Hokay looks like they want me to get a Vagrant file.
git clone https://github.com/coreos/coreos-vagrant.git
cd coreos-vagrant
Let's take a peek at what we have.
$ ls -la
total 80
drwxr-xr-x 11 jahnke staff 374 Feb 23 20:25 ./
drwxr-xr-x 3 jahnke staff 102 Feb 23 20:25 ../
drwxr-xr-x 13 jahnke staff 442 Feb 24 20:27 .git/
-rw-r--r-- 1 jahnke staff 117 Feb 23 20:25 .gitattributes
-rw-r--r-- 1 jahnke staff 35 Feb 23 20:25 .gitignore
-rw-r--r-- 1 jahnke staff 2448 Feb 23 20:25 CONTRIBUTING.md
-rw-r--r-- 1 jahnke staff 104 Feb 23 20:25 MAINTAINERS
-rw-r--r-- 1 jahnke staff 4240 Feb 23 20:25 README.md
-rw-r--r-- 1 jahnke staff 4355 Feb 23 20:25 Vagrantfile
-rw-r--r-- 1 jahnke staff 2353 Feb 23 20:25 config.rb.sample
-rw-r--r-- 1 jahnke staff 722 Feb 23 20:25 user-data.sample
Interesting... There is a Vagrantfile and 2 'other' files. So lets peek in the Vagrant file first. Whoa, it is 135 lines long. Holy crap let me dig into this.
require 'fileutils'
Vagrant.require_version ">= 1.6.0"
CLOUD_CONFIG_PATH = File.join(File.dirname(__FILE__), "user-data")
CONFIG = File.join(File.dirname(__FILE__), "config.rb")
# Defaults for config options defined in CONFIG
$num_instances = 1
$instance_name_prefix = "core"
$update_channel = "alpha"
$enable_serial_logging = false
$share_home = false
$vm_gui = false
$vm_memory = 1024
$vm_cpus = 1
$shared_folders = {}
Okay next bit.
# Attempt to apply the deprecated environment variable NUM_INSTANCES to
# $num_instances while allowing config.rb to override it
if ENV["NUM_INSTANCES"].to_i > 0 && ENV["NUM_INSTANCES"]
$num_instances = ENV["NUM_INSTANCES"].to_i
end
if File.exist?(CONFIG)
require CONFIG
end
# Use old vb_xxx config variables when set
def vm_gui
$vb_gui.nil? ? $vm_gui : $vb_gui
end
def vm_memory
$vb_memory.nil? ? $vm_memory : $vb_memory
end
def vm_cpus
$vb_cpus.nil? ? $vm_cpus : $vb_cpus
end
Vagrant.configure("2") do |config|
# always use Vagrants insecure key
config.ssh.insert_key = false
config.vm.box = "coreos-%s" % $update_channel
config.vm.box_version = ">= 308.0.1"
config.vm.box_url = "http://%s.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json" % $update_channel
["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v, override|
override.vm.box_url = "http://%s.release.core-os.net/amd64-usr/current/coreos_production_vagrant_vmware_fusion.json" % $update_channel
end
end
config.vm.provider :virtualbox do |v|
# On VirtualBox, we don't have guest additions or a functional vboxsf
# in CoreOS, so tell Vagrant that so it can be smarter.
v.check_guest_additions = false
v.functional_vboxsf = false
end
# plugin conflict
if Vagrant.has_plugin?("vagrant-vbguest") then
config.vbguest.auto_update = false
end
This is looking pretty normal for a Vagrant file (well the ones I have seen at any rate.) We are setting the box name and some other info that will be used to grab the correct version of the box. Then some specific settings for both vmware as well as virtual box. And finally disable a conflicting plugin. Since I don't run vmware on my box, and I looked at the vaguest plugin and it seemed kind of out of date and not at all interesting to me I won't be using it either. Both of these segments can go.This next bit was a little interesting.
