DevOps

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr
My name is Thanassis Zografos
I sysadmin @imgzine
I own a company; Ultraweb4U
Earned a living using VB6 (do not say a word)
and i love ... ansible
Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Developers develop

Status quo

Sys Admins administer

Users use

Managers manage

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things change...watch out !!

DevOps is coming to an 

IT {{ schema }}

near you!!

coming soon...

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

DevOps

is a term for a group of concepts that,

while not all new,

have catalyzed into a movement

and is rapidly spreading throughout the technical community.

They say about it:

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Born of the need to improve IT service delivery agility,

the DevOps movement

emphasizes communication, collaboration and integration between

software developers

and

IT operations

what it does

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

DevOps

is a series of

actions, changes, procedures, and tools

that make

operations and development engineers

participate together

in the entire service lifecycle,

from design

through the development process 

to production support.

in other words

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

When developers begin

to think of infrastructure as part of their application

 

When developers choose stability and performance as normal procedures.

 

When sysadmins work tightly with developers to understand modern application methodologies

 

When procedures are enforced in order to  communicate

 

in other words

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

When tools help the cause and

do not overrun it

so what ?

When tools are used 

then...

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

You are a step

"May the force be with you"

closer into 

understanding and practising

DevOps

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

What DevOps is not

It’s Not NoOps

It’s Not (Just) Tools

It’s Not (Just) Culture

It’s Not (Just) Devs and Ops

It’s Not (Just) A Job Title

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Next steps

Ok I see that

but

what can the tools do for me ?

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

Orchestration

Configuration Management

Security & Compliance

App Deployment

Continuous Delivery

Provisioning

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

Provisioning

use the cloud or use baremetal

have the ability to change providers

deliver infrastructure fast and safely

allow this not to bottleneck your pipeline

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

Orchestration

running a “/usr/sbin/reboot” command

against tens, hundreds, or thousands of servers

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

Configuration Management

manage your environment uniformely

describe your infra and build it

do that fast

do it again

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

Security & Compliance

enforce security across the board

implement changes securely

never miss upgrades

be compliant

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

App Deployment

repeat deployments

reliable deployments

simple methods

easy to maintain

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Things we do for love...apps

Continuous Delivery

update often

zero downtime

multi step, push based methodology

gain control and keep it that way

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

The TOOLS

Ansible

Puppet

Chef

SaltStack

CFEngine

Scripting !! (really ?)

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

The TOOLS too

Nagios

ELK

New Relic 

Jenkins

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

The TOOLS more too

Vagrant

Docker

Terraform 

Mist.io

Rundeck

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

ooooh no ... more tools

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

The TOOLS more too

It is not about the tools...

Focus on why and how..

Use best practices.

Try this at home

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

The fight of the century

Ansible vs Puppet vs Chef vs Salt vs ...

There can not be only one !!

I like Ansible ...

you must choose what you like

choose the one that fits your project best

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Ansible 

SSH based, no clients no servers

Easy learning, YAML syntax

Playbook structure simple

Register variables for later tasks

No pulling ... just push

Performance upgrades in later versions

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Ansible 

Simple Playbook structure

--- 

 - hosts: all 

   tasks: 

     - shell: echo "hello world" 

helloworld.yml

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Ansible 

Simple Playbook structure

ansible-playbook -i "localhost" -c local helloworld.yml

execute it like this

Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Ansible 

PLAY [all] ********* 

GATHERING FACTS ********* 
ok: [localhost] 

TASK: [shell echo "hello world"] ********* changed: [localhost] 

PLAY RECAP ********* 
localhost : ok=2 changed=1 unreachable=0 failed=0 
Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

Ansible 

Even simpler Ansible script

ansible localhost -m shell -a 'echo hello world'
Thanassis Zografos | tzografos@gmail.com | DevStaff.gr
Thanassis Zografos | tzografos@gmail.com | DevStaff.gr

DevOps

By Thanassis Zografos

DevOps

from concept to movement to implementation

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