openstack team mailing list archive

Thread
Date
Quantum and DHCP

To: openstack@xxxxxxxxxxxxxxxxxxx
From: Mohammad Banikazemi <mb@xxxxxxxxxx>
Date: Thu, 19 Jan 2012 20:49:38 -0500
In-reply-to: <CAE2bT_1gs9iYnbaT7A-=QhuR3RbeqC8RpdAKw-DywJSVCCLM5Q@mail.gmail.com>
Is there a requirement to use DHCP with quantum? Even when I do not specify
the "--quantum_use_dhcp" flag, my vm which gets spawned successfully (and
an IP address is assigned to it and it's /etc/network/interfaces gets
created to use that IP address) tries to get its IP address using udhcpc
but fails and does not get an IP address (ipv4 address that is). I see
exactly the same thing happening when I specify the "--quantum_use_dhcp"
flag.
Any suggestions as to what I may be doing incorrectly? Why dhcp is used
without the "--quantum_use_dhcp" flag, and why dhcp server does not respond
even when the "--quantum_use_dhcp" flag is specified. I am using a single
node install with devstack.
Thanks.



...
...

info: initramfs: up at 0.63
[    0.664224] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
info: copying initramfs to /dev/vda
info: initramfs loading root from /dev/vda
info: /etc/init.d/rc.sysinit: up at 2.04
Starting logging: OK
Initializing random number generator... done.
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 11.21. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 2/30: up 12.22. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 3/30: up 13.23. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 4/30: up 14.24. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 5/30: up 15.25. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 6/30: up 16.25. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 7/30: up 17.26. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 8/30: up 18.27. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 9/30: up 19.28. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 10/30: up 20.28. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 11/30: up 21.29. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 12/30: up 22.30. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 13/30: up 23.30. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 14/30: up 24.31. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 15/30: up 25.32. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 16/30: up 26.33. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 17/30: up 27.33. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 18/30: up 28.34. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 19/30: up 29.35. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 20/30: up 30.35. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 21/30: up 31.36. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 22/30: up 32.37. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 23/30: up 33.38. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 24/30: up 34.38. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 25/30: up 35.39. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 26/30: up 36.40. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 27/30: up 37.41. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 28/30: up 38.41. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 29/30: up 39.42. request failed
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-setup: failed 30/30: up 40.43. 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 02:16:3E:66:2C:7F
          inet6 addr: fe80::16:3eff:fe66:2c7f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:1434 (1.4 KiB)
          Interrupt:11 Base address:0xa000

