It is used heavily by Kubernetes to track the state and manage the resources associated with the cluster. etcd – etcd is a distributed key-value datastore.All of these services are deployed as pods within Kubernetes. Some of these services, such as etcd and DNS, are mandatory for the cluster to be functional, while other services are optional. Depending on the service type, each service is deployed on only one type of node (master or compute) or on a mixture of node types.
The cluster has a number of Kubernetes intrinsic services which are deployed in the cluster. Compute nodes – Nodes which are responsible for executing workloads for the cluster users.
Typically, these nodes are not used to schedule application workloads. Master nodes – These nodes host the control plane aspects of the cluster and are responsible for, among other things, the API endpoint which the users interact with and provide scheduling for pods across resources.Storage for Kubernetes Infrastructure ServicesĪ Kubernetes cluster typically consists of two types of nodes, each responsible for different aspects of functionality: Red Hat OpenShift infrastructure architecture Kubernetes Cluster Architecture and Considerations NetApp Products and Integrations with Kubernetes "IBM sees great value in the open ecosystem Crossplane has enabled by extending the Kubernetes control plane to manage external resources and on the power of custom compositions for building developer-friendly resource abstractions. "Crossplane provides an open and extensible approach to building providers for different clouds," the CNCF quoted Paolo Dettori, senior technical staff member of IBM research, as saying.
#Controlplane kubernetes code#
More than 100 different companies have now contributed code to Crossplane!"Ĭontributors are vital for such projects, of course, and Crossplane said it was excited about non-trivial feature contributions from the greater community, indicating a more serious adoption and commitment from community developers.Ĭrossplane is already out in maintained versions for production use, debuting in version 1.2 in April and advancing to v1.4 last month, and is being used by many organizations. Other metrics have seen greater relative increases, such as container downloads (13x), Slack members (4x), and contributors (3x). "Many stats have increased by at least 50 percent in the last 9 months since being accepted into Sandbox, such as the number of GitHub stars (~2,000 to 3,680+) and commits to the project (~2,000 to 3,430+). "We've seen impressive growth in the community statistics, indicating greater adoption and a growing ecosystem of people getting involved with the project," Crossplane said in its own post this week. The company Upbound created the project in 2018 and it was accepted as a Sandbox project by the CNCF before being accepted as an Incubating project.
Crossplane Composition (source: Crossplane). It works with all the big cloud platforms, AWS, Microsoft Azure, Google Cloud, Alibaba Cloud and so on. It provides Kubernetes CRDs (custom resource definitions) for any infrastructure or managed service, which can be composed into higher-level abstractions that can be versioned, managed, deployed and consumed with existing Kubernetes cluster-integrated tools and processes. In effect, the open source project extends the Kubernetes API in order to manage and compose infrastructure. Crossplane effectively enables platform teams to quickly put together their own opinionated platform declaratively without having to write any code, and offer it to their application teams as a self-service Kubernetes-style declarative API." Specifically, it "enables platform teams to assemble infrastructure from multiple vendors, and expose higher level self-service APIs for application teams to consume. The Crossplane web site says it's used to compose cloud infrastructure and services into custom platform APIs. The Cloud Native Computing Foundation (CNCF) is now incubating Crossplane, an open source project providing a Kubernetes add-on that acts as a universal control plane with which enterprises can consume infrastructure.
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