2 Replies Latest reply on Jan 27, 2020 5:14 AM by dalo

    DHCP issue with VIO 6 15330102 VDS

    dalo Hot Shot



      We experience the issue, that deployed instances don't get a IP from the DHCP agent, so the don't get configured.

      If I manually assign a IP after the deployment, the Network seems to be ok: I can ping other instances and external hosts, but not the mentioned DHCP adresses.


      Our test deployment is on a nested ESXi and a VIO 6 15330102, VDS. So this should nod affected by the password bug.

      The eth2 interfaces of all 3 controller nodes are attached to a Trunk port group.


      Dhcp seems to run:


      [root@controller-jd75b6qc54 /]# ps -eaf | grep dhcp

      root        39     0  1 Jan07 ?        07:12:15 /bin/python2 /usr/bin/neutron-dhcp-agent --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/dhcp_agent.ini --config-file /var/lib/neutron/dhcp/dhcp_override_mac.ini

      root        62     1  0 Jan07 ?        00:00:13 /bin/python2 /bin/privsep-helper --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/dhcp_agent.ini --config-file /var/lib/neutron/dhcp/dhcp_override_mac.ini --privsep_context neutron.privileged.default --privsep_sock_path /tmp/tmpFnJl9H/privsep.sock

      root      9387  9354  0 07:56 pts/0    00:00:00 grep --color=auto dhcp

        • 1. Re: DHCP issue with VIO 6 15330102 VDS
          dalo Hot Shot

          some additional observations:


          If I create a Network with network type "vlan" the DHCP assignment works, but only if the VM is on a vESXi with a controller vm.

          With network type "flat" it doesn't work either.

          So this seems to be more a network related issue, maybe because its nested.

          • 2. Re: DHCP issue with VIO 6 15330102 VDS
            dalo Hot Shot

            Ok I could fix this:


            Issue "vlan based network on different nested Hosts":

            I've to enable VLAN Trunking on the underlying vswitch.


            Issue "flat network not working":

            For DVS the documentation states: "With VDS networking, you can create a VLAN-based provider network." because for NSX deployments the term "flat" is explicit included in this statement, I conclude that "flat" is not supported for VDS.