[LON-CAPA-admin] Access Server Problems

Tue Oct 28 10:49:11 EDT 2008

Mark,

Thanks for the ideas.  Totally clean start.  For better or worse, our
server guys are experimenting with VMs running on top of VMWare's ESXi
hypervisor, and they've started the LON-CAPA experiment with this access
server.  As far as I know, that extra layer shouldn't cause this type of
problem, though.

Once upon a time I had attempted the security certificate setup, and
should likely do that again, but as of right now my servers allow both
secure and insecure inter-server communications.

Todd

Mark Lucas wrote:
> Todd,
> 
> from a non-guru, did you rebuild totally from scratch, or did you
> restore parts of the /home/httpd directory? (I always start access
> servers totally fresh). Did you change machines underneath?
> 
> I've confirmed that I can log in, access resources on oucapa2, but not
> under the csm domain. Do you have security certificates set up that
> might have caused grief?
> 
> Mark
> 
> 
> On Mon, 2008-10-27 at 23:45 -0600, Todd Ruskell wrote:
>> So, this is a strange one for me.  I'd appreciate any advice.
>>
>> We just rebuilt an access server, lc1.mines.edu (csma1) with centOS 5. 
>> As far as I can tell, no errors on install, no missing dependencies. 
>> loncontrol and httpd start just fine.  I *think* that ports 80, 8080, 
>> and 5663 should all be open on both machines.  Our other access server, 
>> csma2 still works fine.
>>
>> Problem is, my library server can't find csma1.  I'm also pretty sure 
>> that csma1 can't find the library server, either.  I've included 
>> relevant output from the access server logs, below, for a representative 
>> attempt to log in with a kerberos account.  I can't log in with an 
>> internally authenticated account, either.  I don't get anything on the 
>> library server logs.
>>
>> Whenever I attempt to log in, I get "Username and/or password could not 
>> be authenticated" from my browser.
>>
>> Now, the funny thing is that csma1 is also in spare.tab, and as soon as 
>> it came back online it started accepting logins from binghamton (I 
>> included a couple lines in lonnet.log to show this), including 
>> authorization.  So csma1 will, in fact, talk to some members of the 
>> network in some fashion.  Now, I also got a *lot* of "Userfile repcopy 
>> failed" messages appearing in lonnet.log.  Perhaps that means that I 
>> don't have full communication?
>>
>> But, /home/httpd/html/res is populated by resources, presumably from the 
>> chemistry courses the binghamton users were attempting to access.
>>
>> I patiently await the word of the almighty gurus.
>>
>> Thanks,
>>
>> Todd
>>
>>
>> lonc.log:
>> Mon Oct 27 22:58:09 2008 (26966) [loncapa.Mines.EDU] [Mon Oct 27 
>> 22:29:21 2008: loncapa.Mines.EDU Connection count: 0 Retries remaining: 
>> 5 ()] <font color='red'>CRITICAL: Failed to make a connection with 
>> lond.</font>
>> Mon Oct 27 22:58:09 2008 (26966) [loncapa.Mines.EDU] [Mon Oct 27 
>> 22:29:21 2008: loncapa.Mines.EDU Connection count: 0 Retries remaining: 
>> 5 ()] <font color='blue'>WARNING: Failing transaction sethost</font>
>> Mon Oct 27 22:58:12 2008 (26966) [loncapa.Mines.EDU] [Mon Oct 27 
>> 22:29:21 2008: loncapa.Mines.EDU Connection count: 0 Retries remaining: 
>> 5 ()] <font color='red'>CRITICAL: Failed to make a connection with 
>> lond.</font>
>> Mon Oct 27 22:58:16 2008 (26966) [loncapa.Mines.EDU] [Mon Oct 27 
>> 22:58:12 2008: loncapa.Mines.EDU Connection count: 0 Retries remaining: 
>> 5 ()] <font color='red'>CRITICAL: Failed to make a connection with 
>> lond.</font>
>> Mon Oct 27 22:58:16 2008 (26966) [loncapa.Mines.EDU] [Mon Oct 27 
>> 22:58:12 2008: loncapa.Mines.EDU Connection count: 0 Retries remaining: 
>> 5 ()] <font color='blue'>WARNING: Failing transaction sethost</font>
>>
>> lonhttpd.log:
>> 138.67.129.10 - - [27/Oct/2008:22:58:17 +0000] "GET 
>> /adm/lonInterFace/student.jpg HTTP/1.1" 200 32041 
>> "http://lc1.mines.edu/adm/authenticate" "
>> Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.17) Gecko/20080924 
>> Ubuntu/8.04 (hardy) Firefox/2.0.0.17"
>>
>> lonnet.log
>> Mon Oct 27 14:51:58 2008 (5160): Userfile repcopy failed for 
>> uploaded/binghamton/1A2474087a384482fbinghamtonl1/group_allfolders.sequence.meta
>> Mon Oct 27 19:34:26 2008 (27182): User xu7418 at binghamton authorized 
>> by binghamtonl1
>> Mon Oct 27 22:58:12 2008 (10233): Trying to reconnect lonc
>> Mon Oct 27 22:58:12 2008 (10233): lonc at pid 26832 responding, sending USR1
>> Mon Oct 27 22:58:16 2008 (10233): User truskell at csm is unknown in 
>> authenticate
>>
>>
> 
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-- 
Dr. Todd Ruskell
Senior Lecturer, Department of Physics       Office:  Meyer Hall 326
Colorado School of Mines                     Phone: 303-384-2080
1523 Illinois Street                         Fax: 303-273-3919
Golden, CO 80401