system limiting the the number of application dependencies that you need to install on the OS. Virtualization The hypervisor virtualizes the hardware limiting the number of hardware dependences the network topology for the Namespace : a) Requests a new subnet from the pre- configured IP block in NSX b) Creates a logical switch c) Creates a T1 router and attaches it to the pre-configured

Master Meta Cache First Access LRU listStatus() 2. Alluxio缓存行为控制 参数 取值 含义 alluxio.user.ufs.block.read.location.policy LocalFirstAvoidEvictionPolicy Alluxio读取的数据块优先保存到本地，但是当本地空间不足时， 不会驱逐本地数据块而是将读取数据缓存到邻近节点 tieredstore.level0.watermark.high.rat io 0.99 后台驱逐任务启动条件，本例子中条件本地空间超过100 x 0.99=99GiB触发驱逐 alluxio.user.block.avoid.eviction.policy.reserved.size .bytes 1056MB 当本地节点的空间少于1056MB时，数据缓存的调度器不会选择该 节点；转而选择其他节点。

在单一系统的内核层通过一套 API 在应用层提供硬件及软 件环境隔离的 Linux 环境（containers 。在内核层，通过 cgroup 来提供硬件环境的隔离（例如 CPU，Memory， Block I/O，网络等等 和通过 namespace 来提供软件层面 的隔离（例如 process tree，网络，user IDs 和挂载的文件 系统 。 Container 框架 通过在 Kernel

Operator conveys readiness of application or managed resources to the user leveraging the status block of the Custom Resource Configuration of the workload • Operator provides configuration via the spec

creating/upgrading pod. 3. Number of Terminating Pod A number value indicates the count of pods that can not be deleted in a certain period. 5. Nodes Availability A number value indicates the number of unhealthy node Alert Gray Scale Bug Fix Success Rate SLO The unhealthy node Cluster Healthy Terminating Pod Number Daily Report Validation Housekeepi ng High Available Fast Recovery Display Board Alert Analysis

2015 2017 2018 Fintech Acquired three fintech companies in Indonesia 04 Milestone With great number of apps comes great headache a typical flow of an app in Go-Jek… Infrastructure as Code Started siloed within that team only. Centralized and Siloed • Instead of starting with onboarding small number of teams, we went with the whole organization. When issues happened, we did not have the bandwidth Kubeadm Improve Project X Focus on Kubernetes only Design better abstractions Work with small number of teams at a time • Setting up the whole Go-Viet infrastructure only took four days. Faster Setup

Job Spec activeDeadlineSeconds completions Pod Template Expected maximum number of parallel build tasks Expected number of completed build tasks The timeout of the running build tasks, default: 12 latter jobs if the previous job is still running successfulJobsHistoryLimit failedJobsHistoryLimit Number of successful/failed history jobs to keep v1.12 alpha Agenda • Our DevOps Expectations • Kubernetes

backend: service: name: mynginx-svc port: number: 1380 - host: "*.yyy.com" #支持*通配符域名，得放在双引号里 h�p: paths: #host下还可根据不同的url去转发到不同svc number: 2390 - path: /sta�cxx #转发到后端时也是带这个url的 pathType: Prefix backend: service: name: mynginx-svc port: number: 1380 backend: service: name: mynginx-svc port: number: 1380 # # kubectl apply -f myweb-ingress-tls.yml #应用 然后客户端就可使用h�ps://web.xxx.com:

connections parameters: - name: connections description: "The setting for worker connections" type: number default: 1024 required: false 2. A list of overwritable parameters (schemas) 1.Description of the connections parameters: - name: connections description: "The setting for worker connections" type: number default: 1024 required: false Overwritable parameters (schemas) list Reference a overwritable

count to what is needed to meet requirements • Don’t assign an odd number of vCPUs • Never compose a VM larger than the number of physical cores A NUMA aware hypervisor can have IO benefits too