KagazQalam
Technology / January 01, 2045

Ansible

Ansible is an open-source Continuous Deployment, Configuration Management, & Orchestration. This tool aims to provide large productivity gains to a wide variety of automation challenges and is powerful enough to automate complex multi-tier IT application environments. Playbooks in Ansible are written in YAML format. It is a human-readable data serialization language that is commonly used for configuration files. It can also be used in many applications where data is being stored.


Ansible is an open-source Continuous Deployment, Configuration Management, & Orchestration. This tool aims to provide large productivity gains to a wide variety of automation challenges and is powerful enough to automate complex multi-tier IT application environments. Playbooks in Ansible are written in YAML format. It is a human-readable data serialization language that is commonly used for configuration files. It can also be used in many applications where data is being stored.

Structure

-  playbook.yml
-  hosts
-  roles/
        nginx/                                #  Role  name                                             
            tasks/                            #  Task  directory
                main.yml
                nginx.yml                                                                         
            handlers/
            files/                            #  'copy'  will  refer  to  this
                nginx.conf                           
            templates/                    #  'template'  will  refer  to  this
                ssh.conf.j2                   
            meta/                              #  Role  dependencies  here
            vars/
                main.yml
            defaults/
                main.yml

Connection

ssh-copy-id -i root@10.7.0.1 # Copy SSH Key
ansible –m ping <host> # Check a specific host
ansible -m ping all # Check all hosts

Inventory

/etc/ansible/hosts # Default location
ansible-playbook -i hosts main.yml # Custom location

# Basic format of host file:

[web-servers] # A group
10.7.0.1 # A host
10.7.0.2 # Another host

Basic Commands

touch main.yml # Create a playbook
ansible-playbook main.yml # Run the playbook
ansible-galaxy init <role-name> # Create a new role # Playbook Format:

--- # Start with this
- hosts: web-servers # Host group
vars: # Variables
http_port: 80 # Key and value pair

roles: # Roles lists
- install
- configure

remote_user: root # Remote user for commands

tasks: # Tasks
- name: Install apache # Name of task
apt: # Ansible module
name: httpd # Name of package
notify: # Notify the handler
- restart apache # Handler name

handlers: # Handlers
- name: restart apache # Name of handle
service: # Handle's job
name: httpd
state: restarted

Command Module

command: bash script.sh # Simple command

expect: # Responses required
command: bash script.sh
responses:
Question:
- response1
- response2

Archives Module

archive: # Compress file
path: # Source files
- /path/to/foo
- /path/to/goo
format: gz OR zip OR bz2 # Custom format
dest: /path/to/fogo.tgz # Destination

unarchive:
src: foo.tgz # Source file or url
dest: /var/lib/foo
remote_src: yes # Source file already exist

Files Module

copy: # Copy files to remote host
src: /srv/myfiles/foo.conf
dest: /etc/foo.conf
owner: foo
group: foo
mode: '0644'
backup: yes # Backup original file

fetch: # Copy files from remote host
src: /tmp/somefile
dest: /tmp/fetched

file: # Change file properties
path: /etc/foo.conf
owner: foo
group: foo
mode: '0644'

file: # Change directory properties
path: /etc/some_directory
state: directory # Type of file
recurse: yes # Recursively change properties
owner: foo
group: foo
mode: '0755'

file: # Delelete file or directory
path: /etc/foo
state: absent

find: # Find files on remote host
paths: /tmp # Location to find
age: 2d # File Age (2d, 4w)
recurse: yes # Recursively change properties
size: 1m # Size of file
patterns: # Patterns of file
- '*.old'
- '*.log'

lineinfile: # Replace a line
path: /etc/selinux/config
regexp: '^SELINUX=' # Regex pattern
line: SELINUX=enforcing # Line after changes

Templates Module

template: # Jinja format templates
src: file.j2 # Source jinja file
dest: /etc/file.conf # Target file
owner: bin
group: wheel
mode: '0644'
backup: yes # Backup original file

Add {{ var_name }} in file.j2 to replace values dynamically

HTTP Module

get_url: # Get file from URL
url: http://example.com/path/file.conf
dest: /etc/foo.conf
mode: '0440'
checksum: sha256:basdasdasd # Checksum (sha256, md5)

uri: # Access a URL
url: http://www.example.com
return_content: yes # Verify status 200

Package Management Module

npm: # NPM package install
name: coffee-script # Package name
path: /app/location # Destination location
version: '1.6.1' # Package version
state: latest # absent # Update/Delete exisiting package

npm: # Install from package.json
path: /app/location # Location of package.json

pip: # PIP package install
name: # Package names list
- django
- bottle==1.01
executable: pip3.3 # pip or pip3
requirements: requirements.txt # Fix dependencies from file

Repository Module

apt:
update_cache: yes # apt update
autoclean: yes # apt clean
autoremove: yes # apt autoremove

apt: # APT install command
pkg: # Package names list
- nodejs
- curl
state: present # absent | latest # Install, delete or update
update_cache: yes # Update repository
force: no # Force action

apt: # Install from a .deb package
deb: "https://url/package.deb" # URL or location of deb

apt_repository: # Add a new repository
repo: "deb https://url main" # Repo URL
state: present # absent # Install or delete

yum: # YUM install
name: # Package name list
- httpd
- curl
state: present # latest | absent # Install, update, delete

yum: # RPM file install
name: package.rpm # Local file or URL
state: present # latest | absent # Install, update, delete

yum_repository: # Add a yum repository
name: epel # Repo name
baseurl: https://URL # Repo URL
gpgcheck: no # Verification

apk: # Alpine package install
name: foo # Package name
update_cache: yes # Update repository

System Module

service: # Service commands
name: httpd # Service name
state: started # stopped | restarted # Start, stop, restart
enabled: yes # Service enable

user: # Create User
name: john # Username
group: admin, wheel # Groups
shell: /bin/bash # Default shell
expires: 1422403387 # Expiration date

reboot: # Reboot the machine
reboot_timeout: 3600 # Timeout

Github Module

- git: # Clone a git repo
repo: git://github.com/ # Repo URL
dest: /srv/checkout # Destination location
version: master # Branch

Debug Playbooks

- debug: # Print custom messages
msg: "Hello {{ var }}"

Follow Us

12,345 Fans 12,345 Followers
12,345 Connects 12,345 Followers
12,345 Subscribers 12,345 Followers

Newsletter

Aliqu justo et labore at eirmod justo sea erat diam dolor diam vero kasd

Sit eirmod nonumy kasd eirmod

Tranding

Technology / January 01, 2045
Lorem ipsum dolor sit amet consec adipis elit
Technology / January 01, 2045
Lorem ipsum dolor sit amet consec adipis elit
Technology / January 01, 2045
Lorem ipsum dolor sit amet consec adipis elit
Technology / January 01, 2045
Lorem ipsum dolor sit amet consec adipis elit
Technology / January 01, 2045
Lorem ipsum dolor sit amet consec adipis elit

KagazQalam

Volup amet magna clita tempor. Tempor sea eos vero ipsum. Lorem lorem sit sed elitr sed kasd et

Categories

Politics Business Corporate Sports Health Education Science Technology Foods Entertainment Travel Lifestyle

Tags

Politics Business Corporate Sports Health Education Science Technology Foods Entertainment Travel Lifestyle

Quick Links

About Advertise Privacy & policy Terms & conditions Contact

© KAGAZ QALAM. All Rights Reserved. Designed by Umam