Apache OpenWhisk + Kubernetes: A Perfect Match for Your Serverless Platform Ying Chun Guo guoyingc@cn.ibm.com Zhou Xing xingzhou@qiyi.com Agenda • What is serverless? • Kubernetes + Apache

developers: • The Golang programming patterns of Kubernetes (Controller, codegen etc) • Write your own Controller • gPRC based interface design in Kubernetes (CRI as example) • For Kubernetes := getDesiredState() current := getCurrentState() makeChanges(desired, current) } • Write your own controller! Why DIY? Container Pod Deployment I need co-scheduling I have many Pod replicas fields • go-to-protobuf: generate protobuf messages for your types • informer-gen: generate informers that can be used to watch for updates to your types • openapi-gen: generate openapi compatible API

server • Customized resource controller to implement your business logic of managed resource • Natural Kubernetes experience for operating your own resource with Kubernetes RBAC and authentication Example of CRD and Resource Item my-crontab.yaml © 2017 Rancher Labs, Inc. How Does The Controller Work ETCD API Server Kubernetes Core controllers added creating running stoped deleted Resource Labs, Inc. API Aggregation • What API aggregation provides • Extended with additional APIs • Build your own API server • Requirements of aggregation layer • Running Kubernetes 1.7 Cluster • Enable apiserver

can define rules based on node labels, or based on placement of other pods constrain which nodes your pod is eligible to be scheduled on based on labels on the node • Some labels are automatically If the zones in your cluster have uneven available resources due to node variations or unevenly distributed pre-existing workloads, this might prevent perfectly even spreading of your pods across zones Cloud Provider should support implement Zones() interface #64021 vSphere Cloud Provider does not work when deployed across Zones with zone-local Storage #67703 24 Configuring VM affinity rules Quorum

guestbook tier: frontend spec: # this replicas value is default # modify it according to your case replicas: 3 selector: # 下⾯的是equality-based selector requirement matchLabels: memory: 100Mi env: - name: GET_HOSTS_FROM value: dns # If your cluster config does not include a dns service, then to # instead access environment variables nodes --show-labels 并检查Node是否已经有你所设的标签标签，来验证Label是否成 功添加。 Step Two: Add a nodeSelector field to your pod configuration（将 nodeSelector字段添加到您的Pod配置） 在任意⼀个你想运⾏的Pod的配置⽂件中添加nodeSelector部分，如下所示。例如，如果我的Pod配置如下：

Non-Technical Issues • We're not saying that centralized effort is bad when creating initiative to migrate your organization to Kubernetes. In our experience, with only one team working on it, the knowledge becomes have the bandwidth to work on all of them at once. Start with a Bang! Multiple Approaches Kubeadm Improve Project X Focus on Kubernetes only Design better abstractions Work with small number of

the SIG VMware introduction session to learn our mission, recent accomplishments and discuss future work. We will also focus on how new contributors can get involved in the SIG. Kubernetes is in the process Storage Interface (CSI) is a standard API allowing a storage provider to write just one plugin that will work for all major container orchestration systems: Kubernetes, Mesos, Docker and Cloud Foundry. Cluster it easy to run Kubernetes locally. Minikube runs a single-node Kubernetes cluster inside a VM on your laptop for users looking to try out Kubernetes or develop with it day-to-day. 7 Out of tree components

com/kubernetes/dashboard/issues /3256#issuecomment-437199403 UIs help you understand what’s going on with your cluster, fast. Dashboard UI & kubectl Dashboard Strengths: ● Providing an overview ● Monitoring resource creation ● ...and much much more. github.com/kubernetes/dashboard/releases In-progress work ● Migrating from ng1 to ng2 (#3152) ● Migrating metrics from Heapster to Kubernetes Metrics API to use it tomorrow? https://unsplash.com/ About the survey 163 Responses How would you rate your knowledge of Kubernetes? 您如何评价您对于Kubernetes的了解程度？ https://github.com/kubernetes/dashboard/issues

Healing AWS, GCP API node2 node3 node1’ Install Config Problems A lot of manual/semi-manual work No standard way to approach all the problems do it wrong, lose the cluster! gcc // gcc source code kube-controller-manager.yaml $ kubectl apply -f kube-proxy.yaml Simplify k8s lifecycle management Manage your cluster with only kubectl Upgrading a self-hosted Kubernetes cluster: Launching a self-hosted cluster

Node Components reliably • Canary Rollout • Master & Node Component Versions Management Motivation: Work Order Deployment Worker Order • Upgrade Nodes Versions • Upgrade Node 10.10.10.1 • Upgrade docker Upgrade docker • Upgrade kubelet …. Motivation: Work Order Deployment Disadvantages • Inconsistency • Non-failure-aware • Complicated architecture Work order deployment system can not meet the requirements manage Biz-Cluster master components through Kubernetes resource, such as Deployment, Pod, etc. Work Together Achievement • Anyone can operate and maintenance Kubernetes Cluster • Set up & tear