Networking keeps stopping
Homer
fsunoles at gmail.com
Wed Apr 27 22:18:44 UTC 2011
On Wed, Apr 27, 2011 at 2:48 PM, Jonathan M. Prigot <jprigot at verizon.net> wrote:
> Yup. The usual entries are for NAMESERVER, DOMAIN, and optionally
> SEARCH. As to Ubuntu not using it anymore, you've seen what happens if
> that information is not there. As to where the contents of resolv.conf
> has gone (3 times), that's the mystery we are trying to solve, isn't it?
Four times now. Uggg. Heading home in a sec, so will have to pick it
up tomorrow. Thank you for the comments/insight on this.
> On Wed, 2011-04-27 at 14:35 -0600, Homer wrote:
>> On Wed, Apr 27, 2011 at 11:31 AM, Jonathan M. Prigot
>> <jprigot at verizon.net> wrote:
>> > Well KNetworkManager is just the front end to NetworkManager. I've
>> > always "apt-get removed" on my systems that need full manual control of
>> > the network.
>>
>> I'll consider doing that. I was just reviewing your previous
>> responses. Is it correct to say that resolv.conf should contain the
>> dns and domain information? I thought I had read way back that ubuntu
>> no longer used that file. If it should be populated with that info,
>> then it is curious that it has been deleted three times. We know I
>> don't have DHCP running, so what else would delete the contents of
>> that file?
>>
>>
>> > On Wed, 2011-04-27 at 11:24 -0600, Homer wrote:
>> >> On Wed, Apr 27, 2011 at 10:52 AM, Jonathan M. Prigot
>> >> <jprigot at verizon.net> wrote:
>> >> > Best indication would be "ps -ef|grep dh". If anything but your "grep"
>> >> > command comes up, then you are running a DHCP client. Not sure if this
>> >> > applies, but NetworkManager often sneaks this.
>> >>
>> >> No DHCP is running. I took a look at Network Connections under System
>> >> Settings. Nothing is configured there. What about KNetworkManager?
>> >> "ps -ef|grep net" indicates it is running. Is that something I can
>> >> configure? If I select it from the K menu, nothing happens.
>> >>
>> >>
>> >>
>> >>
>> >> > On Wed, 2011-04-27 at 10:38 -0600, Homer wrote:
>> >> >> On Wed, Apr 27, 2011 at 10:23 AM, Jonathan M. Prigot
>> >> >> <jprigot at verizon.net> wrote:
>> >> >> > My guess is that you are using DHCP on your network. The DHCP server is
>> >> >> > responsible for supplying the entries in /etc/resolv.conf. Someone at
>> >> >> > the server end probably deleted those entries. As you see, you can
>> >> >> > manually edit the /etc/resolv.conf file, but when the DHCP client on
>> >> >> > your machine refreshes, they disappear.
>> >> >>
>> >> >> Good guess, but my machine has always had a static IP. We are moving
>> >> >> to DHCP here, but I've been a hold out for a number of reasons. Might
>> >> >> I have DHCP running on my machine I don't know about? I always
>> >> >> configure my network info by editing the /etc/network/interfaces file,
>> >> >> and that has always worked.
>> >> >>
>> >> >>
>> >> >>
>> >> >> > On Wed, 2011-04-27 at 10:07 -0600, Homer wrote:
>> >> >> >> Kubuntu 10.04
>> >> >> >>
>> >> >> >> Yesterday the networking on my machine stopped working. I figured it
>> >> >> >> was something in the building as I didn't make any changes on my
>> >> >> >> computer that preceded the stoppage. Ultimately the IT folks here
>> >> >> >> concluded the problem was I didn't have any entries in my
>> >> >> >> /etc/resolv.conf file. They added the nameservers and dns-search,
>> >> >> >> which got things going, and my machine was declared fixed. I was
>> >> >> >> dubious.
>> >> >> >>
>> >> >> >> This morning networking stopped again. A quick check of the
>> >> >> >> resolv.conf file showed it again to be empty. I made the changes and
>> >> >> >> restarted networking and was off again. Then it stopped again 30
>> >> >> >> minutes later. resolv.conf was again empty. I repeated the above
>> >> >> >> steps, and am posting here before it quits again.
>> >> >> >>
>> >> >> >> Anyone have any idea what is really going on? I'm stumped, but that's
>> >> >> >> not hard to do. I updated my machine the day prior to the first
>> >> >> >> stoppage. No other OS fiddling.
>> >> >> >>
>> >> >> >
>> >> >> >
>> >> >> > --
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>> >> >
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