ansible 教程

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1. 总体介绍

总体介绍

Installation

从Github获取Ansible

需要安装些什么

选择哪一个版本

对管理主机的要求

对托管节点的要求

从源码运行

通过Yum安装最新发布版本

通过Apt (Ubuntu)安装最新发布版本

11 通过 Portage (Gentoo)安装最新发布版本

通过 pkg (FreeBSD)安装最新发布版本

在Mac OSX 上安装最新发布版本

通过 OpenCSW 安装最新发布版本(Solaris)

通过 Pacman 安装最新发布版本(Arch Linux)

通过 Pip 安装最新发布版本

发行版的Tarball

新手上路

前言

你的第一条命令

公钥认证

Inventory文件

主机与组1

主机与组2

主机变量

组的变量

把一个组作为另一个组的子成员

分文件定义 Host 和 Group 变量

分文件定义 Host 和 Group 变量-实例

Inventory 参数的说明

Inventory 参数的说明-实例

动态 Inventory

Cobbler 外部 Inventory 脚本

Cobbler 外部 Inventory 脚本-实例

AWS EC2 外部 inventory 脚本1

AWS EC2 外部 inventory 脚本2

其它 inventory 脚本

使用多个 inventory 源

动态组作为静态组的子组

Patterns

Introduction To Ad-Hoc Commands

Parallelism and Shell Commands1

Parallelism and Shell Commands2

File Transfer

Managing Packages

Users and Groups

Deploying From Source Control

Managing Services

Time Limited Background Operations

Gathering Facts

Ansible的配置文件

获取最新配置文件

环境配置

配置文件不同段详解

通用默认段

action_plugins

ansible_managed

ask_pass

ask_sudo_pass

bin_ansible_callbacks

callback_plugins

command_warnings

connection_plugins

deprecation_warnings

display_skipped_hosts

error_on_undefined_vars

executable

filter_plugins

force_color

force_handlers

forks

gathering

hash_behaviour

hostfile

host_key_checking

inventory

jinja2_extension

library

log_path

lookup_plugins

module_lang

module_name

nocolor

nocows

pattern

poll_interval

private_key_file

remote_port

remote_tmp

remote_user

roles_path

sudo_exe

sudo_flags

sudo_user

system_warnings

timeout

transport

98 vars_plugins

vault_password_file

Paramiko Specific Settings

record_host_keys

OpenSSH Specific Settings

ssh_args

control_path

scp_if_ssh

pipelining

Accelerated Mode Settings

accelerate_port

accelerate_timeout

accelerate_connect_timeout

accelerate_daemon_timeout

accelerate_multi_key

Windows Support

windows下的运行方式

安装管理机

Inventory

Windows System Prep

Getting to PowerShell 3.0 or higher

可用的windows模块

开发者:支持的模块及工作原理

提醒:控制机必须是Linux系统

Windows Facts

Windows Playbook Examples

Windows Contributions

2. Playbooks

Playbooks

Playbooks 简介

Playbook 语言的示例

主机与用户

Tasks 列表

Action Shorthand

Handlers:在发生改变时执行的操作

执行一个 playbook

Ansible-Pull(拉取配置而非推送配置)

提示与技巧

Playbook 角色(Roles) 和 Include 语句

Playbook 角色(Roles) 和 Include 语句-简介

Task Include Files And Encouraging Reuse

Task Include Files And Encouraging Reuse-实例1

Task Include Files And Encouraging Reuse-实例2

Roles1

Roles2

角色默认变量(Role Default Variables)

角色依赖(Role Dependencies)

在 Roles 中嵌入模块

Ansible Galaxy

Variables

合法的变量名

在Inventory中定义变量

在playbook中定义变量

在文件和role中定义变量

使用变量:关于Jinja2

Jinja2过滤器

YAML陷阱

使用Facts获取的信息

关闭Facts

本地Facts(Facts.d)

