Re: Help with network config in RAC Attack 12c
- From: "Mark J. Bobak" <mark@xxxxxxxxx>
- To: Chris Taylor <christopherdtaylor1994@xxxxxxxxx>
- Date: Mon, 14 Jul 2014 13:14:22 -0400
The problem is definitely in routing.
If I (successfully) ping 'google.com' in the host, I can see the IP tha was
resolved. If I then take that IP and try pinging it in the guest, I get an
error,"connect: Network is unreachable".
Here's what I see in ifconfig:
[root@racattack1 ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 08:00:27:EC:82:04
inet addr:192.168.78.51 Bcast:192.168.78.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:feec:8204/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:87 errors:0 dropped:0 overruns:0 frame:0
TX packets:73 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9779 (9.5 KiB) TX bytes:8813 (8.6 KiB)
eth1 Link encap:Ethernet HWaddr 08:00:27:23:4D:DD
inet addr:172.16.100.51 Bcast:172.16.255.255 Mask:255.255.0.0
inet6 addr: fe80::a00:27ff:fe23:4ddd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:888 (888.0 b)
eth2 Link encap:Ethernet HWaddr 08:00:27:64:3D:21
inet addr:10.0.4.15 Bcast:10.0.4.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe64:3d21/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1 errors:0 dropped:0 overruns:0 frame:0
TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:590 (590.0 b) TX bytes:1110 (1.0 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1091 (1.0 KiB) TX bytes:1091 (1.0 KiB)
and here's my routing table:
[root@racattack1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
10.0.4.0 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 1002 0 0 eth0
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
172.16.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
192.168.78.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
(Those are both from the guest.)
-Mark
On Mon, Jul 14, 2014 at 12:07 PM, Chris Taylor <
christopherdtaylor1994@xxxxxxxxx> wrote:
> Can the guest just not RESOLVE DNS requests or can it not ping outside IP
> addresses at all?
>
> If it's a resolv issue, make sure you look at /etc/resolv.conf - also make
> sure PEERDNS=NO (I believe) in the ifcfg-eth device settings.
>
> If it can't even ping outside IP addresses, then its a routing problem and
> outside traffic is attempting an incorrect interface for outbound traffic.
>
> Chris
>
>
> On Mon, Jul 14, 2014 at 10:45 AM, Mark J. Bobak <mark@xxxxxxxxx> wrote:
>
>> Hi all,
>>
>> I'm working on setting up a two-node RAC, using the RAC Attack 12c guide.
>> (Virtual Box 4.3.12 on Mac OS X 10.9.4 running Oracle Linux 6.5 guests)
>>
>> I'm at the point where I've successfully built the first node, and set up
>> shared storage.
>>
>> I noticed that my guest, racattack1, can't see the Internet. I thought
>> this should be possible through the NAT interface, on eth2, but it doesn't
>> seem to work.
>>
>> Can anyone offer me some advice?
>>
>> Thanks,
>>
>> -Mark
>>
>
>
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