Automatic operation Koriyuki ansible--installation configuration

Ansible advantages over other automated operations tools (Saltstack, puppet):

Ansible is a lightweight framework that enables a variety of functions based on individual modules, which can be developed on demand

Agentless no need to install agent, according to the specific situation to establish a machine

Support Playbook Script

Python language development, do operations are more acceptable language

Other and so on, 100 degrees a large pile, self-Baidu Bar ~

Environment Description:

System Environment centos6.8

Operating Machine 192.168.1.121

Client 192.168.1.122

Basic Installation

Installing GCC for compiling Python source code

Yum Install GCC

Update Python version

CentOS comes with the python2.6 version, and since CentOS is already heavily dependent on Python, updating python2.7 is re-loading a
Download:
wget https://www.python.org/ftp/python/2.7.12/Python-2.7.12.tgz
Compile and install:

tar zxf python-2.7.  A . TGZCD Python-2.7.  A . /Configuremake doinstall

Modify the Python default version

MV /usr/bin/python/usr/bin/python2. 6 Ln -s/usr/local/bin/python2. 7 /usr/bin/python

To prevent Yum from performing exceptions, modify the Python version used by Yum

vi /usr/bin/yum

Modify the file header #!/usr/bin/python to #!/usr/bin/python2.6

Module installation

Setuptools

：
Https://pypi.python.org/pypi/setuptools
Compiling the installation

tar zxf setuptools-27.1. 2. Tar . GZCD setuptools-27.1. 2  Install

Errors that may occur when you install Setuptools
Runtimeerror:compression requires the (missing) zlib module
Workaround:
Installing zlib

Yum Install zlib zlib-devel-y

Enter the Python directory when the installation is complete
Recompile the installation python2.7

CD python-2.7.  A  Make  Make Install

(Do not delete, directly compile the installation, the previously established soft chain is still valid)

Module installation

After the installation is complete, you can install most of the other modules with Easy_install.

Easy_install pycrypto pyyaml jinja2 markupsafe ECDSA Paramiko Simplejson

Problems that may occur when using Easy_install
Error:could not find suitable distribution for requirement.parse (' JINJA2 ')
I can't find the URL, etc information
Workaround:
Installing OpenSSL

Yum Install OpenSSL openssl-devel-y

Recompile installation after installation python2.7 (same as before)

Installing YAML
Download:
Http://pyyaml.org/download/libyaml/yaml-0.1.7.tar.gz
Compile and install:

tar zxf yaml-0.1. 7. Tar . GZCD Yaml-0.1. 7 . /Configuremake doinstall

Installing Ansible

Download:

Http://releases.ansible.com/ansible/ansible-2.1.1.0.tar.gz

TarInstall

or something simpler:

Install ansible

(both modes of installation will automatically select the appropriate latest version, the recommended Pip way, can automatically solve some dependency problems, but Pip installed no ansible.cfg and hosts)

Configure Ansible

SSH Password-free login

Ssh-keygen -t RSA

Return
Copy the ~/.ssh/id_rsa.pub to a different server and execute the following command on the other server

cat id_rsa.pub >>~/. ssh/authorized_keyschmod Authorized_keys

Ansible Configuration

mkdir -p/etc/ansible

Copy the Ansible.cfg and hosts files under Ansible/examples/to/etc/ansible/

Modify the Hosts file
Add the following content

[webserver] 192.168. 1.122

(That is, add 192.168.1.122 host under the Webserver group, you can add multiple hosts under the Webserver group, then you can operate directly on the webserver group)

Simple test

Ansible webserver-m command-a'uptime'

The appearance of green seccess words indicates success

Modules used by-m
-A parameter

Other modules

Ping
Setup
File
Copy
Command
Shell

Wait a minute

Can be tested and used as needed
More Module Reference: Ansible-doc-l

Automatic operation Koriyuki ansible--installation configuration