The "[GRID HANDLER]: Exception System.NullReferenceException: Object reference not set to an instance of an object."
indicates some kind of unexpected failure when the grid service handles a request (possibly the call which asks for
details about the desired login region for the user). I changed the log message to give some more useful information
under Windows (namely, the stack trace).
Since it was short and easy, I also ported this to 0.7-post-fixes.
However, this failure and the login service failure probably stem from a deeper underlying cause, possibly the database.
It's not an issue I've seen before.
On 23/02/11 18:37, Fleep Tuque wrote:
OK in continuing to try to troubleshoot this, I realized I tried stopping and
starting both the ROBUST and opensim
services, but I did NOT try stopping and restarting the MySQL database service
itself.
When I did that, suddenly I could log in again...
So, still don't know what the error message I saw before means:
10:59:51 - [GRID HANDLER]: Exception System.NullReferenceException: Object refer
ence not set to an instance of an object.
But it seems as if somehow the ROBUST service lost (?) connection to the
database and .. maybe when it tried to query
for the user and got no response it interpreted as user not found even though
the issue actually was that it no longer
had a connection to the database?
I don't know, I'm pretty n00b at all this, but if restarting the MySQL database
resolved the issue then my next question
is why did it stop working in the first place and how do I prevent it from
happening again.
Thanks as always,
- Chris/Fleep
Chris M. Collins (SL: Fleep Tuque)
Project Manager, UC Second Life
Second Life Ambassador, Ohio Learning Network
UCit Instructional & Research Computing
University of Cincinnati
406E Zimmer Hall
PO Box 210088
Cincinnati, OH 45221-0088
(513)556-3018
[email protected] <mailto:[email protected]>
UC Second Life: http://homepages.uc.edu/secondlife
OLN Second Life: http://www.oln.org/emerging_technologies/emtech.php
On Wed, Feb 23, 2011 at 12:02 PM, Fleep Tuque <[email protected]
<mailto:[email protected]>> wrote:
Also, in case it's helpful, here's the console output when I successfully
logged in this morning:
*Successful login from internal IP looks like this on ROBUST:*
04:38:57 - [LLOGIN SERVICE]: Login request for Fleep Tuque from
10.24.146.106 wi
th user agent Imprudence 1.3.0 / Second Life 1.23.5.136262 starting in last
04:38:57 - [PASS AUTH]: got ; hashed = ; stored =
04:38:57 - [LLOGIN SERVICE]: 0 active gestures
04:38:57 - [PRESENCE SERVICE]: LoginAgent
3cc87096-b350-4ded-b7b3-26a19884e839 w
ith session c9112461-9b79-4e5f-b876-b71c70bd4083 and ssession
27e0f832-62ce-41b6
-96f7-70f621d3ef78
04:38:57 - [GRID USER SERVICE]: User 3cc87096-b350-4ded-b7b3-26a19884e839
is onl
ine
04:38:57 - [LLOGIN SERVICE]: FindDestination for start location last
04:38:57 - [REMOTE SIMULATION CONNECTOR]: Posted CreateAgent request to
remote s
im http://10.23.23.149:9000/agent/3cc87096-b350-4ded-b7b3-26a19884e839/,
region
University of Cincinnati, x=2304000 y=2304000
04:38:58 - [REMOTE SIMULATION CONNECTOR]: DoCreateChildAgentCall reply was
{"suc
cess":true,"your_ip":"10.23.23.148"}
04:38:58 - [LLOGIN SERVICE]: Retrieved 0 friends
04:38:58 - [LLOGIN]: Library has 19 folders
04:38:58 - [LLOGIN SERVICE]: All clear. Sending login response to client.
04:38:59 - [AVATAR SERVICE]: SetAvatar for
3cc87096-b350-4ded-b7b3-26a19884e839,
attachs=1
04:38:59 - [PRESENCE SERVICE]: ReportAgent with session
c9112461-9b79-4e5f-b876-
b71c70bd4083 in region 5985af1b-4223-4a12-ba87-1c3830a44e97
04:39:00 - [GRID SERVICE]: region University of Cincinnati has 0 neighours
04:39:33 - [PRESENCE SERVICE]: Session c9112461-9b79-4e5f-b876-b71c70bd4083
logo
ut
04:39:33 - [GRID USER SERVICE]: User 3cc87096-b350-4ded-b7b3-26a19884e839
is off
line
*Successful login from internal IP looks like this on OPENSIM:*
04:38:54 - [LOCAL SIMULATION CONNECTOR]: Found region University of
Cincinnati t
o send SendCreateChildAgent
04:38:54 - [CONNECTION BEGIN]: Region University of Cincinnati told of
incoming
root agent Fleep Tuque 3cc87096-b350-4ded-b7b3-26a19884e839 (circuit code
153707
9610, teleportflags 128)
04:38:54 - [CONNECTION BEGIN]: Region University of Cincinnati
authenticated and
authorized incoming root agent Fleep Tuque
3cc87096-b350-4ded-b7b3-26a19884e839
(circuit code 1537079610)
04:38:54 - [CAPS]: Registered seed capability
/CAPS/a0b03555-745c-4b59-9100-229c
526c32f50000/ for 3cc87096-b350-4ded-b7b3-26a19884e839
04:38:54 - [EVENTQUEUE]: Adding new queue for agent
3cc87096-b350-4ded-b7b3-26a1
9884e839 in region University of Cincinnati
04:38:54 - [OBJECTADD]: /CAPS/OA/9d6729c7-c198-4a4a-868b-ae80926a36fb/
04:38:54 - [GETTEXTURE]: /CAPS/19bff37d-59e8-4176-b50d-17f1bc0eea6f
04:38:55 - [CAPS]: Seed Caps Request in region: University of Cincinnati
04:38:55 - [SCENE]: Incoming client Fleep Tuque in region University of
Cincinna
ti via regular login. Client IP verification not performed.
