VMs traffic cannot go outside host

28 Jun 2021

      Hi

trying to get hands on ovirt virtualization.
built a test environment on vmware workstation:
  - 2 VMs running centos7 as ovirt Hosts
  - 1 VM running centos 7 as ovirt-manager

on ovirt Hosts:
[root@ovirt-node1 ~]# rpm -q cockpit-ovirt-dashboard qemu-kvm-ev libvirt virt-install bridge-utils vdsm
cockpit-ovirt-dashboard-0.13.10-1.el7.noarch
qemu-kvm-ev-2.12.0-44.1.el7_8.1.x86_64
libvirt-4.5.0-36.el7_9.5.x86_64
virt-install-1.5.0-7.el7.noarch
bridge-utils-1.5-9.el7.x86_64
vdsm-4.30.46-1.el7.x86_64

on ovirt-manager:
[oVirt shell (connected)]# info
backend version: 4.3.10
sdk version    : 4.3.4
cli version    : 3.6.9.2
python version : 2.7.5.final.0
entry point    : https://ovirt-manager.home.lab/ovirt-engine/api

I created two ovirt VMs, running ubuntu16, on the same VM Networks "vmnet-02"
Both VMs' traffic cannot go outside hosts (i.e they can reach each others only if they run on the same host)
need help fix this please!

[d@dv6 ~]$ ovirt-node2
Last login: Mon Jun 28 15:25:12 2021 from 10.0.1.1
[root@ovirt-node2 ~]# ifconfig 
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 00:0c:29:d2:71:10  txqueuelen 1000  (Ethernet)
        RX packets 5388529  bytes 7970598031 (7.4 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 287643  bytes 124694822 (118.9 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 00:0c:29:d2:71:1a  txqueuelen 1000  (Ethernet)
        RX packets 6574  bytes 637208 (622.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3573  bytes 393479 (384.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

genev_sys_6081: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 65000
        ether fe:66:e6:5e:51:f8  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

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 15152  bytes 3732985 (3.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 15152  bytes 3732985 (3.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ovirtmgmt: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.1.22  netmask 255.255.255.0  broadcast 10.0.1.255
        ether 00:0c:29:d2:71:10  txqueuelen 1000  (Ethernet)
        RX packets 308773  bytes 7630918499 (7.1 GiB)
        RX errors 0  dropped 42  overruns 0  frame 0
        TX packets 253627  bytes 92412626 (88.1 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vmnet-02: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.57.146  netmask 255.255.255.0  broadcast 192.168.57.255
        ether 00:0c:29:d2:71:1a  txqueuelen 1000  (Ethernet)
        RX packets 9367  bytes 640524 (625.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1015  bytes 248111 (242.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether fe:6f:b4:ee:00:01  txqueuelen 1000  (Ethernet)
        RX packets 6483  bytes 289530 (282.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5120  bytes 480414 (469.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@ovirt-node2 ~]# 
[root@ovirt-node2 ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.0.1.254      0.0.0.0         UG    0      0        0 ovirtmgmt
10.0.1.0        0.0.0.0         255.255.255.0   U     0      0        0 ovirtmgmt
169.254.0.0     0.0.0.0         255.255.0.0     U     1023   0        0 ovirtmgmt
192.168.57.0    0.0.0.0         255.255.255.0   U     0      0        0 vmnet-02

Here I can access the guest VM:
[root@ovirt-node2 ~]# ssh sysadmin@10.0.1.44
sysadmin@10.0.1.44's password: 
sysadmin@ubuntu16-1:~$ ifconfig 
ens4      Link encap:Ethernet  HWaddr 56:6f:b4:ee:00:01  
          inet addr:10.0.1.44  Bcast:10.0.1.255  Mask:255.255.255.0
          inet6 addr: fe80::546f:b4ff:feee:1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:312 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1834 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:75924 (75.9 KB)  TX bytes:87332 (87.3 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:1136 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1136 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:105288 (105.2 KB)  TX bytes:105288 (105.2 KB)

sysadmin@ubuntu16-1:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.0.1.254      0.0.0.0         UG    0      0        0 ens4
10.0.1.0        0.0.0.0         255.255.255.0   U     0      0        0 ens4

but from the other host "node1" I cannot.

deyaa112006＠hotmail.com

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