yum source essential skills, different yum source configurations to adapt to different environments!!

Source configuration of [Linux dictionary] preface The YUM software warehouse can complete the tasks of installing, uninstalling, and automatically upgrading rpm packages. It can automatically find and solve the dependencies between rpm packages without requiring the administrator to install each rpm package one by one and manually, m ...

Posted by wildwobby on Tue, 14 Dec 2021 21:40:33 +0100

Remote access and control that operation and maintenance personnel must understand

Remote access and control of [Linux dictionary] preface SSH is basically used for remote management of linux systems. The reason is very simple: Telnet, FTP and other transmission methods transmit user authentication information in plaintext, which is inherently unsafe and has the risk of being eavesdropped by the network. SSH (Secure ...

Posted by [e]r!k on Tue, 14 Dec 2021 19:56:52 +0100

Embedded linux / Hongmeng development board (IMX6ULL) application development basic knowledge file IO

4. File IO Reference books: The contents of these two books are similar. The first one has a more detailed description of knowledge points, which is suitable for beginners; The second book is more direct. It is an introduction to various functions. It is suitable for use as a dictionary. If you don't understand it, go and have a look. To ...

Posted by mgason on Tue, 14 Dec 2021 14:56:48 +0100

An article to understand linux users and user groups

introduce linux is a multi-user system, which arranges corresponding permissions for each user, so as to better manage files. For example, a user assigns a class of files, so that this class of files can only allow specific users to carry out sensitive operations, so as to prevent other files from being affected and the system from running ...

Posted by jandante@telenet.be on Sun, 12 Dec 2021 21:04:59 +0100

New silly girl installation tutorial

QQ group: 984698352 Boarding address: www.ake01.com top This paper consists of the following parts Introduction to basic functions of silly girl.Silly girl robot installation (only connected to QQ)Silly girl general settingsSilly girl docking WeChat / official account /TG robotSilly girl restart and replace robot QQSilly girl Qinglong extend ...

Posted by mosherben on Sat, 11 Dec 2021 12:27:29 +0100

[Rocky Linux] Rocky Linux version 8.5 new graphic installation tutorial and Ali image source replacement and other configuration operations

1, Refer to link description The article involves image download and reference materials as follows: Rocky Linux Official website:https://rockylinux.org/ Rocky Linux official website installation manual document: https://docs.rockylinux.org/zh/guides/installation/ Rcoky Linux version 8.5 image download link: https://www.ro ...

Posted by azwebdiva on Fri, 10 Dec 2021 12:59:33 +0100

Prometheus deployment alarm docking QQ mailbox

introduction Prometheus' ability to collect and store indicators belongs to two independent components, Prometheus Server and alertmanager (general component). The former is only responsible for generating alarm notifications based on "alarm rules", and the specific alarm operations are completed by the latter. Alertmanager i ...

Posted by rigi2 on Fri, 10 Dec 2021 12:58:49 +0100

Day 8: free usage of common Linux commands

1. Command introduction When our online maintenance server is running normally, a very important indicator is about the memory utilization rate. When the memory utilization rate of our server is too high, it is bound to reduce the operation performance of the server. In this regard, we will build some real-time monitoring platforms to facili ...

Posted by phpdood on Thu, 09 Dec 2021 19:09:43 +0100

supervisor manages the process of the server -- daemon

preface Recently, the kafka process crashed because of the company's production line server. After checking, the official website told me it was a bug. Just upgrade the version. Sometimes it just collapses. So the daemon is on the agenda. Colleagues have studied the supervisor. Now we can use it for process status query, guard and startup. Thi ...

Posted by xenooreo on Thu, 09 Dec 2021 07:04:52 +0100

DHCP server setup

matters needing attention When using two Linux hosts, you must ensure that the two devices can be connected to each other. You can configure static IP first to test whether the two hosts are connectedIn the virtual network editor, do not use the local DHCP service to assign IP addresses to virtual machinesBoth devices use host only mode ...

Posted by gitosh on Thu, 09 Dec 2021 06:14:24 +0100