubernetes utilizes services. Services keep track of the current states of pods, meaning that the user can keep track of the current IP address of any pod. Kubernetes service function as abstraction layers, running on top of the pods, assigning a single virtual IP address to groups of pods.
The Kubernetes platform can be installed on any of our Linux-based VPS, opening the doorway to a whole new world of possibilities for our clients. Contact us today to find out which of our server packages is best for you. If you are hoping to set up Kubernetes on your new server, speak to us about which of our packages are Kubernetes compatible. If you have previous experience using containers, such as with Docker, you'll feel right at home with Kubernetes.