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I wrote an article about openstack iron bare metal operation before, which mainly introduces the state machine of iron and the introduction of issuing memory operating system with iron. Interested friends can refer to: Openstack electronic bare metal Practice In this article, I want to talk about the operation of lowering the image and starti ...

1, K8S monitoring component metrics server Installation steps 1.Add open source warehouse [root@k8s-master ~]# helm repo add kaiyuanshe http://mirror.kaiyuanshe.cn/kubernetes/charts/ #Search metrics server [root@k8s-master ~]# helm search repo metrics-server 2.download metrics-server package helm pull kaiyuanshe/metrics-server 3.decompre ...

k8s cluster environment construction preface Today, let's use kubeam to build a k8s cluster to prepare the environment for the microservice project we will write later. First, let's take a look Construction steps Turn off firewall systemctl stop firewalld.service systemctl disable firewalld.service Modify selinux setenforce 0 temporary ...

Pod is composed of containers, and after the container is down or stopped, the data will be lost. This means that we have to consider the storage problem when we are doing Kubernetes cluster, and the storage volume is created for pod to save data. There are many types of storage volumes. We usually use four types: emptyDir, hostPath, NFS and ...

Micro services involved demo involving three microservices: Service registration and discovery: Eureka serverManagement service: admin serviceUser service: User Service The management service and User service will register with eureka. When accessing the add user api of the Admin service, the Admin service will call the add user api of the U ...

WeChat official account: operation and development story, author: Liu Daxian K3S Description: K3s (lightweight Kubernetes): similar to RKE, it is also a certified Kubernetes distribution. It is newer than RKE, easier to use and lighter. All components are in a binary file less than 100 MB. From Rancher v2 Starting from 4, the Rancher can be ...

1, Configmap configuration management Introduction: • Configmap is used to save configuration data in the form of key value pairs. • the configMap resource provides a way to inject configuration data into the Pod. • it aims to decouple the image from the configuration file in order to realize the portability and reusability of ...

k8s access control Authentication There are 8 authentication methods. One or more authentication methods can be enabled. As long as one authentication method passes, other authentication methods will not be carried out. X509 Client Certs and Service Accout Tokens are usually enabled. There are two types of users in Kubernetes cluster: Ser ...

Implementation of resource constraints Kubernetes' restriction on resources is actually controlled by cgroup, which is a set of related attributes of the container used to control how the kernel runs the process. There are corresponding cgroups for memory, CPU and various devices. By default, Pod runs without CPU and memory limits. This m ...

Resource management and YAML files 1, Introduction to resource management In kubernetes, all contents are abstracted as resources. Users need to manage kubernetes by operating resources. Kubernetes is essentially a cluster system. Users can deploy various services in the cluster. The so-called deployment service actually means running ...