Overall understanding of system D instructions

systemctl understanding There are two ways of Linux service management: service and systemctl systemd is the latest initialization system (init) of Linux system. Its function is to improve the startup speed of the system, start fewer processes as much as possible and start more processes concurrently as much as possible. The process manageme ...

Posted by bluesoul on Sun, 08 May 2022 21:57:21 +0300

VirtualBox installation CentOS related network configuration and problems

VirtualBox installation CentOS related network configuration and problems 1. General description (1) This article does not cover how to install CentOS. If you need this part, you can refer to other blog posts. (2) After installing CentOS, there are many wonderful problems in the network. This paper aims to give a reference scheme on how to co ...

Posted by villager203 on Sun, 08 May 2022 13:34:31 +0300

Crazy God Theory docker basic chapter

Learning links Crazy God said station B video Learning docker Using docker docker official document dockerhub official website 1, Docker overview 1. Why does docker appear? One product: development – online two sets of environments! Application environment, application configuration! Development - operation and maintenance. Question ...

Posted by py343 on Sun, 08 May 2022 13:31:22 +0300

Can a port number be bound by two processes at the same time?

1, Can a port number be bound by two processes at the same time? According to the binding of port number, we will discuss the following situations: The two processes establish TCP server s respectively and use the same port number 8888 Two processes establish UDP server s respectively and use the same port number 8888 Two processes, one esta ...

Posted by Collin on Sun, 08 May 2022 07:17:03 +0300

Linux network status tool ss command usage details

The SS command is used to display the socket status It can display PACKET sockets, TCP sockets, UDP sockets, DCCP sockets, RAW sockets, Unix domain sockets and other statistics It displays more tcp and state information than other tools It is a very practical, fast and effective new tool to track IP connections and sockets SS command The follo ...

Posted by mackevin on Sun, 08 May 2022 06:57:12 +0300

Technology sharing | common causes of MySQL startup failure

Author: Yao yuan Focus on Oracle and MySQL databases for many years, Oracle 10G and 12C OCM, MySQL 5.6, 5.7, 8.0 OCP. Now Dingjia technology serves as a technical consultant to provide database training and technical support services for colleagues and customers. Source of this article: original contribution * produced by aikesheng o ...

Posted by squalls_dreams on Sun, 08 May 2022 03:53:20 +0300

[Share]CPU Control in Embedded Linux System

content author test environment introduce tool CPU isolation Process CPU Affinity interrupt CPU affinity Process priority other author Hank FU Hanjie Fu hankf@xilinx.com test environment Xilinx ZCU106 board Xilinx VCU TRD2020.1 introduce In an embedded Linux system, Linux directly manages all CPU s. By default, the goal of the system is t ...

Posted by jokobe on Sun, 08 May 2022 03:25:20 +0300

Fundamentals of C programming under Linux

Vi: Vi mode: Vi has three modes: command line mode, insert mode and command line mode. The functions of each mode are described in detail below Line introduction. (1) Command line mode: When users edit files with Vi, they initially enter the general mode. In this mode, you can move the cursor up and down to "delete character" or &quot ...

Posted by mu-ziq on Sun, 08 May 2022 02:54:50 +0300

Detailed steps for setting up a cluster

zookeeper cluster construction 1, Cluster planning Install three virtual machines. The IP address and host name are set as follows IP host name Software 192.168.1.66 SQG JDK\zookeeper 192.168.1.2 hadoop1 JDK\zookeeper 192.168.1.3 hadoop2 JDK\zookeeper 2, Environment preparation (the following three virtual machines need to be ope ...

Posted by MentalMonkey on Sat, 07 May 2022 23:48:20 +0300

centos u disk installation and LNMP

1. Preliminary preparation: Download centeos 7.5: https://mirrors.aliyun.com/centos-vault/7.5.1804/isos/x86_64/ Download floppy disk pass, the registration code is Baidu. download putty, winscp 2. Operation steps: u disk production: Open UltraISO tool File -> Open Select your ISO file. Startup item Select to write the hard disk image ...

Posted by AliceG on Sat, 07 May 2022 16:36:06 +0300