Shulou(Shulou.com)06/02 Report--

Author | Chen Jie, Gao Xianglin

Industry News Kubernetes document adds Anti-racial Discrimination statement

All Kubernetes-related documents are uniformly added with the anti-racial discrimination statement Header to express the community's firm opposition to racial discrimination. In addition, golang/kubernetes has replaced keywords such as whitelist/blacklist,master/slave in the code.

K8s 1.19.0-beta.1 will code freeze

Kubernetes 1.19.0-beta.1 will code freeze on June 25 and begin release and testing.

Linkerd 2.8officially released

Linkerd 2.8adds support for multi-cluster capabilities to establish connections across multiple Kubernetes clusters and to provide secure, transparent, and service independent of network topology.

Important upstream progress CertificateSigningRequest v1 API

Added support for CertificateSigningRequest v1 API, including controller, client-go, kubectl, etc. At the same time, compared with CertificateSigningRequest v1beta1 CertificateSigningRequest v1, there are adjustments in spec.signerName, spec.usages, status.conditions and other fields.

Support kubectl create deployment with replicas

Kubectl/client-go supports displaying / returning alarms on the server side.

Remove log message causing significant overhead on Preemption evaluation

Generic scheduler removes some of the log output and optimizes the performance of the preemption evaluation process.

Kubelet: block non-forwarded packets from crossing the localhost boundary

Kubelet: add iptables rules, drop non-local packets in localnet.

Promote RotateKubeletClientCertificate to GA

The RotateKubeletClientCertificate function is upgraded to GA, and the RotateKubeletClientCertificate parameter in feature-gate will be deleted in version 1.20.

Standard for communicating a local registry

Set a unified local image repository standard for local clusters such as Kind, K3D, Minikube and Microk8s.

Push down RangeOptions.limit argv into index tree to reduce memory overhead

Mvcc: pass the RangeOptions.limit parameter to the downward index tree to reduce the memory overhead during range.

Reduce count-only range overhead

Mvcc: memory overhead when optimizing range count queries.

Xlskubectl is recommended for open source projects

Use the Excel table to control your kubernetes cluster.

K8s-image-availability-exporter

A prometheus exporter that checks the state of the mirror defined in kubernetes objects.

CRIU

A checkpoint system tool that allows you to dump all process data structures and status information (process tree, FD, VMA, etc.) to the file system and support the recovery of processes from the file system.

Read the recommended "When it's not only about Kubernetes CVE" this week.

This paper introduces that the author found a loophole in Kubernetes and carried out a series of analysis and research, and finally submitted a process of CVE.

"Beda, Burns and Mcluckie: the Creators of Kubernetes Look Back"

This article mainly introduces the early developers of Kubernetes's review of the birth of Kubernetes.

"Multi-cluster Kubernetes with Ambassador and Linkerd"

This paper introduces how to realize the cross-cluster communication ability and the cross-level group management of services with Ambassador Edge Stack in Linkerd 2.8.This paper introduces how to realize the cross-cluster communication ability and the cross-level group management of services.

"Monitoring Kubernetes with Prometheus, the most practical deployment method"

In the past few years, cloud computing has become one of the hottest technologies in distributed computing, in which the development of open source software such as Docker, Kubernetes, Prometheus has greatly promoted the development of cloud computing. Through this article, we can learn and build a perfect Prometheus monitoring system on the basis of Kubernetes cluster.

Course recommendation

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