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April 17, 2020By Gethin Ge← Back to Blog

Introduce Microservice & Infrastructure on Cloud

This article will introduce Microservice & Infrastructure on Cloud.

Iaas & Paas & Saas

  • Infrastructure-as-a-service
  • Platform-as-a-service
  • Software-as-a-service

https://www.sherweb.com/blog/cloud-server/what-is-azure-paas/

source by Microsoft

source by Microsoft

Virtual Machine & Container

Virtual Machine: Traditional development & deployment，such as IIS & tomcat

Container:

  1. Platform independence: Build it once, run it anywhere
  2. Resource efficiency and density
  3. Effective isolation and resource sharing
  4. Speed: Start, create, replicate or destroy containers in seconds
  5. Immense and smooth scaling
  6. Operational simplicity
  7. Improved developer productivity and development pipeline
  8. Language independence

Docker & Kubernetes

Docker is the popular way which implement container. Other way ex. Azure Service Fabric, Amazon Elastic Container Service

Why use k8s:

  1. Container orchestration
  2. Great for multi-cloud adoption
  3. Deploy and update applications at scale for faster time-to-market (Horizontal auto scaling，Rolling updates，Canary deployments)
  4. Laying the foundation for cloud-native apps
  5. Lower infrastructure costs
  6. It can run on-premise or in a hybrid environment.
  7. You can move a Kubernetes cluster from one hosting vendor to another without changing (almost) any of the deployment and management processes.
  8. Zero-downtime deployments, fault tolerance, high availability, scaling, scheduling, and self-healing add significant value in Kubernetes.

Most Basic Architecture

  • Service Registration
  • Service Discovery
  • Monitoring
  • Traffic Limit
  • Routing
  • Load Balance
  • Timeout/Retry
  • Circuit Breaking (熔断)
  • Service Downgrade
  • Failover

Azure Kubernets Service -AKS

1. The First Stage

Build application as normal way - Introduce Cloud Native Information

Pod, Node, Replication Controller, Service, Namespace, Ingress, Gateway(Nginx)...

2. Use Third Party Components to Improve The System

  1. Helm,
  2. Traefik,
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  3. Kubeapps,
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  4. Prometheus,
  5. Grafana,
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3. Use Service Mesh (Istio) for Micro Service Management

  1. Gateway & Virtual Service
  2. Cert
  3. Kiali & Grafana
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  4. Use CI/CD to deploy your apps.

    1. Azure DevOps
    2. Scaling
    3. Intelligent Routing and Canary Releases
      https://docs.microsoft.com/en-us/azure/aks/servicemesh-istio-scenario-routing?pivots=client-operating-system-linux