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