Fact缓存

注册变量

访问复杂变量数据

魔法变量,以及如何访问其它主机的信息

变量文件分割

命令行中传递变量

变量的优先级:我该在什么地方放置变量1

变量的优先级:我该在什么地方放置变量2

变量的优先级:我该在什么地方放置变量3

条件选择

When 语句

加载客户事件

在roles 和 includes 上面应用’when’语句

条件导入

基于变量选择文件和模版

注册变量

循环

标准循环

嵌套循环

对哈希表使用循环

对文件列表使用循环

对并行数据集使用循环

对子元素使用循环

对整数序列使用循环

57 随机选择

Do-Until循环.

查找第一个匹配的文件

迭代程序的执行结果

使用索引循环列表

循环配置文件

扁平化列表

循环中使用注册器

自定义迭代

最佳实践

Content Organization

Directory Layout.

Use Dynamic Inventory With Clouds

How to Differentiate Stage vs Production

Group And Host Variables

Top Level Playbooks Are Separated By Role

Task And Handler Organization For A Role

What This Organization Enables (Examples)

Deployment vs Configuration Organization

Stage vs Production

Rolling Updates

Always Mention The State

Group By Roles

Operating System and Distribution Variance

Bundling Ansible Modules With Playbooks

Whitespace and Comments

Always Name Tasks

Keep It Simple

Version Control

7. Ansible Tower

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4分钟

39 For Those About To Test, We Salute You

At this point, you should be ready to begin testing!

If the PR is a bug-fix pull request, the first things to do are to run the suite of unit and integration tests, to ensure the pull request does not break current functionality:

# Unit Tests
make tests

# Integration Tests
cd test/integration
make

Note

Ansible does provide integration tests for cloud-based modules as well, however we do not recommend using them for some users due to the associated costs from the cloud providers. As such, typically it’s better to run specific parts of the integration battery and skip these tests.

Integration tests aren’t the end all beat all - in many cases what is fixed might not HAVE a test, so determining if it works means checking the functionality of the system and making sure it does what it said it would do.

Pull requests for bug-fixes should reference the bug issue number they are fixing.

We encourage users to provide playbook examples for bugs that show how to reproduce the error, and these playbooks should be used to verify the bugfix does resolve the issue if available. You may wish to also do your own review to poke the corners of the change.

Since some reproducers can be quite involved, you might wish to create a testing directory with the issue # as a sub- directory to keep things organized:

mkdir -p testing/XXXX # where XXXX is again the issue # for the original issue or PR
cd testing/XXXX
<create files or git clone example playbook repo>

While it should go without saying, be sure to read any playbooks before you run them. VMs help with running untrusted content greatly, though a playbook could still do something to your computing resources that you’d rather not like.

Once the files are in place, you can run the provided playbook (if there is one) to test the functionality:

ansible-playbook -vvv playbook_name.yml

If there’s not a playbook, you may have to copy and paste playbook snippets or run a ad-hoc command that was pasted in.

Our issue template also included sections for “Expected Output” and “Actual Output”, which should be used to gauge the output from the provided examples.

If the pull request resolves the issue, please leave a comment on the pull request, showing the following information:

  • “Works for me!”
  • The output from ansible –version.

In some cases, you may wish to share playbook output from the test run as well.

Example!:

Works for me!  Tested on `Ansible 1.7.1`.  I verified this on CentOS 6.5 and also Ubuntu 14.04.

If the PR does not resolve the issue, or if you see any failures from the unit/integration tests, just include that output instead:

This doesn't work for me.

When I ran this my toaster started making loud noises!

Output from the toaster looked like this:   BLARG
   StrackTrace
   RRRARRGGG

When you are done testing a feature branch, you can remove it with the following command:

git branch -D someuser-feature_branch_name

We understand some users may be inexperienced with git, or other aspects of the above procedure, so feel free to stop by ansible-devel list for questions and we’d be happy to help answer them.