I'm creating a VM definition and I want to specify a single "private_network" on the primary interface of the box (eth0, it's Linux)
Despite having only one config.vm.network statement, I keep getting the desired network set on eth1, while eth0 is assigned an ip from a 10.0.2.0/24 subnet which I have never defined.
How can I prevent this and have my desired 192.168.x.y/24 set on eth0?
Best,
Edoardo
eth0 is by default used by Vagrant for NAT (VirtualBox NAT networking mode), which allow you to vagrant ssh into the box (port forwarding rules - host 2222 <=> guest 22).
That's why you have 2 NICs even though you have only 1 config.vm.network in Vagrantfile.
I don't think it can be disabled, BUT I am not 100% sure, you may want to look into vagrant source code to dig further.
https://superuser.com/questions/957631/how-to-force-vagrant-to-have-a-single-bridged-network-interface
You can try to add the adapter: 1 to the config. Although I still find some problem with it. See if it will help you starts from somewhere.
Example:
config.vm.network "public_network", bridge: "Broadcom BCM5709C", adapter: "1", ip: "192.168.x.xx"
You will still have the eth1 which is host-only network...
Related
I have started learning Vagrant.
What I want to do is create a private network with 2 guests :
ip private network: 192.168.3.0
ip guest #1 (centos8): 192.168.3.1
ip guest #2 (ubuntu20.o4): 192.168.3.2
So:
Vagrant.configure("2") do |config|
config.vm.network "private_network", ip: "192.168.3.1"
end
Vagrant.configure("2") do |config|
config.vm.network "private_network", ip: "192.168.3.2"
end
I thought that setting a network as "Private" no other guests on Vagrant were able to do ping to them or do ssh... Because I can do it.
What Must I do? to isolate that network from others guests.
The only solution I know is specific to the VirtualBox provider, using VirtualBox's internal network feature:
Internal Networking is similar to bridged networking in that the VM can directly communicate with the outside world. However, the outside world is limited to other VMs on the same host which connect to the same internal network.
https://www.virtualbox.org/manual/ch06.html#network_internal
In vagrant you would specify the internal network like this:
config.vm.network "private_network", ip: "192.168.100.4",
virtualbox__intnet: "isolatednet1"
Where isolatednet1 can be any name you want for the internal network. All VirtualBox VMs using the isolatednet1 network will be able to communicate with each other, but they won't be able to communicate with VMs outside the internal network.
Note that instead of a network name you can use a boolean value of true for virtualbox__intnet but in that case Vagrant will assign all VMs to the network "intnet". So if you want to achieve isolation you need to assign a unique internal network name for each group of VMs you want to isolate.
I have a few vagrant VMs (both on Mac and windows, all running linux). I have port forwarding defined like this in the Vagrant file:
config.vm.network "forwarded_port", guest: 80, host: 9007
The first time I do a vagrant up it works fine. But then when I do a vagrant reload or vagrant halt followed by vagrant up I get this message:
Vagrant cannot forward the specified ports on this VM, since they
would collide with some other application that is already listening
on these ports. The forwarded port to 9007 is already in use
on the host machine.
To fix this, modify your current project's Vagrantfile to use another
port. Example, where '1234' would be replaced by a unique host port:
config.vm.network :forwarded_port, guest: 80, host: 1234
Sometimes, Vagrant will attempt to auto-correct this for you. In this
case, Vagrant was unable to. This is usually because the guest machine
is in a state which doesn't allow modifying port forwarding. You could
try 'vagrant reload' (equivalent of running a halt followed by an up)
so vagrant can attempt to auto-correct this upon booting. Be warned
that any unsaved work might be lost.
Then I have to change the port to bring up the VM, which is a pain. I have checked with netstat and lsof, and nothing seems to be using the port. I though it was perhaps a timing issue, and after a while I could use the port, but even after waiting many hours I still get the error.
This happens in both the Mac and Windows environments. Is there some setting that would allow me to reuse the ports?
I generally use static IP to avoid issues with port forwarding. Vagrant has an auto_correct feature to help fix that.
from vagrant forwarded port docs
It is common when running multiple Vagrant machines to unknowingly
create forwarded port definitions that collide with each other (two
separate Vagrant projects forwarded to port 8080, for example).
