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libselinux is a very important dependency package in the Linux system. Many software rely on this package, such as OpenSSL, OpenSSL devel, systemd and so on. If this package is missing, it will cause disastrous consequences. For example, the basic commands such as ls, cp and mv cannot be used, and the yum command cannot be used normally. Howeve ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tutorials/84Article address: http://www.showmeai.tech/article-detail/176Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the sourceintroduction2020, since covid-19 has changed the world and affects everyone's life, this case comb ...

Upgrade and rollback of Pod When a service in the cluster needs to be upgraded, we need to stop all pods related to the service, then download the new version image and create a new Pod. If the cluster scale is relatively large, this work becomes a challenge, and the way of stopping all and then gradually upgrading will lead to the unava ...

Observer mode of 23 design modes reference material Java design patterns: comprehensive analysis of 23 design patterns (super detailed)Han Shunping's Java design pattern (illustration + framework source code analysis) Qin Xiaobo's Zen of design pattern Please correct any mistakes and omissions below 1, Introduction definition It refer ...

Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications. 1 Overview 1.1 basic concepts 1.1.1 Topic By classifying messages through Topic mechanism, we can think that each Topic is a queue ...

ppp-2.4.9 source code analysis PPP agreement workflow When a user dials in to an ISP, a physical connection is established from the user's personal computer to the ISP. At this time, the user's personal computer sends a series of LCP packets (encapsulated into multiple PPP frames) to the ISP to establish the LCP connection. These packets ...

There are many built-in methods of data types. You can view the built-in methods of data types through the built-in reminder of programming software. In python, it is viewed through the period character Built in methods for shaping and floating point data Type conversion   type conversion refers to the method of converting other different ...

1, Docker introduction Docker is an open source application container engine, which is developed based on go language and follows Apache 2.0 0 protocol open source It is an open source tool for running applications in Linux container Is a lightweight "virtual machine"“ Docker's container technology can easily create a li ...

preface This competition is a data analysis novice learner development competition organized by Tianchi data platform. The content of the competition is used car price prediction. The data is provided by Tianchi platform. When I first saw this topic, my first reaction was to use the linear regression method. Of course, this is the simp ...

SpringSecurity Related concepts Principal [user or device using the system or user logging in remotely from other systems, etc. in short, whoever uses the system is the principal.] Authentication [the authority management system confirms the identity of an entity and allows the entity to enter the system. In short, it means that the &quo ...