Centos7/ private network lost IP

[Gildas Cuisinier]

I've a network issue with a centos7 vagrant box.

When I setup a private network, with fixed IP, this one is well binding first, but get lost after some seconds/minutes.

vagrant up

==> default: Forcing shutdown of VM...

==> default: Destroying VM and associated drives...

==> default: Running cleanup tasks for 'shell' provisioner...

Bringing machine 'default' up with 'virtualbox' provider...

==> default: Importing base box 'sfeirbenelux/centos7'...

==> default: Matching MAC address for NAT networking...

==> default: Checking if box 'sfeirbenelux/centos7' is up to date...

==> default: Setting the name of the VM: poc_docker

==> default: Fixed port collision for 22 => 2222. Now on port 2200.

==> default: Clearing any previously set network interfaces...

==> default: Preparing network interfaces based on configuration...

    default: Adapter 1: nat

    default: Adapter 2: hostonly

==> default: Forwarding ports...

    default: 22 => 2200 (adapter 1)

==> default: Running 'pre-boot' VM customizations...

==> default: Booting VM...

==> default: Waiting for machine to boot. This may take a few minutes...

    default: SSH address: 127.0.0.1:2200

    default: SSH username: vagrant

    default: SSH auth method: private key

    default: Warning: Connection timeout. Retrying...

    default:

    default: Vagrant insecure key detected. Vagrant will automatically replace

    default: this with a newly generated keypair for better security.

    default:

    default: Inserting generated public key within guest...

    default: Removing insecure key from the guest if its present...

    default: Key inserted! Disconnecting and reconnecting using new SSH key...

==> default: Machine booted and ready!

==> default: Checking for guest additions in VM...

    default: The guest additions on this VM do not match the installed version of

    default: VirtualBox! In most cases this is fine, but in rare cases it can

    default: prevent things such as shared folders from working properly. If you see

    default: shared folder errors, please make sure the guest additions within the

    default: virtual machine match the version of VirtualBox you have installed on

    default: your host and reload your VM.

    default:

    default: Guest Additions Version: 5.0.2

    default: VirtualBox Version: 4.3

==> default: Setting hostname...

==> default: Configuring and enabling network interfaces...

==> default: Running provisioner: shell...

    default: Running: inline script

==> default: net.ipv4.ip_forward = 1

==> default: Setting up swapspace version 1, size = 2097148 KiB

==> default: no label, UUID=170723d8-1782-4915-a877-4d9874ac7396

➜  install git:(master) ✗ ping 192.168.100.20

PING 192.168.100.20 (192.168.100.20): 56 data bytes

64 bytes from 192.168.100.20: icmp_seq=0 ttl=64 time=0.390 ms

64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.252 ms

64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.461 ms

^C

--- 192.168.100.20 ping statistics ---

3 packets transmitted, 3 packets received, 0.0% packet loss

round-trip min/avg/max/stddev = 0.252/0.368/0.461/0.087 ms

➜  install git:(master) ✗ ping 192.168.100.20

PING 192.168.100.20 (192.168.100.20): 56 data bytes

64 bytes from 192.168.100.20: icmp_seq=0 ttl=64 time=0.273 ms

Request timeout for icmp_seq 1

Request timeout for icmp_seq 2

Request timeout for icmp_seq 3

Request timeout for icmp_seq 4

With this vagrant file :

Vagrant.configure(2) do |config|

  config.vm.box = "centos7"
  config.vm.hostname = "docker-registry"
  config.vm.box_url = "https://github.com/holms/vagrant-centos7-box/releases/download/7.1.1503.001/CentOS-7.1.1503-x86_64-netboot.box"

  #config.vm.network "public_network"
  config.vm.network "private_network", ip: "192.168.100.20"
  #config.vm.synced_folder ".", "/vagrant", type: "nfs"

  # VirtualBox
  config.vm.provider :virtualbox do |vb|
    vb.name = "poc_docker"
    vb.memory = 3072
    vb.cpus = 2
    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
    vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
  end


end

When I connect on the box, it seems that the ip is lost.

sudo /sbin/ifup eth1




Fix the problem temporary, but the IP get losts sometime again.

Rebooting the box (vagrant halt && vagrant up) seem to fix the problem permanently.

I've try to create a custom centos 7 box with Packer ( https://atlas.hashicorp.com/sfeirbenelux/boxes/centos7), and I reproduce the issue too.

I suppose that's a Centos 7 specific issue ? 

Do you already have the same problem ? Is there a way to fix this by adding a vagrant command ?

My environment :

OS X Yosemite

➜  ~  vagrant --version

Vagrant 1.7.2

➜  ~  VBoxManage --version

4.3.26r98988