On Tue, May 22, 2012 at 03:53:56PM +0300, avi tal wrote:
On 05/22/2012 03:06 PM, Livnat Peer wrote:
On 22/05/12 14:35, avi tal wrote:
On 05/22/2012 11:45 AM, Livnat Peer wrote:
Hi All,
This is a summary of comments we(*) gathered while reviewing the current network related functionality in oVirt, we'll open the relevant RFE/Bugs but wanted to share first to get comments:
Default Gateway: ---------------- current status - In the UI/API we expose to the user the possibility to configure the default gateway for the host. We expose this option only when editing the management network.
comments - Apparently we do not configure the host default gateway but the network gateway.
1. We need to fix the phrasing to gateway (not default gateway) not true. especially in linux we configure "default gateway". unlike windows which holds gateway for each interface, linux holds only one default gateway. I'll leave this one to Danken.
Running POC in my machine: # cat ifcfg-eth1 DEVICE=eth1 ONBOOT=yes BOOTPROTO=static IPADDR=X.Y.129.10 NETMASK=255.255.255.0 GATEWAY=X.Y.129.254
# cat ifcfg-eth2 DEVICE=eth2 ONBOOT=yes BOOTPROTO=static IPADDR=X.Y.127.10 NETMASK=255.255.255.0 GATEWAY=X.Y.127.254
# cat /etc/sysconfig/network NETWORKING=yes HOSTNAME=... GATEWAY=X.Y.128.254
# service network restart # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface X.Y.129.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 X.Y.127.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2 169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 1004 0 0 eth2 169.254.0.0 0.0.0.0 255.255.0.0 U 1005 0 0 eth3 0.0.0.0 X.Y.127.254 0.0.0.0 UG 0 0 0 eth2
NOTE: we can add static routing to each interface using route-<interface>
I am afraid that I've been misleading Livnat and Simon in private communications. I've repressed this fact for a long while, but apparently initscripts's usage of GATEWAY, be it in interface or hostwide config, is to set the host's default gateway. /etc/sysconfig/network-scripts/ifup-eth : if [ -n "${GATEWAY}" ] ...; then ip route replace default ${METRIC:+metric $METRIC} \ via ${GATEWAY} ${WINDOW:+window $WINDOW} ${SRC} \ ${GATEWAYDEV:+dev $GATEWAYDEV} ... This means that oVirt's current behavior is ok as it is - we set GATEWAY for a single network that is always on, and thus control the host's default gateway.