Programmer Think

1. Add node node [root@k8s-4 ~]# kubeadm join 192.168.191.30:6443 --token 6zs63l.4qmypshahrd3rt3x \     --discovery-token-ca-cert-hash sha256:851c0bf733fe1e9bff54af08b84e93635d5b9c6e047a68c694c613391e024185   W0323 15:58:36.010687    1427 join.go:346] [preflight] WARNING: JoinControlPane.controlPlane settings will be ignored when control-plane ...

Overview: Kubesphere, which is using qincloud recently, has excellent user experience, privatization deployment, no infrastructure dependence, no Kubernetes dependence. It supports cross physical machine, virtual machine and cloud platform deployment, and can manage Kubernetes clusters of different versions and manufacturers. In the k8s layer ...

There is a server at home, usually used as its own development environment, running some small programs. It is planned to upgrade the server and use k3s to manage common development tools, which is convenient for your own use. Because I only have one server, there is no cluster in this article. Quick install command ## "-- Docker" use ...

1. What is a Dockerfile Dockerfile is a description file for creating a custom Docker image. We can write an instruction in the Dockerfile to control what the image needs to do. The instructions in the Dockerfile are detailed below. 2. Four Functional Partitions of Dockerfile 1. Basic Mirroring Declare the base image for a custom image F ...

Preparation 1. Mac environment requirements Minikube requires VT-x / AMD-v virtualization to be enabled in BIOS. To check if this is running on OSX / macOS, do the following: sysctl -a | grep machdep.cpu.features | grep VMX If there's output, you're great! 2. [recommended] use Tsinghua brew image source cd "$(brew --repo)" ...

The data stored in etcd is divided into flanned network data and k8s container data.      1. Directly backup the data directory of etcd (generally used for single node) The data of etcd will be stored in our command working directory by default. We find that the directory where the data is located will be divided into two folders: snap: store ...

In this article, see how to use the OpenJ9 JVM with Quarkus applications and see the memory usage results. Talk about those things in detail According to the definition on the home page, Quarkus is "Kubernetes native Java stack customized for OpenJDK HotSpot and grailvm". Since I'm a big fan of OpenJ9, I quickly measured the memory us ...

There are two related concepts in Hyperledger Fabric: Private Data and Transient Data. This paper provides four example programs, which correspond to the four combinations of Private Data and Transient Data. By observing the transactions of account books and the world state database, we can understand why Transient Data should be used as input ...

Deploy centos7 container applications Mirror download: [root@yixuan ~]# docker pull daocloud.io/library/centos:7 systemd Integration: Because SYSTEMd requires CAPSYSADMIN permission, which gives it the ability to read to the host cgroup, SYSTEMd has been replaced with fakesystemd in CentOS7.However, ...

Article directory Deploy Kube Prometheus Kube Prometheus project composition Submission of resources Modify grafana Create directory on 32.94, create pv, pvc Create svc of grafana MySQL Create cm for grafana.ini Modify the configuration in grafana deployment, add the operation of mounting configma ...