Vagrant allows developers to create and manage virtual development environments. It provides a standardized way to configure, provision, and share Virtual Machines across different environments. The document discusses how to install and configure Vagrant by selecting a hypervisor, downloading Vagrant, and editing the Vagrantfile to define VM boxes, providers, networks, shared folders, provisioning, and SSH configurations. Vagrant aims to bring sanity to developers, operators, and designers by enabling them to work on consistent environments and avoid issues with "works on my machine" bugs.

1. Vagrant 의 활용
전인환 (treetory@gmail.com)

2. Vagrant 란?
● What is vagrant?

3. Usefulness of Vagrant
➔ For Developers
Say goodbye to "works on my machine"
bugs.
➔ For Operators
stop juggling SSH prompts to various
machines, and start using Vagrant to
bring sanity to your life.
➔ For Designers
No more bothering other developers to
help you fix your environment so you can
test designs.

4. Vagrant 도 일종의
협업도구라고 보면 됩니다.

5. Vagrant 설치
● Hypervisor (provider) 를 선택
● Vagrant downloads page 에서 Vagrant 다운
● 그리고 설치

6. Hypervisor 간의 충돌
➔ VirtualBox VS. KVM
echo ‘blacklist kvm-intel’ >>
/etc/modprobe.d/blacklist.conf
➔ VirtualBox VS. Hyper-V
Disable-WindowsOptionalFeature
-Online -FeatureName
Microsoft-Hyper-V-All
➔ Create the VM using 64-bit OS
enable the VT-D option in BIOS

7. Single Workflow - VagrantFile
● vagrant init

8. config.vm #1 : box
● What is Box?
● HashiCorp’s Vagrant Cloud box
catalog
● config.vm.box (string)
● config.vm.box_check_update (boolean)
● config.vm.box_download_checksum (string)
● config.vm.box_download_checksum_type (string)
● config.vm.box_download_client_cert (string)
config.vm.box_download_ca_cert (string)
config.vm.box_download_ca_path (string)
● config.vm.box_download_insecure (boolean)
● config.vm.box_url (string, array of strings)
● config.vm.box_version (string)

9. config.vm #2 : provider
● What is Provider?
● supported : VirtualBox, Hyper-V,
VMware, Docker and Custom
Provider
config.vm.provider "virtualbox" do |v|
v.gui = true
v.name = "my_vm"
v.default_nic_type = "82543GC"
v.linked_clone = true if
Gem::Version.new(Vagrant::VERSION) >=
Gem::Version.new('1.8.0')
v.customize ["modifyvm", :id,
"--cpuexecutioncap", "50"]
v.memory = 1024
v.cpus = 2
end

10. config.vm #3 : network
● Private or Public
● NAT or Bridge or Host-only
Vagrant.configure("2") do |config|
config.vm.network "private_network", type: "”, ip: "”,
netmask: "”, auto_config: "”, virtualbox__intnet: "”,
nic_type: "”
end
Vagrant.configure("2") do |config|
config.vm.network "public_network", ip: "”,
netmask: "”, auto_config: "”,
use_dhcp_assigned_default_route: "”, bridge: "”,
nic_type: "”
end

11. config.vm #4 :
synced_folder
● Very convenient function
● Share between Host Machine and
Guest Machine
Vagrant.configure("2") do |config|
config.vm.synced_folder “/home”, “/dev”
end
→ Guest Machine
/vagrant

12. config.vm #5 :
provision
● When is occured the
provisioning?
● execute shell script, ansible, chef,
puppet, salt and docker
● Once or Always or Never
Vagrant.configure("2") do |config|
config.vm.provision "shell", inline: "echo hello”, run:
"always”
end
Vagrant.configure("2") do |config|
config.vm.provision "bootstrap", type: "shell”, run:
"never” do |s|
s.inline = “echo hello”
end

13. config.ssh
● ssh configuration
● enough to use as default
● config.ssh.compression (boolean)
● config.ssh.config (string)
● config.ssh.dsa_authentication (boolean)
● config.ssh.export_command_template (string)
● config.ssh.extra_args (array of strings)
● config.ssh.forward_agent (boolean)
● config.ssh.forward_env (array of strings)
● config.ssh.forward_x11 (boolean)
● config.ssh.guest_port (integer)
● config.ssh.host (string)
● config.ssh.insert_key (boolean)
● config.ssh.keep_alive (boolean)
● config.ssh.keys_only (boolean)

14. config.ssh
● ssh configuration
● enough to use as default
● config.ssh.paranoid (boolean)
● config.ssh.password (string)
● config.ssh.port (integer)
● config.ssh.private_key_path (string, array of strings)
● config.ssh.proxy_command (string)
● config.ssh.pty (boolean)
● config.ssh.remote_user (string)
● config.ssh.shell (string)
● config.ssh.sudo_command (string)
● config.ssh.username (string)
● config.ssh.verify_host_key (string, symbol)

15. 이렇게 씁니다.
➔ vagrant init
먼저 VagrantFile 을 생성합니다.
➔ vi VagrantFile
템플릿을 내 상황에 맞게 수정합니다.
➔ vagrant up
그리고 프로비저닝 합니다.
➔ vagrant halt
사용후엔 종료합니다.

16. 감사합니다.
부족한 발표 들어주셔서
정말 감사합니다.