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There was an error obtaining the list of registered virtual machines... After avg of 2 min of working fine. #622

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
==What steps will reproduce the problem?==
1. Log into the phpVirtualBox
2. Everything works as normal, I can see the guests running.
3. After 1 to 5 min, the box "There was an error obtaining the list of 
registered virtual machines from VirtualBox." pops up. Refreshing the page gets 
back to normal.

==What is the expected output? What do you see instead?==
I expect the alert box to NOT pop up, and everything to continue as normal.

I have cleared the browser cache several times.

==Versions:==
PHPVirtualBox 4.1.11
VirtualBox 4.1.22
HOST OS: Fedora 3.6.2-1.FC16.X86_64

==Please provide any additional information below.==
- My remote SSH connection also 'freezes' intermittently, which seems to 
correspond with when phpvirtualbox has the issue.
- The exclamation point red triangle icon sometimes does not load on the alert 
dialog.
- Nothing about vbox or phpvirtualbox in /var/log/messages when the error 
occurs.

Recent Activity:
- Updated everything via 'yum update'.
- Installed this version of PHPVirtualBox (removed previous /phpvirtualbox/ 
directory first)

Original issue reported on code.google.com by suthern...@gmail.com on 5 Nov 2012 at 6:39

GoogleCodeExporter commented 8 years ago 
Hello,

This is normally the result of some communication failure between your browser 
and the machine running phpVirtualBox, or phpVirtualBox and the machine running 
vboxwebsrv. Are they all on the same physical computer?

Original comment by imooreya...@gmail.com on 5 Nov 2012 at 6:55

GoogleCodeExporter commented 8 years ago 
This is using a remote computer. The local one works fine. One of the guests is 
Windows Server with MSSQL, and it's connections are completely stable.

The connection errors/drops/freezes happen when connecting to the host only.

Original comment by suthern...@gmail.com on 5 Nov 2012 at 6:58

GoogleCodeExporter commented 8 years ago 
Just to be clear, PHPVirtualBox and VirtualBox are on the same host. Thanks!

Original comment by suthern...@gmail.com on 5 Nov 2012 at 6:58

GoogleCodeExporter commented 8 years ago 
The guests shouldn't matter. 

So when you are using a local browser on the same host, it works fine, and when 
it is from a remote host you get this error? Am I reading that correctly?

Original comment by imooreya...@gmail.com on 5 Nov 2012 at 7:02

GoogleCodeExporter commented 8 years ago 
Yes.

From the remote machine, the connection seems to 'hang', and I get this issue.

When I do it locally, it works fine.

Original comment by suthern...@gmail.com on 5 Nov 2012 at 7:41

GoogleCodeExporter commented 8 years ago 
Then the only conclusion I can come to is that there is an intermittent 
connectivity issue between the remote machine and the host running 
phpvirtualbox.

Original comment by imooreya...@gmail.com on 5 Nov 2012 at 7:48

GoogleCodeExporter commented 8 years ago 
Ok, so could you point me towards resources that would help me troubleshoot 
this?

Original comment by suthern...@gmail.com on 5 Nov 2012 at 8:27

GoogleCodeExporter commented 8 years ago 
What OS is the remote host running?

Original comment by imooreya...@gmail.com on 5 Nov 2012 at 8:29

GoogleCodeExporter commented 8 years ago 
Fedora release 16 - 3.6.2-1.FC16.X86_64

Original comment by suthern...@gmail.com on 5 Nov 2012 at 8:31

GoogleCodeExporter commented 8 years ago 
And my connections to other things (internet, other servers..etc) from my 
'remote' machine are also stable. Only connection between the PHPVirtualBox 
host and my remote computer seem to be effected.

I'm guessing it's related to some process on the host locking up something 
specific to networking, and specific to the ports that SSH and PHPVirtualbox 
use.

Original comment by suthern...@gmail.com on 6 Nov 2012 at 12:48

GoogleCodeExporter commented 8 years ago 
On the remote machine, what do you see when you type:

ifconfig

as root?

