Linux basic file operation exercise (with answer analysis)

1. Creation and deletion of files (1) Practice using - p or -- parents to create multi-level directories on the desktop at the same time, such as xx/yy/zz. mkdir - p} xx/yy/zz or mkdir --parents xx/yy/zz [tom@iZbp12r8eimkkdor4011j3Z ~]$ mkdir -p xx/yy/zz [tom@iZbp12r8eimkkdor4011j3Z ~]$ ls xx #Note that if you want to create a multi- ...

Added by londonjustin on Fri, 24 Dec 2021 21:01:51 +0200

kubernetes high availability cluster

I. high availability of Kubernetes The high availability of Kubernetes mainly refers to the high availability of the control plane. In short, there are multiple sets of Master node components and etcd components, and the work nodes are connected to each Master through load balancing. HA has two methods. One is to mix etcd with Master node comp ...

Added by scripterdx on Fri, 24 Dec 2021 08:15:49 +0200

Control WS2812 Christmas tree lighting with raspberry pie

By Stack Thomas Translator: Crescent Moon Produced by | CSDN (ID: CSDNnews) Note: home network security is not considered in this project. You should use a password and make sure the network is inaccessible. I don't have any experience in IT, but after studying for some time, I successfully completed the project, which is due to several op ...

Added by rgriffin3838 on Fri, 24 Dec 2021 06:40:07 +0200

Smart home system construction of Shanshui

1, Construction method At present, there are four main types. I don't need to see them again. I've compared them many times. I can directly choose the OS mode. The disadvantage is that this virtual machine can only run the function of HASS, but it has strong stability than everything else Installing HassOS in the virtualization station of Uni ...

Added by pucker22 on Fri, 24 Dec 2021 05:20:28 +0200

Resource scheduling (nodeSelector, nodeAffinity, taint, Tolrations)

Resource scheduling (nodeSelector, nodeAffinity, taint, Tolrations) Kubernetes is a master-slave distributed architecture consisting mainly of Master Node and Worker Node, as well as client command line tools kubectl and other add-ons. Master Node: As a control node, dispatch management of the cluster; Master Node consists of API Server, Sche ...

Added by salih0vicX on Fri, 24 Dec 2021 04:15:19 +0200

Supervisor Process Manager

Supervisor overviewSupervisor is a Client/Server mode system that allows users to monitor and control multiple processes, or programs, on a unix like operating system. Supervisor has the same functions as launchd, daemon tools, runit and other programs. Different from some of them, it does not replace init as a "process with id 1". On ...

Added by FlashHeart on Fri, 24 Dec 2021 02:01:35 +0200

Analysis of linux mining virus

Recently, my test virtual machine was a little abnormal. I found a strange process named vp0erom, which has a particularly high cpu occupancy. So I tossed and analyzed it, trying to find out the reason. After looking at the ip connected to the process, I knew it was a mining virus. The following is a simple analysis process. 1. The top comma ...

Added by brandye71 on Fri, 24 Dec 2021 01:26:00 +0200

K8S resource controller

1. Introduction Autonomous pod and controller managed Pod: Autonomous Pod: the pod exits and will not be created again because there is no manager (resource controller).Pod managed by the controller: maintain the number of copies of the pod throughout the life cycle of the controller There are many controller s built in K8S, which are equiva ...

Added by billthrill on Thu, 23 Dec 2021 09:03:19 +0200

Best practices for intelligent patrol cloud monitoring indicators

Introduction: in real enterprise production, students of R & D and operation and maintenance will face a very complex and difficult problem, that is, monitoring and alarm of indicators. Specifically, I will enumerate some specific problems. Please take your seat according to the number and see if you can solve them together through computin ...

Added by ExpertAlmost on Wed, 22 Dec 2021 19:16:56 +0200

Introduction to canal and its deployment, principle and use

Introduction to Alibaba canal and its deployment, principle and use Introduction to canal What is canal Alibaba B2B company, because of the characteristics of its business, sellers are mainly concentrated in China and buyers are mainly concentrated in foreign countries, so it has derived the demand for remote computer rooms in Hangzhou and t ...

Added by ankit17_ag on Wed, 22 Dec 2021 06:28:20 +0200