Possible issue between incus OVN and Ubuntu 24.04 LTS?

lpribeiro · June 9, 2024, 3:43pm

Hello,
I followed the incus instructions page to setup the OVN, but when I try to create the OVN network with the command: incus network create ovntest --type=ovn network=<parent_network> , with the appropriate parent interface, I receive this message: Error: Failed loading network: OVN isn’t currently available

This is a physical server, but I tried also with a Ubuntu 22.04.3 LTS virtual machine in other server and I was able to create a OVN network.

PS: I followed also the incus webpage for installation in Ubuntu 24 and 22.
Thank you.

stgraber · June 10, 2024, 3:30am

If OVN was installed after Incus, it may be worth trying systemctl restart incus to see if that sorts it out?

lpribeiro · June 10, 2024, 8:35am

Hello, I rebooted the server several times, but still had the same error (should this be the same as restarting the incus service I think). On ubuntu 22 I don’t have to restart the incus service. Would you like to share some output of any logs?

lpribeiro · June 10, 2024, 7:26pm

I’m not sure about this issue, if is because I have 4 physical network interfaces. I installed Ubuntu 22 in my physical server, and I received the same message when I was trying to create a new OVN network. But after doing the command: systemctl restart incus I was able to create the network.
However, once I rebooted my server (I don’t have a display connected to it), my server took so long to boot that I just powered off and connected a display to understand why iss tooking too long to boot.
With all network cables disconnected the server boot succesfully and I configured in netplan all the interfaces with dhcp: false and one interface with static IP.
With this I was able to boot quicker and incus works fine.

stgraber · June 11, 2024, 3:02am

And when on the broken system, ovn-nbctl show works properly?

If not configured otherwise (through incus config set), Incus will connect to OVN through the local socket at /var/run/ovn/ovnnb_db.sock

lpribeiro · June 11, 2024, 10:58am

I’m not sure, I apologize but already “formatted” my machine with Ubuntu 22 and I can’t test it anymore.

jlg · July 26, 2024, 9:43pm

Good evening,
I tried to install OVN in an Ubuntu 24.04 Incus virtual machine without success:

incus config show testvm

architecture: x86_64
config:
image.architecture: amd64
image.description: Ubuntu noble amd64 (20240725_07:42)
image.os: Ubuntu
image.release: noble
image.requirements.cgroup: v2
image.serial: “20240725_07:42”
image.type: disk-kvm.img
image.variant: cloud
limits.cpu: “2”
limits.memory: 4GiB
volatile.base_image: e7009a0c173193e4cd7c9bc85cdb5557214ce9c9ffebe36daaf49f70db98cfdd
volatile.cloud-init.instance-id: 21591bbe-9acb-490d-9857-6016c531c6d2
volatile.eth0.host_name: tapf85f1d2d
volatile.eth0.hwaddr: 00:16:3e:18:a6:9d
volatile.last_state.power: RUNNING
volatile.last_state.ready: “false”
volatile.uuid: 213bd0c5-fb60-4e81-adae-228865b36e29
volatile.uuid.generation: 213bd0c5-fb60-4e81-adae-228865b36e29
volatile.vsock_id: “1699190578”
devices: {}
ephemeral: false
profiles:

default
stateful: false
description: “”

ip -br address show

root@testvm:~#ip -br a s
lo UNKNOWN 127.0.0.1/8 ::1/128
enp5s0 UP 10.32.64.254/24 metric 100 fd42:c84d:c751:e196:216:3eff:fe18:a69d/64 fe80::216:3eff:fe18:a69d/64
ovs-system DOWN
br-int DOWN
incusbr0 DOWN 10.2.180.1/24 fd42:15dd:ff8b:60a::1/64

incus network show incusbr0

config:
ipv4.address: 10.2.180.1/24
ipv4.dhcp.ranges: 10.2.180.11-10.2.180.100
ipv4.nat: “true”
ipv4.ovn.ranges: 10.2.180.101-10.2.180.200
ipv6.address: fd42:15dd:ff8b:60a::1/64
ipv6.nat: “true”
description: “”
name: incusbr0
type: bridge
used_by:

/1.0/profiles/default
managed: true
status: Created
locations:
none

systemctl list-units ovn-*

UNIT LOAD ACTIVE SUB DESCRIPTION
ovn-central.service loaded active exited Open Virtual Network central components
ovn-controller.service loaded active running Open Virtual Network host control daemon
ovn-host.service loaded active exited Open Virtual Network host components
ovn-northd.service loaded active running Open Virtual Network central control daemon
ovn-ovsdb-server-nb.service loaded active running Open vSwitch database server for OVN Northbound database
ovn-ovsdb-server-sb.service loaded active running Open vSwitch database server for OVN Southbound database

root@testvm:~# ovn-nbctl show
root@testvm:~#

root@testvm:~# incus network create ovntest --type=ovn network=incusbr0
Error: Failed loading network: OVN isn’t currently available

stgraber · July 26, 2024, 10:43pm

Try systemctl restart incus. It’s likely that OVN wasn’t reachable at the time Incus started.

jlg · July 26, 2024, 11:13pm

Bonsoir Stéphane,
Merci d’avoir répondu si vite.