Vagrant includes built-in mechanism to detect this and correct it,
automatically.
Port collision detection is always done. Vagrant will not allow you to
define a forwarded port where the port on the host appears to be
accepting traffic or connections.
Port collision auto-correction must be manually enabled for each
forwarded port, since it is often surprising when it occurs and can
lead the Vagrant user to think that the port was not properly
forwarded. Enabling auto correct is easy:
Vagrant.configure("2") do |config|
config.vm.network "forwarded_port", guest: 80, host: 8080,
auto_correct: true
end
The final :auto_correct parameter set to true tells Vagrant to auto
correct any collisions. During a vagrant up or vagrant reload, Vagrant
will output information about any collisions detections and auto
corrections made, so you can take notice and act accordingly.
I need to configure a vm into using vagrant and virtualbox as provider. The issue is related to how to allow network comunication between the virtual machine and the host machine.
Concretly, I need:
Each developer is using a log viewer in his host machine in order to be able see the log messages generated into vm applications. So I need to send log messages to an network address(host) from guest.
Each developer machine has its own ip address, so I'm not able to reference to a single ip since each developer has its host ip address.
Any ideas?
This is how I've set up my VMs lately, hopefully it points you in the right direction.
My requirements were:
enable internet access on a single guest basis
enable access guest to guest
enable access host to guest
avoid IP changes when changing physical network (lan home, lan work, random wlans)
avoid IP clash with various clients VPNs
avoid showing machines on the physical network
To do this use 2 network interfaces on all guests.
Default NAT, enables internet access;
HostOnly network, enables communication host-to-guest and guest-to-guest.
Steps:
Create hostonly network with DHCP (Virtualbox comes with a default one, I customized it)
hostonly network setup
hostonly network DHCP
add network adapters to the guest
NAT(default)
hostonly-network
Start the VM, check with ip a and ip r:
ip addr
ip route (has docker installed too, ignore that)
Create Vagrantfile to provision VM configured like above (I'm using bento/ubuntu-20.04).
NAT is on by default
join the hostonly-network with "modifyvm" (avoid :private_network as it creates a new network that will clash with the one already available), add to Vagrantfile:
config.vm.provider "virtualbox" do |vb|
vb.customize ["modifyvm", :id, "--nic2", "hostonly"]
vb.customize ["modifyvm", :id, "--hostonlyadapter2", "vboxnet1"] #use proper network name here
vb.customize ["modifyvm", :id, "--cableconnected2", "on"]
end
vagrant up
vagrant ssh
ip a will show eth1 as down
try sudo ifup eth1, in my case this failed
edit /etc/network/interfaces and add this:
allow-hotplug eth1
iface eth1 inet dhcp
sudo ifup eth1 should work now and get an ip from the DHCP of the host-only network
Probably these last steps could be added to vagrant shell provisioning but I'm still new to it.
Edit: add this section to Vagrantfile for the steps above:
config.vm.provision "shell", inline: <<-SHELL
if ! ifquery eth1 > /dev/null 2>&1; then
sudo echo "allow-hotplug eth1" >> /etc/network/interfaces
sudo echo "iface eth1 inet dhcp" >> /etc/network/interfaces
sudo ifup eth1
ip -4 a show dev eth1
fi
SHELL
At this point the vagrant vm should be accessible, able to access the web, able to access the hostonly network (other guests and the host through the configured ip, 192.168.178.1 in my case), these should all work:
ping 8.8.8.8 #web
ping 192.168.178.1 #host
ping 192.168.178.3 #other guest
Final result
Hopefully this enables all relevant communication for your use case also.
I have external IP address. I added it to my eth0 interface of host machine. I can successfully ping it. I want to run VM using Vagrant and set my external IP to it (I want to call my VM just like a simple VPS using this external IP address). I have next line in Vagrantfile for this:
node.vm.network "public_network", ip: myExternalIP
After my machine start I see eth2 interface inside my VM with my external IP as inet addr. But I can't get access to any open port on my vm using this IP address. Maybe I don't understand idea of public_network in Vagrant. How to bind external ip to my Vagrant VM?
