2:15 a.m.
Hello,
I have an Openstack Queens environment that is composed by VMs inside oVirt.
Initially this oVirt environment was on 4.3 and on director I had to set
vdsm mac spoof to be able to give dhcp address to the overcloud nodes.
I tried something at that time with vnic profiles but I was not able to
have it work as expected, so I used the hook.
Now I have migrated this same environment to 4.4.2 and I see that vdsm mac
spoof is no more an option:
https://bugzilla.redhat.com/show_bug.cgi?id=1703840
I tried some combinations of vnic profiles on director vnic but it seems
not to work as a dhcpserver as before.
I see DHCPDISCOVER from overcloud node in director messages (while before I
saw DHCPREQUEST), I see the DHCPOFFER from director, but I don't see the
DHCPACK from the overcloud node...
On director I have the br-ctlplane vswitch using its interface eth1:
ovs-vsctl show
. . .
Bridge br-ctlplane
Controller "tcp:127.0.0.1:6633"
is_connected: true
fail_mode: secure
Port br-ctlplane
Interface br-ctlplane
type: internal
Port "eth1"
Interface "eth1"
Port phy-br-ctlplane
Interface phy-br-ctlplane
type: patch
options: {peer=int-br-ctlplane}
ovs_version: "2.11.0"
[root@director ~]# ovs-ofctl show br-ctlplane
OFPT_FEATURES_REPLY (xid=0x2): dpid:0000566f3d480014
n_tables:254, n_buffers:0
capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
actions: output enqueue set_vlan_vid set_vlan_pcp strip_vlan mod_dl_src
mod_dl_dst mod_nw_src mod_nw_dst mod_nw_tos mod_tp_src mod_tp_dst
1(eth1): addr:56:6f:3d:48:00:13
config: 0
state: 0
speed: 0 Mbps now, 0 Mbps max
2(phy-br-ctlplane): addr:76:76:8b:08:d4:2f
config: 0
state: 0
speed: 0 Mbps now, 0 Mbps max
LOCAL(br-ctlplane): addr:56:6f:3d:48:00:14
config: 0
state: 0
speed: 0 Mbps now, 0 Mbps max
OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0
[root@director ~]#
[root@director ~]# ip addr show dev br-ctlplane
6: br-ctlplane: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UNKNOWN group default qlen 1000
link/ether 56:6f:3d:48:00:14 brd ff:ff:ff:ff:ff:ff
inet 172.23.0.220/24 brd 172.23.0.255 scope global br-ctlplane
valid_lft forever preferred_lft forever
inet 172.23.0.222/32 scope global br-ctlplane
valid_lft forever preferred_lft forever
inet 172.23.0.221/32 scope global br-ctlplane
valid_lft forever preferred_lft forever
inet6 fe80::546f:3dff:fe48:14/64 scope link
valid_lft forever preferred_lft forever
[root@director ~]#
The eth1 interface is configured in oVirt on vlan23.
The overcloud nodes have one vnic on vlan 23.
I have two dnsmasq processes on director, for ironic and for overcloud
nodes:
nobody 1527 1 0 Nov14 ? 00:00:00 /sbin/dnsmasq
--conf-file=/etc/ironic-inspector/dnsmasq.conf
nobody 3288 1 0 Nov14 ? 00:00:00 dnsmasq --no-hosts
--no-resolv
--pid-file=/var/lib/neutron/dhcp/22a5739b-acb6-4400-8247-080a66895f1a/pid
--dhcp-hostsfile=/var/lib/neutron/dhcp/22a5739b-acb6-4400-8247-080a66895f1a/host
--addn-hosts=/var/lib/neutron/dhcp/22a5739b-acb6-4400-8247-080a66895f1a/addn_hosts
--dhcp-optsfile=/var/lib/neutron/dhcp/22a5739b-acb6-4400-8247-080a66895f1a/opts
--dhcp-leasefile=/var/lib/neutron/dhcp/22a5739b-acb6-4400-8247-080a66895f1a/leases
--dhcp-match=set:ipxe,175 --local-service --bind-dynamic
--dhcp-range=set:subnet-d48e002b-f269-4ed5-a96e-9aeba0b119b9,172.23.0.0,static,255.255.255.0,86400s
--dhcp-option-force=option:mtu,1500 --dhcp-lease-max=256
--conf-file=/etc/dnsmasq-ironic.conf --domain=localdomain
In messages of director when booting the overcloud node:
Nov 15 00:42:45 director dnsmasq-dhcp[3288]: DHCPDISCOVER(tap9fdd5920-62)
172.23.0.232 56:6f:3d:48:00:3c
Nov 15 00:42:45 director dnsmasq-dhcp[1527]: 3792136019
DHCPDISCOVER(br-ctlplane) 56:6f:3d:48:00:3c ignored
Nov 15 00:42:45 director dnsmasq-dhcp[3288]: DHCPOFFER(tap9fdd5920-62)
172.23.0.232 56:6f:3d:48:00:3c
Nov 15 00:42:45 director dnsmasq-dhcp[3288]: DHCPOFFER(tap9fdd5920-62)
172.23.0.232 56:6f:3d:48:00:3c
In oVirt 4.3 with the same setup and VDSM MAC spoof hook configured I saw
this inside messages of director when booting the overcloud nodes:
Oct 18 04:50:05 director dnsmasq-dhcp[3230]: DHCPREQUEST(tap9fdd5920-62)
172.23.0.232 56:6f:3d:48:00:3c
Oct 18 04:50:05 director dnsmasq-dhcp[3230]: DHCPACK(tap9fdd5920-62)
172.23.0.232 56:6f:3d:48:00:3c host-172-23-0-232
Questions:
what is the filter to give to have it work?
is it dynamic the effect at runtime for a running VM to edit its vnic and
change its profile?
is it dynamic for running VMs that for a vNIC with a certain profile if I
go in Networks --> vNIC Profiles --> Edit vNIC Profile and change its
network filter value?
Thanks for any insight.
Gianluca