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This article mainly explains "how to understand Linux containers and Kubernetes cloud services". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's ideas to study and learn "how to understand Linux containers and Kubernetes cloud services".

The journey to cloud begins with Linux.

The journey of hybrid cloud begins with Linux. Nine of the top 10 public cloud vendors run on Linux. Private cloud technologies, such as the Red Hat OpenStack platform, are also based on Linux. Most importantly, Red Hat OpenShift-like containers and Kubernetes platforms are also based on Linux. Linux is like the core of the cloud * hybrid cloud and multi-cloud systems.

The operating system you choose in a hybrid cloud environment is critical to the success or failure of your strategy. We hope that when the application operation is consistent in the local and public environments. It is essential to ensure that content such as management, compliance, and security operates in the same way in multiple heterogeneous environments. Hybrid cloud environments where common operating systems are deployed in both local and public clouds can achieve application consistency and portability, and can be managed by the same tools and processes to gain the same advantages.

For a large number of organizations that have used Linux to run their data centers and applications, many are also using RHEL to support their core business. RHEL is designed to support running some of the most stable virtual or physical environments with a consistent and long lifecycle, safer and easier to manage across multiple environments. RHEL is supported by the commercial open source software ecosystem of the IT industry, which is provided by certified third-party software, hardware, and cloud. With certification for standards such as General Standards, Federal Information processing Standards (FIPS) and payment Card Industry (PCI), RHEL is a reliable choice for regulation and corporate compliance.

Whether the * * step is to migrate a workload from local to a public cloud or to run in a private cloud environment, users should consider the operating system running the workload. Many companies want to migrate existing workloads to a cloud environment. On the cloud, they want to ensure that applications can be easily migrated to the cloud and still operate consistently, no matter where they deploy the application, even from bare metal or a separate virtualized environment. This is why RHEL is so important in your cloud journey.

Even before migrating to a container, RHEL can simplify the migration of these batches of workloads to a cloud environment. That's why thousands of companies use Red Hat Enterprise Linux in the public cloud today. With RHEL as the foundation of the cloud platform, you can create a more consistent and common operating environment for applications that span traditional, virtualized, and cloud environments. Applications that have been certified on Red Hat Enterprise Linux can also run in the cloud.

Red Hat Enterprise Linux provides the following capabilities:

Portability: portability of applications across different cloud and non-cloud environments

Operational consistency

Robust security: allows you to locate potential security vulnerabilities

Consistent internal and compliance

General Update and Management

Recently, Red Hat released Red Hat Enterprise Linux 8, an intelligent operating system for hybrid and multi-cloud. RHEL 8 software subscriptions include Red Hat Insights. Red Hat Insights is Red Hat's decades-old predictive analysis engine management service that allows your application to run in an optimized and secure environment. Because it is part of the RHEL subscription, Insights users can get the same experience no matter where they deploy their operating system.

Updates to Red Hat Enterprise Linux 8 also include faster and easier deployment and management capabilities, enhanced security, and improvements in network capabilities. Application Streams makes it easier for developers to use development tools and components without affecting the underlying stability of the platform. In addition, with the release of Red Hat common base images, RHEL makes it easier to use and create more stable and secure containerized applications in hybrid clouds.

Most importantly, by using a common Red Hat Enterprise Linux operating environment everywhere, you are ready to move on to the next phase of your journey to the cloud.

Second, the next step: Linux container and Kubernetes

When the application runs stably in a hybrid cloud of local and public cloud deployment based on the RHEL operating system, you can move on to the next step: cloud native application deployment based on Linux containers and Kubernetes.

1) OpenShift

OpenShift is the next step in your cloud journey, providing a general DevOps operating platform that allows you to orchestrate cloud native and traditional applications in both private and public cloud environments.

OpenShift is the leading enterprise Kubernetes platform. The platform is built on Red Hat Enterprise Linux and supports large-scale container orchestration and key developer services. Basically, containers are designed to help you build application-level abstractions for greater flexibility, speed, and efficiency. How the container operates depends on the relationship between the host kernel and the container user space. This is why the relationship between RHEL and OpenShift is so important.

OpenShift supports orchestrating Linux container images across multiple environments. This provides a DevOps environment that can be deployed more quickly and based on micro-service applications, thus naturally turning your Red Hat Enterprise Linux-based applications into container-based and cloud-based native applications. Based on the Linux operating system, OpenShift inherits the advantages of Red Hat Enterprise Linux, including security features, third-party hardware authentication, third-party cloud authentication, stability and lifecycle management.

OpenShift provides a cloud abstraction layer that enables you to implement hybrid clouds deployed across multiple public and private clouds, thus creating a single virtual cloud. This portability and transferability makes it easy to migrate workloads and specific microservices to other OpenShift clusters.

With the release of Red Hat OpenShift 4, Red Hat provides hosted OpenShift public cloud services such as OpenShift Dedicated and Azure Red Hat OpenShift. OpenShift 4 enables you to adopt a cloud infrastructure for your workloads while maintaining the ability to migrate between multiple clouds and manage through a single management platform.

The release of OpenShift 4 brings cloud management to the next step. The new version includes the Operators function. This feature encodes operational knowledge of application operation, maintenance, and management into the software, eventually enabling you to manage, update, and run containerization functions on OpenShift as if you were in the public cloud. Operators also enables you to integrate other cloud native services into your OpenShift multi-cloud environment.

2) Rich hybrid cloud services

Now that you have a common environment in which applications can be run and built, you can use new application development services with the same consistency and portability on any platform. Red Hat provides cloud and certified container services based on OpenShift to run with your hybrid cloud environment. It has a rich ecosystem of more than 100 ISV and 150 software images. At the same time, Red Hat is trying to make its ecology richer. Red Hat also provides a cloud native application development environment through Red Hat CodeReady Workspaces. Many emerging cloud services are developed in close integration with Kubernetes. For example, Camel-K technology is part of Red Hat integration and API management products in OpenShift. We are also improving how to use Quarkus to develop Java applications in the Kubernetes native environment, which can improve the performance of Java many times.

Using RHEL 8 as the foundation of the environment is a step towards the cloud. By adding containers built on Red Hat Universal Base Image, you can have a solid foundation to deploy cloud capabilities. With OpenShift, your journey to cloud is just around the corner. Your application can scale across multiple public and private cloud environments, while enabling the security features, consistency, authentication, and portability that your organization depends on, and supporting next-generation cloud services.

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