Ansible in 100 Seconds
Summary
TLDRAnsible is an open-source automation tool that allows IT infrastructure management with simple, declarative YAML code. Created by Michael DeHaan in 2012 and later acquired by Red Hat, it's now a popular configuration management tool. Ansible operates using a control node that connects to managed nodes via SSH to automate tasks like server configuration and database provisioning. Playbooks define tasks executed in parallel across machines. With its ecosystem, including Ansible Galaxy for pre-built playbooks and Ansible Vault for secure credential storage, users can efficiently automate infrastructure management on platforms like Linode.
Takeaways
- 🛠️ Ansible is an open-source automation tool used for IT infrastructure management.
- 📅 It was created by Michael DeHaan in 2012 and later acquired by Red Hat.
- 🌟 Ansible is popular for its use of declarative, push-based YAML code.
- 🔧 It's designed to automate Linux servers, increasing efficiency and reducing human error.
- 💻 Ansible uses a control node to manage multiple managed nodes over SSH.
- 📚 Developers write playbooks that contain a series of jobs called plays.
- 🔄 Each play is a set of instructions executed on one or more target hosts in parallel.
- 🔒 Playbooks are idempotent, meaning they won't make changes unless necessary.
- 🌐 A real-world use case is managing Linux servers on platforms like Linode.
- 🔗 Ansible Galaxy offers a vast ecosystem of pre-built playbooks.
- 🔒 Ansible Vault is used to securely store sensitive information like passwords.
Q & A
What is Ansible?
-Ansible is an open-source automation tool used to describe IT infrastructure with simple, declarative code.
Who created Ansible and when?
-Ansible was created by Michael DeHaan in 2012.
Which company acquired Ansible after its creation?
-Red Hat acquired Ansible a few years after its creation.
What type of code does Ansible use?
-Ansible uses declarative, push-based YAML code for automation.
How does Ansible help in reducing human error?
-Ansible allows DevOps teams to automate tasks, which increases efficiency and reduces the likelihood of human error.
What is the role of a control node in Ansible?
-A control node in Ansible is a machine that connects to multiple managed nodes and sends them Ansible modules over SSH to configure the machines.
What is a playbook in Ansible?
-A playbook in Ansible is a file containing a series of jobs called plays, each of which is a set of instructions executed on one or more target hosts.
What is the significance of idempotence in Ansible playbooks?
-Idempotence in Ansible playbooks means that they won't make any changes unless necessary, ensuring that repeated runs are safe and don't cause unintended changes.
How can Ansible be used to manage Linux servers on platforms like Linode?
-Ansible can be used to manage Linux servers on platforms like Linode by provisioning a server as a control node, installing Ansible, and using playbooks to automate server management tasks.
What is Ansible Galaxy and how is it useful?
-Ansible Galaxy is a vast ecosystem of pre-built playbooks that can be accessed and used in Ansible automation tasks.
How can sensitive information be securely managed in Ansible?
-Sensitive information in Ansible can be securely managed using Ansible Vault, which encrypts data so it's not required to be directly in YAML files.
What is a task list in an Ansible playbook and what does it do?
-A task list in an Ansible playbook contains instructions that perform actions. These tasks are executed in order against all machines specified in the playbook.
Outlines
🤖 Introduction to Ansible
This paragraph introduces Ansible as an open-source automation tool created by Michael DeHaan in 2012 and later acquired by Red Hat. It emphasizes Ansible's use of declarative, push-based YAML code for automating Linux servers, which increases efficiency and reduces human error. Ansible operates by designating a control node that connects to managed nodes over SSH and uses Ansible modules to configure machines, update network settings, provision databases, and perform other repetitive tasks. The paragraph also mentions the creation of playbooks, which are series of jobs called plays, each containing instructions executed on target hosts. Ansible's idempotence ensures no unnecessary changes are made. The use case presented involves managing Linux servers on a platform like Linode, starting with setting up a control node, installing Ansible, and using pre-built playbooks from Ansible Galaxy.