04:38:56 - [LLUDPSERVER]: Handling UseCircuitCode packet from 10.24.146.106:5423
<http://10.24.146.106:5423>
9
04:38:56 - [SCENE]: Adding new agent Fleep Tuque to scene University of
Cincinna
ti
04:38:56 - [ACCOUNTS CONNECTOR]: GetUserAccount
3cc87096-b350-4ded-b7b3-26a19884
e839
04:38:56 - [USER CACHE]: cached user 3cc87096-b350-4ded-b7b3-26a19884e839
04:38:56 - [ATTACHMENTS MODULE]: Rezzing single attachment from item
2c3a10fc-a8
82-45a3-8a14-2332bc96edf9 for Fleep Tuque
04:38:56 - [XINVENTORY CONNECTOR]: GetItem
2c3a10fc-a882-45a3-8a14-2332bc96edf9
04:38:56 - [XINVENTORY CONNECTOR]: GetItem
2c3a10fc-a882-45a3-8a14-2332bc96edf9
04:38:56 - [SCENE]: Upgrading child to root agent for Fleep Tuque in
University
of Cincinnati
04:38:56 - [APPEARANCE]: UpdateDatabase
04:38:56 - [PRESENCE DETECTOR]: Detected root presence
3cc87096-b350-4ded-b7b3-2
6a19884e839 in University of Cincinnati
04:38:57 - [ACTIVITY DETECTOR]: Detected root presence
3cc87096-b350-4ded-b7b3-2
6a19884e839 in University of Cincinnati
04:38:57 - [ATTACHMENTS MODULE]: Updating inventory of Fleep Tuque to show
attac
hment of Test Object 1 (item ID 2c3a10fc-a882-45a3-8a14-2332bc96edf9)
04:38:57 - [XINVENTORY CONNECTOR]: GetItem
2c3a10fc-a882-45a3-8a14-2332bc96edf9
04:38:57 - [WORLD MAP]: Starting remote MapItem request thread
04:38:57 - [ATTACHMENT]: Rezzed attachment in point 2 from item
2c3a10fc-a882-45
a3-8a14-2332bc96edf9 and asset 00000000-0000-0000-0000-000000000000
(a907aee9-25
7f-4b47-a11e-ed6f054fe3c1)
04:38:57 - [SCENE]: Received request for wearables of Fleep Tuque
04:38:58 - [PHYSICS]: trying to change capsule size, but the following ODE
data
is missing - Shell Body Amotor
04:38:58 - [XINVENTORY CONNECTOR]: GetItem
2c3a10fc-a882-45a3-8a14-2332bc96edf9
04:38:58 - [WATCHDOG]: Started tracking thread "MapItemRequestThread" (ID
27)
04:38:58 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:38:58 - [CAPS]: Received baked texture
aff25517-16a9-47da-b11d-cacb4e0916b6
04:38:59 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:38:59 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:38:59 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:39:00 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:39:00 - [CAPS]: Received baked texture
532db0d5-53f4-4635-b6cd-b9d90b776d76
04:39:00 - [CAPS]: Received baked texture
9c5ba2b3-019e-4d3b-b413-2b0ff50b2268
04:39:00 - [CAPS]: Received baked texture
7e7d35d1-3280-41f3-889b-ce6811f1d647
04:39:01 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:39:01 - [CAPS]: Received baked texture
2d9e9051-80e5-4d3b-9452-6a318d6ffc18
04:39:01 - [CAPS]: Received baked texture
b7035f7b-6cf8-4da1-882b-bac89d391648
04:39:01 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:39:01 - [CAPS]: UploadBakedTexture Request in region: University of
Cincinnat
i
04:39:02 - [CAPS]: Received baked texture
9f27db59-f8bc-4bc4-9017-b2ea900df6b1
04:39:02 - [CAPS]: Received baked texture
b44ae4f1-a839-4086-af02-eecb5004a9f5
04:39:30 - [CLIENT]: Got a logout request for Fleep Tuque in University of
Cinci
nnati
04:39:30 - [CLIENT]: Close has been called for Fleep Tuque attached to
scene Uni
versity of Cincinnati
04:39:30 - [PRESENCE DETECTOR]: Detected client logout
3cc87096-b350-4ded-b7b3-2
6a19884e839 in University of Cincinnati
04:39:30 - [ACTIVITY DETECTOR]: Detected client logout
3cc87096-b350-4ded-b7b3-2
6a19884e839 in University of Cincinnati
04:39:30 - [SCENE]: Removing root agent
3cc87096-b350-4ded-b7b3-26a19884e839 fro
m region University of Cincinnati
04:39:30 - [EVENTQUEUE]: Closed client 3cc87096-b350-4ded-b7b3-26a19884e839
in r
egion University of Cincinnati
As far as I know nothing changed between then and my next login attempt a
few hours later when ROBUST reported:
10:59:51 - [GRID HANDLER]: Exception System.NullReferenceException: Object
refer
ence not set to an instance of an object.
