Public bug reported:
After rebooting a host, nova-compute fails to restart guests VM because
the network is not configured correctly. I have
resume_guests_state_on_host_boot=true and
start_guests_on_host_boot=true flags in /etc/nova/nova.conf
nova-network crashs because it lacks brXXX and vlanXXX interfaces.
To restart the guest, i wrote this script to configure the network as
nova did when creating the guest :
#!/bin/sh
add_network() {
BR=br$1
VLAN=vlan$1
LAN=$2
BCAST=$3
vconfig add eth1 $1
brctl addbr $BR
brctl setfd $BR 0
brctl stp $BR off
ip link set $BR up
ip link show dev $BR
brctl addif $BR $VLAN
ip addr show dev $BR scope global
ip addr add "$LAN" brd "$BCAST" dev $BR
}
vconfig set_name_type VLAN_PLUS_VID_NO_PAD
add_network 100 "172.16.0.4/24" "172.16.0.255"
add_network 101 "172.16.1.4/24" "172.16.1.255"
add_network 102 "172.16.2.4/24" "172.16.2.255"
add_network 103 "172.16.3.4/24" "172.16.3.255"
add_network 104 "172.16.4.4/24" "172.16.4.255"
I think nova-network should recreate lacking interfaces (brXXX and
vlanXXX) upon reboot to allow nova-compute to start guests
** Affects: nova (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1011640
Title:
network configuration is not restored after host reboot
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