the release version of the NS1 server. The following example sets a DNS master server named NS1 and calls the template module to set an mast server for each zone:
----Name: Setup DNS serversHosts: allnameserversTasks:-Name: Install bindYum: Name = named state = installed
-Name: Setup slavesHosts: slavenamesservers
Tasks:-Name: Get the Masters IPSet_fact: dns_master = "{{Hostvars. ns1.ansible _ default_00004.address }}"
-Name: Configure bindTemplate:
configuration file
Installation is complete, you can modify the default configuration, generally do not need to modify.
Vi/etc/ansible/ansible.cfg
[Defaults]
# some basic default values ...
#inventory = location of the/etc/ansible/hosts # List (inventory) file
#library =/usr/share/my_m
I. Basic Knowledge:
1. Introduction
Ansible is developed based on Python and combines the advantages of many O M tools to implement features such as batch system configuration, batch program deployment, and batch run commands. Ansible works based on modules and does not support batch deployment.The ansible module is actually deployed in batches, and
me. This is also in line with the principle of Choosing Software.
Some people may be concerned about who is using Ansible. After all, the power of role models is infinite. Puppet is not correct because Google is in use and attracts a lot of attention? As far as I know, the well-known Ansible users include Fedora, Rackspace, and Evernote.
Install Ansible
Ansible @ an efficient configuration management tool-Ansibleconfiguremanagement-translation (12)If you do not have written authorization, do not repeat Chapter 5 custom modules.
External inventoriesIn the first chapter we saw how Ansible needs an inventory file, so that it knowswhere its hosts are and how to access them. Ansi
Do not reprint advanced playbook without written permission
Finding files with variablesAll modules can take variables as part of their arguments by dereferencing themwith {{ and }} . You can use this to load a particular file based on a variable.For example, you might want to select a different config file for NRPE (a Nagioscheck daemon) based on the architecture in use. Here is how that would look:---#1- name: Configure NRPE for the right architecture#2hosts: ansibletest#3user: root#4tasks:#5
module to the managed end through SSH protocol (or Kerberos or LDAP) on the management node. After the execution, the module is automatically deleted. You can use SVN to manage custom modules and orchestrations.
The figure above shows that Ansible consists of five parts:
Ansible: Core Engine
Modules: includes core modules and custom modules of Ansible );
Cor
Ansible is an automated operations tools, based on the development of Python, the collection of many operations tools (puppet, Cfengine, Chef, func, fabric) The advantages of the implementation of batch system configuration, batch program deployment, batch Run command and other functions.Ansible is a module-based capability that does not have the ability to deploy in batches. The real batch deployment is the module that
The answer is no longer installed on the window, the answer is as follows:It ' s back! Take the 2018 Developer Survey today?Join Stack Overflow to learn, share knowledge, and build your career.Email Sign UpOR Sign in withGoogle facebookhow to install ansible to my python at Windowsask Question
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When I tried to the install ansible to my Windows PC, the stuck with fol
No written authorization. Do not reprint Chapter 5 custom Module
Using a moduleNow that we have written our very first module for Ansible, we should give it ago in a playbook. Ansible looks at several places for its modules: first it looks at theplace specified in the library key in its config file ( /etc/ansible/ansible.cfg ),next it will look in the location s
Ansible is based on modularity, with specific modules to complete specific tasksBased on the Python language implementation, implemented by three key modules of Paramiko, Pyyaml and JINJA2Simple deployment, agentless (no client deployment, client management via SSH protocol)Based on master-slave modeSupports custom modules (other programming language-written modules can also be called via Ansible interface)
configuration file
The previous section has been able to successfully run the ansible command, but the more annoying thing is that every command will pop up a warning, look at the warning content that the previous section "3" in the manner of configuring the managed host is obsolete, we need to use the new configuration, that is, configuration files.The order in which ansible read the configuration files s
I. Inventory allocation and in-transit inventory
Inventory allocation is a very common operation in the inventory operation, refinement down, we can divide the inventory allocation as follows:
Type of inventory allocation
Ansible learning-ansible
Ansible technologies (Automated O M tools) are developed based on python.
Installation methods include yum, apt, pip, etc.
For example, pip: pip install ansible
The only requirement of ansible for the client is to have SSH and Python (if the python
ArticleDirectory
Buy after selling
Temporarily estimated warehouse receiving and hongchong
Inventory Overflow
Human error
Software computing error
Avoid human errors
Standard Operation
Reasonable cost estimation to avoid cost exceptions
Adjust manually by price adjustment ticket
Negative inventory is a common exception in inventor
framework.
It mainly includes:
(1) connection plugins: communicates with the monitored end;
(2) host inventory: specifies the host for the operation. it is a host defined in the configuration file;
(3) core modules, command modules, and custom modules of various modules;
(4) logging email and other functions are completed by using the plug-in;
(5) playbook: when the script executes multiple tasks, it is not necessary to allow the node to run multiple
If you do not have written authorization, do not repeat Chapter 4. Use of ansible in large projects
RolesIf your playbooks start expanding beyond what includes can help you solve, or youstart gathering a large number of templates, you may want to use roles. Roles inAnsible allow you to group files together in a defined format. They are essentiallyan extension to includes that handles a few things automatically, and this helps youorganize them insid
custom modules;Connect Plugins: Complete the module functions, including connection plug-ins, mail plugins, etc.;Playbooks: Define Ansible Multi-task configuration file, automatically executed by Ansible;Host Inventory: Defines the list of Ansible management hosts, host pools, host lists;Yum Installation ansibleYum In
-copy-id-i/root/.ssh//id_rsa.pub [email protected]2.3 Defining host and Group rulesAnsible the matching target host is remotely operated by a defined host and group rule (Inventory), the configuration rule file is/etc/ansible/hosts by default, as illustrated below:www.abc.com# define domain name 192.168.1.100# definition ip192.168.1.150:37268# Specify the port number [webserver] # Define grouping 192.168.1
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