[ovirt-users] oVirt Node Network conf X DNS

Rogério Ceni Coelho rogeriocenicoelho at gmail.com
Wed Sep 14 17:16:28 EDT 2016 

Hi oVirt Users and Admins !!!

I am installing ovirt 4.0.3 and do above conf on my OVirt Node using bond
and vlan.

When I add this host to ovirt engine and associate ovirtmgmt network with
same tag vlan number 1051, DNS conf was overwrited by vdsm.

So, as i do not find any way to set DNS on ovirt engine network conf i
think that for ovirt nodes i need to use another network that i do not plan
to use with virtual machines ( because if i add a new network on ovirt
engine with same tag vlan number the ovirt node conf will be overwrited by
vdsm ).

Before add to ovirt engine :

[root at prd-rbs-ovirt-kvm01-poa ~]# ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN

    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: em1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

3: em2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

4: p3p1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

5: p3p2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

    inet6 fe80::5e26:aff:fefd:acc/64 scope link

       valid_lft forever preferred_lft forever

7: bond0.1051 at bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

    inet 10.151.252.222/22 brd 10.151.255.255 scope global bond0.1051

       valid_lft forever preferred_lft forever

    inet6 fe80::5e26:aff:fefd:acc/64 scope link

       valid_lft forever preferred_lft forever

[root at prd-rbs-ovirt-kvm01-poa ~]# cat /etc/resolv.conf

# Generated by NetworkManager

search rbs.com.br rbs.net clicrbs.com.br srvr.rbs.net

nameserver 10.236.68.62

nameserver 10.1.1.40

nameserver 10.155.33.154


After :


[root at prd-rbs-ovirt-kvm01-poa ~]# ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN

    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: em1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

3: em2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

4: p3p1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

5: p3p2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master
bond0 state UP qlen 1000

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP

    link/ether 5c:26:0a:fd:0a:cc brd ff:ff:ff:ff:ff:ff

7: bond0.1051 at bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue master ovirtmgmt state UP

    link/ether fa:d3:c0:cd:dd:a3 brd ff:ff:ff:ff:ff:ff

8: ;vdsmdummy;: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN

    link/ether b2:8b:94:d9:d9:83 brd ff:ff:ff:ff:ff:ff

9: ovirtmgmt: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP

    link/ether fa:d3:c0:cd:dd:a3 brd ff:ff:ff:ff:ff:ff

    inet 10.151.252.222/22 brd 10.151.255.255 scope global ovirtmgmt

       valid_lft forever preferred_lft forever

[root at prd-rbs-ovirt-kvm01-poa ~]# cat /etc/resolv.conf

# Generated by NetworkManager

search rbs.com.br



# No nameservers found; try putting DNS servers into your

# ifcfg files in /etc/sysconfig/network-scripts like so:

#

# DNS1=xxx.xxx.xxx.xxx

# DNS2=xxx.xxx.xxx.xxx

# DOMAIN=lab.foo.com bar.foo.com

[root at prd-rbs-ovirt-kvm01-poa ~]# cat
/etc/sysconfig/network-scripts/ifcfg-ovirtmgmt

# Generated by VDSM version 4.18.11-1.el7.centos

DEVICE=ovirtmgmt

TYPE=Bridge

DELAY=0

STP=off

ONBOOT=yes

IPADDR=10.151.252.222

NETMASK=255.255.252.0

GATEWAY=10.151.252.1

BOOTPROTO=none

MTU=1500

DEFROUTE=yes

NM_CONTROLLED=no

IPV6INIT=no

[root at prd-rbs-ovirt-kvm01-poa ~]#
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