images installation and init operation during k8s installation in kubadm mode

When using kubeadm to install k8s, there is a step to download images. Generally, many methods are used: use docker images to download the image name and tag the image name again, and then configure the cluster sub ip information during initialization As follows:         1.Set up kubelet Domestic pause image         cat >/etc/sysconfig/kube ...

Posted by porta325 on Mon, 23 Mar 2020 08:21:10 -0700

Kubernetes cluster practice (08) upgrading cluster

ECK has not been deployed on the cluster for a long time and has not been officially put into use. Many problems have been found in the trial phase. Now it is about to be formally deployed. I want to upgrade the k8s cluster when it is formally deployed. After reading some data, since my cluster has only one master node, although it is very pow ...

Posted by flash-genie on Sat, 21 Mar 2020 07:14:15 -0700

Kubernetes 1.17.4 quick upgrade

Kubernetes 1.17.4 has been officially released, and it can also be upgraded directly for highly available clusters. The quick upgrade (including the quick download link of domestic image) includes three main steps: upgrading the kubeadm/kubectl/kubelet version, pulling the image, and upgrading the kubernetes cluster. Reference The software lock ...

Posted by jonah on Wed, 18 Mar 2020 09:28:32 -0700

Prometheusf installation and use

Reference resources https://blog.51cto.com/14157628/2473866?source=dra Before deploying Prometheus, due to the low configuration of the experimental environment, the original dashboard and Scope were deleted! Before you actually deploy Prometheus, you should understand the relationships and functions among the components of Prometheus: 1) ...

Posted by [JayZ] on Wed, 18 Mar 2020 08:22:06 -0700

Kubedge deployment ~ Kubernetes 1.17.4 deployment

This paper introduces how to deploy Kubernetes 1.17.4 cluster using kubeadm on ubuntu 18.04 64 bit dual core CPU virtual machine. The network plug-in is flannel v0.11.0, and the image source is alicloud 1, Install docker apt-get install docker.io Execute the following command to create a new / etc/ ...

Posted by steamPunk on Tue, 17 Mar 2020 00:37:39 -0700

Kubernetes Beginner k8s Cluster Environment Setup

Reference QianFeng Li Weimin brief introduction Kubernetes, created and managed by Google in 2014, is an open source version of Borg, Google's 10-year-old large-scale container management technology.Is a container cluster management system, is an open source platform, can achieve automatic deployment ...

Posted by iloveyou on Wed, 11 Mar 2020 22:59:37 -0700

Prepare for CKA's daily question - day 2 | Daemonset, docking storage CSI knowledge points

This activity is held on WeChat official account (my small bowl soup), and there is book delivery activity. You can't take part in the book delivery activity if you take part in the question answering here! Pick up another article. Prepare for CKA daily question - day 1 Yesterday's examination questions Which of the following Daemonset yaml i ...

Posted by neostrife on Wed, 11 Mar 2020 04:28:35 -0700

Kubernetes Pod Controller

In robotic technology and automation, the control ring is an endless loop of control system state This is an example of a control ring:'Automatic temperature regulator in a room'When you set the temperature and tell the thermostat your "expected state", the actual temperature of the room is "current state".By switching th ...

Posted by joseph on Mon, 02 Mar 2020 17:09:55 -0800

Prepare for CKA daily question - day 13: static Pod creation method, Pod domain name resolution test

Yesterday's examination questions Set configuration context $ kubectl config use-context wk8s configure the kubelet systemed managed service, on the node labelled with name=wk8s-node-1,to launch a pod containing a single container of image nginx named myservice automatically. Any spec file requried should be placed in the /etc/kuberneteds/mai ...

Posted by snowman2344 on Sun, 01 Mar 2020 20:02:54 -0800

The implementation of kubernetes resource extension mechanism

Yesterday, we introduced the key components of resource plug-in mechanism in k8s. Today, we will continue to see how each component communicates and the key design behind event handling in k8s 1.PluginManager PluginManager is a top-level component, which contains the key components in the previous article, coordinates its internal data flow, an ...

Posted by Sillysoft on Mon, 17 Feb 2020 20:20:07 -0800