Ansible learning-ansible

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 version is too low, install python-simplejson module)

The simplest ansible command:

Ansible-I/etc/ansible/hosts all-m command-a 'date'-u prod

Parameters:

-I specifies the location of the hosts file. hosts is a yaml file, and all indicates all groups in the hosts file.

-M specifies the ansible module. The command here indicates the ansible command module. There are many other modules, such as shell.

-A: Specify the args parameter.

-U indicates the user (because it is based on SSH authentication)

Common ansible commands:

Ansible # execute simple temporary commands (ad-hoc commands)

Ansible-playbook # execute playbook, playbook is a yaml file (as the main function of the Configuration Management Tool)

Ansible-doc # query ansible module documentation

Example:

---
-Hosts: cmdb
User: prod
Sudo: True
Tasks:
-Name: show the date
Shell: date
Y: show1
Handlers:
-Name: show1
Shell: ls

Run ansible-playbook user. yml

User. yml File

Hosts: Specifies the device group.

User: Specifies the ssh user

Sudo: whether to use the sudo permission

Tasks: keyword indicates the execution action

Name: name an action.

Yum: ansible specified Module