A brief introduction to Ansible

Ansible Introduction:

Ansible is just a framework, does not have the ability to deploy, really has the bulk deployment ability is the ansible template,

The architecture includes:

The connection plug-in connection plugins is responsible for communicating with the monitored side.

Host Inventory: Hosts that specify operations, which are the hosts that define the monitoring within a configuration file

Various module Core Module command Module custom module

Use the plugin to complete log mail and other functions

Playbooks: When a script performs multiple tasks. It is not necessary to have nodes run multiple tasks at once

Some elements in the ansible:

ANSIBLE.CFG: Configuration file

Inventory: library files, defining information about hosts, or host lists, manifest files

Adhoc: Simple Task

Playbook: script, Task orchestration

Task: Tasks

Handlers is called after Handlers:task execution is completed and notify is made (the action performed when the change occurs)

Roles: Role

Facts: factor, obtaining remote host information (Setup)

Notify: When the target host changes, the task execution completes and triggers notify

Ansible Common templates:

Command: Execute Linux command

Shell: Execute shell command

Copy: CP on local object to other host

Ping:ping other hosts are alive

File: Create, delete files, directories

Yum: Installing software

Service: Services Command

Ansible Common commands:

Ansible: Perform some simple and timely tasks

Ansible-playbook: Execute the scripted script

Ansible-doc: View the specific usage of a command.

Perform a part of a playbook

Ansible-playbook-i hosts Site.yml--tags config

Executive Playbook

Ansible-playbook-i hosts Site.yml

To view the specific use of a command:

Ansible-doc Yum

Use of roles:

Create the necessary directories:

MKDIR-PV Roles/zabbix/{tasks,handlers,files,vars,templates,meta,default}

Zabbix is a role name

Task: Contains a main.yml file with commands to execute

Handlers: also contains a main.yml, which is typically a command to restart the server, such as a change in the configuration file to trigger the command inside the handler

Files: A file that requires CP to a remote host

TEMPLATES:CP to the remote host template file, you can use the variable

[Email protected] ansible]# more ROLES/ZABBIX/TASKS/MAIN.YML

-name:create Zabbix config dir

File:path=/etc/zabbix/conf.d/scripts/state=directory Owner=zabbix

-Name:install Zabbix-agentd

Yum:name=zabbix22-agent State=latest

[Email protected] ansible]# more ROLES/ZABBIX/HANDLERS/MAIN.YML

-Name:restart ZABBIX-AGENTD Server

Service:name=zabbix-agentd state=restarted

The complete directory structure is as follows:

[Email protected]er ansible]# Tree

.

├──group_vars

│└──all

├──hosts

├──roles

│└──zabbix

│├──default

│├──files

││├──check_disk_io.sh

││├──check_mysql_status.sh

││├──disk_discovery.sh

││├──userparameter_mysql.conf

││└──userparameter_system.conf

│├──handlers

││└──main.yml

│├──meta

│├──tasks

││└──main.yml

│├──templates

││├──check_mysql_replication.sh

││├──get_mysql_status.sh

││├──get_mysql_variables.sh

││├──get_thread_status.sh

││└──zabbix_agentd.conf

│└──vars

└──site.yml

Catalogue Description:

Group_vars: Variable directory, all file contains the value of a partial variable, there is one between the variable and the variable value: Plus space

[Email protected] ansible]# more Group_vars/all

Dbuser: ' Monitoruser '

DBPWD: ' [email protected][email protected]#] (&) '

These variables are used in the template file.

Hosts: List of hosts, i.e. inventory library files

[[email protected] ansible]# more hosts

[Test]

10.24.16.140

10.46.77.24

Roles: Role Directory

Zabbix: List of roles

SITE.YML: Arranging roles, task portals

[Email protected] ansible]# more SITE.YML

-Name:instal Zabbix Agent

Hosts:test

Roles

-Zabbix

Learning Links:

Ansible Common templates

http://blog.csdn.net/iloveyin/article/details/46982023

Ansible Chinese Manual

http://www.ansible.com.cn/

Ansible Study notes-general operations

http://www.axiaoxin.com/article/167/

How to use roles:

Http://www.tuicool.com/articles/AZVJ3qQ

This article is from the "SQL Server MySQL" blog, so be sure to keep this source http://dwchaoyue.blog.51cto.com/2826417/1826339

A brief introduction to Ansible