What can Docker Swarm be used for

What is container orchestration?

Container orchestration automates the deployment, management, scaling and networking of containers. Organizations that need to provision and manage hundreds or thousands of Linux® containers and hosts can benefit from container orchestration.

You can use container orchestration in any environment in which you use containers. With container orchestration, you can deploy an application in different environments without special customization. And with microservices in containers, you can orchestrate your services such as storage, networking and security even more easily.

Containers are ideal for deploying and running your microservice apps independently. Containers allow multiple parts of an app to run independently on the same hardware in microservices. At the same time, the individual components and lifecycles can be controlled much better.

The management of the container lifecycles through orchestration also supports the DevOps teams, who integrate them into the CI / CD workflows. Together with APIs and DevOps teams, containerized microservices form the basis for cloud-native applications.

An introduction to container orchestration for businesses with Kubernetes

What is container orchestration for?

You can use container orchestration to automate and manage the following tasks:

  • Provisioning and deployment
  • Configuration and planning
  • Resource Allocation
  • Container availability
  • Scale or remove containers to evenly distribute workloads across your infrastructure
  • Load balancing and traffic routing
  • Monitoring the condition of the container
  • Configure applications based on the container in which they run
  • Securing interactions between containers

Container orchestration tools

Container orchestration tools provide a framework for managing containers and microservices architectures on a large scale. There are many container orchestration tools that can be used for container lifecycle management. Some popular options are Kubernetes, Docker Swarm, and Apache Mesos.

Kubernetes is an open source container orchestration tool originally developed and designed by Google. In 2015, Google donated the Kubernetes project to the newly established Cloud Native Computing Foundation.

With Kubernetes orchestration, you can develop application services that span multiple containers, plan and scale containers across clusters, and monitor their health over time.

Kubernetes eliminates many of the manual processes that come with deploying and scaling containerized applications. You can cluster groups of hosts (either physical or virtual machines) running Linux containers, and Kubernetes gives you the platform on which to easily and efficiently manage these clusters.

More generally, with Kubernetes you can implement an infrastructure in your productive environment that is completely container-based and that you can rely on.

These clusters can include hosts in public, private, or hybrid clouds. Because of this, Kubernetes is the ideal platform for hosting cloud-native applications that need to scale quickly.

Kubernetes also helps you with workload portability and load balancing by allowing you to move applications without redeveloping them.

Main components of Kubernetes:

  • Cluster: A control plane and at least one calculating machine or at least one node.
  • Control plane: The entirety of the processes that control the Kubernetes nodes. All task assignments are output here.
  • Kubelet: This service runs on the nodes, reads out the container manifests and ensures that the defined containers are started and in operation.
  • Pod: A group of one or more containers deployed in a single node. All containers in a pod share an IP address, IPC, host name and other resources.

How does container orchestration work?

When using a container orchestration tool such as Kubernetes, describe the configuration of an application in a YAML or JSON file. The configuration file tells the configuration management tool where to find the container images, how to set up a network, and where to store logs.

When a new container is deployed, the container management tool automatically plans the deployment in a cluster, takes into account all defined requirements or restrictions and finds the right host. The orchestration tool then manages the life cycle of the container based on the specifications set in the build file.

You can use Kubernetes Patterns to manage the configuration, lifecycle, and scaling of container-based applications and services. These repeatable patterns are the tools a Kubernetes developer needs to build complete systems.

Container orchestration can be used in any environment that containers run in, such as: B. on local servers and public or private cloud environments.

Container orchestration in companies

Real production apps span multiple containers. These containers must be deployed on multiple server hosts. This is where Red Hat® OpenShift® comes in. Red Hat OpenShift is Kubernetes for business and so much more.

Red Hat OpenShift integrates all of the additional technology components that make Kubernetes powerful and enterprise-grade, including registry, networking, telemetry, security, automation, and services.

With OpenShift, developers can build new containerized apps, host them, and deploy them in the cloud with the scalability, control, and orchestration needed to turn a good idea into a new business quickly and easily.