Update: As I understood vagrant set default gateway of VM to interface under NAT. Due to NAT packages cant be sent from VM to external world through bridged interface.
I got it working this way:
config.vm.network "public_network", ip: "192.168.0.17"
The scenario is that my dev environment is on a Vagrant box on my laptop (host) and I would like to do browser testing in a vitualbox vm, so I need to see one vm from another.
The vagrant box's port is :8080 which is forwarded to the host on the same port :8080. So I can see the server from the host at localhost:8080
Which address should I be using for the browser testing vm?
The testing vm's default gateway?
The vagrant vm's ip?
The host's virtual network ip?
And should I be using a NAT or host only adapter on the browser testing vm?
That makes for a lot of combinations, all of which I believe I have tried. What else do I need to understand here?
In your use case, you should be using Bridged networking (Public Network in Vagrant). If the VMs reside on the same host, you can even use internal (Private Network in Vagrant).
If using Public Network, the VM's 2nd NIC will be able to obtain an IP address from the DHCP server in your network (e.g. your home router).
Simply add the following code block in your Vagrantfile and do a vagrant reload
Vagrant.configure("2") do |config|
config.vm.network "public_network"
end
You should be able to get the IP address by using vagrant ssh and ifconfig / ip addr show.
In case you don't want to go with public_network just like me then you should do the steps below using private_network:
Open Vagrantfile from your project root
Search for config.vm.network
Add this line config.vm.network "private_network", ip: "192.168.33.10". Remember this is not the IP of your base machine it's a virtual-box IP address and your machine IP should be different. You can say it's a fake IP address so change it to anything else like 192.168.30.20.
Reload your vagrant using vagrant reload.
Now go to your other virtual guest in my case it's the Windows Guest 2. My base is Linux Mint Vagrant box is on Ubuntu Guest 1. Open C:\Windows\System32\drivers\etc\hosts file as admin and do the above IP's entry in there like 192.168.33.10 local.youralias.com. And save the file, after that you can now browse the site now at http://local.youralias.com/.
In case your guest 2 is also Linux just edit this file sudo vi /etc/hosts, and add this line at top of it 192.168.33.10 local.youralias.com. Now save and exit and browse the URL :)
Enjoy! Happy coding.
Adding to accepted answer, you can actually set IP and specify which network interface to use.
My setup on linux box via wifi and static IP:
You can find your wifi interface name by running ifconfig command.
Vagrant.configure("2") do |config|
config.vm.network "public_network", :bridge => 'wlp8s0', ip: "192.168.1.199"
end
This may have many source cause. In my case, I use vagrant fedora boxe.
I tried:
First using the private_network that I attached to a host only adapter and launched httpd service to test the connection between guest and host
config.vm.network "private_network", type: "dhcp", name: "vboxnet2"
config.vm.network "forwarded_port", guest:80, host:7070
but I was not able to ping my guest machine from the host and could no telnet the httpd service opened
Second using public_network and launched httpd service to test connectivity
config.vm.network "public_network", bridge: "en0: Wi-Fi (AirPort)", use_dhcp_assigned_default_route: true
I could ping my guest from my host but I could not telnet the httpd service.
For this two use case, the issue was that the port 80 on the fedora guest host was blocked by the firewall. Here is what fixed the issue and get all working for both privat_network and public_ntwork:
firewall-cmd --permanent --add-port 80/tcp #open the port permanently
firewall-cmd --zone=public --permanent --add-service=http
firewall-cmd --list-port # list to check if the port was opened
systemctl stop firewalld # stop and open the firewall service
systemctl start firewalld
Old question, new answer: [disclaimer: i am not a vagrant expert]
both solutions might work but the solution in the "vagrant way of thinking" is that some component in your guest (rinetd?) should forward any requests to unknown ports to the host. From the host the request could then be mapped (via vagrant port forwarding) to a services that is running in the other guest.
So, to resume:
1.in guest-1 we do localhost:1234. Guest-1 will detect that this port is not available and forward to host
2. the host will check the vagrant port forwarding and forward to guest-2
3. in guest-2 we have some nice service listening to post 1234
4. done.