ansible playbook tutorial

Playbook1 Playbook is a list consisting of one or more "play"The main function of 2 play is to dress up a pre-merged host into a role defined in advance by a task in ansible. Fundamentally, the so-called task is nothing more than a module that calls Ansible. Organize multiple play in a single playbook, which allows the

Preface Two previous articles talk about ansible deployment and use of ansible modules respectively. They have an initial understanding of ansible. This article focuses on introducing playbook.For details about ansible deployment, click ansible first: DeploymentAnsible modul

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.

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 operatio

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 pa

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:

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

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 playbookOffi

-RF/opt/nginx.tar.gz // Delete the previous compressed package Vim/etc/ansible/roles/install/tasks/Main. yml Include: Copy. yml Include: Install. yml// Create a total main. yml file under the install role, and call copy. yml and install. yml Vim/etc/ansible/install. yml Hosts: AllRemote_user: RootGather_facts: TrueRoles: Common Install// Create the nginx installation script nginx_install.

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 applica

;#Ansible: TimeSync* * * * */5 */usr/sbin/ntpdate 172.16.0.1 >/dev/nullDelete Crontab[Email protected] ~]# ansible cce-m cron-a ' name= "TimeSync" state= "absent" '6. Use the Fetch module to pull the directory on the remote host to the local[Email protected] ~]# ansible cce-m fetch-a ' Src=/root/cce dest=/root/cce '7. Use the file module to manage files on the re

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 languag

}};{ if Num_cpus = = 2%; { elif Num_cpus = = 40100 0010 0001; { elif Num_cpus >= 800000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000; { Else %0100 0010 0001; { % ENDIF%}worker_flimit_notifile {{max_open_file}};Executive PlaybookFormat:Ansible-playbook playbook.yml (playbook file, customizable name) [parameters]Cases:# Enable 10 concurrent processes number execution

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 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