Vagrant - Provisioning multitple VBox-VMs with pre-defined names

Question

I have a bit of trouble provisioning a multi-machine setup from a Vagrantfile.

VM_NAME="node"
IMAGE_NAME="centos/7"

Nodes=3
NodeMEM=4096
NodeCPU=2
NodeGUI=false


(1..Nodes).each do |i|
  Vagrant.configure("2") do |config|
    v_hostname=VM_NAME+"-#{i}"
    config.vm.define "node-#{i}" do |node|
      node.vm.box = IMAGE_NAME
      config.vm.provider "virtualbox" do |vbox|
        vbox.memory = NodeMEM
        vbox.cpus   = NodeCPU
        vbox.gui    = NodeGUI
        vbox.name   = v_hostname
      end

      node.vm.hostname=v_hostname
    end
  end
end

My expectation: the hostname inside the VM (node.vm.hostname) and the VBox machine name are set to identical values: node-1, node-2, node-3

Actual Result: (removed some lines from network settings, guest additions and rsyncing folders)

#> vagrant up
Bringing machine 'node-1' up with 'virtualbox' provider...
Bringing machine 'node-2' up with 'virtualbox' provider...
Bringing machine 'node-3' up with 'virtualbox' provider...
==> node-1: Importing base box 'centos/7'...
==> node-1: Matching MAC address for NAT networking...
==> node-1: Checking if box 'centos/7' version '2004.01' is up to date...
==> node-1: Setting the name of the VM: node-3
==> node-1: Clearing any previously set network interfaces...
[...]
==> node-1: Setting hostname...
[...]
==> node-2: Importing base box 'centos/7'...
==> node-2: Matching MAC address for NAT networking...
==> node-2: Checking if box 'centos/7' version '2004.01' is up to date...
A VirtualBox machine with the name 'node-3' already exists.
Please use another name or delete the machine with the existing
name, and try again.

The hostname inside the VM is correctly set to "node-1" and the node name used by Vagrant as well. It's only the VBox machine name which is not set correctly.

I already tried using different orders (loop inside-out, VBox at the end), removing dashes from the hostname, setting the variables identical to v_hostname but explicitly for vbox_name.

Does anyone have an idea what's wrong here?

Additional information

I added another step to create and mount a secondary disk.

vbox.customize ["createmedium", "disk", "--filename", "/mnt/sdb/VirtualBox/disks/"+v_hostname+"-ceph.vdi", "--size", "10240"]

While the first node was still being provisioned I could see all three disks (one for each node) have alreay been created and the disk of the third node was attached to the first node.

I also tried add "--no-parallel" to "vagrant up" but no luck. I'm not sure why the "vbox.customize" steps are run for all iterations already in the first loop but I think this is the problem here.

score 0 · Accepted Answer · answered Sep 06 '20 at 14:49

I found the problem.

config.vm.provider "virtualbox" do |vbox|

must be changed to

node.vm.provider "virtualbox" do |vbox|

(1..Nodes).each do |i|
  Vagrant.configure("2") do |config|
    v_hostname=VM_NAME+"-#{i}"
    config.vm.define v_hostname do |node|
      node.vm.box = IMAGE_NAME
      node.vm.provider "virtualbox" do |vbox|
        vbox.memory = NodeMEM
        vbox.cpus   = NodeCPU
        vbox.gui    = NodeGUI
        vbox.name   = v_hostname
      end

      node.vm.hostname=v_hostname
    end
  end
end

Vagrant - Provisioning multitple VBox-VMs with pre-defined names

1 Answers1