Lh01_ansible and its common modules 01

Ansible and its common modules 01

Directory:

1) Characteristics of ansible

2) Ansible Installation

3) ansible Configuration Add Management Host

4) Configure SSH-based Key management

5) How to view module Help

6) ansible Command Application Basics

7) ansible Common modules

Ansible Core Components:

Ansible Core

Host Iventory

Core moduies

Custom Modules

Playbooks (YAML,JINJIA2)

Connection Plugins

1) Characteristics of ansible:

Based on the Python language implementation, three key modules by Paramiko,pyyaml and JINJA2

Simple deployment, agentless

SSH protocol is used by default;

(1) Based on key authentication;

(2) Specify the account number and password in the inventory file;

Master-Slave Mode:

MASTER:ANSIBLE,SSH Client

Slave:ssh Server

Support for custom modules: support for various programming languages

Support Playbook

Complete various "Tasks" based on "modules"

2) Ansible Installation

Installation depends on the Epel source:

Yum install epel-release Yum Info ansibleyum Install ansible-y

Configuration file:/etc/ansible/ansible.cfg

Inventory:/etc/ansible/hosts

3) ansible Configuration Add Management Host

1. Configuring managed Hosts

[[email protected] ~]# cd/etc/ansible/[[email protected] ansible]# lsansible.cfg hosts Roles[[email protected] ansible] # CP hosts{,.bak}# VI hosts[websrvs]192.168.31.212192.168.31.213[dbsrvs]192.168.31.214

4) Configure SSH-based Key management

(1) Perform the following on the management host:

Ssh-keygen-t rsa# ssh-copy-id-i/root/.ssh/id_rsa.pub [email protected]# ssh-copy-id-i/root/.ssh/id_rsa.pub [Email Pro tected]# ssh-copy-id-i/root/.ssh/id_rsa.pub [email protected]

(2) Test all host synchronization time:

# SSH [email protected] ' date ' # SSH [email protected] ' ntpdate pool.ntp.org ' # SSH [email protected] ' ntpdate pool.ntp.org ' # SSH [email protected] ' ntpdate pool.ntp.org '

5) How to view module Help

Ansible-doc-l

Ansible-doc-s module_name

6) ansible Command Application Basics

Syntax: Ansible

[-M module_name] [-A args]

-F Forks: Number of concurrent threads started;

-M Module_name: module to use

-A args: module-specific parameters;

7) ansible Common modules

# # Command: Commands module, default module, for remote execution of commands;

such as: ansible all-a ' Date '

# ansible websrvs-m command-a ' Date ' # ansible dbsrvs-m command-a ' Date ' # ansible all-m command-a ' Date ' # #运用所有主机

# # Cron: Adding a mobile scheduled task

State

Present: Installation

Absent: Remove

Added: # ansible websrvs-m cron-a ' minute= "*/10" job= "/bin/echo Hello" name= "test cron" ' Remove: # ansible websrvs-m cron-a ' min Ute= "*/10" job= "/bin/echo Hello" name= "test cron" state=absent "

# # User: Add removal user

Name=: Indicates the user name created

Add User # Ansible all-m user-a ' name= "user1" ' Remove user # ansible all-m user-a ' name= ' user1 ' state=absent '

# # Group: Adding a move Group

# ansible websrvs-m group-a ' name=mysql gid=306 system=yes ' # ansible websrvs-m user-a ' Name=mysql uid=306 system=yes g Roup=mysql '

# Copy: Copy files

src=: Define local source file path

dest=: Define the remote target absolute path

Content=: Instead of src=, it is used to generate the content of the target file directly with the information specified here;

# ansible all-m copy-a ' src=/etc/fstab dest=/tmp/fstab.ansible owner=root mode=640 ' # ansible all-m copy-a ' content= ' he Llo ansible\nhi magedu "Dest=/tmp/test.ansible"

# # File: Setting files Properties

Path=: Specifies the file path, which can be replaced by using name or dest;

To create a symbolic link to a file:

Src=: Indicates the source file

Path=: Specify symbolic Link file path

# ansible all-m file-a ' owner=mysql group=mysql mode=644 path=/tmp/fstab.ansible ' Create symbolic Link: # ansible all-m file-a ' path=/ Tmp/fstab.link src=/tmp/fstab.ansible State=link '

# # Ping: Test whether the specified host can connect;

# ansible All-m Ping

# # Service: Specifies the operating state;

Enabled=: Whether the boot automatically start, the value is true or false;

Name=: Service Name

State=: State, value has started,stopped,restarted;

# ansible websrvs-m service-a ' enabled=true name=httpd state=started ' # ansible websrvs-a ' service httpd status ' # Ansibl E websrvs-a ' chkconfig--list httpd '

# # Shell: Running commands on a remote host

In particular, the use of the pipeline and other functions of complex commands;

# ansible all-m user-a ' name=user1 ' # ansible all-m shell-a ' echo mageedu | passwd--stdin user1 '

# # Script: Copy the local script to the remote host and run it;

Note: To specify a script with a relative path

[Email protected] ~]# cat/tmp/test.sh #!/bin/bashecho "Hello ansible from Script" >/tmp/script.ansibleuseradd user2# Ansible all-m script-a "/tmp/test.sh"

# # Yum: Install package

Name=: Indicates the package to be installed, you can bring the version number;

state=:p resent,latest means installation, absent means unloading;

# ansible all-m yum-a "name=zsh" # ansible all-m yum-a "Name=zsh state=absent"

# # Setup: Collecting Facts for remote hosts

Each managed node reports its host-related information, such as operating system version, IP address, etc. to the remote Ansible host before receiving and running the management command;

# ansible ALL-M Setup

Lh01_ansible and its common modules 01