11:01:33 - [LLOGIN SERVICE]: Login request for Fleep Tuque from
10.24.146.106 wi
th user agent Imprudence 1.3.0 / Second Life 1.23.5.136262 starting in last
11:01:33 - [LLOGIN SERVICE]: Login failed, reason: user not found
Thanks again for any thoughts..
- Chris/Fleep
Chris M. Collins (SL: Fleep Tuque)
Project Manager, UC Second Life
Second Life Ambassador, Ohio Learning Network
UCit Instructional & Research Computing
University of Cincinnati
406E Zimmer Hall
PO Box 210088
Cincinnati, OH 45221-0088
(513)556-3018
[email protected] <mailto:[email protected]>
UC Second Life: http://homepages.uc.edu/secondlife
OLN Second Life: http://www.oln.org/emerging_technologies/emtech.php
On Wed, Feb 23, 2011 at 11:52 AM, Fleep Tuque <[email protected]
<mailto:[email protected]>> wrote:
Hi all,
I'm attempting to get 0.7.0.2 running in grid mode on our campus
Win2008 servers and I can't figure out for the
life of me what's wrong.
I've got FleepGrid running 0.7.0.2 on WinXP in grid mode at home, the
only other difference is that FleepGrid is
all on a single physical machine, and the campus grid is running on two
separate virtual machines. This is the
first time I've tried setting up a grid where the grid services are on
a different (virtual) machine than the
simulators. At the moment, I am just trying to get everything working
properly on the university's internal
network.
This morning when I first installed everything, it seemed to go fine. I
successfully created a user "Fleep
Tuque" through ROBUST console. I added the first region "University of
Cincinnati" to the region.ini file. I
logged in. All seemed well. I rezzed a prim, stored in inventory,
attached to head to test attachment points.
Still good, I see everything coming through on the console. I upload
an OAR file with our campus build in
progress, still all good - everything seems to load properly, it looks
right in-world. I'm thinking yay, all
good at least on the internal network.
I go away for a few hours. Come back, create some new accounts on the
ROBUST console to get my staff all set
up, and then try to login myself and get this on the ROBUST console:
10:59:51 - [GRID HANDLER]: Exception System.NullReferenceException:
Object refer
ence not set to an instance of an object.
11:01:33 - [LLOGIN SERVICE]: Login request for Fleep Tuque from
10.24.146.106 wi
th user agent Imprudence 1.3.0 / Second Life 1.23.5.136262 starting in
last
11:01:33 - [LLOGIN SERVICE]: Login failed, reason: user not found
Things I've tried so far:
1. Shutting down opensim and ROBUST and restarting. No love.
2. Double checking the database connection string in PRIM STORAGE
section opensim.ini
storage_plugin="OpenSim.Data.MySQL.dll"
storage_connection_string="Data
Source=10.23.23.148;Database=opensim;User ID=opensim;Password=MYPASSWORD;"
3. Changing the URLs in gridcommon.ini to IP addresses instead of FQDN
(one example, they all say the same thing):
WAS
[UserAccountService]
;
; change this to your grid-wide user accounts server
;
UserAccountServerURI = "http://ucsim.uc.edu:8003";
NOW
[UserAccountService]
;
; change this to your grid-wide user accounts server
;
UserAccountServerURI = "http://10.23.23.148:8003"; <--- Machine
where ROBUST and MySQL are running
Still no luck. So my questions are:
1. What does this error mean: 11:24:24 - [GRID HANDLER]: Exception
System.NullReferenceException: Object refer
ence not set to an instance of an object.
2. Why is ROBUST not seeing that the user exists in the database?
3. Why was I successfully able to login initially but not now? What
changed? (That is, I'm pretty sure I
didn't change anything between my last successful login and my first
unsuccessful login.)
Any help much appreciated!
Sincerely,
- Chris/Fleep
Chris M. Collins (SL: Fleep Tuque)
Project Manager, UC Second Life
Second Life Ambassador, Ohio Learning Network
UCit Instructional & Research Computing
University of Cincinnati
406E Zimmer Hall
PO Box 210088
Cincinnati, OH 45221-0088
(513)556-3018
[email protected] <mailto:[email protected]>
UC Second Life: http://homepages.uc.edu/secondlife
OLN Second Life: http://www.oln.org/emerging_technologies/emtech.php
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Justin Clark-Casey (justincc)
http://justincc.org/blog
http://twitter.com/justincc
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