Ø What are the advantages of batch gray release ? • more reliable and better control • More flexible • More efficient StatefulSetPlus StatefulSetPlus Service (Kube-proxy, CLB, etc.) 0 n-1 … StatefulSetPlus Operator Ø Keep share memory during Pod upgrade Ø Upgrade jitter (a few ms) for keep-alive services Flexible and dynamic resource management Dynamic Scheduler is to solve the problem of unbalanced node

③k8s集群初始化 # kubeadm version #先查看k8s版本 # GitVersion:"v1.19.4" # kubeadm config images list #查看k8s其他组件的docker镜像名，默认用 k8s.gcr.io/的镜像源地址 k8s.gcr.io/kube-apiserver:v1.19.4 k8s.gcr. KubeletConfigura�on cgroupDriver: systemd failSwapOn: False #保存，（修改蓝色字体的参数值及新增最后5行） # kubeadm config images list --config /etc/kubeadm-init.yaml #查看需要的镜 像 cof-lee.com:5443/k8s/kube-apiserver:v1 cof-lee.com:5443/k8s/etcd:3.4.13-0 #可见镜像名已由默认的k8s.gcr.io/换成了配置文件里指定的docker镜像源 # kubeadm config images pull --image-repository="cof-lee.com:5443/k8s" #提前 下载需要的镜像 # kubeadm init --config /etc/kubeadm-init

Dockerfile best practices github.com/GoogleContainerTools/jib docs.docker.com/develop/develop-images/dockerfile_best-practices github.com/GoogleContainerTools/jib ** !target/petclinic-*.jar .dockerignore faster builds Smaller images github.com/GoogleContainerTools/jib Possibilities for a container “compiler” Smart inferences Container optimizations Even faster builds Smaller images Tools for running a container “compiler” Smart inferences Container optimizations Even faster builds Smaller images Tools for running the container Java Development on Kubernetes Skaffold + Jib Continuous development

• CustomResourceDefinition (CRD) • Built on Kubernetes APIs • Kubernetes repo support • Agile, flexible and convenient Node-Operator: Overview • User: SREs who can scale & offline Nodes through posting

enhancements © 2017 Rancher Labs, Inc. CustomResourceDefinition(CRD) • What CRD provides • Very flexible way to extend managed resource into a current Kubernetes cluster • Auto-generated API in Kubernetes

Service • Zero server ops – No provisioning, updating, and managing server infrastructure. – Flexible Scalability • No compute cost when idle Benefits Serverless landscape defined in CNCF

Virtlet Virtlet is a Kubernetes runtime server which allows you to run VM workloads, based on QCOW2 images. https://github.com/Mirantis/virtlet Virtlet compares with other CRI Virtlet Architecture Daemonset controller • much bigger codebase RancherVM https://github.com/rancher/vm Package and run KVM images as Kubernetes pods, run at scale. RancherVM Architecture RancherVM Networking Container Security

25000 30000 35000 40000 P100 (1GPU) P100 (32GPU) V100 (8GPU) V100 (32GPU) RestNet50 模型训练速度（images/second） 分布式训练/GPU硬件升级加速明显 模拟数据训练时间 108 15.12 4.62 3.39 1 0 20 40 60 80 100 120 P100 (1GPU) 单机缓存无法满足海量数据加速 9993.6 3189.6 0 2000 4000 6000 8000 10000 12000 Synthetic ESSD云盘 PL2 RestNet50 模型训练速度 （images/second） 云盘 Alluxio - 分布式缓存的领导者 开源项目由李浩源博士(Alluxio公司CEO)在加州大学Berkeley分校 AMPLab就读期间创立 2013 2015

nodes vCenter openstack Extensibility / Integration • Easy to extend task template, just docker images • Use can define raw k8s job, more features can be enabled • Leverage all k8s resources and extensibility dockerfile using ConfigMap Job - pod template - volumes user build task • build the docker images init task • prepare code repository - volumes DevOps Operator Manage the Job environment variables

minimal streamlined container images in multiple flavors. Why? In designing the architecture and the DevSecOps pipeline estate, having a variety of container images would sup- port multiple specific