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one     ping module ansible web -m ping command result ansible web -m ping 192.168.64.135 | SUCCESS => { "ansible_facts": { "discovered_interpreter_python": "/usr/bin/python" }, "changed": false, "ping": "pong" } 192.168.64.140 | SUCCESS => { "ansible_facts": { "discovered_interpreter_pytho ...

@ Warehouse notes Detailed explanation of data warehouse and data mart: ODS, DW, DWD, DWM, DWS, ADS Project requirements and architecture design of shangsilicon Valley data warehouse Shang Silicon Valley data warehouse: 2 data warehouse layering + dimension modeling Construction of 3 data warehouses in the actual combat of shangsilicon Valley ...

https://zerosun.top/2019/08/12/openstack-deploying-by-OSA/ https://www.bookstack.cn/read/deployopenstackwithpuppet/deployment_tool-osa.md 1. Preparation environment: Three physical machines or virtual machines (CentOS7 system and virtual machine environment are used in this paper) One deploy and two network cards (ens192 and ens224) One cont ...

1, Mental process In Java Concurrent Programming, the synchronized keyword is undoubtedly a frequently asked question. During the interview, many interviewers pay more attention to your understanding of the synchronized keyword and its underlying. If you can answer it, it will undoubtedly add points. The following is what I learned through mys ...

preparation File upload is one of the most common functions in project development. Spring MVC can well support file upload, but MultipartResolver is not installed in the spring MVC context by default, so it cannot handle file upload by default. If you want to use spring's file upload function, you need to configure MultipartResolver in ...

prefaceDataBinding is a framework officially released by Google. As its name suggests, it is data binding. It is an implementation of MVVM mode on Android. It is used to reduce the coupling between layout and logic and make the code logic clearer. Compared with MVP, MVVM actually replaces the Presenter layer with the ViewModel layer. DataBindin ...

Day 4 cycle 1, Loop structure - allows code to be executed repeatedly, code to be written once, and executed multiple times. for loops and while loops 1. For loop: python is completely different from java's for loop Syntax: for variable in sequence: Circulatory body Description: for, in - Keywords Variable - variable name (the variable name ...

1, What is UDP and what are its disadvantages? UDP: user datagram protocol [connectionless protocol] Disadvantages: the safety and reliability of data cannot be guaranteed. Advantages: low consumption and high efficiency   2, Classes and common methods needed to establish network communication program based on UDP UDP based netw ...

Modularization related specifications Modular overview Modularization is to encapsulate a single function into a module (file). Modules are isolated from each other, but internal members can be exposed through specific interfaces or rely on other modulesBenefits of modular development: facilitate code reuse, improve development efficien ...

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