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Several core addresses https://mirrors.tuna.tsinghua.edu.cn/help/git-repo/ Tsinghua Git Repo image help https://mirrors.tuna.tsinghua.edu.cn/help/AOSP/ Tsinghua Android image help Address of some relevant information My environment is brand new ubuntu18 Download overall steps 1. Install repo 2. Install the global repo configuration file ...

introduction One of Alibaba's core distributed technologies is RocketMq. As a distributed message middleware, it has been baptized by Taobao's double 11 and far exceeds activeMq in function and performance 1. You should know that RocketMQ native supports distributed, while ActiveMQ native has a single point. 2.RocketMQ can guarantee s ...

return and job management of SaltStack return of SaltStack component The return component can be understood as the SaltStack system stores or returns the data returned by Minion to other programs. It supports a variety of storage methods, such as MySQL, MongoDB, Redis, Memcache, etc. through return, we can record each operation of SaltSta ...

dpkg -- deb series software package management system #List the software packages in the current system dpkg -l #Install package dpkg -i packageName.deb #Uninstall package (keep profile) dpkg -r packageName #Uninstall package (delete profile) dpkg -P packageName #Lists the contents of the specified installed packages dpkg -L packageName #Repor ...

Common modules of saltstack 1. Introduction to saltstack module Module is one of the components that SaltStack contacts most in daily use. It is used to manage object operations. It is also the entrance for SaltStack to manage by pushing. For example, our daily simple tasks such as executing commands, viewing package installation and serv ...

1. Preparation before construction 1.1 ssh password free login configuration method Prepare at least three host servers. For example, my host servers are: Server nameIPServer master81.68.172.91Server slave1121.43.177.90Server slave2114.132.222.63 First, generate the secret key on the master server. The command to generate the secret key ...

Linux device driver learning notes - character device driver - Note.1 LINUX DEVICE DRIVERS，3RD EDITION 1, Character drive [1] Primary and secondary equipment No Character devices are accessed by names in the file system. Device files with names called file systems Specify that they are located in the / dev directory. You can view thei ...

Cookie (saved on client) What is a Cookie: Cookie(s) is actually a small text file. The information content exists in the form of key value. A cookie is like a membership card of a mall. When a user visits the website through the browser, the website server can save some necessary information in the cookie and return it to the browser through ...

Users, groups, and permissions Content overview Security model of LinuxUser and group related filesUser and group management commandsUnderstand and set file permissionsDefault permissionsspecial competenciesFile access control permissions 1. Linux Security Model Resource allocation: Authentication: authentication to verify the user's i ...

Server program specification Linux server programs generally run as background processes (daemons). It does not control the terminal, so it will not accidentally receive user input. The parent process of the daemon is usually the init process (PID 1).A professional log system is required for the debugging and maintenance of the server. L ...