Programmer Group

At first, the privilege mode of apiserver, kubelet node is opened in accordance with the relevant documents - allow-privileged=true, and then executed with ali document, it can not run at all. Referring to issue in github, we know that it's all about why the problem doesn't work, but the response is not clear, and it does mention the need to ...

system description System Component Version Operating System: CentOS 7.6 Kernel: 4.4 Kubernetes: v1.14.1 Docker: 18.09 (supported 1.13.1, 17.03, 17.06, 17.09, 18.06, 18.09) Etcd: v3.3.12 Flannel: v0.11 cni-plugins: v0.7.5 CoreDNS: 1.4.0 Schematic diagram Architecture description: Use six hosts, three Master nodes, three node nodes The Kube ...

Background Rancher HA is deployed in a variety of ways: Helm HA installation deploys Rancher in the existing Kubernetes cluster. Rancher will use the cluster etcd to store data and use Kubernetes scheduling to achieve high availability. RKE HA installation, using RKE tools to install a separate Kubernetes cluster, dedicated to Rancher HA depl ...

New features of Kubernetes 1.13 Using kubeadm (GA) to simplify Kubernetes cluster management Most engineers with Kubernetes should be able to use kubeadm. It is an important tool for managing the life cycle of a cluster, from creation to configuration to upgrade; now kubeadm has officially become GA. Kubeadm handles the guidan ...

k8s master load balancing 1. Server PlanningNote: Only master load balancing is implemented Server name IP role k8s-master1  192.168.1.107  k8s-master1,etcd k8s-master2  192.168.1.108 k8s-master2 k8s-node1  192.168.1.109 k8s-node1 nginx  192.168.1.55 nginx load 2.k8s-master1 deployment1. Install Docker #Close the firewall ufw disab ...

hostNetWork:true Test yaml: apiVersion: v1 kind: Pod metadata: name: nginx-hostnetwork spec: hostNetwork: true containers: - name: nginx-hostnetwork image: nginx:1.7.9 # Create pod s and test them $ kubectl create -f nginx-hostnetwork.yaml $ kubectl get pod --all-namespaces -o=wide | grep nginx-hostnetwork default ...

Although in Kubernetes v1.2, Kubernetes introduced the Deployments feature, Deployment manages Pod s by creating ReplicaSets, which are considered the next generation of Replication Controller. But in fact, the difference between ReplicaSet and Replication Controller is simply the type of support that its Selector supports. ReplicaSet supports ...

Source version Kubernetes v1.5.0 brief introduction There are various resources in k8s, such as Pod, Service, RC, namespaces and so on. In fact, the user operates on a large number of resources. But these resources are not messy, they are organized in the way of Group Version. Each resource belongs to a group, and there are versions of resource ...

Installing master node using kubeadm 1. Basic configuration preparation # swapoff - Close swap swapoff -a sed -ri "/swap/s@(.*)@#/&@g" /etc/fstab # Firewall limit - Open default iptables rules echo -e "net.bridge.bridge-nf-call-ip6tables = 1\nnet.bridge.bridge-nf-call-iptables = 1\nnet.ipv4.ip_forward = 1" >> ...

In some scenarios, dubbo consumer s may need to access dubbo provider s deployed in k8s during development. Especially in the self-built kubernetes cluster environment, the port of tcp is difficult to proxy, which leads to the difficulty of developing services within the development link cluster. Service can be used here to expose dubbo service ...