kubernetes blog

1. The installation environment is CentOS 72. Installing Docker Yum Install-y Docker Systemctl Enable Docker Systemctl Start Docker 3. Installation of the MLM cat eof >/etc/yum.repos.d/kubernetes.repo[kubernetes]name= Kubernetesbaseurl=http://yum.kubernetes.io/repos/kubernetes-el7-x86_64 Enabled=1gpgcheck=1repo_gpgcheck=1gpgkey=https:// Packages.cloud.google.com/yum/doc/yum-key.g

Kubernetes Network Model A fundamental principle of the Kubernetes network model design is that each pod has a separate IP address, and that all pods are in a flat network space that can be directly connected. So whether or not they run in the same node (host), they are required to be accessed directly from each other's IP. The reason for this principle is that the user does not need to consider ho

One. Container:1. A container is a way to run one or a set of processes, isolating these processes from other processes on the host2. Containers are similar to virtual machines, but different from virtual machinesContainer virtual machineKernel calls the host's kernel per virtual machine oneStart speed seconds-level minuteResources use only the processes in the container occupy the entire virtual machineTwo. What is Kubernets?1. is a container organizer, or container manager:Not only manages con

Heapster is a container cluster monitoring and performance analysis tool that naturally supports kubernetes and CoreOS.Kubernetes has a well-known surveillance agent-cadvisor. The cadvisor is run on each kubernetes node, and it collects monitoring data (cpu,memory,filesystem,network,uptime) for both native and container.In the newer version, K8S has integrated the Cadvisor functionality into the Kubelet com

The previous article describes the use of Traefik for service publishing in Kubernetes 1.5.2 cluster environments. Traefik is deployed in Daemonset mode, and the connection Api-server is the HTTP protocol, and RBAC is not configured. This article describes the deployment of Traefik for service publishing in the K8s 1.9 release using the deployment method.Before you begin, you need to know what RBAC is. RBAC (role-based access control) using the Rbac.a

Tags: Host file Create request Val SSM LOB environment ant followThis article describes the deployment of MySQL master-slave cluster in a kubernetes environment, with data persistence using NFS. I. Introduction to the EnvironmentMySQL Version: 5.7 Mysql Master node:Host Name: VM1IP Address: 192.168.115.5/24 Mysql slave node:Host Name: VM2IP Address: 192.168.115.6/24 NFS Node:Host Name: VM2IP Address: 192.168.115.6/24Shared Directories:/home/mysql_mast

Kubernetes Important Concept UnderstandingKubernetes is currently the most mainstream container orchestration tool, the next generation of distributed architecture of the king. 2018 Kubernetes The first version 1.10 has been released. Here's a look at some of the basic concepts of kubernetes.The kubernetes divides the machines in the cluster into master nodes and

Operational environment readiness and related software requirements1. Production-grade Kubernetes cluster recommended 1.8 or later2.Gitlab Docker Image Slpcat/gitlab-ce3.Jenkins Docker ImageJenkins master image Slpcat/kube-jenkins-service has been installed with various plugins required, preconfigured with Kubernetes management Jenkins slave Jenkins slave image slpcat/kube- Jenkins-dind-agentSupport for JNL

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 Communication in node nodes is impleme

Brief introduction:Docker: An open-source application container engine that can create a lightweight, portable, self-sufficient container for your application.Kubernetes: The Docker container Cluster Management system, which is open source by Google, provides the functions of resource scheduling, deployment operation, service discovery, capacity scaling and so on for containerized applications.ETCD: A highly available key-value storage system developed and maintained by CoreOS, primarily for sha

Article from: Listen to the Cloud blogAs our business continues to grow, our number of applications has exploded. With the growth of application explosion, the difficulty of management is increased. How to quickly complete the expansion while the business explosion is growing is a big challenge. The advent of Docker happened to solve our problem. With Docker, we can quickly complete the expansion and contraction, and the configuration is uniform and error-prone.In the Docker cluster management s

Kubernetes about the service exposure is mainly through the Nodeport way, through the binding minion host of a port, then the pod request forwarding and load balancing, but this way the defect is The service may have many, if each is bound to a node host port, the host needs to open the perimeter of a heap of ports to make services calls, management confusion Cannot apply firewall rules required by many companies The ideal way is thr

footprint.3. Log in hub.docker.com using the Docker login command4. Push the local image to hub.docker.com using a command such as Docker push Chenxizhang/mvcapp, which may take a certain amount of time, depending on your network configurationIf all goes well, you can see the following resultsNote: If you are creating your own Docker warehouse, you can learn about the Azure Container Registry service. (https://azure.microsoft.com/zh-cn/services/container-registry/), do not unfold here.Create

Teaches you how to accelerate the deployment of k8s in China and implement custom settings that have a k8s image of the warehouse with its namespace.OverviewKubernetes is a powerful container orchestration tool that enables users to reliably deploy and run containerized applications on a scalable system. Within the container area, k8s has undoubtedly become a community standard for container orchestration and management, and even Docker has announced support for K8s. The fighting in the field of

certification aspects of processing, certification is actually entrusted to K8s Apiserver responsible, dashboard just based on user login information generated Authinfo object, encrypted as token carried in the browser, that is Jwe protocol, Jwe Sub-package is the implementation of the JWE protocol, where Keyholder (Rsakeyholder concrete Class) manages the key pair used by Jwe and stores the secret key in Kubernetes-dashboard-key-holder Secrets objec

--dport 2380-m State--state new-j ACCEPTTurn off selinux#setenforce 0[Email protected] ~]# sed-i '/^selinux=/c selinux=disabled '/etc/selinux/config2 , installation ETCDgit address:https://github.com/coreos/etcd/releases/ETCD Chinese Document:http://etcd.doczh.cn/documentation/Download the installation package:https://github.com/coreos/etcd/releases/download/v3.3.8/etcd-v3.3.8-linux-amd64.tar.gz#tar-ZXVF etcd-v3.3.8-linux-amd64.tar.gz#ln-S Etcd-v3.3.8-linux-amd64 etcd#cd ETCD#cp etcd*/bin/#etcd

First of all, we need to understand the function of kubernetes, in short, it provides a container orchestration technology, to provide users with a container-based service rapid deployment, upgrade, rollback, access control, elastic scaling and other scheduling functions, so that users in the development, testing, production environment can achieve agile development, The purpose of fast and reliable delivery.Second, you need to understand the kubernet

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 und

mountpath:/logs volumes: -name:app-logs Emptudir : {} View Log kubectl logs 5. Configuration management of Pod The Kubernetes v1.2 version provides a unified cluster configuration management solution –configmap. 5.1. Configmap: Configuration management for container applications Usage Scenario: Live as an environment variable within a container. Set startup parameters for the container startup command (set to environment variable). Mou

Use Google Cloud deployment Manager to install and run Istio's quick start instructions in Google kubernetes Engine(Gke). This quick start is used to create a new Gke cluster, install Istio, and then deploy the BookInfo sample application. It is performed automatically using Deployment Manager and is described in detail in the istio on kubernetes setup Guide . Note: The default installation creates a Gke Al