Original comment by imooreya...@gmail.com on 6 Nov 2012 at 2:09

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
[root@virtualhost ~]# ifconfig
bond0     Link encap:Ethernet  HWaddr D4:BE:D9:B0:8D:83
          inet addr:10.212.1.116  Bcast:10.212.1.255  Mask:255.255.255.0
          inet6 addr: fe80::d6be:d9ff:feb0:8d83/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:38525082 errors:0 dropped:4410890 overruns:0 frame:0
          TX packets:29610905 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:24409198986 (22.7 GiB)  TX bytes:28925086323 (26.9 GiB)

em1       Link encap:Ethernet  HWaddr D4:BE:D9:B0:8D:83
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:1477393 errors:0 dropped:1471486 overruns:0 frame:0
          TX packets:11670 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:122060796 (116.4 MiB)  TX bytes:1124992 (1.0 MiB)

em2       Link encap:Ethernet  HWaddr D4:BE:D9:B0:8D:83
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:34096473 errors:0 dropped:0 overruns:0 frame:0
          TX packets:29587419 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:24043436788 (22.3 GiB)  TX bytes:28922448883 (26.9 GiB)

em3       Link encap:Ethernet  HWaddr D4:BE:D9:B0:8D:83
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:1475608 errors:0 dropped:1469702 overruns:0 frame:0
          TX packets:5908 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:121850701 (116.2 MiB)  TX bytes:756224 (738.5 KiB)

em4       Link encap:Ethernet  HWaddr D4:BE:D9:B0:8D:83
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:1475608 errors:0 dropped:1469702 overruns:0 frame:0
          TX packets:5908 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:121850701 (116.2 MiB)  TX bytes:756224 (738.5 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5462856 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5462856 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2644979381 (2.4 GiB)  TX bytes:2644979381 (2.4 GiB)

[root@virtualhost ~]#

Original comment by suthern...@gmail.com on 7 Nov 2012 at 4:41

GoogleCodeExporter commented 8 years ago 
Hello,

I see a lot of dropped RX packets. Can you reach out to someone (a user group 
or forum) who knows Fedora to see how to resolve this?

Original comment by imooreya...@gmail.com on 7 Nov 2012 at 4:53

GoogleCodeExporter commented 8 years ago 
Thanks. I also noticed the same thing when posting this. I will post on some 
Fedora forums and see what comes up. Would you like me to update this issue 
when a solution is found?

Original comment by suthern...@gmail.com on 7 Nov 2012 at 4:55

GoogleCodeExporter commented 8 years ago 
Hello,

Yes, please. It may be useful for anyone else who sees the same problem in
the future.

Original comment by imooreya...@gmail.com on 7 Nov 2012 at 4:56

GoogleCodeExporter commented 8 years ago 
The BOND0 interface setup was incorrect. Basically it was set up as MODE=4. 
Once I set it to MODE=0, the dropped packet counter stopped incremental. As you 
can see from the above ifconfig dump, it wasn't really doing a load-sharing 
anyway.

Original comment by suthern...@gmail.com on 9 Nov 2012 at 8:26

GoogleCodeExporter commented 8 years ago

Original comment by imooreya...@gmail.com on 12 Nov 2012 at 12:30

GoogleCodeExporter commented 8 years ago 
Hello, I am having the same issue as the original problem.  I am running Ubuntu 
14.04 server, no GUI installed (all command line).

When viewing phpvirtualbox in browser, it shows fine, then the error message 
shows up
*****BEGIN ERROR MESSAGE*****
There was an error obtaining the list of registered virtual machines from 
VirtualBox. Make sure vboxwebsrv is running and that the settings in config.php 
are correct.

The list of virtual machines will not begin auto-refreshing again until this 
page is reloaded.

(General communication failure)
*****END ERROR MESSAGE*****

When refreshing it works again for 1-5 minutes then errors again.  Running 
ifconfig as root shows no dropped packets and no errors on any network 
interface.

Original comment by sunshine...@gmail.com on 4 Jun 2015 at 4:43