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
### dmesg | tail
[    0.690966] kjournald starting.  Commit interval 5 seconds
[    0.690982] EXT3-fs (vda): mounted filesystem with ordered data mode
[    0.703180] EXT3-fs: barriers not enabled
[    0.703298] kjournald starting.  Commit interval 5 seconds
[    0.706462] EXT3-fs (vda): using internal journal
[    0.706468] EXT3-fs (vda): mounted filesystem with ordered data mode
[    1.353050] Refined TSC clocksource calibration: 2931.842 MHz.
[    2.049597] EXT3-fs (vda): using internal journal
[    2.180522] 8139cp 0000:00:03.0: eth0: link up, 100Mbps, full-duplex,
lpa 0x05E1
[   12.256052] eth0: no IPv6 routers present
### tail -n 25 /var/log/messages
Jan 19 12:54:24 cirros kern.info kernel: [    0.000000] KERNEL supported
cpus:
Jan 19 12:54:24 cirros kern.info kernel: [    0.000000]   Intel
GenuineIntel
Jan 19 12:54:24 cirros kern.info kernel: [    0.000000]   AMD AuthenticAMD
Jan 19 12:54:24 cirros kern.info kernel: [    0.000000]   Centaur
CentaurHauls
Jan 19 12:54:24 cirros kern.info kernel: [    0.000000] BIOS-provided
physical RAM map:
Jan 19 12:54:24 cirros kern.info kernel: [    0.000000]  BIOS-e820:
0000000000000000 - 000000000009dc00 (usable)
Jan 19 12:54:24 cirros kern.info kernel: [    0.660038] ne2k-pci.c:v1.03
9/22/2003 D. Becker/P. Gortmaker
Jan 19 12:54:24 cirros kern.info kernel: [    0.663940] 8139cp: 8139cp:
10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
Jan 19 12:54:24 cirros kern.warn kernel: [    0.664224] ACPI: PCI Interrupt
Link [LNKC] enabled at IRQ 11
Jan 19 12:54:24 cirros kern.info kernel: [    0.665091] 8139cp
0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 11 (level, high) -> IRQ 11
Jan 19 12:54:24 cirros kern.info kernel: [    0.668545] 8139cp
0000:00:03.0: eth0: RTL-8139C+ at 0xffffc9000015a000, 02:16:3e:66:2c:7f,
IRQ 11
Jan 19 12:54:24 cirros kern.debug kernel: [    0.668577] 8139cp
0000:00:03.0: setting latency timer to 64
Jan 19 12:54:24 cirros kern.info kernel: [    0.672910] pcnet32:
pcnet32.c:v1.35 21.Apr.2008 tsbogend@xxxxxxxxxxxxxxxx
Jan 19 12:54:24 cirros kern.info kernel: [    0.677414] ip_tables: (C)
2000-2006 Netfilter Core Team
Jan 19 12:54:24 cirros kern.info kernel: [    0.690817] EXT3-fs: barriers
not enabled
Jan 19 12:54:24 cirros kern.info kernel: [    0.690966] kjournald starting.
Commit interval 5 seconds
Jan 19 12:54:24 cirros kern.info kernel: [    0.690982] EXT3-fs (vda):
mounted filesystem with ordered data mode
Jan 19 12:54:24 cirros kern.info kernel: [    0.703180] EXT3-fs: barriers
not enabled
Jan 19 12:54:24 cirros kern.info kernel: [    0.703298] kjournald starting.
Commit interval 5 seconds
Jan 19 12:54:24 cirros kern.info kernel: [    0.706462] EXT3-fs (vda):
using internal journal
Jan 19 12:54:24 cirros kern.info kernel: [    0.706468] EXT3-fs (vda):
mounted filesystem with ordered data mode
Jan 19 12:54:24 cirros kern.info kernel: [    1.353050] Refined TSC
clocksource calibration: 2931.842 MHz.
Jan 19 12:54:24 cirros kern.info kernel: [    2.049597] EXT3-fs (vda):
using internal journal
Jan 19 12:54:24 cirros kern.info kernel: [    2.180522] 8139cp
0000:00:03.0: eth0: link up, 100Mbps, full-duplex, lpa 0x05E1
Jan 19 12:54:34 cirros kern.debug kernel: [   12.256052] eth0: no IPv6
routers present
############ debug end   ##############
cloud-setup: failed to read iid from metadata. tried 30
WARN: /etc/rc3.d/S45-cloud-setup failed
Starting dropbear sshd: generating rsa key... generating dsa key... OK
===== cloud-final: system completely up in 41.89 seconds ====
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
  instance-id:
  public-ipv4:
  local-ipv4 :
wget: can't connect to remote host (169.254.169.254): Network is
unreachable
cloud-userdata: failed to read instance id
WARN: /etc/rc3.d/S99-cloud-userdata failed
  ____               ____  ____
 / __/ __ ____ ____ / __ \/ __/
/ /__ / // __// __// /_/ /\ \
\___//_//_/  /_/   \____/___/
 http://launchpad.net/cirros



login as 'cirros' user. default password: 'cubswin:)'. use 'sudo' for root.
Follow ups

Re: Quantum and DHCP
From: Dan Wendlandt, 2012-01-20
References

Memory quota in nova-compute nodes.
From: Jorge Luiz Correa, 2012-01-19
Re: Memory quota in nova-compute nodes.
From: Christian Berendt, 2012-01-19
Re: Memory quota in nova-compute nodes.
From: Jorge Luiz Correa, 2012-01-19