[HTCondor-users] Problem with submiting Condor jobs from a php script

[Sorina Camarasu Pop <sorina.pop@xxxxxxxxxxxxxxxxxxxx>]

Dear Condor users,

I'm new to Condor and I encounter a problem when trying to submit Condor 
jobs from a php script.
I did create a condor user and tested my configuration by launching jobs 
(with condor_submit) both as condor and apache. Everything goes fine 
when using command line tools (and shell scripts) in my Linux console. 
However, when trying to execute condor_submit (or a script calling 
condor_submit) from a very simple PHP script, I get the following error 
message (in the SchedLog file) :
3/03/14 18:09:56 authenticate_self_gss: acquiring self credentials 
failed. Please check your Condor configuration file if this is a server 
process. Or the user environment variable if this is a user process.
GSS Major Status: General failure
GSS Minor Status Error Chain:
globus_gsi_gssapi: Error with GSI credential
globus_gsi_gssapi: Error with gss credential handle
globus_credential: Valid credentials could not be found in any of the 
possible locations specified by the credential search order.
Valid credentials could not be found in any of the possible locations 
specified by the credential search order.
Attempt 1
globus_credential: Error reading host credential
globus_sysconfig: Could not find a valid certificate file: The host cert 
could not be found in:
1) env. var. X509_USER_CERT
2) /etc/grid-security/hostcert.pem
3) $GLOBUS_LOCATION/etc/hostcert.pem
4) $HOME/.globus/hostcert.pem

The host key could not be found in:
1) env. var. X509_USER_KEY
2) /etc/grid-security/hostkey.pem
3) $GLOBUS_LOCATION/etc/hostkey.pem
4) $HOME/.globus/hostkey.pem

Attempt 2
globus_credential: Error reading proxy credential
globus_sysconfig: Could not find a valid proxy certificate file location
globus_sysconfig: Error with key filename
globus_sysconfig: File does not exist: /tmp/x509up_u0 is not a valid file
Attempt 3
globus_credential: Error reading user credential
globus_sysconfig: Error with certificate filename: The user cert could 
not be found in:
1) env. var. X509_USER_CERT
2) $HOME/.globus/usercert.pem
3) $HOME/.globus/usercred.p12

03/03/14 18:09:56 DC_AUTHENTICATE: authentication of 
<xxx.xxx.xxx.xxx:57170> did not result in a valid mapped user name, 
which is required for this command (1112 QMGMT_WRITE_CMD), so aborting.
03/03/14 18:09:56 DC_AUTHENTICATE: reason for authentication failure: 
AUTHENTICATE:ë:Failed to authenticate with any 
method|AUTHENTICATE:ì:Failed to authenticate using GSI|GSI::Failed to 
authenticate.  Globus is reporting error (851968:550).  There is 
probably a problem with your credentials.  (Did you run 
grid-proxy-init?)|AUTHENTICATE:ì:Failed to authenticate using 
KERBEROS|AUTHENTICATE:ì:Failed to authenticate using FS|FS:ì:Unable to 
lstat(/tmp/FS_XXXVpwC9j)


According to posts that I could find on the internet, I enabled FS 
authentication, which resulted in the following error message :
03/04/14 17:58:22 DC_AUTHENTICATE: authentication of 
<xxx.xxx.xxx.xxx:54086> did not result in a valid mapped user name, 
which is required for this command (1112 QMGMT_WRITE_CMD), so aborting.
03/04/14 17:58:22 DC_AUTHENTICATE: reason for authentication failure: 
AUTHENTICATE:ë:Failed to authenticate with any 
method|AUTHENTICATE:ì:Failed to authenticate using FS|FS:ì:Unable to 
lstat(/tmp/FS_XXXwonH1Q)

I also tried to enable password authentication, but did not manage to 
configure it properly, which resulted in being unable to submit any jobs 
at all.
Finally, I also tried to play with the SHADOW_ALLOW_UNSAFE_REMOTE_EXEC 
option, which seems to allow shell calls via the libc 'system()' 
function. I set it to true, but I got an error from the shallow daemon 
saying "Assertion ERROR on (job_ad_file)" at line 166 in file 
shadow_v61_main.cpp" . Nevertheless, I do manage to submit jobs using 
the execl command in a simple C executable.
I shoudl have probably started by saying that I use the same machine 
(Fedora 18 virtual machine configured as a dual core) for my condor 
submit, condor manager, and condor execute nodes.  I use Condor version 
7.9.1, installed using yum. I had previously compiled it from sources, 
but had some library problems preventing me from launching jobs.
Do you have any advice on how I could solve this problem ?
Is there any special configuration for Condor to work with PHP 
applications ?
Best regards,
Sorina