Best Practices on ACK (Kubernetes)

By Kidd Ip

Introduction

This article explains the best practices of Alibaba Cloud Container Service for Kubernetes (ACK).

Alibaba Cloud offers a Container Service for Kubernetes (ACK), which integrates virtualization, storage, networking, and security capabilities. It allows users to deploy applications in high-performance and scalable containers and provides full lifecycle management of enterprise-class containerized applications.

Some people call Kubernetes K8s. The definition is listed below:

Sometimes, Kubernetes is shortened to K8s, with 8 representing the number of letters between the K and the s. Kubernetes is an open-source system that can deploy, scale, and manage containerized applications anywhere in Alibaba Cloud, which also offers a managed K8s service!

Even though we can gain quite a lot of benefits from managed services, some areas would still suggest in view of best practices:

1. The Latest Version of ACK

This is an end-user responsibility, even managed service, Alibaba Cloud offered a certified version of ACK but needs to take care of version upgrades.

2. Config Files Version Handling

Config files (such as deployment, service, and ingress controller) are the KEY for change management and rollback purposes.

3. Think about YAML Files

YAML file is a good approach that allows store and version of all objects with the code in view of rollback. We only need to reapply the YAML file. Besides, it can be across multi-CSP as a multi-cloud strategy.

4. A Workflow to Go

It¡¯s time to design a proper workflow or tools to optimize the deployments, error tracking, and CI/CD process/

5. Define what you want on resource, even network (e.g. IP subnet)

6. Clearly Label on Resource

This is important in view of resource management, cost management, and whether we need to charge back or not.

7. Namespaces to Simplify Management

Namespaces handle the ACK cluster logically and enable the team to work within the same cluster simultaneously.

8. Think about Stateless

In general, stateless apps are the most popular apps we need to research.

9. Role-Based Access Control (RBAC) Consideration as Best Practice

10. Network Policy Control

11. Kubernetes to Protect by Firewall

12. Auto scaling ¨C Scale up or Scale out Consideration

13. Small Images should always be good and ideal.

14. Take good care of the Kubernetes cluster, which is the control plane.

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Best Practices on ACK (Kubernetes)

Introduction

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