Ubuntu22.04安装ovs和配置KVM虚拟化

安装OVS

apt install -y openvswitch-switch

验证

ovs-vsctl show

创建名为ovs_br0的网桥

ovs-vsctl add-br ovs_br0

配置网桥ip

这是原有的netplan配置文件

root@master02:~# cat /etc/netplan/00-installer-config.yaml
# This is the network config written by 'subiquity'
network:
  bonds:
    bond0:
      addresses:
      - 10.11.0.12/24
      interfaces:
      - ens6f0np0
      - ens6f1np1
      nameservers:
        addresses:
        - 114.114.114.114
        - 8.8.8.8
        search: []
      parameters:
        lacp-rate: slow
        mode: 802.3ad
        transmit-hash-policy: layer2
      routes:
      - to: default
        via: 10.11.0.1
  ethernets:
    ens6f0np0: {}
    ens6f1np1: {}
  version: 2

我们修改下

network:
  version: 2
  renderer: networkd
  ethernets:
    ens6f0np0: {}
    ens6f1np1: {}
  bonds:
    bond0:
      interfaces:
      - ens6f0np0
      - ens6f1np1
      parameters:
        lacp-rate: slow
        mode: 802.3ad
        transmit-hash-policy: layer2
  bridges:
    ovs_br0:
      interfaces:
      - bond0
      addresses:
      - 10.11.0.12/24
      routes:
      - to: default
        via: 10.11.0.1
      nameservers:
        addresses:
        - 114.114.114.114
        - 8.8.8.8
      parameters:
        stp: false
        forward-delay: 0

然后执行下命令

ovs-vsctl add-port ovs_br0 bond0 
netplan apply

执行完第一条命令后会断网，切换至IPMI或物理机 继续执行第二条命令

安装KVM

apt install -y qemu-kvm qemu-system virt-manager libvirt-daemon-system virtinst libvirt-clients bridge-utils  libosinfo-bin libguestfs-tools virt-top virt-viewer

注意，因为jumpserver不能转发X11图形，所以在安装KVM之前，提前安装了ubuntu-desktop 和 xrdp 使用jumpserver支持的RDP协议进行GUI界面的操作

apt install -y ubuntu-desktop xrdp 
## 因为桌面版会开启自动休眠模式，所以禁用自动休眠
systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

##默认情况下，Xrdp 使用/etc/ssl/private/ssl-cert-snakeoil.key,它仅仅对“ssl-cert” 用户组成语可读。运行下面的命令，将xrdp用户添加到这个用户组：
sudo adduser xrdp ssl-cert  
systemctl restart xrdp

启用虚拟化守护进程（libvirtd）

systemctl enable --now libvirtd
systemctl start libvirtd

创建网桥

修改/etc/netplan下面的yaml配置文件 ，示例：

network:
  bridges:
    br0:
      interfaces: [enp100s0f1]
      dhcp4: false
      addresses: [192.168.1.113/24]
      routes:
        - to: default
          via: 192.168.1.1
      nameservers:
        addresses: [119.29.29.29]
      parameters:
        stp: false
      dhcp6: false
  ethernets:
    enp100s0f1: {}
  version: 2

虚拟机相关配置

新建 /etc/libvirt/qemu/networks/ovs.xml:

<network>
  <name>ovs</name>
  <forward mode="bridge"/>
  <bridge name="ovs_br0"/>
  <virtualport type="openvswitch"/>
</network>

将配置文件加到virsh网络中

virsh net-define /etc/libvirt/qemu/networks/ovs.xml

查看

启用ovs虚拟网卡

virsh net-start ovs

虚拟机选择相应网卡

virsh net-list --all