File mount - Linux folder

1, Overview Folders are often attached to each other between different servers and different operating systems, such as file server or data backup server. Generally speaking, there are four types of Mount: Operating system of the same type a. linux mount linux folder b. windows mount windows folder Different types of operating systems c. linux ...

Posted by Brandito520 on Fri, 31 Dec 2021 11:35:42 +0100

Ros notes -- cartographer installation

1. The address link of the official installation tutorial of cartographer https://google-cartographer-ros.readthedocs.io/en/latest/compilation.html 2. Installation problem record Many problems occurred during the installation according to the official steps, which are recorded here one by one: 2.1 error in running command wstool merge -t src h ...

Posted by f1nutter on Fri, 31 Dec 2021 07:44:59 +0100

Shell overview & writing & executing scripts & numerical calculations | Cloud computing

Case 1: Shell Basic Applications 1.1 Question This case requires familiarity with the features of the Linux Shell environment and focuses on the following: Switch user's Shell environmentPractice command history, command aliasesRedirect Standard Input/Output/Error OutputPipeline Operation Practice Step 1.2 The following steps are req ...

Posted by possiblyB9 on Fri, 31 Dec 2021 05:31:17 +0100

Linux three swordsman -- sed command

effect sed command is a non interactive line text editor, which can edit the file content. By default, one line of content matched in the text file is processed to the mode space each time, and then the following commands are used to operate. After the operation is completed, the content in the mode space will be output to the screen, and then ...

Posted by devil_online on Fri, 31 Dec 2021 05:07:45 +0100

Build encrypted web service https httpd+mod_ssl

Build encrypted web service https httpd+mod_ssl install To implement encryption authentication, this security module is called mod_ssl yum install mod_ssl -y After installation, an SSL is generated under the sub configuration module Conf file Go to view the configuration items in the file vim /etc/httpd/conf.d/ssl.conf Listen 443 ht ...

Posted by cash09 on Fri, 31 Dec 2021 01:39:04 +0100

ubuntu deployment k8s

preface This article describes how to deploy k8s clusters on ubuntu, which can be roughly divided into the following steps: Modify ubuntu configurationInstall dockerInstall kubedm, kubectl, and kubeletInitialize master nodeJoin the slave node to the network If you are unfamiliar with some of the above names, it doesn't matter. They will be ex ...

Posted by ginoitalo on Thu, 30 Dec 2021 22:30:22 +0100

platform driver writing under the device tree

1, Introduction to platform driver under device tree platform driver framework is divided into bus, device and driver. The bus does not need to be managed by driver programmers. This is provided by Linux kernel. When writing drivers, we just need to focus on the specific implementation of devices and drivers. In the Linux kernel without d ...

Posted by whatwhat123 on Thu, 30 Dec 2021 22:01:43 +0100

Redis foundation - master-slave replication

concept Master slave replication refers to copying data from one Redis server to other Redis servers. The former is called master / leader and the latter is called slave / follower. Data replication is unidirectional and can only be from master node to slave node. Master mainly writes, Slave mainly reads. By default, each Redis server ...

Posted by skaforey on Thu, 30 Dec 2021 20:39:25 +0100

Super detailed zabbix5 Version 0 installed!

preface The very important work in operation and maintenance is: monitoring! So what are the advantages and disadvantages of using third-party software, such as Zabbix, Nagios and open Falcon? Advantages: low cost. Disadvantages: it can't be completely customized, which is completely consistent with your company's business. Tip: the ...

Posted by arth on Thu, 30 Dec 2021 17:35:01 +0100

Analysis of directory structure under yocto poky

Yocto consists of many files, directories or subdirectories. Understanding the meaning and role of these files will help us quickly understand the yocto project Core components in poky directory Bitmake directory byd@ubuntu:/media/C/Learn/poky/bitbake$ ls AUTHORS contrib LICENSE README bin doc LICENSE.GPL-2 ...

Posted by chrisdarby on Thu, 30 Dec 2021 17:33:17 +0100