The simplest way to establish communication between the VMs is to put them all on an internal network using the internal network mode. This also means that they are on three different networks as it is impossible to allocate the same IP address to three machines on the same network. It's important that our three VMs have the IP address: 10.0.2.15 and that they can access the internet. Choose Wi-Fi preferences - Advanced - and find the IP address. You will see the InetAddress.Īndroid - open Settings and make sure you are connected to the VirtWifi network. Ubuntu - open Terminal, type ifconfig, and hit Enter. Windows - open Command Prompt, type ipconfig, and hit Enter. Use these instructions to find the IP address of each VM: You can check this by looking at the IP address given to each VM. It allows VMs to access the internet (if their host is connected ), but not to communicate with each other. Step 2: Configure the Network NAT ModeĪs previously mentioned, the default network mode is NAT. These are lightweight operating systems that need very few resources. If this is the case, try installing three Tiny Core Linux VMs. Here you are reaching the limits of what is possible with type 2 hypervisors. If you have performance problems when you launch all of your VMs simultaneously, it may be because your host system does not have enough RAM or you have not allocated enough to your VMs. You can find the Windows 10 VM disk here to create the VM we did in Chapter 3. There’s no need to create a new Ubuntu or Android VM – you can use the ones from the previous chapter. Let's start by looking at an NAT network.
Retrieve database updates from a remote server which can be accessed via a URL. Regularly send requests to the other machines. The company has Android, Windows, and Linux machines, and you want to check if your app works properly in this complex environment. This was the context: you’re working on a multi-platform app for internal use only. Now that you understand all the network modes, let’s go back to our example from the first chapter. Similar to an internal network, but when communication needs to be allowed with the host. Similar to NAT, several VMs need to communicate with each other (impossible in classic NAT mode). You are using several VMs to simulate private networks that do not have external access or access to the host machine. It needs to be seen on the network as a physical machine with its own externally accessible IP address.
Only use one VM to download apps, carry out updates, or surf the internet. This table shows what each network mode is best for: There are several network modes that define how your VM will access the network. However, you'll have to configure it if it doesn't work automatically. When you create a VM, a virtual network card is allocated by default, allowing it to access the internet.
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