Kubernetes is Google's Open source container cluster management system. It is built on Docker technology and provides a whole set of functions, such as resource scheduling, deployment operation, service discovery, expansion and contraction capacity, for containerized applications, which can be regarded as Mini-paas platform based on container technology. The purpose of this article is to comb the architecture, concepts, and basic workflows of kubernetes, and to describe how to use kubernetes by
[Commond]In addition, all command options can be used to obtain help for specific commands by executing--help.2. The Getget command is used to obtain one or more resource information for a cluster. Use--help to view more information. Kubectl's help information, examples are quite detailed and easy to understand. We recommend that you get used to the help information. Kubectl can list the details of all resource in the cluster. Resource includes cluster nodes, running
"Editor's words" kubernetes as the current mainstream container cluster management platform, the need for overall co-ordination of platform resource use, fair and reasonable allocation of resources to the relevant pod containers to use, and to ensure that the container life cycle has sufficient resources to ensure its operation. At the same time, due to the exclusive nature of resources, that is, resources have been allocated to a container, the same
One, podfile.lock file generates a Podfile.lock file after you start using Cocoapods and after you perform pod install. This file does not seem to have much to do with us, and it should never be overlooked. The file is used to save the version of the Pods dependent library that has been installed, and the reachability file content for the cocoapods after installing Sbjson, afnetworking, pods three Podfile.lock dependent libraries is:
PODS:
Use Cocoapods to create private podspec and cocoapodspodspecInitially
Third-party open-source libraries are inevitable for iOS project development. There are basically two reference methods:
Method 1: drag the file directly into the project.
Method 2: CocoaPods management.
We create a repository on Github or Coding, place our library code, and the directory structure becomes like this
When used, clone it and drag it into the project. Method 1Body
Method 2: import the database using
Outline:
? How to discover services in Kubernetes
? How to discover the services provided by pod
? How to use service discovery Services
? How to use the Kube-dns discovery service
? Kube-dns principle
? Composition
? Domain name format
? Configuration
Note: this share is based on the Kubernetes 1.2 version!Let's start with a simple example.1.How to discover services in KubernetesDiscover the services provided
Author: Peng Jingtian
The node nodes of Kubernetes are composed of Kubelet, Kube-proxy, flannel, dockerd four components, this paper mainly analyzes the functions and principles of kube-proxy components. Pod is the smallest unit of resource allocation in kubernetes and the smallest entity to perform tasks.
Each pod has a separate IP on the flannel overlay network. Pod
, cut, and paste operations in an application. Specific as follows:
UIPasteboardclass provides an interface to the pasteboard. A pasteboard is a protected area that is used for data sharing within an application or across applications. This class provides a way to read and write data items on the Clipboard.
UIMenuControllerclass to display an Edit menu on the top and bottom sides of the selected copy, Cut, and paste objects. Commands on the Edit menu can be copied, cut, pasted, sele
iOS Learning Note (2)-uiview User Incident ResponseUIView is responsible for responding to user events in addition to displaying content to users. This chapter focuses on the properties and methods associated with UIView user interaction. 1. Interaction-related properties userinteractionenabled Default is yes, and if set to no it does not respond to user events and removes the current control from the event queue. That is, the view that sets the Userinterfaceenabled property interrupts the
Master.NodeNode's job is to run the container app. node is managed by master and node is responsible for monitoring and reporting on the status of the container and managing the lifecycle of the container according to master's requirements. Node runs on the Linux operating system, either as a physical or virtual machine.In the previous interactive tutorial we created Cluster with only one host host01,It is both Master and Node.PodThe Pod is the small
this point, you run in the terminal again:
$ sudo gem install Cocoapods
Wait more than 10 seconds, cocoapods can be downloaded and installed locally, no more settings are needed.
To determine whether the cocoapods can be used, you can use the Cocoapods search function to verify. In the terminal, enter:
$ pod Search afnetworking
After a while (probably longer), you will see some red error messages in the terminal, as follows:
Setting up Cocoap
or down containers at any time
Groups containers and provides load balancing between containers.
It is easy to upgrade the new version of the application container
Container elasticity is provided. If the container fails, replace it.
3. Kubernetes terminology
Kubernetes terminology:
Master Node: The computer used to control Kubernetes nodes. All task assignments come from this.
Minion Node: The computer that executes requests and assigns tasks. The Kubernetes host controls the nodes.
Nam
Kubernetes is Google open source container choreographer, very suitable for the current hot micro-service architecture, in the Container choreography field, is gradually building a dominant position. This article mainly aims at the Kubernetes service to do some analysis, first briefly introduces the basic concept.
Basic concepts
The Pod:kubernetes minimum Dispatch unit is a set of containers that can be understood as a container.
Replication controller: Replica controller to ensure that the numb
features make it more comfortable for users to use an application because it allows people to experiment and interact without worrying about making mistakes.
Touchablehighlight and touchable*The response system may be complex to use. So we provide an abstract touchable implementation for something that should be "lightly clicked". This uses the answering system and makes it easy to identify the tap interaction in a declarative way. Use Touchablehighlight anywhere in the network where you w
I. Introduction ofKubernetesKubernetes is Google open source container cluster management system, based on Docker to build a container scheduling service, providing resource scheduling, balanced disaster recovery, service registration, dynamic expansion capacity and other functional suites, using Kubernetes can easily manage the cross-machine operation of containerized applications. and Kubernetes supports GCE, Vshpere, CoreOS, OpenShift, Azure and other platforms, and can also be deployed direc
Last night upgraded CocosPads1.0, just installed successfully, now the project inside the pod install found a few problems, yesterday toss too late. Let's go on with the toss today.Today I finally got the CocosPods1.0, including installation, running and an open source project Podfile 1.0 upgrades.When you run pod install, you find that there are 1.0 versions of Cocoapods, so you plan to upgrade.Cocoapods 1
practical example and talk about how to publish your own Pod for others to use. is a summary of the practice of Cocoapods.Because of the practical operation more, I made a demo for this article, submitted on my github:cocoapodsdemo, interested readers can download it, study the history of submission, or operate it yourself. Friendly reminder: This article is involved in the static library is the simulator production, do not run the real machine.Why t
.oracle.domain) (port=1522)))(Description= (address= (protocol=tcp) (Host=ocm1.oracle.domain) (port=1600)))Services Summary ...Service "POD" has 1 instance (s).Instance "POD", status ready, have 1 handler (s) for the This service ...Service "Pod1″has 1 instance (s).Instance "POD", status UNKNOWN, have 1 handler (s) for the This service ...Service "PODS" has 1 ins
OverviewThis article mainly analyzes the entire processing mechanism from the touch of our fingers to the Apple device to the final response event. Essentially, the entire process can be divided into two steps:Step 1: Find the target. Find the final recipient of the touch event in the iOS view hierarchy;Step 2: Incident response. Handle touch events based on the iOS responder chain (Responder Chain)looking
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