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Kubernetes Overview in Vietnix Cloud

Kubernetes (K8s) is an open-source platform designed to automate deploying, scaling, and managing containerized applications. It allows developers and DevOps teams to focus on writing applications without worrying about the underlying infrastructure.

Kubernetes is widely used because it provides:

  • Scalability: Automatically scale applications up or down based on demand.
  • High Availability: Keep applications running even if some nodes fail.
  • Portability: Run applications consistently across on-premises and cloud environments.
  • Resource Efficiency: Optimize CPU, memory, and storage usage across nodes.

Why Use Kubernetes?​

  1. Simplified Application Management: K8s abstracts the complexity of managing multiple containers across many servers.
  2. Resilience: Ensures your applications stay online and recover automatically from failures.
  3. Automation: Deploy, update, and rollback applications without downtime.
  4. Extensibility: Integrates with monitoring, logging, CI/CD pipelines, and cloud-native tools.

Basic Kubernetes Architecture​

A Kubernetes cluster consists of two main components:

1. Control Plane (Master Nodes)​

  • API Server: Handles communication between users, CLI, and the cluster.
  • Scheduler: Assigns workloads (Pods) to nodes based on available resources.
  • Controller Manager: Maintains cluster state (replicas, scaling, and nodes).
  • etcd: A key-value store that saves cluster configuration and state.

2. Worker Nodes​

  • Run Pods, which are the smallest deployable units containing one or more containers.
  • Include Kubelet, which communicates with the master to run and manage Pods.
  • Include Container Runtime (e.g., Docker, containerd) to run container images.
  • Include Kube-Proxy to manage networking and load balancing for services.

3. Key Kubernetes Objects​

  • Pod: Smallest deployable unit, can contain one or more containers.
  • Deployment: Manages replica sets and rolling updates.
  • Service: Provides stable networking and load balancing to Pods.
  • Namespace: Logical partition to organize resources within a cluster.

In Vietnix Cloud, our Kubernetes service allows you to create highly available clusters with 3 master nodes, scale worker nodes dynamically, and manage workloads via an intuitive dashboard. Combined with our professional support, Vietnix Cloud makes it easier to adopt Kubernetes for both development and production environments.