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Title Description: Algorithm design: Multi process: Here we mainly use the system call fork: fork is a system call to create a process under Linux The process calling fork is the main process, and a call will produce a child process.fork features: call twice and return: The difference between the main process and the child process starts wi ...

1. Principles and Features (Functions) 1. Main features Multidimensional data model (Time series consists of metric name and labels for k/v)Flexible Query Language ( PromQL)Distributed storage without dependencies; Single-node servers are autonomousUse http protocol, pull mode to pull data, easy to understandMonitoring objectives, which can b ...

Introduction to Shell programming Symbols of references: Single quotation mark: WYSIWYG Double quotation marks: parse variables (treat the input as a whole) Backquotes: parsing commands No quotation marks: similar to double quotation marks Why learn Shell programming Shell will be widely used in Linux system, and we also need to ...

catalogue Experimental environment Experimental environment: 1,win10,vmwrokstation Virtual machine; 2,k8s Cluster: 3 sets centos7.6 1810 Virtual machine, 1 master node,2 individual node node k8s version: v1.22.2 containerd://1.5.5 Experimental software Link: https://pan.baidu.com/s/1CAC9j5yU-sg-aDfLPYVflg?pwd=b3jp Extraction co ...

summary Producer consumer model: a typical design pattern, which is a solution designed by people according to typical scenes Application scenario: it is applied to the scenario where a large amount of data is generated and processed Specific implementation: there are multiple producer and consumer threads to produce and process a huge amoun ...

introduction This article introduces three special permissions of Linux file system: suid, sgid and sticky. Article catalogue 0 × 1. How to view the default permissions of files created by the current user0 × 2. How to add suid permission to a file0 × 3. How to add sgid permission to a folder0 × 4. How to add sticky p ...

1, Download of parity 1. Open our Linux virtual machine in advance. Then open our folder and create a parity file. Of course, it can also be named after other names, preferably parity.      2. Then enter the PARITY folder, open it in the terminal, and enter the following under the authority of administrator: wget https://re ...

https://blog.csdn.net/u011728480/article/details/78588827 #PS: if you want to reprint, please indicate the source. I own the copyright #PS: This is only "myself" understand, if with your #If the principles conflict, please understand and don't spray Introduction to EC20 EC20 is a 4G module of all Netcom, and provides detailed d ...

1, Install PostgreSQL database on the server 1. yum command installation: Select the system, Version (the version I selected is 12) and so on here. I use the yum command to install here. My command here is: yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-6-x86_64/pgdg-redhat-repo-latest.noarch.rpm yum install postgresql ...

In the High Availability cluster environment, it is generally necessary to use floating IP to achieve high web availability. For the concept of floating IP and why floating IP is needed, please refer to: Floating IP (FLOAT IP) This article mainly talks about the actual operation steps: It can be dual computer or multi computer. The main serv ...