kubernetes scheduler

Detailed guide for manual installation and deployment of Kubernetes on Ubuntu, ubuntukubernetes Background Two Ubuntu16.04 servers: 192.168.56.160 and 192.168.56.161. Kubernetes version: 1.5.5 Docker version: 1.12.6 Etcd version: 2.2.1 Flannel version: 0.5.6 Among them, 160 servers are both master nodes of Kubernetes and node nodes. 161 servers are only node node

nodes (node). Among them, a cluster management-related set of processes Kube-apiserver, Kube-controller-manager and Kube-scheduler are running on the master node, which realizes resource management, pod scheduling, elastic scaling, Security control, system monitoring and error correction management functions, and are fully automated. Node runs the real application as a working node in the cluster. The smallest running unit managed by

-node1.example.com" -out cs_client.csropenssl x509 -req -in cs_client.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out cs_client.crt -days 5000Where CS_CLIENT.CRT is generated, the-CA parameter and-cakey parameters use Apiserver ca.crt and Ca.key files, and then copy the files into a directory (/var/run/kubernetes)Next Create the/etc/kubernetes/kubeconfig file (Kube-controller-manager and Kube-

, Minion Registry, Binding Registry, Reststorage, and client, is the client (kubecfg) call Kubernetes API, management kubernetes main components pods, Access to Services, Minions, and containers. Master is made up of API Server, Scheduler, and registry. From 3-2, Master's workflow is mainly divided into the following steps:1) Kubecfg sends a specific request, suc

Controller information to etcd.3.1.5 Endpoints Registry Endpoints Registry is responsible for collecting Service Endpoints, such as Name: "mysql", Endpoints: ["10.10.1.1: 1909", "10.10.2.2: 8834"], the same as Pod Registry, the Controller Registry also implements the RESTful API interface of the Kubernetes API Server. It can perform Create, Get, List, Update, Delete, and watch operations.3.1.6 Binding Registry Binding includes the ID of the Pod to be

for service and replication controller operations, and in order to forward requests for access to services to multiple containers that provide service to the backend, it is by identifying the labels of the container that the correct container is selected. Similarly, Replication controller uses labels to manage a set of containers created through the pod template, so that Replication controller makes it easier and easier to manage multiple containers, no matter how many containers. 4.

As we all know, kubernetes (k8s) is used for the management of Docker cluster, the recent period of time has been tossing the environment, here to write a blog, to help like me, small white, avoid detours. First, the environment Cluster environment Role IP Address Version number Docker version System version Master 192.63.63.1/24 v1.9.1 17.12.0-ce Centos7.1 Node1 192.63.63.10/24

the label "App=backend", and when creating service and Replicationcontroller you can specify the same label: "App=backend", and then through the label selector mechanism, They are associated with these three pods. For example, when another frontend pod accesses the service, it is automatically forwarded to one of the backend pods.3. Kubernetes ComponentsKubenetes overall framework such as, mainly includes kubecfg, Master API Server, Kubelet, Minion (

cluster will re-collect the previously lost information This, of course, also means that if you etcd hang up and then a running program crashes or another error occurs, etcd he won't be able to handle the problem automatically until it restarts. Kubernetes's design helps it not be easily broken by bugs Like any other software, Kubernetes there will be bug . For example, the controller in our cluster now has a memory leak problem, and the

-server-linux-amd64.tar.gztar -XZVF Kubernetes-server-linux-amd64. Tar . GZCD kubernetes tar -xzvf kubernetes-src. Tar. gzCopy the binary file to/usr/bin, may prompt overwrite, because the front installed KUBECTL will be installed part, the direct overwrite is good, the following statement uses the-R to overwrite, does not add-R prompts, and this server contain