13 aug 2012 kl. 23.56 skrev Justin Clift:
On 13/08/2012, at 10:55 PM, Ricardo Esteves wrote:
Hi,
I the attached picture "net1.jpg" i have my initial network configuration.
Physical card (em1) with vlan 10 (em1.10) bridged to the ovirtmgmt with IP
192.168.10.25 and default gw 192.168.10.254.
Now i want to bond em1 card with p1p1 card (attached picture net2.jpg)
But if i fill the default gw it gives me this error: The default gateway should
be set only on engine network.
If i don't fill the default gw, when i click ok, i loose connection to the
server and then after more or less 1 minute the server automaticaly reboots.
Anyone had this kind of problem?
Two thoughts here: ;)
* The "lose connection to the server" bit sort of sounds like
this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=838816
Reckon that's a match?
* Aside from that, you might have to manually configure
networking for the hosts from the command line. Using the
normal Linux commands I mean, not oVirt specific ones.
i.e. creating the bridging and everything manually.
This is the approach I had to take last week when trying
out Aeolus with oVirt 3.1. Network layer breaks when
adding a 2nd interface, but was able to work around it
by manually creating the bridges from cli, after having
defined the logical networks in the oVirt Web UI.
The "configure things manually" approach isn't all that
documented either. I kind of stumbled my way through, by
looking at the examples here:
I second that! I just trial and errored my way through bond -> vlan -> bridge.
Let´s just say that´s for people who are up for a challenge. But luckily, I´m
one for sharing:
Start by defining to load bonding at boot:
# cat > /etc/modprobe.d/bonding.conf << EOF
alias bond0 bonding
EOF
Then define the bond. This is LACP mode:
# cat > /etc/sysconfig/network-scripts/ifcfg-bond0 << EOF
DEVICE=bond0
NM_CONTROLLED=no
USERCTL=no
BOOTPROTO=none
BONDING_OPTS="mode=4 miimon=100"
TYPE=Ethernet
MTU=9000
EOF
Then "enslave" the physical NICs to the bond:
# cat > /etc/sysconfig/network-scripts/ifcfg-em1 << EOF
NM_CONTROLLED="no"
BOOTPROTO="none"
DEVICE="em1"
ONBOOT="yes"
USERCTL=no
MASTER=bond0
SLAVE=yes
EOF
# cat > /etc/sysconfig/network-scripts/ifcfg-em2 << EOF
NM_CONTROLLED="no"
BOOTPROTO="none"
DEVICE="em2"
ONBOOT="yes"
USERCTL=no
MASTER=bond0
SLAVE=yes
EOF
Then create VLAN interfaces ontop of the bond. In this example, I´m using VLAN
ID 1 and 2:
# cat > /etc/sysconfig/network-scripts/ifcfg-bond0.1 << EOF
DEVICE=bond0.1
VLAN=yes
BOOTPROTO=none
NM_CONTROLLED=no
BRIDGE=br1
MTU=1500
EOF
# cat > /etc/sysconfig/network-scripts/ifcfg-bond0.2 << EOF
DEVICE=bond0.2
VLAN=yes
BOOTPROTO=none
NM_CONTROLLED=no
BRIDGE=ovirtmgmt
MTU=9000
EOF
Lastly, create the bridges ontop of the VLAN interfaces. The names, as I have
understood it, can be whatever you want, but one needs to be called "ovirtmgmt"
of course:
# cat > /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt << EOF
TYPE=Bridge
NM_CONTROLLED="no"
BOOTPROTO="none"
DEVICE="ovirtmgmt"
ONBOOT="yes"
IPADDR=XXX.XXX.XXX.XXX
NETMASK=255.255.255.0
EOF
# cat > /etc/sysconfig/network-scripts/ifcfg-br0 << EOF
TYPE=Bridge
NM_CONTROLLED="no"
BOOTPROTO="none"
DEVICE="br0"
ONBOOT="yes"
IPADDR=XXX.XXX.XXX.XXX
NETMASK=255.255.255.0
EOF
Gateway goes into:
# cat > /etc/sysconfig/network << EOF
GATEWAY=XXX.XXX.XXX.XXX
EOF
This way, you can have almost(4096) as many interfaces as you want with only
two physical NICs. I also gave an example on how you tune Jumbo Frames to be
active on some interfaces, and have regular windows size on the rest. Jumbo
most only be active on interfaces that isn´t routed, since the default routing
size is 1500.
/Karli
http://wiki.ovirt.org/wiki/Installing_VDSM_from_rpm#Configuring_the_bridge_Interface
Is any of that helpful?
Regards and best wishes,
Justin Clift
Best regards,
Ricardo Esteves.
--
Aeolus Community Manager
http://www.aeolusproject.org
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Karli Sjöberg
Swedish University of Agricultural Sciences
Box 7079 (Visiting Address Kronåsvägen 8)
S-750 07 Uppsala, Sweden
Phone: +46-(0)18-67 15 66
karli.sjob...@slu.se<mailto:karli.sjob...@adm.slu.se>
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