Open Stack

From: Mark Goddard <mark at stackhpc.com>
Sent: Friday, October 30, 2020 4:37 AM
To: Radosław Piliszek <radoslaw.piliszek at gmail.com>
Cc: Braden, Albert <C-Albert.Braden at charter.com>; OpenStack Discuss <openstack-discuss at lists.openstack.org>
Subject: Re: [kolla] Setting up eth1 on VM for AIO

On Thu, 29 Oct 2020 at 16:20, Radosław Piliszek <radoslaw.piliszek at gmail.com<mailto:radoslaw.piliszek at gmail.com>> wrote:
Hi Albert!

Sorry for top posting but I don't really see which part to quote would
be best so they all lose. :D

Indeed, it's tricky to handle this if you are not a fan of linux networking.
I guess we should document an example way....

Anyhow, the way e.g. Kayobe handles it for users (as it deals with
baremetal details) is to use bridges and veths.
Basically, you create a bridge, attach it to the expected interface,
set any networking you still want on that network for this host on
this bridge.
Then, you create a veth pair and connect one end to it and the second
one is given to neutron.
>Alternatively, if this is just for development, you can use a dummy interface.
>
>ip link add link eth1 type dummy
>
>It's not persistent, but good enough for testing. If you need external network access from it you could add a MASQUERADE iptables rule and enable the IP >forwarding sysctl.

That seems to be working. After googling a bit I was able to make it persistent:

[root at adjutant-poc ~]# cat /etc/modules-load.d/dummy.conf
dummy

[root at adjutant-poc ~]# cat /etc/modprobe.d/dummy.conf
install dummy /sbin/modprobe --ignore-install dummy; /sbin/ip link set name eth1 dev dummy0

[root at adjutant-poc ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
NAME=eth1
BOOTPROTO=none
DEVICE=eth1
ONBOOT=yes
TYPE=Ethernet
NM_CONTROLLED=no

[root at adjutant-poc ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8950 qdisc pfifo_fast state UP group default qlen 1000
    link/ether fa:16:3e:22:c4:e2 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.83/22 brd 192.168.3.255 scope global dynamic eth0
       valid_lft 85821sec preferred_lft 85821sec
    inet6 fe80::f816:3eff:fe22:c4e2/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
    link/ether 7e:e1:fe:31:c9:2e brd ff:ff:ff:ff:ff:ff
    inet6 fe80::7ce1:feff:fe31:c92e/64 scope link
       valid_lft forever preferred_lft forever

-yoctozepto

On Thu, Oct 29, 2020 at 12:49 PM Braden, Albert
<C-Albert.Braden at charter.com<mailto:C-Albert.Braden at charter.com>> wrote:
>
> I’m trying to setup an allinone kolla-ansible Train POC on a VM, and I’m following the instructions here:
>
>
>
> https://docs.openstack.org/kolla-ansible/train/user/quickstart.html
>
>
>
> Under “Prepare initial configuration” where it talks about globals.yml, it says I need 2 network interfaces:
>
>
>
> network_interface: "eth0"
>
> neutron_external_interface: "eth1"
>
>
>
> My VM has a private IP and a floating IP that I use to ssh to it:
>
>
>
> | ID                                   | Name              | Status  | Networks                              | Image           | Flavor         |
>
> | 41f6782a-8ca8-4ab4-8fdc-776584139ba0 | adjutant-poc      | ACTIVE  | private=<primary IP>, <floating IP>  |                 | s1-standard-08 |
>
>
>
> I tried various options for eth1 but I can’t seem to get it to work:
>
>
>
> [root at adjutant-poc network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
>
> BOOTPROTO=dhcp
>
> DEVICE=eth1
>
> ONBOOT=yes
>
> TYPE=Ethernet
>
> NM_CONTROLLED=no
>
>
>
> I tried creating another port and adding it but that didn’t seem to make a difference. What am I doing wrong? Do I really need 2 network interfaces on the VM? If so, what’s the correct way to add one?
>
>
>
> [root at adjutant-poc network-scripts]# service network restart
>
> Restarting network (via systemctl):  Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
>
>                                                           [FAILED]
>
>
>
> Log:
>
>
>
> http://paste.debian.net/1168982/
>
>
>
> I apologize for the nonsense below. So far I have not been able to stop it from being attached to my external emails. I'm working on it.
>
>
>
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