Cannot provision on newly added hosts due to bridge network not being created

SVI Wed, 04 Aug 2021 20:59:03 -0700

Hi,

I followed setting up of KVM hosts on my ubuntu 20.04 and added it as in my 
cloudstack cluster. I tried launching an instance but always gets this error in 
the hypervisor:


 WARN  [resource.wrapper.LibvirtStartCommandWrapper] 
(agentRequest-Handler-2:null) (logid:3851fa03) InternalErrorException 
com.cloud.exception.InternalErrorException: Failed to create vnet 225: Error: 
argument "brenp129s0f1-225" is wrong: "name" not a valid ifnameCannot find 
device "brenp129s0f1-225"Failed to create br: brenp129s0f1-225

Bridging seems ok based on the guide I followed. Here’s my 
/etc/network/interfaces:

auto lo
iface lo inet loopback
# The primary network interface
auto enp129s0f0
iface enp129s0f0 inet manual
# The second network interface
auto enp129s0f1
iface enp129s0f1 inet manual
# management network
auto cloudbr0
iface cloudbr0 inet static
    bridge_ports enp129s0f0
    bridge_fd 5
    bridge_stp off
    bridge_maxwait 1
    address 192.168.1.120
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4
    dns-domain dev.cloudstack.io
# guest network
auto cloudbr1
iface cloudbr1 inet manual
    bridge_ports enp129s0f1
    bridge_fd 5
    bridge_stp off
    bridge_maxwait 1

Help is very much appreciated.

Btw, this is almost the same configuration as my other 2 hypervisors and 
everything works fine on the other 2.

Here’s the 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: enp129s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master 
cloudbr0 state UP group default qlen 1000
    link/ether ac:1f:6b:25:87:c2 brd ff:ff:ff:ff:ff:ff
3: enp129s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master 
cloudbr1 state UP group default qlen 1000
    link/ether ac:1f:6b:25:87:c3 brd ff:ff:ff:ff:ff:ff
4: ens3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default 
qlen 1000
    link/ether 00:02:c9:54:3a:94 brd ff:ff:ff:ff:ff:ff
5: cloudbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
group default qlen 1000
    link/ether ac:1f:6b:25:87:c2 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.120/24 brd 192.168.1.255 scope global cloudbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::ae1f:6bff:fe25:87c2/64 scope link 
       valid_lft forever preferred_lft forever
6: cloudbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
group default qlen 1000
    link/ether ac:1f:6b:25:87:c3 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::ae1f:6bff:fe25:87c3/64 scope link 
       valid_lft forever preferred_lft forever
7: cloud0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state 
UNKNOWN group default qlen 1000
    link/ether ae:18:19:bc:36:07 brd ff:ff:ff:ff:ff:ff
    inet 169.254.0.1/16 scope global cloud0
       valid_lft forever preferred_lft forever
    inet6 fe80::ac18:19ff:febc:3607/64 scope link 
       valid_lft forever preferred_lft forever
8: enp129s0f1.225@enp129s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc 
noqueue state UP group default qlen 1000
    link/ether ac:1f:6b:25:87:c3 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::ae1f:6bff:fe25:87c3/64 scope link 
       valid_lft forever preferred_lft forever



Thanks.

Cannot provision on newly added hosts due to bridge network not being created

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