Shulou(Shulou.com)06/03 Report--

Author: Xingui, Jinchao, Yuan Yi, Xinshui, Zhongyuan, washing soldiers

Industry news Kubernetes v1.16 release

In this release, the values of * * and Feature:

CRD has officially entered the GA stage, Admission Webhook has officially entered the GA stage, and a series of enhancements and repairs to CSI and Volume. Ant Financial Services Group Open Source ElasticDL Project

On September 11, Ant Financial Services Group launched the open source ElasticDL project at the Shanghai Station of the 2019 Google developer Conference, which is the industry's first open source system for elastic deep learning based on TensorFlow. ElasticDL implements distributed deep learning with fault tolerance and flexible scheduling, which can greatly improve the overall utilization of the cluster and significantly reduce the time for users to wait for jobs to start after submitting jobs (pending time).

Oracle announces permanent free part of cloud computing service

Oracle CEO Larry Ellison announced the launch of Oracle Cloud Free Tier at the OpenWorld conference, enabling companies and organizations, developers, students, and educators to build, learn, and explore the full capabilities of Oracle autonomous databases and Oracle cloud infrastructure.

The Oracle Cloud Free Tier (free package) launched this time has two components, namely, the free trial program and the permanent free cloud service.

Important upstream progress Kubernetes project fixes the imbalance in API Server access Webhook traffic.

In clusters with large cluster size or high QPS, it is recommended to fix Port to avoid performance bottlenecks caused by Webhook single point work: https://github.com/kubernetes/kubernetes/pull/82090

Fix Bug caused by Pod toleration.

Fix the Bug of comparison & merging when there is more than one Pod toleration. The fix of Port is recommended to improve the semantic robustness of scheduling Pod: https://github.com/kubernetes/kubernetes/pull/81732/files

KEP: reduces the cost of API Server for Watch event serialization.

At present, in API Server under a large-scale cluster, too many CPU time slices and resources are used for serialization and deserialization. In order to further improve cluster performance and throughput, we should find ways to optimize serialization and deserialization. Https://github.com/kubernetes/enhancements/blob/master/keps/sig-api-machinery/20190329-less-object-serializations.md

The Knative project discusses Knative release principles and sets the minimum K8s support version; only the last 4 Knative versions are supported; after being declared obsolete, the knative beta api version supports at least 9 months and the GA version supports at least 12 months. For v1alpha1 as the beta version; Runtime and API need to pass the compatibility test of the last four versions. Dead-Letter Channel Design

The design for the Dead letter queue is expected to be released in Eventing v0.10.0.

Update on Performance Task Force

Eventing performance test, conducted a baseline test of throughput, that is, do not use data metrics under broker or channel. The next step is to conduct a throughput test based on broker or channel.

Eng-practices is recommended for open source projects

Google guidance document on codeview. We have heard about Google's good codeview culture for a long time. As engineers, we should all learn codeview culture to achieve better cooperation with colleagues. (Chinese version reference: https://jimmysong.io/eng-practices/)

Argo-cd

Argo-cd, a Kuberntetes-based gitops CI/CD system with a great user experience.

ElasticDL

Ant Financial Services Group open source flexible distributed deep learning system ElasticDL based on TensorFlow.

Read this week to recommend "aggressive Java-the original metamorphosis of the Cloud"

With the advent of the cloud native era, what does it have to do with Java developers? Some people say that cloud origin does not exist for Java at all. However, the author of this article believes that in the era of cloud origin, Java can still play the role of "giant". The author hopes to broaden the students' horizons and provide useful thinking through a series of experiments.

"what's the difference between PaaS and KaaS? When is it important? "

PaaS and KaaS provide many similar functions, so it's easy to confuse the platform as a service with Kubernetes as a service system, but they are essentially different, which can have a serious impact if you choose the wrong option. In this webinar, Mirantis's Nick Chase explains the difference between the two and how to choose a better approach for your particular use case.

A complete Guide to Kubernetes Authentication and Authorization Operations: Service Account for access Control

Explore service account in access control in depth.

"behind the continued rise of Kubernetes: security issues remain, Life cycle is in doubt"

In order to better understand the security and adoption trends of containers and Kubernetes, this paper integrates the survey results of nearly 400 members from the security, DevOps and product teams, hoping to understand how various organizations adopt container technology, the security issues they are currently facing, and their specific insights into further development.

"customize application metrics using Django,Prometheus, and Kubernetes"

This paper emphasizes the importance of customizing metrics for applications, and demonstrates how to design metrics and integrate Prometheus into Django projects with code examples, which provides a reference for developers who use Django to build applications.

"Building a Kubernetes cluster-- Select the number and size of work nodes"

This paper expounds the advantages and disadvantages of using fewer large nodes and more small nodes to build Kubernetes cluster from multiple dimensions, and gives a general method to select the number and size of work nodes.

Alibaba Cloud Native Wechat official account (ID:Alicloudnative) focuses on micro-services, Serverless, containers, Service Mesh and other technology areas, focuses on cloud native popular technology trends, and large-scale cloud native landing practices, so as to be the technical official account that best understands cloud native developers.

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