Mindmap
Keywords
💡Ansible
💡Declarative code
💡Control node
💡Managed nodes
💡Ansible module
💡Playbooks
💡Idempotent
💡Ansible Galaxy
💡Linode
💡Ansible Vault
💡Inventory file
Highlights
Ansible is an open-source automation tool used for IT infrastructure management.
Created by Michael DeHaan in 2012 and later acquired by Red Hat.
It is a popular configuration management tool.
Ansible uses declarative, push-based YAML code.
It allows DevOps teams to automate Linux servers efficiently.
Ansible reduces the likelihood of human error in server management.
A control node is designated to manage multiple managed nodes.
Ansible modules are sent over SSH to configure machines.
Ansible can handle tasks like updating dependencies and network settings.
Developers write playbooks containing a series of jobs called plays.
Each play is a set of instructions executed on target hosts.
Playbooks are idempotent, ensuring no unnecessary changes are made.
Ansible has a vast ecosystem of pre-built playbooks available on Ansible Galaxy.
Ansible can be used to manage Linux servers on platforms like Linode.
Linode provides an API for server management which can be integrated with Ansible.
Ansible Vault is used for securely storing sensitive information.
Personal access tokens are encrypted for security.
Playbooks are written in YAML files and executed with the Ansible Playbook command.
Ansible automates infrastructure with code, making server management more efficient.
Linode Cloud Computing赞助了这个工具的介绍。
视频结尾感谢观看,并预告下一个视频内容。
Transcripts
ansible in open source automation tool
that can describe your it infrastructure
with simple declarative code it was
created by Michael DeHaan in 2012 then
acquired by Red Hat a few years later
and today is one of the most popular
configuration management tools most
importantly it uses declarative
push-based yaml code that allows devops
teams to easily automate their Linux
servers increasing efficiency while
reducing the likelihood of human error
it works by making at least one machine
a control node it then connects to
multiple manage nodes and sends them an
ansible module over SSH which can
configure that machine's dependencies
update network settings provision
databases or really any job that you
might need to do more than once
developers write playbooks that contain
a series of jobs called plays each play
is a set of instructions that can be
executed on one or more Target hosts it
will execute each task in order against
all machines in parallel in addition A
playbook is item potent which means it
won't actually make any changes unless
it has to in excellent real world use
case for ansible is to manage your Linux
servers on a platform like lenode we
start by provisioning a server running
Ubuntu as the control node then into it
from the terminal from there we can
install ansible on this machine this
machine needs permission to create and
modify other servers so we'll get an
access token for the lenode API and
store it somewhere securely now what's
awesome about ansible is that it has a
massive ecosystem of pre-built playbooks
that can be accessed on ansible Galaxy
installed a collection for lenode using
the ansible Galaxy command from there
it's a good practice to use ansible volt
to store sensitive information like a
password securely so it's not required
to be directly in a yaml file and will
want to encrypt our personal access
token here and now we're ready to write
our first Playbook create a file in the
develop and directory ending in Dot yml
and then create the first play by giving
it a name like create lenode instance
then the host property is a pattern that
defines one or more machines that will
run this play or they can be listed in a
dedicated inventory file next we can
Define reusable variables or point to
files that contain multiple variables
and then we can create a task list that
contains instructions that actually do
something here we're using a fully
qualified collection name of
lenode.cloud.instance which is a special
namespace that tells lenode to create a
new server instance from there we
describe the configuration details like
our API token region disk image and so
on and now all we have to do is run the
ansible Playbook command to create a new
server automatically and that's how you
automate infrastructure with code using
ansible shout out to lenode cloud
computing from Akamai for sponsoring
this awesome tool thanks for watching
and I will see you in the next one
Посмотреть больше похожих видео
Day-15 | Ansible Zero to Hero | #ansible #devops
Getting started with Ansible 13 - Adding Users & Bootstrapping
Day-03 | Write Your First Ansible Playbook | For Absolute Beginners
What is DevOps? Understanding DevOps terms and Tools
Using "loop" versus "with" in Ansible
DE Zoomcamp 1.3.1 - Introduction to Terraform Concepts & GCP Pre-Requisites
5.0 / 5 (0 votes)