VM eth0 no configured

Community Support Network
1

Hello community

I am new to OpenNebula and doing my first steps.
My setup is a frontend server and two compute nodes with opennebula community 6.10.0 on oracle linux 9.5
I configured the Virtual Networks with 802.1Q VLAN, my problem is, eth0 of every VM has no IP configured within the VM. I see the assigned IP in the frontend but eth0 of the VM is just not configured.
If I configure eth0 manually I can connect to the VM, so bridge/vlan setup seems to be ok.

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I checked /var/run/one-context/context.sh.network on the vm over the remote console and there I see the same information as in /var/lib/one/vms/21/context.sh on the frontend server

# Context variables generated by OpenNebula
DISK_ID='1'
ETH0_DNS='192.168.101.1'
ETH0_EXTERNAL=''
ETH0_GATEWAY='192.168.101.1'
ETH0_IP='192.168.101.11'
ETH0_IP6=''
ETH0_IP6_GATEWAY=''
ETH0_IP6_METHOD=''
ETH0_IP6_METRIC=''
ETH0_IP6_PREFIX_LENGTH=''
ETH0_IP6_ULA=''
ETH0_MAC='02:00:c0:a8:65:0b'
ETH0_MASK='24'
ETH0_METHOD='static'
ETH0_METRIC=''
ETH0_MTU=''
ETH0_NETWORK='192.168.101.0'
ETH0_SEARCH_DOMAIN=''
ETH0_VLAN_ID='101'
ETH0_VROUTER_IP=''
ETH0_VROUTER_IP6=''
ETH0_VROUTER_MANAGEMENT=''
NETWORK='YES'

I am a little bit lost at the moment and I hope someone has an idea, what I did wrong or what to check.

Thank you
Michael

2

I found it, the problem is in the “virtual network” => Context

The subnet mask has to be in dotted decimal notation (e.g 255.255.255.0) and not as CIDR notation (e.g. 24).

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After changing the subnet mask the ip is correctly configured within the vms.

3

Hello @Michael_Wirz,

Welcome to this forum, if the above comment is the solution, can you mark it as resolved then?
Let us know if you found other issues on your OpenNebula journey :wink:

Cheers,