I am working on l2fwd application with DPDK. I have taken an Ubuntu 16.04 as the Host system that initiates the packet generator and the Ubuntu 16.04 VM that initiates the l2fwd application to analyze the packets that are forwarded.
I have installed DPDK and Pktgen in the corresponding machines, but I am not sure how to establish a connection between Host and VM so that my host can transfer the packets to VM. Should I go with a Host only network? I wasn't able to find much references.
Please refer the DPDK l2fwd user guide, virtual function setup instructions.
Basically, the easiest way would be to either pass through your whole NIC to the VM or setup a virtual function (VF) on your NIC and pass through the configured virtual function.
Virtual function setup is different from driver to driver. For example, for ixgbe we pass arguments to kernel module, i.e.:
modprobe ixgbe max_vfs=2,2
The next steps are:
unbind kernel NIC driver from NIC/VF
bind the NIC/VF to vfio-pci driver
pass the device to the VM with argument -device vfio-pci,host=...
Please find more information here:
http://www.linux-kvm.org/page/10G_NIC_performance:_VFIO_vs_virtio
Related
After rebooting is it possible to open a Hyper-V virtual machine without going through the Manager? It seems like it is already running in the background or maybe it is just in its last state.
If the OS in the Hyper-V virtual allows for remoting and also it is on the same network as the attempt to open a remote desktop to that virtual.
Note that the default network adapter for a virtual will provide a different IP address than what the local network provides to the server. You will most likely want to create a network adapter (in Hyper-V) which shares the network card to the virtual and the virtual will get its IP address from the local network.
If you can ping it, then it can be remoted to..but other things within the virtual has to allow for remoting.
Upon reading the OPs comments, it is clear that the need is to launch the virtual outside of Hyper-V. Hyper-V uses VMConnect.exe to achieve that...and that is available.
One can do that in an elevated Powershell shell such as:
vmconnect {Local/remote computer name} {Virtual Name}
such as
vmconnect Hyperion W10-Zephyr
where Hyperion is the local computer name and W10-Zephyr is the virtual's name.
See also Connecting to Hyper-V virtual machines with PowerShell
I am working with an Ubuntu 18.04 virtual machine. I can SSH into this machine via puTTy on the same computer. However, how can I access this machine from another computer? Or do I have any option to set this machine as a cloud server so others can access and run it?
I think that would all depend on how the networking is configured on your VM.
You can configure the network as bridged (where the VM has it's own dedicated IP address on the local subnet), NAT (where the VM shares the IP with the system running Workstation, but NAT rules can be configured to handle traffic), or host-only (where only the system running Workstation is able to connect to it).
Bridged is probably the easiest to use for your situation.
More information on these networking configs: Common Networking Configurations for Workstation
I am building a sample vagrant box to install Jenkins and push it to atlas cloud.Please find below the steps that I followed.
Vagrant init ubuntu/trusty64
and the normal command to initialize the vagrant machine.
vagrant up
After this if i type command to ssh into the machine
vagrant ssh
It gives me error saying please increase timeout and so.
The main question is how can I ssh into the newly created vagrant machine.
To understand this, I have to go through all the basics. Please find below my findings.
Not attached
In this mode, VirtualBox reports to the guest that a network card is present, but that there is no connection -- as if no
Ethernet cable was plugged into the card. This way it is possible to "pull" the virtual Ethernet cable and disrupt the connection, which can be useful to inform a guest operating system that no network connection is available and enforce a reconfiguration.
Network Address Translation (NAT)
If all you want is to browse the Web, download files and view e-mail inside the guest, then this
default mode should be sufficient for you, and you can safely skip the rest of this section. Please note that there are certain limitations when using Windows file sharing (see Section 6.3.3, “NAT limitations” for details).
NAT Network
The NAT network is a new NAT flavour introduced in VirtualBox latest versions.
Bridged networking
This is for more advanced networking needs such as network simulations and running servers
in a guest. When enabled, VirtualBox connects to one of your installed network cards and exchanges network packets directly, circumventing your host operating system's network stack.
