first, the core concept
1, Node
node as a working node in a cluster, running a real application, the smallest unit of Kubernetes managed on node is pod. Node runs kubernetes kubelet, Kube-proxy service processes that are responsible for pod creation, start-up, monitoring, restart, destruction, and load balancing of software patterns.
Node contains information: node address: The IP address of the host, or
Haven't written a blog for a long time, the company engaged in a period of 997 is too brutal. 997 End also fast 1 weeks, finally slow down a bit, first two easy article, and then a little work, write a Kubernetes series. This article mainly introduces the kubernetes related commands, for the initial contact Kubernetes reference.Kubernetes through the kube-apiserv
Pokemon per second processing of Go cloud data storage (expected vs Actual)
This can happen, and you should be prepared for it as well. This is also the article in this series to mention. In this series of tutorials we'll show you what you need to track, why you're tracking them, and what you need to do to deal with possible root causes.
We'll show you each indicator, how to track it, and what you can do to take action. We will use different tools to collect and analyze this data.
For those who are interested in this offline event, please click here to sign up for a free ticket.In March this year, Docker had just finished its 5 birthday, and for five years, Docker had gradually matured in technology and practice, and embraced kubernetes at the end of last year.May 19, NetEase Cloud will co-host Docker Meetup, invite industry Docker deep practice enterprise, share in container, micro-service and
Previous Chapters Kubernetes All operations we are using command line tools kubectl completed. To provide a richer user experience, Kubernetes also developed a WEB-based Dashboard that enables users to deploy containerized applications with Kubernetes Dashboard, monitor the status of applications, perform troubleshooting tasks, and manage
Describes how to install kubernetes offline, mainly for the study of Kubernetes, not recommended in production environment , install package get address:Link: Https://pan.baidu.com/s/1nX5_memy8TKrnw1auOsB8Q Password: ZSW7Operating Environment
Name
Operating system
Configuration
Ip
Master
CentOS 7
4 Core 2G Memory
192.168.132.130
Nod
Tags: composition instance provider application Application class version style implementationThe lifespan of kubernetes pods is limited and they are not resurrected, so although each pod has its own IP address, these IP addresses are unreliable and disappear as the pod dies. This poses a problem, if some of the pod's collections (called backends) are other pods of the cluster (called frontends), how do these frontends find and always know which backe
Learning notes TF064: TensorFlow Kubernetes, tf064tensorflow
AlphaGo: each experiment has 1000 nodes and each node has 4 GPUs and 4000 GPUs. Siri: 2 nodes and 8 GPUs for each experiment. AI research relies on massive data computing, instead of performance computing resources. The larger cluster running model shortens the weekly training time to the day-level hour level. Kubernetes, the most widely used cont
The bottom of the Kubernetes node is supported by a software called a "container runtime," which is responsible for things like starting and stopping containers. The most well-known container runtime is Docker, but it is not unique. In fact, this field has developed rapidly in the container runtime. To make the expansion of kubernetes easier, we have been polishing the k8s plug-in API that supports containe
After the initial completion of the Kubernetes cluster architecture, by building some monitoring components, we have been able to achieve
Graphical monitoring of status information and resource conditions for each node,pod
Scaling and scaling of replicateset through scale
View the run log for each pod by kubectl logs or dashboard
However, the scale of the nodes in the distributed architecture is often very large, a typical produc
Service account for Kubernetes
Service Account RoleThe service account is designed to facilitate the process within the pod to invoke the Kubernetes API or other external services.
Service Account Usage ScenariosProcesses running in the pod need to invoke the Kubernetes API and other services of the non-Kubernetes
[TOC]DescriptionThere is no detailed explanation of the Kubernetes's service exposure and Traefik's principles. The Traefik principle can be consulted in the official documentation: https://docs.traefik.io/, This document can also be consulted about the service exposure of kubernetes and the rationale for using Traefik as a kubernetes ingress: https://mritd.me/2016/12/06/ Try-traefik-on-
Reference Address: Https://github.com/gjmzj/kubeasz
IntroductionProvides tools for quickly deploying highly available k8s clusters, deploying in binary mode and automating with Ansible-playbook, providing a one-click installation script or stepping through the installation of individual components while explaining the main parameter configurations and considerations for each step.CharacteristicsCluster Features: TLS bidirectional authentication, RBAC authorization, multi-master high availab
Chapter 1 Meet HadoopData is large, the transfer speed is not improved much. it's a long time to read all data from one single disk-writing is even more slow. the obvious way to reduce the time is read from multiple disk once.The first problem to solve is hardware failure. The second problem is that most analysis task need to be able to combine the data in different hardware.
Chapter 3 The Hadoop Distributed FilesystemFilesystem that manage storage h
Hadoop cannot be started properly (1)
Failed to start after executing $ bin/hadoop start-all.sh.
Exception 1
Exception in thread "Main" Java. Lang. illegalargumentexception: Invalid URI for namenode address (check fs. defaultfs): file: // has no authority.
Localhost: At org. Apache. hadoop. HDFS. server. namenode. namenode. getaddress (namenode. Java: 214)
Localh
This article describes how to quickly deploy a set of kubernetes clusters, so let's get started quickly!
Preparatory work//关闭防火墙systemctl stop firewalld.servicesystemctl disable firewalld.service//关闭selinux,修改/etc/selinux/configSELINUX=disabledMachine Deployment Planning
Host
IP
Deploying Components
Master Master Node
192.168.199.206
ETCD, Kube-apiserver, Kube-controller-manager, Kube-sch
Kubernetes components and role distribution component functions:
-Etcd a highly available k/v key value to the storage and service discovery system-Flannel The communication of the container network of the boast host-Kube-apiserver provides API calls to Kubernetes clusters-Kube-controller-manager ensure Cluster service-Kube-scheduler dispatch container, assign to Node-Kubelet boot container on node
First explain the configured environmentSystem: Ubuntu14.0.4Ide:eclipse 4.4.1Hadoop:hadoop 2.2.0For older versions of Hadoop, you can directly replicate the Hadoop installation directory/contrib/eclipse-plugin/hadoop-0.20.203.0-eclipse-plugin.jar to the Eclipse installation directory/plugins/ (and not personally verified). For HADOOP2, you need to build the jar f
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