(1..$num_instances).each do |i|
config.vm.define vm_name = "%s-%02d" % [$instance_name_prefix, i] do |config|
config.vm.hostname = vm_name
What appears to be happening here is the Vagrant file is making different config sets for each machine. In the config.rb file you can define how many you want to start. And this is creating a config for each and naming it by adding a 2 digit number to the end of the name. Sweet...
if $enable_serial_logging
logdir = File.join(File.dirname(__FILE__), "log")
FileUtils.mkdir_p(logdir)
serialFile = File.join(logdir, "%s-serial.txt" % vm_name)
FileUtils.touch(serialFile)
["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v, override|
v.vmx["serial0.present"] = "TRUE"
v.vmx["serial0.fileType"] = "file"
v.vmx["serial0.fileName"] = serialFile
v.vmx["serial0.tryNoRxLoss"] = "FALSE"
end
end
config.vm.provider :virtualbox do |vb, override|
vb.customize ["modifyvm", :id, "--uart1", "0x3F8", "4"]
vb.customize ["modifyvm", :id, "--uartmode1", serialFile]
end
end
This bit turns on the serial logging for the VM. Once again I don't use VM Ware, I can't use it for AWS and it looks like it is expensive for virtual box. I could probably do without any of it. But I will leave just the non VM ware bits in place.
if $expose_docker_tcp
config.vm.network "forwarded_port", guest: 2375, host: ($expose_docker_tcp + i - 1), auto_correct: true
end
This isn't useful for AWS either, but it will work for VirtualBox.
["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v|
v.gui = vm_gui
v.vmx['memsize'] = vm_memory
v.vmx['numvcpus'] = vm_cpus
end
end
config.vm.provider :virtualbox do |vb|
vb.gui = vm_gui
vb.memory = vm_memory
vb.cpus = vm_cpus
end
So remember the bits up top I was thinking about getting rid of? They will have to be fixed here. Adding a $ in front of vm_ will fix them. And get rid of the vmware bits.
ip = "172.17.8.#{i+100}"
config.vm.network :private_network, ip: ip
Since we are starting more than one box, this will increment the VirtualBox ip addresses, AWS will of course ignore this totally.Finally
# Uncomment below to enable NFS for sharing the host machine into the coreos-vagrant VM.
#config.vm.synced_folder ".", "/home/core/share", id: "core", :nfs => true, :mount_options => ['nolock,vers=3,udp']
$shared_folders.each_with_index do |(host_folder, guest_folder), index|
config.vm.synced_folder host_folder.to_s, guest_folder.to_s, id: "core-share%02d" % index, nfs: true, mount_options: ['nolock,vers=3,udp']
end
if $share_home
config.vm.synced_folder ENV['HOME'], ENV['HOME'], id: "home", :nfs => true, :mount_options => ['nolock,vers=3,udp']
end
if File.exist?(CLOUD_CONFIG_PATH)
config.vm.provision :file, :source => "#{CLOUD_CONFIG_PATH}", :destination => "/tmp/vagrantfile-user-data"
config.vm.provision :shell, :inline => "mv /tmp/vagrantfile-user-data /var/lib/coreos-vagrant/", :privileged => true
end
end
end
end
The rest of this is to deal with sharing the file systems between VirtualBox and the host system. I don't actually use this right now. But I will leave it in place incase I find a compelling reason to use it.If you remember earlier I needed to set some values to make AWS work correctly. As it turns out the config bits are a little bit tricky if I set the config.vm.box in one place it won't be able to be reset in a different place. And both the VirtualBox and AWS use different boxes. So some reading up on how the Ruby do iterator was working led me to the following answer.
config.vm.provider :virtualbox do |v, override|
override.vm.box = "coreos-%s" % $update_channel
override.vm.box_version = ">= 308.0.1"
override.vm.box_url = "http://%s.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json" % $update_channel
# On VirtualBox, we don't have guest additions or a functional vboxsf
# in CoreOS, so tell Vagrant that so it can be smarter.
v.check_guest_additions = false
v.functional_vboxsf = false
end
config.vm.provider :aws do |aws, override|
aws.access_key_id = ENV['AWS_ACCESS_KEY_ID']
aws.secret_access_key = ENV['AWS_SECRET_ACCESS_KEY']
aws.keypair_name = "jahnke-gsg-keypair"
aws.ami = "ami-8097d4e8"
aws.region = "us-east-1"
aws.instance_type = "t1.micro"
override.vm.box = "dummy"
override.ssh.username = "core"
override.ssh.private_key_path = "/Users/jahnke/ec2-keys/jahnke-gsg-keypair.pem"
end
This way neither config sets it directly they set via the override. And so there won't be a conflict. I statically chose the stable coreOS I need to add a conditional here to choose the right AMI based on the update_channel var. And instead of using ubuntu as the base identity CoreOS uses core. This small addition now lets me start with either VirtualBox or AWS.
