what is ansible playbook

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 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

}};{ 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

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

-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.

multiple Ansible objects, different inventory different playbook Create multi-process, execute program Precautions The Ansible api2.0 is much more complex and more flexible than the 1.0. This needs to read the original code, need to spend a little more time and patience Before using mu

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-pu

, you should updateIt (ie. yum update GMP).Play [web] ********************************************************************Gathering FACTS ***************************************************************OK: [10.154.252.47]BlogTASK: [lineinfile dest=/root/b regexp= ' Nima ' line= "xiaorui.cc" Owner=root group=root mode=0644] * *BlogChanged: [10.154.252.47] => {"Backup": "", "changed": True, "MSG": "Line added"}Play Recap ********************************************************************10.154.252

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

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 upg

I. Description of the EnvironmentServer with Ansible installed: 192.168.13.45Test environment server: 192.168.13.49/home/app/api-tomcat/webapps/api.war a new version of the war package location for the test environmentProduction Environment server: 192.168.13.51/home/app/api-tomcat/webapps/api.war for production Environment War package location/HOME/APP/API-TOMCAT/WEBAPPS/API for production environment Project location/home/app/tomcat.bak/ api/webapps

/tasks/install.yml-name:install mysql Shell:/bin/sh/r oot/mysql_install.shCreate an include file[Email protected] roles]# Cat/etc/ansible/roles/mysql_install/tasks/main.yml-include:copy.yml-include: Install.ymlThe final playbook structure is[Email protected] roles]# tree/etc/ansible/roles/mysql_install//etc/