DevOps

What is DevOps?

»DevOps is a software development method that stresses communication, collaboration and integration between software developers and IT professionals« - Wikipedia

Application Lifecycle

Develop

Deploy

Maintain

Vagrant

Puppet / Chef

Docker

Capistrano

Consul

Packer

Nagios

Why DevOps?

How does DevOps improve our process?

Reusability
Automation
Faster Deploys

Higher Quality
Error Reduction
Shorter Lifecycles

Vagrant

how cats use enterprise development tools for world domination

What is Vagrant?

Applications need ...

... their own private environment
... certain versions of libraries
... configfiles in place
... other circumstances

Virtual

Development Environment

The Vagrant Approach

git clone

vagrant up

Hands On

git clone https://github.com/doebi/catbook.git

How vagrant works.

base box

Vagrantfile

Provider

vagrant boxes

https://vagrantcloud.com/

$ vagrant box

vagrant box add ubuntu/trusty32

add
list
outdated
remove
repackage
update

Hands On

vagrant box add fhlug/trusty32

http://fhlug.at/~cd/boxes/trusty32/package.box

$ vagrant init

vagrant init ubuntu/trusty32

initialize a Vagrantfile

Hands On

vagrant init fhlug/trusty32

Vagrantfile

config file
ruby
multiple machines

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|

  config.vm.box = "ubuntu/trusty32"

end

$ vagrant up

vagrant up

boot a VM
when run for the first time set up and provision according to Vagrantfile

Hands On

vagrant up

$ vagrant ssh

vagrant ssh

connect to a running VM using ssh

$ vagrant rdp

vagrant rdp

connect to a running Windows-VM using rdp

Hands On

vagrant ssh

now mess with your VM, it's desposable! ;)

just run

vagrant destroy and

vagrant up to restore a new one

Synced Folders

Benefits

use your own IDE/Editor for development
never loose project files in a corrupt VM
integrate files in your usual backup strategy or git

Vagrant.configure("2") do |config|
  # other config here

  config.vm.synced_folder "src/", "/srv/website"
end

Hands On

edit Vagrantfile

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  ...
  
   config.vm.synced_folder "../data", "/vagrant_data"

  ...
end

vagrant up

Provisioning

This is where the magic happens!

Vagrant.configure("2") do |config|
  # ... other configuration

  config.vm.provision "file", source: "~/.gitconfig", destination: ".gitconfig"





end

  config.vm.provision "shell", inline: "echo Hello, World"

  config.vm.provision "shell", path: "script.sh"

  config.vm.provision "shell", path: "https://example.com/provisioner.sh"

Hands On

edit Vagrantfile

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  ...
  
   config.vm.provision "shell", inline: "echo Hello, Vagrant"

  ...
end

vagrant provision

Provisioning

Why not use the same scripts as for deployment in production?

YOU CAN!

Provisioning

Vagrant.configure("2") do |config|

  config.vm.provision "puppet" do |puppet|
    puppet.manifests_path = "my_manifests"
    puppet.manifest_file = "default.pp"
  end









end

  config.vm.provision "chef_client" do |chef|
    chef.chef_server_url = "http://mychefserver.com"
    chef.validation_key_path = "validation.pem"
  end

  config.vm.provision "docker" do |d|
    d.build_image "/vagrant/app"
  end

Hands On

vagrant destroy

git checkout provision

vagrant up

Vagrant.configure("2") do |config|

  config.vm.network "forwarded_port", guest: 80, host: 8080





end

  config.vm.network "private_network", type: "dhcp"

  config.vm.network "public_network", ip: "192.168.0.17"

Networking

Hands On

edit Vagrantfile

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  ...
  
   config.vm.network "forwarded_port", guest: 80, host: 8080

  ...
end

vagrant reload --provision

vagrant share

sicker shit

vagrant connect

connect to a generaly shared vagrant VM to have access to all ports

HTTP sharing

SSH sharing

General Sharing

share a VMs HTTP port on a public address

share a VMs SSH port

share any port

now go and vagrantify your projects!

Thanks

devopsreactions.tumblr.com

thecodinglove.com

securityreactions.tumblr.com