On Tue, Nov 8, 2016 at 8:02 AM, Boris Epstein borepstein@gmail.com wrote:
Hello there,
What is the hypervisor that hosts the VM? What does ifconfig show on it?
Boris.
On Mon, Nov 7, 2016 at 4:36 PM, Gordon Messmer gordon.messmer@gmail.com wrote:
On 11/06/2016 11:00 PM, Sean Son wrote:
How do I configure the networking so that both IPs are pingable and the VM is reachable via both IPs?
You need one rule file per interface, which directs traffic out the appropriate interface based on the source address of the packet:
routing_for_multi_homed
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Hello all
Thank you for the replies. I ran into some issues with the policy based routing which I will explain in a few. First off to answer each one of your questions:
Digimer: No I didnt take a look at IPTables
Peter Brady: Thank you for the example, I tried that but it failed and I will explain in a minute.
Frank Cox : That works but how do I make it persistent across reboots?
Boris Epstein: I am using Hyper-V and its getting annoying lol
Ok so here is how I have set everything up:
my /etc/iproute2/rt_tables:
# # reserved values # 255 local 254 main 253 default 0 unspec # # local # #1 inr.ruhep 300 NIC1 310 NIC2
my /etc/sysconfig/network-scripts/route-eth0 file:
168.87.147.0/24 dev eth0 table 300 default via 168.87.147.1 dev eth0 table 300
/etc/sysconfig/network-scripts/route-eth1 file:
10.20.50.0/24 dev eth1 table 310 default via 10.20.50.1 dev eth1 table 310
My /etc/sysconfig/network-scripts/rule-eth0:
from 168.87.147.33/32 table 300 to 168.87.147.33 table 300
My /etc/sysconfig/network-scripts/rule-eth1:
from 10.20.50.90/32 table 310 to 10.20.50.90 table 310
now after implementing this and restarting NetworkManager, when I run 'ip rule list', I get the following:
0: from all lookup local 32764: from all to 10.20.50.90 lookup NIC2 32765: from 10.20.50.90 lookup NIC2 32766: from all lookup main 32767: from all lookup default
and when i run 'ip route' , i get the following:
default via 168.87.147.1 dev eth0 proto static metric 1024 10.20.50.0/24 dev eth1 proto kernel scope link src 10.20.50.90 168.87.147.0/24 dev eth0 proto kernel scope link src 168.87.147.33
yet when I try to ping from another server to 10.20.50.90 it will not ping at all. Also, whenever I reboot the VM, eth1 switches over to DHCP and I lose my IP configuration. After I reset the IP Configuration back to Manual and reenter the IP, Centos creates a new interface file called ifcfg-Wired_Connection-1 and places the IP configuration for the interface into that file. Both virtual NICs are set to Static Mac Addresses, so I dont know why it keeps creating another interface file. Any ideas on what I am doing wrong here? All help is greatly appreciated!
Thanks!