The popular BlackBerry fans and the tablet PlayBook favored by RIM have recently encountered a "deep dive" dilemma: the launch soon announced the recall of thousands of hosts, because users had trouble working on the screen while loading protocols, this step is a required program for user registration and cannot be completed, which means that the PlayBook in hand is useless. At present, RIM is stepping up i
Playbook is a list of one or more "play"The main function of play is to dress up a pre-set host as a role defined in advance through the task in ansible. Fundamentally, the so-called task is nothing more than a call to Ansible's module. By organizing multiple play in one playbook, you can connect them to run in a pre-programmed mechanism.Playbook use Yaml language to write each ansible
Ansible is a lightweight batch configuration management tool for agentless, because of the relatively late (13) development based on ansible less relevant documents, so here are some small experiments, combined with the existing data and source code, explore the Ansible two times development.The contents of the essay are divided into three parts.
Playbook Edit Execution
Python invokes API execution pl
Can PlayBook run Android programs? The dust has finally landed!
RIM announced yesterday that in order to bring applications into the PlayBook ecosystem, it will provide developers with tools to enable PlayBook to support Android applications. RIM is preparing to launch the software tool "App Players" to enable BlackBerry's Java and Android 2.3 programs to run si
If you have a BlackBerryPlayBook tablet and develop it in Ubuntu, you can do this by connecting to the NDK. But how can you transfer files under Ubuntu12.04LTS? Haha! Just a few simple steps to operate the files in PlayBook like a USB flash drive in windows! Premise: the same vro connected to the computer and PlayBook.
If you have a BlackBerry PlayBook tablet an
Meet a demand today when using Ansible-playbook after executing a script, according to the content returned by the script to determine whether to continue execution or break execution, query official website found using Register Register can be used to achieve the recording script output, using when+ Fail module to determine whether to proceed or break down, here is a simple example: Ansible service on 172.16.133.128, first executes a script, the scri
Automated operations Tools: ansible
Application scenario for multi-process call Ansible API: Application System Check
An application system may have a cluster of 20-50 servers, and a preliminary system-level check can be checked with a unified playbook, such as (Df-h command). But deep into the application layer, there are some personalized applications, such as 2 HTTP servers, 20 middleware servers in 4 database servers, and so on, che
Brief introductionPlaybook is a very simple configuration management and multi-host deployment system. Can be used as a foundation for deploying complex applications.The playbook can be customized and can be executed in an orderly manner with the specified sequence of operations, supporting both synchronous and asynchronous methods.Playbook is described in YAML format, which enables deployment of multiple host applications and performs specific instru
There are many ways to define and reference variables in Ansible playbook, which are tested in the local environment and collated as follows. test Environment:
Using your own Mac notebook to install Ansible as the control server, the VMware Fusion virtual machine runs on a CENTOS7 virtual machine (192.168.243.146) as a remote controlled host tested with Playbook as follows:
Cat Test.yml
---
-hosts:test
re
0. IntroductionPlaybooks is the language of Ansible management configuration, deployment applications, and orchestration, and you can use playbooks to describe the policies you want to perform on the remote host or the set of steps that you perform.Similar to a set of task sets, defining information such as projects, organizational structures, profiles, and so on, the task is to organize the things you want to do in one step and the whole playbookOfficial Demo information: Https://github.com/ans
The previous article introduced the installation configuration and example of Ansible: http://msiyuetian.blog.51cto.com/8637744/1748143The following article mainly introduces Ansible's playbook, playbook is equivalent to the module or function written into the configuration file, and then we execute the configuration file to achieve the purpose of remote operation and maintenance automation.First, the simpl
If you have a big playbook and you just want to run one of those tasks, tags is your best choice. How to use it?first, the most common form of use:Take the official example:
Tasks:-yum:name={{Item}} state=installed with_items:-httpd-memcached Tags:- PACKAGES-TEMPLATE:SRC=TEMPLATES/SRC.J2 dest=/etc/foo.conf Tags:-configuration At this point if you want to run only one of these tasks, this Run when you specify tags can ansible-
Perform a playbookThe above sections already have a preliminary understanding of Playbook's syntax, so how do you run a playbook?This is very simple, here's an example of running playbook in parallel, the level of parallelism is 10Ansible-playbook Playbook.yml-f 10Ansible-pull (pull configuration rather than push configuration)Can we turn the ansible architecture
Ansible playbook component, ansibleplaybook
Core elements of playbook:
Tasks: Task
Variables: Variable
Templates: Template
Handlers: Processor
Roles: Role
Organization format: YAML (also known as a Markup Language)
Syntax: (the list is represented by a horizontal bar. Key-value pairs are separated by colons, and other key-value pairs can be nested in key-value pairs)
Example: name: tom
Age: 21
Gender: Male
Playbook-Introduction: Playbooks is a mode different from the ansible command line execution mode, and its functions are more powerful and flexible. In simple terms, playbook is a very simple configuration management and multi-host deployment system. Unlike any existing mode, it can be used as a suitable basis for deploying complex applications. Playbook can be c
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./Configure \-- Prefix =/usr/local/nginx \-- User = nginx \-- Group = nginx \With-http_stub_status_module
Make make install
Ln-S/usr/local/nginx/sbin/nginx/usr/local/sbin // create a soft connection for the system to identify nginx commandsScript Note: -- with-http_stub_status_module // support status statistics
2. Create nginx boot scriptVI/etc/init. d/nginx#! /Bin/bash# Chkconfig:-99 20# Description: nginx Service Control scriptProg = "/usr/local/nginx/sbin/nginx"Pidf = "/usr/local/nginx/lo
Ansible series (5): PlaybookBefore playbook
After the first two modules, I believe that anyone who uses shell will discover the power of ansible.
Here we will introduce playbook, a truly powerful place. Let you get rid of the difficulty of executing shell.Definition of Playbook
The definition of Playbook is difficult t
After Ubuntu is installed on the real machine, the PlayBook NDK 2.0 Environment is installed on it. The installation process is not detailed. If you need to learn the detailed steps, refer to my friend berryreload's tutorial, the link is as follows:Http://www.bkjia.com/ OS /201203/122981.htmlAs mentioned by berryreload, after the PlayBook NDK 2.0 Environment is installed according to the standard process, t
need to send the key to the production environment host2. Upgrade and RollbackUpgradeAnsible-playbook/home/app/api.yml-vRolling backAnsible-playbook/home/app/api-rollback.yml-vAnsible-playbook followed by the Yml file path written earlier,-V is to display detailed execution information3. AttentionIf you perform an upgrade and rollback of the yml file in Jenkins,
Include:In a large complex architecture, the first problem is the growing playbook file size, a large playbook difficult to understand and maintain, the end method is to use include, your plays break down into different segments and then include them in the other plays . Different segments are categorized according to different purposes. All are included in the main plays . There are four types of inclusion
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