[kwlug-disc] Problem reaching server

[CrankyOldBugger]

Ok, that was my mistake.  I'll do the auto br0 tonight.  Thanks for the
idea.


On Fri, 13 Mar 2015 at 05:47 Khalid Baheyeldin <kb at 2bits.com> wrote:

> On Thu, Mar 12, 2015 at 11:14 PM, CrankyOldBugger <
> crankyoldbugger at gmail.com> wrote:
>
>> That didn't seem to help.  I commented out all of the lines below
>> virbr0.  Now I can't reach the VMs either.
>>
>> By bridging, I assumed you mean virbr0, which we all worked so hard to
>> set up a few weeks ago.
>>
>
> No. It was not virbr0.
>
> It was:
>
> auto br0
> iface br0 inet dhcp
>   bridge_ports eth0
>
> Again, I am using libvirt with kvm underneath, not any other
> virtualization stack.
>
> I don't understand why I've been merrily rebooting since then but all of a
>> sudden it starts to fail.  Just weird.
>>
>
> In that case, it is a totally different problem. Mine never booted
> successfully. In your case, it seems intermittent.
>
>
>>
>> I'll fiddle with it some more tomorrow.
>>
>>
>> On Thu, 12 Mar 2015 at 19:05 Khalid Baheyeldin <kb at 2bits.com> wrote:
>>
>>> That happened to me when I had bridging on the physical host that has
>>> virtualization. Things work, until you reboot, then server is not reachable.
>>>
>>> I didn't figure out why, and ended up abandoning the bridge I added to
>>> /etc/network/interfaces, and using the default networking that is setup by
>>> libvirt.
>>>
>>> On Thu, Mar 12, 2015 at 6:51 PM, CrankyOldBugger <
>>> crankyoldbugger at gmail.com> wrote:
>>>
>>>> I'm puzzled...  I rebooted my Ubuntu server this morning (as updates
>>>> needed a reboot) and now I can't reach it.
>>>>
>>>> Here's what I determined:
>>>>
>>>> It was running fine before the reboot!
>>>> I can't ping the server from another machine on the same subnet.
>>>> I can't SSH to the server.
>>>> SSH is running on the server.
>>>> I can't telnet to the server
>>>> I can ssh from the server to itself, so ssh is running and listening on
>>>> 22.
>>>> If I try to ssh from another linux box on the same subnet, using either
>>>> hostname or IP, I get "No route to host".
>>>> Traceroute should only one hop, that being the client I started
>>>> traceroute from, but that line ends in !H, which I believe means can't
>>>> connect.
>>>> IP address is fine.
>>>> I can't ping out from the server.
>>>> Now here's the fun part: I have two virtual machines hosted on this
>>>> server, and they're both running fine.  I can connect to them and they can
>>>> connect to the internet.
>>>>
>>>> Not sure what to think at this point.  Anyone have any ideas?
>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>> --
>>> Khalid M. Baheyeldin
>>> 2bits.com, Inc.
>>> Fast Reliable Drupal
>>> Drupal optimization, development, customization and consulting.
>>> Simplicity is prerequisite for reliability. --  Edsger W.Dijkstra
>>> Simplicity is the ultimate sophistication. --   Leonardo da Vinci
>>> For every complex problem, there is an answer that is clear, simple, and
>>> wrong." -- H.L. Mencken
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>>
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>>
>>
>
>
> --
> Khalid M. Baheyeldin
> 2bits.com, Inc.
> Fast Reliable Drupal
> Drupal optimization, development, customization and consulting.
> Simplicity is prerequisite for reliability. --  Edsger W.Dijkstra
> Simplicity is the ultimate sophistication. --   Leonardo da Vinci
> For every complex problem, there is an answer that is clear, simple, and
> wrong." -- H.L. Mencken
>  _______________________________________________
> kwlug-disc mailing list
> kwlug-disc at kwlug.org
> http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>
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