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Showing results for tags 'etcd'.
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Kubernetes has two base node roles: supervisors and workers. A cluster may have additional roles derived from the “worker” role based on their unique infrastructure characteristics (e.g., type of CPU, NICs, GPUs, FPGAs, etc.) or the applications they run (e.g., infrastructure services, developers, development team, etc.). The supervisor nodes comprise the Kubernetes control plane, which hosts components that make cluster-level decisions. These include scheduling, responding to nodes' events, storing artifacts of all cluster-level objects from application manifests and ServiceAccounts definitions to Secrets and extensions to Kubernetes APIs in the form of CustomResourceDefinitions, and much more. View the full article
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The kubeadm tool now supports etcd learner mode, which allows you to enhance the resilience and stability of your Kubernetes clusters by leveraging the learner mode feature introduced in etcd version 3.4. This guide will walk you through using etcd learner mode with kubeadm. By default, kubeadm runs a local etcd instance on each control plane node. In v1.27, kubeadm introduced a new feature gate EtcdLearnerMode. With this feature gate enabled, when joining a new control plane node, a new etcd member will be created as a learner and promoted to a voting member only after the etcd data are fully aligned... View the full article
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