Kyle bai R&D @ inwinSTACK

www.inwinstack.com

Kubernetes Project Update and How To Contribute

JobR&D @ inwinSTACK

Description java objc Mobile Hadoop Spark Linux

OpenStackCeph Cloud Native

GitHub GitBook

Drink Coffee Mobile LoveGood! #7727 Buttocks

kairen(kyle.b@inwinstack.com)

https://kairen.github.io/

About MeKyle Bai

Kubernetes47%

Containers remain the top emerging technology of interest to users. Among those currently deploying container orchestration or platform services on OpenStack, 47% are using Kubernetes.

An introduction for Kubernetes

Major features in Kubernetes 1.7

What's new in Kubernetes 1.8?

How to contribute

AgendaToday I will talk about

An introduction for Kubernetes

KubernetesKubernetes Google (Container)

Google

Container(OCI)

K8s( )

CNCF

Stars

25,830+Commits

52,905+Contributors

1,331+

Kubernetes Pros

Monitoring

Rolling-update

High-availability

Self-healing

Cloud Provider

Persistent Volumes

Configmap

Secret

Kubernetes

Container Management Platforms Preferences

https://www.cncf.io/blog/2017/01/17/container-management-trends-kubernetes-moves-testing-production/

https://www.cncf.io/blog/2017/01/17/container-management-trends-kubernetes-moves-testing-production/

Kubernetes Adoption

Kubernetes 2017 Release Timeline

v1.6 v1.9v1.8v1.7

September(Q3)

December(Q4)

March(Q1)

June(Q2)

Major features in Kubernetes 1.7Security, Workloads and Extensibility.

https://github.com/kubernetes/features

https://github.com/kubernetes/features

API aggregation Beta API Server Server

API Server

API

API Kubernetes

https://github.com/kubernetes/sample-apiserver

https://github.com/kubernetes/sample-apiserver

API aggregation

API aggregation

Extensible External Admission Control API Server

Kubernetes

Alpha kube-apiserver --

admission-control GenericAdmissionWebhook

Limit node access to API server Node authorizer NodeRestriction Plugin

Node API

Node API Pod

Pod Secrets Configmaps

Custom Resource Definition TPR APICustom Resource

DefinitionsCRD

CRD TPR beta

1.8 TPR API TPR

CRD

Create custom objects for CRD CRD

CronTab resource

Encrypting secrets in etcd Etcd Secrets

Secret Etcd

Local persistent storage StorageClasses PVC/

PV Local persistent

storage

hostPath volume

Network Policy API NetworkPolicy API GA

NetworkPolicy Ingress Pods

https://ahmet.im/blog/kubernetes-network-policy/

https://ahmet.im/blog/kubernetes-network-policy/

Audit logs improvements API Server

Webhook

StatefulSet workloads StatefulSet Rolling updates Controller History

RollingUpdate Pod StatefulSet

Partitioned Pod

OnDelete Pod

DaemonSets workloads DaemonSet History Rolling back

PodTemplate DaemonSet History

Rolling back RollbackConfig

Deployment

Container Runtime Interface (CRI) RPC call

Metrics Container Runtime

Metrics

Kubelet Container Runtime Metrics

Containerd Kubelet Container Runtime

Pod HostAliases hostAliases hostname Pod-level /etc/hosts

Pod

$ kubectl logs hostaliases-pod# Kubernetes-managed hosts file.127.0.0.1 localhost::1 localhost ip6-localhost ip6-loopbackfe00::0 ip6-localnetfe00::0 ip6-mcastprefixfe00::1 ip6-allnodesfe00::2 ip6-allrouters10.244.135.10 hostaliases-pod127.0.0.1 foo.local127.0.0.1 bar.local10.1.2.3 foo.remote10.1.2.3 bar.remote

PodDisruptionBudget(PDB) Beta MaxUnavailable

Pod drain Pod

What's new in Kubernetes 1.8?

https://github.com/kubernetes/features

https://github.com/kubernetes/features

SIG in 1.8 release SIG Node:

CRI-O support Kubelet

SIG Network NetworkPolicy API Pod Egress

kube-proxy IPVS (alpha) iptables

userspace

SIG in 1.8 release SIG Storage Storage API resizing(alpha)

snapshotting(prototype) Ephemeral storage

requests & limits metrics driver

SIG Autoscaling HPA API(

Metrics) Cluster Autoscaler( GCE/

GKE)

SIG Instrumentation HPA API Resource

metrics APICustom metrics APIMetrics-server Default monitoring

pipeline( Heapster)

Kubernetes workloads API DaemonSetDeploymentReplicaSet StatefulSet kinds API Group

apps/v1beta2 GA

API batch/v2alpha1.CronJob

TPR batch/v2alpha1.ScheduledJobs autoscaling/v2alpha1

autoscaling/v2beta1

Annotation initContainer Pod spec initContainers

Advanced auditing v1alpha1 v1beta1 Advanced auditing

gate JSON encoding

Network Policy API CIDR NetworkPolicy

NetworkPolicy EgressRules

Custom Resource Definition CRD API CRD spec JSON schema

Garbage Collector CRD Aggregate API servers

Roles Based Access Control (RBAC) RBAC API Group v1beta1 v1RBAC v1alpha1 API

group

RBAC

RBAC

Scheduling Opaque Integer Resources (OIRs) v1.9

Extended Resources (ERs) OIRs Resource

kubernetes.io/ domain

pod.alpha.kubernetes.io/opaque-int-resource- prefix

Autoscaling Heapster metrics Resource

metrics API Metrics

--horizontal-pod-autoscaler-use-rest-clients

1.9

Storage iSCSI Fibre Channel RWO Attach/Detach

Kubernetes metrics API PV

Volume Plugin Metrics

API Volume resizing (Gluster)

Volume

Volume Snapshots

https://github.com/kubernetes-incubator/external-storage/tree/master/snapshot

CLI Changes kubectl rollout historystatusundo scale

StatefulSets

kubectl stop

kubectl run --env CSV parsing

Cluster Lifecycle kubeadm upgrade self-hosted

Kubernetes

kops bare metal(Alpha) GCE(Beta).

kubespray(incubator) kubeadm HA

Kubernetes Dashboard

Other Projects Dashboard zh-TW i18n Resource

test-infra e2e armarm64 ppc64le

(Kubernetes Core)

How to contribute

Kubernetes Community ContributionKubernetes

Bug

Bug

Special Interest Groups

https://github.com/kubernetes/community/blob/master/contributors/devel/community-expectations.md

https://github.com/kubernetes/communityhttps://github.com/kubernetes/community/blob/master/contributors/devel/community-expectations.md

Contribute Git workflow

Speed up PR merge PR merge

Commit Commit PR

PR

Coding ConventionsAPI

Conventions kubectl Conventions

k8s-ci-robot

https://github.com/kubernetes/community/blob/master/contributors/devel/coding-conventions.mdhttps://github.com/kubernetes/community/blob/master/contributors/devel/api-conventions.mdhttps://github.com/kubernetes/community/blob/master/contributors/devel/api-conventions.mdhttps://github.com/kubernetes/community/blob/master/contributors/devel/kubectl-conventions.md

https://github.com/kubernetes/dashboard/pull/2309

Kubernetes (Kubernetes Certified Service Provider) 2:50