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From "Paul Edwards (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-4690) KVM Router - to many ethernet devices created
Date Tue, 17 Sep 2013 01:41:51 GMT
Paul Edwards created CLOUDSTACK-4690:
----------------------------------------

             Summary: KVM Router - to many ethernet devices created
                 Key: CLOUDSTACK-4690
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-4690
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: KVM
    Affects Versions: 4.1.1
         Environment: Centos 6.4
            Reporter: Paul Edwards
            Priority: Critical


We have setup cloudstack with advanced networking. We have a network created 172.16.24.0/23,
called news preprod. This has a number of vms created under it. When we initially set this
up, we noticed that the router we created with 4 ethernet interfaces. This was unexpected,
but didn't seem to be effecting the running of the router, so we didn't worry about it. The
interfaces were: eth0 172.16.24.14, eth1 169.254.1.91, and both eth2 and eth2 were given the
external ip (xxx.xxx.245.59). We investigated why we were getting 2 externals, but couldn't
figure it out. We also configured the router to have a redundant, with keepalived. They were
working fine.

Now I needed to add another external ip to the network. Did that, and restarted the network.
I now have 8 (eight) eth interfaces. The new external ip is NOT one of them. Heres the ifconfig
output:

root@r-235-VM:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 02:00:68:e1:00:1a  
          inet addr:172.16.24.14  Bcast:172.16.25.255  Mask:255.255.254.0
          inet6 addr: fe80::68ff:fee1:1a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5485 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21101 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:325618 (317.9 KiB)  TX bytes:1581746 (1.5 MiB)

eth1      Link encap:Ethernet  HWaddr 0e:00:a9:fe:01:5b  
          inet addr:169.254.1.91  Bcast:169.254.255.255  Mask:255.255.0.0
          inet6 addr: fe80::c00:a9ff:fefe:15b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:22118 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21148 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3942785 (3.7 MiB)  TX bytes:4287970 (4.0 MiB)

eth2      Link encap:Ethernet  HWaddr 06:16:06:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::416:6ff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:17331 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3930 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1063053 (1.0 MiB)  TX bytes:234546 (229.0 KiB)

eth3      Link encap:Ethernet  HWaddr 06:d7:ec:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::4d7:ecff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13603 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:792907 (774.3 KiB)  TX bytes:704 (704.0 B)

eth4      Link encap:Ethernet  HWaddr 06:8b:5a:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::48b:5aff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13319 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:779753 (761.4 KiB)  TX bytes:704 (704.0 B)

eth5      Link encap:Ethernet  HWaddr 06:7e:68:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::47e:68ff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13080 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:762111 (744.2 KiB)  TX bytes:704 (704.0 B)

eth6      Link encap:Ethernet  HWaddr 06:7e:68:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::47e:68ff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13086 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:762655 (744.7 KiB)  TX bytes:774 (774.0 B)

eth7      Link encap:Ethernet  HWaddr 06:27:a8:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::427:a8ff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13064 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:761153 (743.3 KiB)  TX bytes:704 (704.0 B)

eth8      Link encap:Ethernet  HWaddr 06:27:a8:00:01:03  
          inet addr:xxx.xxx.245.59  Bcast:xxx.xxx.245.255  Mask:255.255.255.0
          inet6 addr: fe80::427:a8ff:fe00:103/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13043 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:759287 (741.4 KiB)  TX bytes:704 (704.0 B)

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:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:414 (414.0 B)  TX bytes:414 (414.0 B)

The cloudstack management browser still shows the router as only supposed to have 3 nics.
The agent log on the physical host has nothing in it (I was tailing that log when I did this,
as I would have thought that the agent has to create the devices for the vm to get them).

I have attached the management log from just before to just after. (Time of change was 9:39am).
I do not know why the router timestamp is not the same as the host. 

I have also attached the log of the router restart.

The physical server is Centos 6.4, and all the vms that we have created are Centos 6.4. KVM
is the hypervisor.

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