Types of deployment strategies The following are six types of deployment strategies: Recreate Rolling Blue/green Canary A/B testing Shadow You can use either a single deployment strategy or a combination of multiple deployment strategies. Recreate strategy In the recreate strategy, Pods runn...
.spec.strategy.type==Recreate时,在创建出新的Pod之前会先杀掉所有已存在的Pod。 Rolling Update Deployment .spec.strategy.type==RollingUpdate时,Deployment使用rolling update 的方式更新Pod 。你可以指定maxUnavailable 和maxSurge 来控制 rolling update 进程。 Max Unavailable .spec.strategy.rollingUpdate.maxUnavaila...
Before you implement a Kubernetes deployment strategy, you’ll need to understand the pieces of a Kubernetes deployment and how they all function together.What’s in a Kubernetes deployment YAML file The desired state for your Kubernetes cluster—the configuration of Pods—that you describe, whic...
此前一直演示的是deployment管理的应用,比如nginx或者我们自己定义的myapp它们都属于无状态应用。 2、而对于有状态应用,比如redis,mysql,还有etcd,还有zookeeper等等需要存数据的都属于有状态。它们不光有所谓的节点之分,每一个对应的pod还有角色之分,有的是主节点,有的是从节点。而后,从节点不光有所谓的从之分可能...
Deployment实现了Pod 的“水平扩展 / 收缩”(horizontal scaling out/in),适合部署无状态的应用服务,用来管理pod和replicaset,具有上线部署、副本设定、滚动更新、回滚等功能,还可提供声明式更新,例如只更新一个新的Image。 Deployment如何控制pod 这些控制器被统一放在 kubernetes/pkg/controller 目录下,因为它们都遵循 ...
Kubernetes Deployement Strategy Type of deployment Recreate RollingUpdate .spec.strategy specifies the strategy used to replace old Pods by new ones. .spec.strategy.type can be “Recreate” or “RollingUpdate”. “RollingUpdate” is the default value ...
我们部署一个应用一般不直接写Pod,而是部署一个Deployment Deploy编写规约Deployments | Kubernetes 二、Deployment创建 基本格式 .metadata.name指定deploy名字 replicas指定副本数量 selector指定匹配的Pod模板。 template声明一个Pod模板 编写一个Deployment的yaml 赋予Pod自愈和故障转移能力 ...
如图,k8s根据yaml中指定的spec.replicas值为我们创建3个pod,并在deployment整个运行周期中维护这个数量,然后根据spec.template.spec中的container数组配置,将容器组启动在每个pod中。 这是一个简单创建deployment任务过程。 2 更新及回滚 Deployment作为一个大数据结构(yaml文件)控制维护我们的业务,我们通过更新这个yaml文件...
strategy - Strategy string. Optional. Use when action = deploy || action = promote || action = reject. Allowed values: canary, none. Default value: none. Specifies the deployment strategy used in the deploy action before a promote action or reject action. Currently, canary is the only accep...
Deploymentmetadata:name:corednsnamespace:kube-systemlabels:k8s-app:kube-dns kubernetes.io/name:"CoreDNS"spec:# replicas:not specified here:#1.Default is1.#2.Will be tunedinreal timeifDNShorizontal auto-scaling is turned on.strategy:type:RollingUpdaterollingUpdate:maxUnavailable:1selector:matchLabels:...