kubernetes command

Brief Description:RKE (Rancher Kubernetes Engine) is a tool provided by Rancherlabs to quickly install Kubernetes clusters on bare metal, virtual machines, public and private clouds. The deployment of the entire cluster requires only one command, one configuration file, which solves the problem of how to easily deploy kubernetes.Although rancher provides free vid

Kubernetes cluster configuration notes This article describes how to configure a Kubernetes cluster. A kubernetes cluster consists of a master node and a slave node. Run the following services on the Master node:Etcd (the etcd service can also be run independently, not necessarily on the Master node)Kube-apiserverKube-controller-managerKube-schedulerKubeletKube-p

The core issue in Kubernetes architecture is how data is persistance, although it provides persistent volumn, but it is difficult to run and manage products like databases in a kubernetes cluster environment. Kubernetes provides endpoints this mode to map external services into internal services, which solves the problem of cluster external connection,If we are g

Wenjun's intellect that has not only accomplished her own, but also made his husband more successful. Shisheng du fu all use "Mao ling many sickness, Shanga" to praise their love. If Sima Xiangru, such as marrying someone else, the "Phoenix seeking Huang" can be seen, bones subject the same characters.Today's theme is not Love is not poetry, we use "The" to talk about k8s basic knowledge Keywords:One target: container operation; three centers of two places; four-layer service discovery; Five po

[TOC]Brief introductionIn many scenarios, the following initialization is required before the application starts: Wait for other associated components to run correctly (for example, a database or a background service) Generate a configuration file based on an environment variable or a configuration template Get the local desired configuration from the remote database, or register itself in a central database Download the dependent packages or perform some pre-configuration a

A description of the application scenarioContinuous tracking research kubernetes also for some time, kubernetes as Google open-source production-level container scheduling system from open source has received a lot of attention. A number of research and development companies have researched Kubernetes's design concepts and application scenarios and soon organized developers to combine

KUBERNETES cluster to build the basic environmentSystem Environment # Cat/etc/redhat-releasecentos Linux release 7.3.1611 (Core) Host name Settings Centos-master 192.168.59.135centos-minion1 192.168.59.132centos-minion2 192.168.59.133Restart server after SELinux and Firewalld are turned off# systemctl Stop firewalld# systemctl disable firewalld# setenforce 0# sed-i ' s/^selinux=.*/selinux=disableds/'/etc/seli Nux/configMaster Node Installation D

The content of this section: Service Discovery and load balancing Ingress Combat First, service discovery and load balancingIn the previous installation deployment Kubernetes cluster, it was simple to demonstrate that pod and Service,kubernetes implemented service discovery and load balancing for containers within the Kubernetes cluster through

This is a creation in Article, where the information may have evolved or changed. kubectlis k8s clustet manager the command-line tool for control: $ kubectlkubectl controls the Kubernetes cluster manager.Find more information at https://github.com/kubernetes/kubernetes.Usage: kubectl [flags] kubectl [command]Availabl

Summary: Kubernetes is Google open source container cluster management system, built on Docker, for containerized applications to provide resource scheduling, deployment operations, service discovery, capacity expansion and other functions. Pods are the smallest deployment units that are created, dispatched, and managed, and this article describes the communication and scheduling between these pods in detailOverviewThe Pods in

Here, I'll show you how to install a kubernetes cluster that contains 1 Master 2 minions.Environmental requirements:CENTOS7 64-bit system three machinesmaster:192.168.5.131minions:192.168.5.132minions:192.168.5.133Components of the Kubernetes:EtcdFlannelKube-apiserverKube-controller-managerKube-schedulerKubeletKube-proxyFirst, deploy to Centos7The figure is then furnishedPrerequisite Each machine disables iptables to avoid iptables conflicts

containers, making deployment and management more flexible. 　　　　　　 　　　　　　 A pod can contain a container or multiple related containers. 2) Replication ControllerThe Replication Controller manages a copy of the pod to ensure that a specified number of pod copies exist in the cluster. If the number of replicas in the cluster is greater than the specified number, the number of extra containers that are outside the specified number is stopped, and conversely, containers with fewer than a specified

Hi,everybody, I came back, before the installation to flannel, the article has not been updated, even a lot of small partners to add QQ asked whether to continue to update,Here is the reason, I was in the deployment of 1.91node when there are a variety of problems, resulting in node startup Oh, master always do not see, the problem is probably1, Virtual machine time synchronization inconsistency problem, causing ETCD to create a resource is unsuccessful2, node nodes can not automatically create

0. PrefaceOverall architecture directory: ASP. NET core distributed project-Directoryk8s Schema Catalog: Kubernetes (K8S) cluster deployment (K8S Enterprise Docker container cluster Management) series catalog1. Deploy Master ComponentsThe components of the master server are: Kube-apiserver, Kube-controller-manager, Kube-schedulerSo you need to download k8s master,:https://github.com/kubernetes/

in the producer to see if the consumer is able to receive it. If received, the description runs successfully.Finally, you can also execute the following command to test the list of all message topics:kafka-topics.sh--list--zookeeper [Zookeeper service clusterip]:2181Note that sometimes it is necessary to use Kafka port, sometimes need to use zookeeper port, should pay attention to distinguish.Two, multi-node Kafka clusterOnce the single-node service

command to querykubectl exec -it tools-dns-5665d49688-8jrnw /bin/bash View a record (that is, address record IPv4) Nslookup-query=a _http._tcp.curl.kube-system View SRV records (a domain Name System (DNS) resource record that identifies the computer that hosts a particular service) Nslookup-query=srv _http._tcp.curl.kube-system(Description: Service = 10 (priority) 100 (specific gravity) 80 (port) curl.kube-sy

Introduction and practice of pod in kubernetes The concept of podDetailed pod explanation can refer to k8s official website, the concept of pod mainly has the following points:(1) Pod is the smallest and simplest unit that you can create and deploy in Kubernetes. A pod represents a process that runs in a cluster;(2) How to use pod in kubrenetes cluster;(3) How to manage multiple containers in pod Unde

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

Service discovery mechanism Kubernetes provides two ways to discover the service:1. Environment Variables When the pod is running, Kubernetes writes the information for the service that existed before This method requires that the pod must be started after the service. The pod that was started before the service will not have an environment variable for that service. There is no such limit in the way

This is a creation in Article, where the information may have evolved or changed. Kris Nova, of Microsoft, shares lessons on over-engineering from she experience contributing to Kubernetes Kops. In hers spare time, she runs a Kubernetes special Interest Group bringing Kubernetes to AWS, all and working on Microsoft Acs. She ' s writing a book called Cloud Native