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      When Kubernetes is not the solution

      pubsub.slavino.sk / infoworldcom · Tuesday, 26 January, 2021 - 11:00 edit

    Kubernetes is just the latest example of a powerful technology that can provide a solid solution in many instances. Although it may seem like all the cool kids are choosing Kubernetes-related technology, it’s not right for every application. When a technology has such a huge following that its use becomes a forgone conclusion, that’s when mistakes are made and projects get derailed.

    Most enterprises that are moving to cloud-based platforms will consider using containers and Kubernetes. Many enterprises using cloud already are also using Kubernetes. Kubernetes does provide many resources that make it easier to manage and scale distributed systems, including microservices. It’s also an orchestration system, meaning we can bind together processes and services to form larger, more holistic solutions.

    To read this article in full, please click here

    Značky: #Rozne, #Containers, #Kubernetes

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      Using OPA with GitOps to speed cloud-native development

      pubsub.slavino.sk / infoworldcom · Thursday, 21 January, 2021 - 11:00 edit

    One risk in deploying fleets of powerful and flexible clusters on constantly changing infrastructure like Kubernetes is that mistakes happen. Even minute manual errors that slip past review can have substantial impacts on the health and security of your clusters. Such mistakes, in the form of misconfigurations, are reportedly the leading cause of cloud breaches, for example. And, with everything that can happen in the containerized world, these types of mistakes are virtually guaranteed to occur.

    The question, then, is how developers and platform engineers can, under today’s accelerated development timeframes, minimize these errors — if not eliminate them entirely for the vast majority of common cases.

    To read this article in full, please click here

    Značky: #Kubernetes, #Devops, #Security, #Rozne

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      What’s new in Kubernetes 1.21

      pubsub.slavino.sk / infoworldcom · Wednesday, 9 December, 2020 - 16:00 edit · 1 minute

    The newest version of Kubernetes , 1.20, introduces the following major changes:
    • The Docker runtime is being deprecated. However, this doesn’t mean Docker images or Dockerfiles don’t work in Kubernetes anymore . It just means Kubernetes will now use its own Container Runtime Interface (CRI) product to execute containers instead of the Docker runtime. For most users this will have no significant impact—e.g., any existing Docker images will work fine. But some issues might result when dealing with runtime resource limits, logging configurations, or how GPUs and other special hardware interact with the runtime (something to note for those using Kubernetes for machine learning). The previous link provides details on how to migrate workloads, if needed, and what issues to be aware of.
    • Volume snapshot operations are now stable. This allows volume snapshots—images of the state of a storage volume—to be used in production. Kubernetes applications that depend on highly specific state, such as images of database files, will be easier to build and maintain with this feature active.
    • Kubectl Debug is now in beta, allowing common debug workflows to be conducted from within the kubectl command-line environment.
    • API Priority and Fairness (APF) is now enabled by default, although still in beta. Incoming requests to kube-apiserver can be sorted by priority levels, so that the administrator can specify which requests should be satisfied most immediately.
    • Process PID Limiting is now in general availability. This feature ensures that pods cannot exhaust the number of process IDs available on a Linux host, or interfere with other pods by using up too many processes.

    Kubernetes 1.17, released in December 2019, introduced the following key new features and revisions:

    To read this article in full, please click here

    Značky: #Kubernetes, #Rozne, #Containers

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      Using OPA for multicloud policy and process portability

      pubsub.slavino.sk / infoworldcom · Wednesday, 9 December, 2020 - 11:00 edit

    As multicloud strategies become fully mainstream, companies and dev teams are having to figure out how to create consistent approaches among cloud environments. Multicloud, itself, is ubiquitous: Among companies in the cloud, a full 93% have multicloud strategies—meaning they use more than one public cloud vendor like Amazon Web Services, Google Cloud Platform, or Microsoft Azure. Furthermore, 87% or those companies have a hybrid cloud strategy, mixing public cloud and on-premises cloud environments.

    The primary reason that companies move to the cloud at all is to improve the performance, availability, scalability, and cost-effectiveness of compute, storage, network, and database functions. Then, organizations adopt a multicloud strategy largely to avoid vendor lock-in.

    To read this article in full, please click here

    Značky: #Security, #Kubernetes, #Rozne

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      3 ways containers shine in a crisis

      pubsub.slavino.sk / infoworldcom · Monday, 23 November, 2020 - 11:00 edit

    There are certain people who thrive in a crisis. They have the ability to go beyond just getting the job done, no matter what is going on around them (which is huge in and of itself), but they also find opportunity amid difficult situations and help those around them be the best they can be. You want these crisis champions in (and leading) your organization.

    The same is true with technology. There is some technology that works well enough when things are calm but tends to buckle under pressure. Then there are the crisis champions of the technology world—the products that keep doing what they are supposed to be doing no matter what but are flexible and resilient enough to meet the most pressing new requirements (and then some). Linux containers and the Kubernetes ecosystem are prime examples.

    To read this article in full, please click here

    Značky: #Rozne, #Kubernetes, #Docker, #Containers

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      Red Hat Quarkus Java stack moves to OpenShift

      pubsub.slavino.sk / infoworldcom · Wednesday, 18 November, 2020 - 11:00 edit

    Red Hat’s Quarkus framework for building Kubernetes-native Java applications is now included with the company’s OpenShift 4.6 open source container application platform , a step Red Hat describes as important in bringing Java into modern cloud-native application development.

    To read this article in full, please click here

    Značky: #Java, #Rozne, #Kubernetes

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      How to Add or Remove Labels to Nodes in Kubernetes

      pubsub.slavino.sk / linuxhandbook.com · Wednesday, 7 October, 2020 - 06:17 edit

    Learn to add labels to nodes in Kubernetes, change the labels and remove those labels later.

    Značky: #Linux, #Kubernetes

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      kubectl apply vs create: Which One to Use for Creating Resources in Kubernetes Cluster Environment?

      pubsub.slavino.sk / linuxhandbook.com · Thursday, 1 October, 2020 - 05:03 edit

    Two different approaches for creating resources in Kubernetes cluster. What's the difference?

    Značky: #Kubernetes, #Linux

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      How to run Cassandra and Kubernetes together

      pubsub.slavino.sk / infoworldcom · Wednesday, 30 September, 2020 - 10:00 edit

    Containers have become increasingly popular for developers who want to deploy applications in the cloud. To manage these new applications, Kubernetes has become a de facto standard for container orchestration. Kubernetes enables developers to build distributed applications that automatically scale elastically, depending on demand.

    Kubernetes was developed to effortlessly deploy, scale, and manage stateless application workloads in production. When it comes to stateful, cloud-native data, there has been a need for the same ease of deployment and scale.

    To read this article in full, please click here

    Značky: #NoSQL, #Kubernetes, #Rozne, #Database