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--- ubuntu:kvm:setup_kvm_with_bridged_networking_and_virt-manager [2019/11/30 13:26] – created peter
+++ ubuntu:kvm:setup_kvm_with_bridged_networking_and_virt-manager [2020/07/15 09:30] (current) – external edit 127.0.0.1
@@ Line 4: / Line 4: @@
-====== Install The Packages ======
+===== Install The Packages =====
 Even though the capabilities for KVM are built into the kernel itself, there are a couple of packages that you'll need to get started.
@@ Line 11: / Line 11: @@
 <code bash>
-sudo apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virt-manager
+sudo apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virtinst libvirt-daemon virt-manager
 </code>
+----
+===== Verify the status of the libvirtd status =====
+The **libvirtd** service should be started automatically. Check this:
+<code bash>
+sudo systemctl status libvirtd.service
+</code>
+----
+===== Start default network =====
+List available networks:
+<code bash>
+sudo virsh net-list --all
+</code>
+To make it active and auto-start across boots:
+<code bash>
+sudo virsh net-start default
+sudo virsh net-autostart default
+</code>
+----
+===== Add vhost_net module =====
+To offload the mechanism of **virtio-net** and to improve performance of KVM VMs add the **vhost_net** kernel module.
+<code bash>
+sudo modprobe vhost_net
+echo "vhost_net" | sudo tee -a /etc/modules vhost_net
+lsmod | grep vhost
+</code>
 ----
@@ Line 56: / Line 97: @@
     bridge_ports eth0
 </file>
+or for a static IP address.
+<file bash /etc/network/interfaces>
+auto lo br0
+iface lo inet loopback
+auto ens33
+iface ens33 inet manual
+auto br0
+iface br0 inet static
+        address 192.168.1.69
+        netmask 255.255.255.0
+        network 192.168.1.1
+        broadcast 192.168.1.255
+        gateway 192.168.1.1
+        bridge_ports ens33
+        bridge_stp off
+        bridge_fd 0
+        bridge_maxwait 0
+        dns-nameservers 1.1.1.1
+...
+</file>
+If netplan is used:
+<file bash /etc/netplan/01-network-manager-all.yaml>
+# Let NetworkManager manage all devices on this system
+network:
+  version: 2
+#  renderer: NetworkManager
+  renderer: networkd
+  ethernets:
+    enp3s0:
+      dhcp4: no
+      # disable existing configuration for ethernet
+      #addresses: [192.168.1.69/24]
+      #gateway4: 192.168.1.1
+      #nameservers:
+        #addresses: [192.168.1.1]
+      dhcp6: no
+  # add configuration for bridge interface
+  bridges:
+    br0:
+      interfaces: [enp3s0]
+      dhcp4: no
+      addresses: [192.168.1.69/24]
+      gateway4: 192.168.1.1
+      nameservers:
+        addresses: [192.168.1.2,192.168.1.1,1.1.1.1]
+      parameters:
+        stp: false
+      dhcp6: no
+</file>
 <WRAP center round info>
@@ Line 95: / Line 194: @@
 That's the best way to ensure that both the networking and user changes take effect.
+Alternatively, to refresh or reload group membership:
+<code bash>
+newgrp libvirt
+newgrp libvirt-qemu
+</code>
+----
+===== Verify that the bridge has come up =====
+<code bash>
+ip a s br0
+</code>
 ----
-====== Creating a VM ======
+====== Create a VM using Virt-Manager (GUI) ======
 Use **virt-manager** to create VMs.
@@ Line 131: / Line 245: @@
 ----
+====== Create a VM from command line ======
+<code bash>
+sudo virt-install \
+  --name ubuntu-vm \
+  --os-type linux \
+  --os-variant ubuntu18.04 \
+  --ram 2048 \
+  --vcpu 1 \
+  --disk path=/var/lib/libvirt/images/ubuntu-vm.qcow2,size=10 \
+  --graphics vnc,listen=0.0.0.0 \
+  --noautoconsole \
+  --hvm \
+  --cdrom /home/peter/vm/ubuntu-18.04-live-server-amd64.iso \
+  --boot cdrom,hd
+</code>
+----
+===== Find VNC display port for ubuntu-vm =====
+<code bash>
+sudo virsh list --all
+</code>
+returns:
+<code bash>
+Id    Name          State
+------------------------------
+     ubuntu-vm     running
+     debian-vm     running
+...
+</code>
+----
+or
+<code bash>
+sudo virsh vncdisplay ubuntu-vm
+</code>
+returns:
+<code bash>
+:0
+</code>
+Connect using Remote Desktop Viewer using IP address and VNC port as "0".
+----
 ====== Closing Thoughts ======