[Openstack] ifconfig in VM not showing IP address of eth0 port

Ahmed Al-Mehdi ahmedalmehdi at gmail.com
Thu Nov 29 00:13:05 UTC 2012


Hi Razique,

Thank you helping out.  Yes, I see an IP addr assigned to the instance.
 And yes, I am using libvirt.

root at novato:~/ahmed# nova list
+--------------------------------------+-------+--------+-------------------------+
| ID                                   | Name  | Status | Networks
       |
+--------------------------------------+-------+--------+-------------------------+
| 26188c69-e67d-41b8-a066-6103b191fbea | myvm1 | ACTIVE |
net_proj_one=10.10.10.3 |
+--------------------------------------+-------+--------+-------------------------+
root at novato:~/ahmed#

I do not have the external network setup.  Is that necessary to get an IP
address from the private network to which eth0 of the VM network is
attached.


>From cirros log, it seem dhcp is enabled and started, but fails to get an
IP addr:

Starting network...
udhcpc (v1.18.5) started
Sending discover...
Sending discover...
Sending discover...
No lease, failing
WARN: /etc/rc3.d/S40-network failed
cloud-setup: checking
http://169.254.169.254/2009-04-04/meta-data/instance-id
wget: can't connect to remote host (169.254.169.254): Network is unreachable
cloud-setup: failed 1/30: up 10.00. request failed
wget: can't connect to remote host (169.254.169.254): Network is unreachable
cloud-setup: failed 2/30: up 11.02. request failed
...........
wget: can't connect to remote host (169.254.169.254): Network is unreachable
cloud-setup: failed 30/30: up 39.15. request failed
cloud-setup: after 30 fails, debugging
cloud-setup: running debug (30 tries reached)
############ debug start ##############
### /etc/rc.d/init.d/sshd start
/etc/rc3.d/S45-cloud-setup: line 66: /etc/rc.d/init.d/sshd: not found
route: fscanf
### ifconfig -a
eth0      Link encap:Ethernet  HWaddr FA:16:3E:D9:8E:97
          inet6 addr: fe80::f816:3eff:fed9:8e97/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:17 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2062 (2.0 KiB)  TX bytes:1134 (1.1 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:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

### route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
route: fscanf
### cat /etc/resolv.conf
cat: can't open '/etc/resolv.conf': No such file or directory
### gateway not found
/etc/rc3.d/S45-cloud-setup: line 66: can't open /etc/resolv.conf: no such
file
### pinging nameservers
### uname -a
Linux cirros 3.0.0-12-virtual #20-Ubuntu SMP Fri Oct 7 18:19:02 UTC 2011
x86_64 GNU/Linux
### lsmod
Module                  Size  Used by    Not tainted
vfat                   17585  0
fat                    61475  1 vfat
isofs                  40253  0
ip_tables              27473  0
x_tables               29846  1 ip_tables
pcnet32                42078  0
8139cp                 27412  0
ne2k_pci               13691  0
8390                   18856  1 ne2k_pci
e1000                 108573  0
acpiphp                24080  0
.....



On Wed, Nov 28, 2012 at 3:44 PM, Razique Mahroua
<razique.mahroua at gmail.com>wrote:

> Hi Ahmed,
> on your controller, run $nova list
> does the instance has an IP affected there ?
> Also check cirros log, try to restart the DHCP service to see if it
> retrieves the IP.
> are you using libvirt ?
> regards,
> *Razique Mahroua** - **Nuage & Co*
> razique.mahroua at gmail.com
>
>
> Le 28 nov. 2012 à 21:54, Ahmed Al-Mehdi <ahmedalmehdi at gmail.com> a écrit :
>
> Hello,
>
> I setup an two node OpenStack setup, running Quantum and Cinder components.
>
> After I launched the VM (based on cirros image), I logged into it through
> the Console.  When I do an "ifconfig", I see that eth0 is up, it's status
> is "UP BROADCAST RUNNING ...".  However, I don't see an IP address assigned
> to it.  Is that normal, did I make a mistake while creating/launching the
> VM.
>
> Thank you,
> Ahmed.
>
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