require 'fileutils'
Vagrant.require_version ">= 1.6.0"
CLOUD_CONFIG_PATH = File.join(File.dirname(__FILE__), "vagrant-user-data")
CONFIG = File.join(File.dirname(__FILE__), "vagrant-config.rb")
# Defaults for config options defined in CONFIG
$num_instances = 1
$instance_name_prefix = "core"
$update_channel = "alpha"
$enable_serial_logging = false
$share_home = false
$vm_gui = false
$vm_memory = 1024
$vm_cpus = 1
$shared_folders = {}
if File.exist?(CONFIG)
require CONFIG
end
Vagrant.configure("2") do |config|
# always use Vagrants insecure key
config.ssh.insert_key = false
config.vm.provider :virtualbox do |v, override|
override.vm.box = "coreos-%s" % $update_channel
override.vm.box_version = ">= 308.0.1"
override.vm.box_url = "http://%s.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json" % $update_channel
# On VirtualBox, we don't have guest additions or a functional vboxsf
# in CoreOS, so tell Vagrant that so it can be smarter.
v.check_guest_additions = false
v.functional_vboxsf = false
end
config.vm.provider :aws do |aws, override|
aws.access_key_id = ENV['AWS_ACCESS_KEY_ID']
aws.secret_access_key = ENV['AWS_SECRET_ACCESS_KEY']
aws.keypair_name = "jahnke-gsg-keypair"
aws.ami = "ami-8097d4e8"
aws.region = "us-east-1"
aws.instance_type = "t1.micro"
override.vm.box = "dummy"
override.ssh.username = "core"
override.ssh.private_key_path = "/Users/jahnke/ec2-keys/jahnke-gsg-keypair.pem"
end
(1..$num_instances).each do |i|
config.vm.define vm_name = "%s-%02d" % [$instance_name_prefix, i] do |config|
config.vm.hostname = vm_name
if $enable_serial_logging
logdir = File.join(File.dirname(__FILE__), "log")
FileUtils.mkdir_p(logdir)
serialFile = File.join(logdir, "%s-serial.txt" % vm_name)
FileUtils.touch(serialFile)
config.vm.provider :virtualbox do |vb, override|
vb.customize ["modifyvm", :id, "--uart1", "0x3F8", "4"]
vb.customize ["modifyvm", :id, "--uartmode1", serialFile]
end
end
if $expose_docker_tcp
config.vm.network "forwarded_port", guest: 2375, host: ($expose_docker_tcp + i - 1), auto_correct: true
end
ip = "172.17.8.#{i+100}"
config.vm.network :private_network, ip: ip
config.vm.provider :virtualbox do |vb|
vb.gui = $vm_gui
vb.memory = $vm_memory
vb.cpus = $vm_cpus
end
# Uncomment below to enable NFS for sharing the host machine into the coreos-vagrant VM.
#config.vm.synced_folder ".", "/home/core/share", id: "core", :nfs => true, :mount_options => ['nolock,vers=3,udp']
$shared_folders.each_with_index do |(host_folder, guest_folder), index|
config.vm.synced_folder host_folder.to_s, guest_folder.to_s, id: "core-share%02d" % index, nfs: true, mount_options: ['nolock,vers=3,udp']
end
if $share_home
config.vm.synced_folder ENV['HOME'], ENV['HOME'], id: "home", :nfs => true, :mount_options => ['nolock,vers=3,udp']
end
if File.exist?(CLOUD_CONFIG_PATH)
config.vm.provision :file, :source => "#{CLOUD_CONFIG_PATH}", :destination => "/tmp/vagrantfile-user-data"
config.vm.provision :shell, :inline => "mv /tmp/vagrantfile-user-data /var/lib/coreos-vagrant/", :privileged => true
end
end
end
end
