OpenNebula -桥接VM NIC和主机NIC -从LAN DCHP获取Ip

Question

我希望你做得很好，我在这里开始使用OpenNebula，我在centos 8中部署了一个基本的设置一个Opennebula前端另一个服务器作为OpenNebula节点，我从marketplace下载了一个镜像它是centos镜像，然后我在网络>>虚拟网络下创建了一个网络。使用ens33 (ens3是我的节点的物理接口)进行桥接，以便让虚拟机访问局域网，他就是我的节点网络

[centos@host1 ~]$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.60  netmask 255.255.255.0  broadcast 192.168.0.255
        ether 00:0c:29:68:26:2b  txqueuelen 1000  (Ethernet)
        RX packets 679155  bytes 994474147 (948.4 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 41914  bytes 3220552 (3.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 6  bytes 672 (672.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6  bytes 672 (672.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:89:84:b1  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

一旦我创建了一个VM并将其连接到我已经创建的网桥网络，我就会得到状态Failed，并显示以下日志：

Sat May 1 03:50:25 2021 [Z0][VM][I]: New state is ACTIVE
Sat May 1 03:50:25 2021 [Z0][VM][I]: New LCM state is PROLOG
Sat May 1 03:50:38 2021 [Z0][VM][I]: New LCM state is BOOT
Sat May 1 03:50:38 2021 [Z0][VMM][I]: Generating deployment file: /var/lib/one/vms/14/deployment.0
Sat May 1 03:50:39 2021 [Z0][VMM][I]: Successfully execute transfer manager driver operation: tm_context.
Sat May 1 03:50:40 2021 [Z0][VMM][I]: Command execution fail: cat << EOT | /var/tmp/one/vnm/bridge/pre
Sat May 1 03:50:40 2021 [Z0][VMM][E]: pre: Command "sudo ip link add name ens33 type bridge " failed.
Sat May 1 03:50:40 2021 [Z0][VMM][E]: pre: RTNETLINK answers: File exists
Sat May 1 03:50:40 2021 [Z0][VMM][E]: RTNETLINK answers: File exists
Sat May 1 03:50:40 2021 [Z0][VMM][E]:
Sat May 1 03:50:40 2021 [Z0][VMM][I]: ExitCode: 2
Sat May 1 03:50:40 2021 [Z0][VMM][I]: Failed to execute network driver operation: pre.
Sat May 1 03:50:40 2021 [Z0][VMM][E]: Error deploying virtual machine: bridge: RTNETLINK answers: File exists
Sat May 1 03:50:40 2021 [Z0][VM][I]: New LCM state is BOOT_FAILURE

有人能给我解释一下这里出了什么问题吗?我熟悉vsphere esxi/vcenter，我只想创建一个VMNetwork并将其连接到节点物理NIC，然后将虚拟机连接到此VMNetwork，以便使其能够访问局域网。在VMware端，这很简单，但使用OpenNebula时，我不确定它是如何工作的

谢谢

Answer 1

这里的问题是您使用的是物理接口，而不是网桥。如果您想要使用网桥网络，您需要创建一个网桥或让OpenNebula为您创建它。

如果这解决了您的问题，请让我知道，如果没有，请随时在OpenNebula论坛- https://forum.opennebula.io/上提交您的问题。:)