Internal networking
This can be used to create a different kind of software-based network which is visible to selected virtual machines, but not to applications running on the host or to the outside world.
Host-only networking
This can be used to create a network containing the host and a set of virtual machines, without the need for the host's physical network interface. Instead, a virtual network interface (similar to a loopback interface) is created on the host, providing connectivity among virtual machines and the host.
Generic networking
Rarely used modes share the same generic network interface, by allowing the user to select a driver which can be included with VirtualBox or be distributed in an extension pack.
At the moment there are potentially two available sub-modes:
UDP Tunnel
This can be used to interconnect virtual machines running on different hosts directly, easily and transparently, over existing network infrastructure.
VDE (Virtual Distributed Ethernet) networking
This option can be used to connect to a Virtual Distributed Ethernet switch on a Linux or a FreeBSD host. At the moment this needs compiling VirtualBox from sources, as the Oracle packages do not include it.
Out of these, only NAT and Host-only network is important.So, to solve this issue, I modified the predefined Vagrant file with the following code.
jenkins.vm.provider "virtualbox" do |vb|
jenkins.vm.network "private_network",ip:'192.168.56.5',:adapter => 2
jenkins.vm.hostname = 'jenkins.ci'
vb.name = "Jenkins"
end
Here, I have created a private network with static Ip and also, I specified the adapters count to use 2. The Private adapter is Host-only adapter and 1st adapter which is default one is NAT.
Currently I'm trying to create a vm in a Esxi server using Perl SDK provided by the vmware. The Vcenter host and name must be specified in create_vm.pl to create the vms in the Esxi server directly.
Is there any other SDK(like java) supports to install the vm directly on the Esxi serve without specifying the Vcenter.
link:https://www.vmware.com/support/developer/viperltoolkit/doc/utilityappsdoc/vmcreate.html
You just use the IP or hostname of the ESX/i host where it asks for vCenter. Keep in mind write operations are only supported on licensed versions of ESX/i so if you are using the free version it wont work.
I havent used PERL SDK for VMware, but I have used PowerCLI and PyVmomi for my tasks and the APIs require Host/vCenter IP as their host input.
When you provide VC as the host input, you get the objects related to vCenter for that VM, and if you provide ESXi host IP, you can create,manipulate VMs based on the limits of an ESXi server
I am working on a project in which we logon to client's machine using Cirtix receiver. The machine which we connect to using Citrix receiver is basically a Windows 7 machine. Once we are in the client's windows box, inside that we have virtual box, in which VM has been added and which has all the needed software for us to do the development; for example JBOSS, database etc.
In the host machine (windows 7), we have putty, and using putty we sometimes login to the VM (i.e. terminal). The confusion which I have is as below:
We login to the VM terminal using IP address: 127.0.0.1. This is where my confusion is. 127.0.0.1 normally is the IP address with which we can refer to the current machine; so how using this IP address we are able to connect to the VM which is added to the virtual box? Doesn't the VM which is in virtualbox has its own IP address with which we can connect to? Or is there some concept which I am not aware of.
Can anyone help me in understanding this? I am not well versed with virtualization, so for the gurus this might be a naive question.
Every VM will have their uuids so to access the VM inside virtualBox or any hypervisor for that matter. so you can use that particular VM uuid and u should be able to console to that VM.
in virtual box try below
You can use: VBoxManage list vms to list all currently registered VMs with their settings, names and UUIDs.
Once you know the UUID you can also start a vm by:
VBoxManage startvm which is essentially same as: VBoxManage startvm "Name-of-vm"
Also Vm has two interfaces one loopback which will have an address of 127.0.0.1 and the rest of the interfaces so to access the VM with particular ip you need to assign an IP to that VM interface and than try with that IP.Also you might have that port 22 open for that loopback ip so may be that is the reason you are able to connect on loopback
I hope this answers your question