What methods can be used to manage network interactions within Kubernetes clusters?
sobes.tech AI
Answer from AI
In Kubernetes, network interaction within the cluster is managed by several methods:
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CNI plugins (Container Network Interface) — provide pod networking connectivity. Popular plugins include Calico, Flannel, Weave Net. They implement routing, isolation, and security policies.
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Network Policies — allow setting rules about who and how can communicate with pods. For example, allowing traffic only from certain namespaces or IPs.
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Service — an abstraction for accessing a group of pods via a stable IP and DNS within the cluster.
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Ingress — manages external access to services but can also be used for internal routing.
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DNS (CoreDNS) — provides name resolution for services and pods within the cluster.
Thus, managing network interaction involves choosing CNI, configuring security policies, and using services for traffic routing.