writing ansible modules

Background information:There are a lot of facts in ansible, but not enough in many cases.For example, Ansible has no ansible_private_ipv4_address such a facts, which is used to save a private network IP address.And we just need such a facts, because we have a lot of server's default network card is not eth0, some bond0,eth1,em0,em1, and the public network IP address and private network IP address also does

Ansible can be automatically managed using the command line, and Ansible's command-line management tools are supported by a series of modules and parameters, and we can view the module's help information through the Ansible-doc tool. This post will detail the functions and operations of the Ansible module.ansible Comma

https://galaxy.ansible.com/site, and we can visually understand them like Yum under CentOS, Pip or easy_install under Python.Ansible-vault is mainly used in the configuration file contains sensitive information, do not want him to be seen, vault can help you encrypt/decrypt this configuration file, is a high-level usage. Mainly for playbooks for example, when it comes to configuring passwords or other variables, it can be encrypted by this directive, so that what we see through cat is a cipher

--syntax-checkPlaybook:jdk.ymlDisplays the task in the specified playbook.[Email protected] ansible]# Ansible-playbook jdk.yml--list-taskPlaybook:jdk.ymlPlay #1 (test): TestTAGS: []Tasksjdk:jdk-8u101-linux-x64.tar.gzTAGS: []Jdk:tar jdk-8u101-linux-x64.tar.gzTAGS: []Jdk:java_profile_1TAGS: []Jdk:java_profile_2TAGS: []Jdk:java profile_3TAGS: []Jdk:java_4TAGS: []View hosts for Playbook[Email protected]

Recently encountered a problemSeport is isn't a legal parameter in an Ansible task or handlerThe reason is that my local Ansible Extra Modules is obsolete and needs to be updated. But the official document of Ansible only gives such a word.There should be no need to install this repo separately as it should being inclu

. Get_url ModuleGet_url: Enables the controlled end to download the specified URL, supports sha256sum checksumCases:' url=http://www.baidu.com dest=/tmp/index.html mode=0440 force=yes ' # controlled end Download Baidu home page to/tmp/index.html5. Software operation module (yum, APT)Yum/apt:linux Platform software package management operationsCases:' Name=curl state=latest ' # The controlled end uses Yum to install the latest Curl ' Pkg=curl state=latest ' # The controlled end uses apt to instal

the Fstab file:650) this.width=650; "src=" http://s2.51cto.com/wyfs02/M00/7F/A6/wKiom1cnYgvg-cBaAAMArzXu1nI867.jpg "title=" 21.jpg "alt=" Wkiom1cnygvg-cbaaamarzxu1ni867.jpg "/>View Fstab File650) this.width=650; "src=" http://s5.51cto.com/wyfs02/M01/7F/A4/wKioL1cnY1SBPDI2AAL4YAWVk2c112.jpg "title=" 22.jpg "alt=" Wkiol1cny1sbpdi2aal4yawvk2c112.jpg "/>Mount usage options, use ansible-doc-s mount to see more methods. Let's do it first. Go to sleep.This

Nodejs self-study. jsfunction Hello () {Console.log ("Hello World");}function S () {Console.log ("This is a EW");}function Add (A, b) {return a+b;}Exports.hello = hello;//Left out interfaceEXPORTS.S = s;Exports.add = add;Test.jsLoading modulesvar app = require ("./nodejs self-study");//./indicates the current directory, you can also fill in the "./nodejs self-study. js"App.hello ();App.s ();Console.log (App.add (1,3));Node Test.js in the terminalResults:Hello WorldThis is a EW4Examples of Nodejs

Code for writing kernel driver modulesThe required header files typically involved in the driver module:Specification of the entry function for the drive module:int __init entry_name (void){/*xxx*/return 0;}Module_init (Entry_name);Specification for export functions of drive modules:void __exit exit_name (void){}Module_exit (Exit_name);Declaration of the information of the module:Module_license ("GPL"); This line must be written in the module, the fol

Getting started writing ZF2 modules During ZendCon this year, we released 2.0.0beta1 of Zend Framework. the key story in the release is the creation of a new MVC layer, and to sweeten the story, the addition of a modular application architecture. "Modular? What's that mean? "For ZF2," modular "means that your application is built of one or more" modules ". in a l

of The ECMAScript standard being developed will officially support "classes" and "modules", but it will take a long time to make it practical .) The Javascript community has made a lot of efforts to achieve the "module" effect in the existing runtime environment. This article summarizes the current best practices of "Javascript Modular programming" and explains how to put it into practice. Although this is not a preliminary tutorial, you only need to

Javascript Modular programming (1): Writing modules Body: As websites gradually become "Internet applications", Javascript code embedded into webpages is becoming increasingly large and complex. extjs is a good example. Web pages are becoming more and more like desktop programs, requiring a division of labor and collaboration between teams, schedule management, unit testing, and so on... developers hav

"modules", but it will take a long time to make it practical .) The Javascript community has made a lot of efforts to achieve the "module" effect in the existing runtime environment. This article summarizes the current best practices of "Javascript Modular programming" and explains how to put it into practice. Although this is not a preliminary tutorial, you only need to understand the basic syntax of Javascript. I. Original WritingA module is a

.M1 (); However, such writing exposes all module members and the internal state can be externally rewritten. For example, external code can directly change the value of an internal counter. Module1._count = 5; Third, immediately execute function writing You can achieve the purpose of not exposing private members by using the Execute function now (immediately-invoked function Expression,iif

practice. Although this is not a preliminary tutorial, you only need to understand the basic syntax of Javascript. I. Original Writing A module is a set of methods to implement specific functions. Simply put different functions (and variables that record state) together, it is a module. Function m1 (){//...} Function m2 (){//...} The above functions m1 () and m2 () form a module. You can call it directly. The disadvantage of this approach is obvious

Tags: c + + Linux kernel code exit writing ROC process information modules processThe module code is as follows//main.c#include Makefile Writingobj-m+=main.o #指定生成的模块all: make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) modulesclean: make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) clean其中:m

When you write a page, you often need to use generic modules, such as the header section, the footer section, and so on.The front end of the project is using the Themeleaf template engine, and the following is a brief introduction to using Themeleaf to write the header generic module:1. Common part: header2.htmlPrimarily using the Th:gragment property tagDOCTYPE HTML>HTMLLang= "ZH-CN"xmlns:th= "http://www.thymeleaf.org">Headth:fragment= "Common_header

Environment: Ubuntu 8.04Kernel version: 2.6.32.59-debug1. Writing Documents HELLO.C#include #include /* Write kernel driver must load this header file, the role is to dynamically load the module into the kernel, commonly used macro definitions such as Module_licesence (), Module_author (), and so on in this file */#include Module_license ("Dual BSD/GPL"); Is the statement that must be selected, which is the license permission for the module, and if no

Python is powerful, but existing modules may not meet the people's growing material and cultural needs, and sometimes need to write extension modules to improve.There are a number of possible options: SWIG, Weave, cTYPES, BOOST ...Boost is undoubtedly one of the fastest development scenarios. The following describes how the simplest C + + HelloWorld program becomes a python module.1. Install Python, BoostHe