I’m afraid it didn’t work.

root@testvm:~# systemctl restart incus

systemctl status incus --no-pager

root@testvm:~# systemctl status incus --no-pager
● incus.service - Incus - Main daemon
Loaded: loaded (/usr/lib/systemd/system/incus.service; indirect; preset: enabled)
Active: active (running) since Fri 2024-07-26 23:10:59 UTC; 9s ago
TriggeredBy: ● incus.socket
Docs: man:incusd(1)
Process: 3139 ExecStartPre=/usr/libexec/incus/incus-apparmor-load (code=exited, status=0/SUCCESS)
Process: 3144 ExecStartPre=/bin/mkdir -p /var/log/incus/ (code=exited, status=0/SUCCESS)
Process: 3147 ExecStartPre=/bin/chown -R root:incus-admin /var/log/incus/ (code=exited, status=0/SUCCESS)
Process: 3150 ExecStartPost=/usr/bin/incus admin waitready --timeout=600 (code=exited, status=0/SUCCESS)
Main PID: 3149 (incusd)
Tasks: 18
Memory: 33.1M (peak: 38.8M)
CPU: 675ms
CGroup: /system.slice/incus.service
├─3149 /usr/libexec/incus/incusd --group incus-admin --logfile=/var/log/incus/incus.log
└─3194 dnsmasq --keep-in-foreground --strict-order --bind-interfaces --except-interface=lo --pid-file= --no-ping -…

Jul 26 23:10:58 testvm dnsmasq-dhcp[3194]: DHCPv4-derived IPv6 names on fd42:15dd:ff8b:60a::, constructed for incusbr0
Jul 26 23:10:58 testvm dnsmasq-dhcp[3194]: router advertisement on fd42:15dd:ff8b:60a::, constructed for incusbr0
Jul 26 23:10:58 testvm dnsmasq-dhcp[3194]: IPv6 router advertisement enabled
Jul 26 23:10:58 testvm dnsmasq-dhcp[3194]: DHCP, sockets bound exclusively to interface incusbr0
Jul 26 23:10:58 testvm dnsmasq[3194]: using only locally-known addresses for incus
Jul 26 23:10:58 testvm dnsmasq[3194]: reading /etc/resolv.conf
Jul 26 23:10:58 testvm dnsmasq[3194]: using nameserver 127.0.0.53#53
Jul 26 23:10:58 testvm dnsmasq[3194]: using only locally-known addresses for incus
Jul 26 23:10:58 testvm dnsmasq[3194]: read /etc/hosts - 7 names
Jul 26 23:10:59 testvm systemd[1]: Started incus.service - Incus - Main daemon.

root@testvm:~# incus network create ovntest --type=ovn network=incusbr0
Error: Failed loading network: OVN isn’t currently available

jlg · July 26, 2024, 11:35pm

Logs ?

ovn-controller.log

ovn-northd.log

ovsdb-server-nb.log

ovsdb-server-sb.log

stgraber · July 29, 2024, 2:43am

All three of the usual commands:

ovs-vsctl show
ovn-nbctl show
ovn-sbctl show

Work as expected?

jlg · July 29, 2024, 5:53am

ovs-vsctl show

root@testvm:~# ovs-vsctl show
4d9f6ea3-ac15-453b-a2d0-27e92d3a7954
Bridge br-int
fail_mode: secure
datapath_type: system
Port br-int
Interface br-int
type: internal
ovs_version: “3.3.0”

ovn-nbctl show

root@testvm:~# ovn-nbctl show
output : nothing

ovn-sbctl show

root@testvm:~# ovn-sbctl show
Chassis “e242612d-57f4-4682-b996-510b24f6c94b”
hostname: testvm
Encap geneve
ip: “127.0.0.1”
options: {csum=“true”}

jlg · July 29, 2024, 7:19am

It’s been solved.

I simply installed the package from the zabbly repository (incus 6.3) instead of the one available in Ubuntu noble (incus 6.0)

Incus packages for Ubuntu Noble

I’m sorry,
Lesson learned.

Encore merci.