kubernetes blog

Guide to Questions1. What is kubernetes.2. Try new features in the Kubernetes cluster and how to implement it.3. Watch the spark resource created on the cluster and how to operate it.We need to know before we start.What is KubernetesKubernetes (usually written as "k8s") is the first open source container cluster management project that was ultimately contributed by Google Design and development to Cloud Nat

Deploy a kubernetes cluster on CentOS7.0I. Deployment environment and architecture OpenStack: hengtian cloud 3.4 Operating System: centos 7.0 Flannel: 0.5.5 Kubernetes: 1.2.0 Etcd version: 2.2.2 Docker version: 1.18.0 Cluster information: Role Hostname IP Address Master Master10.0.222.2 Node Node1 10.0.222.3 Node Node210.0.222.4 Node Node3 10.0.222.5 Node Node4 10.0.222.6 The master node contains

Kubernetes 1.5 installation and cluster environment deploymentArticle reprinted from: http://www.cnblogs.com/tynia/p/k8s-cluster.htmlBrief 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, se

I. Introduction of COREDNSKubernetes includes the DNS server Kube-dns for service discovery. The DNS server leverages Skydns's libraries to provide DNS requests for kubernetes pods and services. SkyDNS2 's author, Miek Gieben, created a new DNS server, Coredns, which was built with a more modular, extensible framework. Infoblox has partnered with Miek to use this DNS server as a substitute for kube-dns.COREDNS leverages the server framework developed

first introduce what k8s is: (Quote from k8s Chinese community)Kubernetes is a container cluster management system, it is an open source platform, can realize the automatic deployment of container cluster, auto-scaling capacity, maintenance and other functions. Kubernetes you can: Quick Deploy app Rapid extension Application Seamless docking of new application features

This article will be based on the previous article on the configuration of the DNS service in the Kubernetes cluster environment, in the k8s cluster, pod life cycle is short, pod restart IP address will change, for the application this is unacceptable, in order to solve this problem, The k8s cluster cleverly introduces the DNS service to realize the discovery of the service, in which DNS requires a total of 4 components in the k8s cluster, each of whi

Please be sure to keep the environment consistent To download the required system packages during installation, be sure to connect all the nodes to the Internet . Cluster node information for this installationLab environment: VMware's virtual machines IP Address Host name CPU Memory 192.168.77.133 K8s-m1 6 cores 6G 192.168.77.134 k8s-m2 6 cores 6G 192.168.77.135

Environment:Kubernetes 1.5.2Kubernetes-dashboard 1.5.1Pull Mirror to local first:Docker Pull docker.io/ist0ne/kubernetes-dashboard-amd64:v1.5.1VI Kubernetes-dashboard.yaml' Kind:deploymentApiversion:extensions/v1beta1MetadataLabelsApp:kubernetes-dashboardName:kubernetes-dashboardNamespace:kube-systemSpecReplicas:1SelectorMatchlabels:App:kubernetes-dashboardTemplateMetadataLabelsApp:kubernetes-dashboardComme

Containerized technology (containerization).You may have a lot of doubts: what exactly is a container and how does it work? What does Docker and kubernetes mean, and what is the use of Google Container engine and managed VMS? How are they related, and how can we build a powerful service through containers and make them available in a large-scale cluster of production environments? How can you get business value by using this technology? Well, we don't

Services deployed by users on Kubernetes typically run on private networks, and pod and service provide parameters such as Hostport,nodeport to expose these service ports to K8S nodes for user access. There are obvious drawbacks to this approach:1) Easy to occupy excessive host port;2) service ports exposed to multiple hosts increasing the difficulty of firewalls and security configuration3) The default hostport,nodeport mode does not function as load

1. The following error was reported during the creation of Nginx pod:#kubectlcreate-F Nginx-pod.yaml from " Nginx-pod.yaml " " Nginx " is for default/default is automatically created and added to the service accountWorkaround:1> Modify the Kube_admission_control parameter in the/etc/kubernetes/apiserver file.Before modification:Kube_admission_control="--admission_control=namespacelifecycle,namespaceexists,limitranger, Securitycontextdeny,serviceacco

Brief introductionKubernetes is an open source, containerized application for managing multiple hosts on a cloud platform, with the goal of making deploying containerized applications simple and efficient, Kuernetes provides a mechanism for application deployment, planning, updating, and maintenance.In Kubernetes, all containers are run in pods, and one pod can host one or more related containers. Each pod system created by the user automatically choo

components $ yum install-y etcd kubernetes NTP flannel 3, each node configuration ETCD Server # Modify config file $ vim/etc/etcd/etcd.conf Etcd_name=defaultEtcd_data_dir="/var/lib/etcd/default.etcd"Etcd_listen_client_urls="http://localhost:2379,http://192.168.80.139:2379"Etcd_advertise_client_urls="http://192.168.80.139:2379"# Start Service $ systemctl start ETCD $ systemctl enable etcd# check ETCD cluster status $ etcdctl cluster-Hea

1. Reference documentationhttp://traefik.cn/2. Simple way to accessReference documentshttps://tonybai.com/2018/06/25/the-kubernetes-ingress-practice-for-https-service/Previous: Traefik Basic deployment record, describes the simplest HTTP access Traefik, the access process reference is shown below:Client---(via HTTP)---> Traefik----(via HTTP)----;? ServicesNow to practice is more secure and more complex HTTPS access Traefik, there are two kinds of acce

Kubernetes has developed a Elasticsearch add-on to enable log management of the cluster. This is a combination of Elasticsearch, FLUENTD and Kibana. Elasticsearch is a search engine that is responsible for storing logs and providing query interfaces; Fluentd is responsible for collecting logs from Kubernetes and sending Elasticsearch;kibana a Web GUI that users can browse and search for stored in Logs in th

the direct-connect route mode)5 Sets of machinesMaster 10.1.11.250 Gateway 10.1.11.254Add 2 routes 10.1.51.0/24 GW 10.1.11.1 (direct learning via OSPF software quagga)10.1.52.0/24 GW 10.1.11.2Node1 10.1.11.1 Gateway 10.1.11.254 Docker Network 10.1.51.1 an additional virtual NIC 10.1.200.25310.1.52.0/24 10.1.11.2 (quagga)Node2 10.1.11.2 Gateway 10.1.11.254 Docker Network 10.1.52.1 an additional virtual NIC 10.1.200.25310.1.51.0/24 10.1.11.1 (quagga)Gateway Router 10.1.11.254 External network 10.

The previous blog has introduced the deployment of a simple kubernetes cluster, but the cluster environment does not have a reasonable network configuration. In the actual production to realize the communication of the components in the cluster, it is necessary to use the network plug-in provided by the third party.Flannel binary Installation1. Download Fannel componentswget https://github.com/coreos/flanne

Configmap Description of KubernetesIn this blog post, let's say a question about customizing the configuration in the pod of kubernetes.We know that in almost all application development, configuration file changes are involved, such as in the Web program, the need to connect to the database, cache, and even queues. And one of our applications starts with writing the first line of code, going through the development environment, the test environment,

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