[luau] Road Runner

[Mark Kellman]

Thank you all very much.  Only one clarification regarding internet on 
demand:
Actually, I'm not picky.  Right now, as I'm sure everyone has determined, I 
just want it to work to download the required Oracle files so I can 
configure Oracle.  As I said, I'm then pulling it off to set it up securely 
as described by CERT (if you haven't gone to this site, I recommend a look.  
Any others out there better?):

http://www.cert.org/security-improvement/#modules

After I configure the server to be secure, then I'm going to plug it back 
into the internet at which time I will want the internet running full-time 
(I didn't even know I could turn it on/off...sounds like a cool choice 
though!).  I'll probably use a router/hub to share the bandwidth (possible?) 
and files with my, dare to say it, Windows desktop.  Reason: I am in Oracle 
DBA training.  More companies are swiching to Linux (not that I need to tell 
you guys) to save money. With the economy the way it is, more will continue 
to follow suit.  I'm hoping to get a leg up on the DBA's who only know MS 
W2K Server, which is why I will be the strongest proponent of Linux.

Now, I'll be working on Ray's suggestions.  No offense to eveyone else, but 
he's the expert that got me up to this point.  But, please continue to offer 
suggestions as I think it benefits the whole group.  Oracle runs in most 
every large shop out there.  Oracle runs on RH and due to the development 
costs vs. ROI, I don't think they'll be moving to other Linux platforms 
soon.

>From: Ray Strode <halfline at hawaii.rr.com>
>Reply-To: luau at videl.ics.hawaii.edu
>To: luau at videl.ics.hawaii.edu
>Subject: Re: [luau] Road Runner
>Date: Sun, 24 Mar 2002 02:11:54 -1000
>
>>
>>
>>
>>1.  The kernel is compiled with networking support and recognizes the 
>>Intel PRO/1000 Ethernet card.  Warren, I doubt a new kernel is needed. You 
>>mentioned there was a problem with the EEPro100.  This is >>an 
>>EtherExpress card.  I do not believe the problem you remember applies 
>>here, unless an Intel PRO/1000 is the same as an EtherExpress Pro100, 
>>which I doubt.
>>
>I'm not certain, by I think it's atleast plausible that they use the same 
>driver.  Remember it's a gigabit card, but it's only being pushed >to 
>10Mb/s. Chances are at least for that much functionality the same >driver 
>would work (and is probably being autoloaded).
>
>>But I am not against upgrading to the latest kernel.  Ijust do not 
>> >>believe it is necessary in this case.  Mark, I do recommend you 
>> >>install a kernel version that Oracle has tested with.
>>
>I agree with you.
>
>>2.  DHCP is installed.  It must be, since running it resulted in an error 
>>message about it being running already.  More about this later.
>>
>Yes that and the fact that his routing table shows him having a gateway and 
>ifconfig shows him having an IP address :-).  And so when >he goes  ls 
>/sbin/dhcpcd   it's there :-)
>
>>As I see it, there are potentially two problems.  First, DHCP does not 
>>seem to be running after bootup.
>>
>That's not a problem.  That's a choice.. He only wants it to give him 
>internet on demand (when he plugs the cable modem into the already >running 
>box).
>>Second, as Patrick suggested, there might be a hardware problem.
>>
>No.. It gets an IP address and Gateway.
>
>>Assuming the problem is _not_ with hardware, we still need to figure out 
>>why DHCP is not running, or was killed.
>>
>It is running.
>
>>Unfortunately, I am not a RedHat user, so I have no idea how RedHat
>>implemented their network configuration.  So if Warren and Ray could 
>> >>help me out, I have a few questions.
>>
>Okay, I can prolly help ya.
>
>>Anyway, this is how Debian configures the network.  How does RedHat
>>configure the interface for DHCP?
>>
>/etc/sysconfig/network-scripts/ifcfg-eth0
>sets some environment variables that /etc/init.d/network
>script uses to know what to do.
>
>>Ray, I think it is better to determine why RedHat is not running DHCP 
>> >>automatically, rather than running  /sbin/dhcpcd.
>>
>He doesn't wan't it to run automatically.  He wants it to run on demand. 
>You are right though.  It's better to use  /etc/init.d/network
>then /sbin/dhcpcd and friends
>
>>Since we are talking about RR, there is no reason to manually startup 
>> >>the network.
>>
>Yes there is.  He normally keeps his cable modem plugged into his other 
>computer.
>
>>1.  Mark, you need to login as root from your KDE environment to run all 
>>of the commands that everyone is asking you to run.  The >>reason you got 
>>an error when you typed 'ifconfig' was because you >>were not root.  Ray, 
>>Warren, correct me if I am wrong, but doesn't RedHat include /sbin  in the 
>>path when you are logged in as root?
>>
>It does, but depending on how super user priveleges are gained, the
>exisiting environment may be inherited, so the path and such may be still 
>set to the previous user.
>
>>Another benefit of using a terminal application instead of Ctrl-Alt-F7 is 
>>that you can copy and paste the output of those >>programs into an editor. 
>>The terminal app usually has a scroll bar, >>so if the output scrolls off 
>>the window, just move the scroll bar up >>and copy the text.
>>
>That's true (except Ctrl-Alt-F7 normally goes back to X, not to a console)
>
>>2.  The dmesg output suggests that the kernel already recognized the 
>>Ethernet card.  This means the device driver was compiled into >>the 
>>kernel. So there is no need to worry about loadable modules.  If >>no one 
>>knows what this is, it doesn't matter.  It is not important.
>>
>hrmmmm........interesting.....I never even thought of that. Actually, 
> >dmesg output isn't strictly boot messages is it?  I mean it updates 
> >itself whenever the kernel ring buffers are written too, yes? (I'm not 
> >sure) .  If you notice the ethernet card driver loading is the >absolute 
>last thing on the list. That suggests to me that it may have >happened 
>sometime after bootup. (Like when the module was loaded after >dhcpcd was 
>ran).
>
>>3.  Concerning the contents of the /etc/resolv.conf file.  I think having 
>>only one IP address listed is a mistake.  I had problems where >>the first 
>>DNS server on the list was down.  If there was no backup, I >>would have 
>>been locked out of the Internet.  The fact that there is >>only one entry 
>>could mean something went wrong.  If one entry is >>correct, I think RR 
>>mis-configured their system.  Someone should >>phone them up and complain.
>>
>Well one nameserver is good enough to get things working temporarily is all 
>I meant.   Road Runner has quite a few nameservers actually.
>
>>4.  Concerning re-installing DHCP, I only suggested this as a quick fix. 
>>We could try to figure out what went wrong with DHCP.  But it >>would be a 
>>lot easier to just uninstall the program, then install it >>again and go 
>>through the configuration procedure.
>>
>I could be wrong, but in this case I dont' think that would help at all.
>
>--Ray


_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.