Automated operation and maintenance tool - ansible detailed explanation

This article is a reprint of the article, the original link https://www.cnblogs.com/keerya/p/7987886.html catalogue Introduction to ansible What is ansible?ansible featuresansible architecture diagramansible task execution ansible task execution modeansible execution processansible command execution processDetailed explanati ...

Posted by allelopath on Thu, 02 Dec 2021 19:05:17 -0800

socket communication programming

socket introduction The "ip address" of the network layer can uniquely identify the host in the network, while the "port" of the transport layer can uniquely identify the application (process) in the host. In this way, triples (ip address, protocol, port) are used The process of the network can be identified, and the proces ...

Posted by dimkasmir on Thu, 02 Dec 2021 11:57:34 -0800

Hadoop2.6.0+Linux Centos7+idea environment: MapReduce second degree friend recommendation case

Catalog 1. Problem Description 2. Writing Code + Packaging Project in intellij idea 3. Upload jar package to Linux in xftp 4. Preparing input data + Running jar package + Viewing input results in hadoop 1. Problem Description With MapReduce, for each user, A suggests 10 users who are not friends with A, but have the most common friends w ...

Posted by ADLE on Thu, 02 Dec 2021 11:32:51 -0800

Dockerfile writing, deployment and optimization

catalogue introduction 1, Dockerfile layering principle 1. Preliminary understanding of mirroring 2. Docker image segmentation (based on AUFS) 3. Technology involved 4. AUFS and overlay / overlay 2 (docker later) 2, Written by Dockerfile 1. dockerfile operation instruction 2. Write dockerfile file to deploy nginx 3, Optimize DOCKERFIL ...

Posted by jdimino on Wed, 01 Dec 2021 20:10:18 -0800

SeetaFace2 Android platform compilation

SeetaFace2 Android platform compilation Project address: https://github.com/seetafaceengine/SeetaFace2 SeetaFace2 face recognition engine includes three core modules required to build a full-automatic face recognition system, namely: face detection module FaceDetector, face key point positioning module facelandmark and face feature extraction ...

Posted by iskawt on Wed, 01 Dec 2021 15:02:49 -0800

Big data learning tutorial SD version - Part 1 [shell]

1.shell Shell command line interpreter, Linux scripting language 1.1 variables Common system variables: $HOME $PWD $SHELL $USERStrict space rules There must be no spaces on either side of the equal signThere are spaces in the variable. You can wrap it with "" or ()There must be a space between expr operatorsThere should b ...

Posted by bumbar on Wed, 01 Dec 2021 13:51:37 -0800

Linux exercise short answer

Chapter I Q1 brief introduction to the application field of Linux system Linux The server; Embedded Linux System; Software development platform; Desktop applications Q2 briefly describe the characteristics of Linux system Openness, multi-user, multi task, good user interface, equipment independence, rich network functions, reliable s ...

Posted by hykc on Wed, 01 Dec 2021 13:06:09 -0800

File hiding attribute setting, chatr, Lsattr detailed explanation, file hiding attribute usage, demonstration

chattr setting file properties Syntax options Chatr is used to modify the hidden permission attribute of the file system; For files and directories, in addition to setting normal and special permissions, you can also use some hidden attributes of files and directories. [root@zaishu ~]# Chatr [+ - =] [properties] file or directory name ...

Posted by quintus on Wed, 01 Dec 2021 07:31:04 -0800

Basic usage of docker

1, What is docker Containers in docker: lxc --> libcontainer --> runC 2, OCI & OCF OCI Open Container-initiative Led by the Linux foundation, it was founded in June 2015It aims to develop an open industrial standard around container format and runtimecontains two specifications the Runtime Specification(runtime-spec)the ...

Posted by alsouno on Wed, 01 Dec 2021 07:27:54 -0800

pinctrl subsystem initializes RGB lamp

Catalogue of series articles Detailed explanation of Linux character device driver Detailed explanation of Linux character device driver II (using device driver model) Detailed explanation of Linux character device driver III (using class) Detailed explanation of Linux character device driver IV (using its own xbus driver bus) Detailed exp ...

Posted by docpepper on Wed, 01 Dec 2021 01:42:32 -0800