Cobbler will not start on RHEL 6.3 with SELINUX set to enforcing. The traceback is:

[root@fiat Desktop]# service cobblerd restart

Stopping cobbler daemon: [ OK ]

Starting cobbler daemon: Traceback (most recent call last):

File "/usr/bin/cobblerd", line 76, in main

api = cobbler_api.BootAPI(is_cobblerd=True)

File "/usr/lib/python2.6/site-packages/cobbler/api.py", line 127, in __init__

module_loader.load_modules()

File "/usr/lib/python2.6/site-packages/cobbler/module_loader.py", line 62, in load_modules

blip = __import__("modules.%s" % ( modname), globals(), locals(), [modname])

File "/usr/lib/python2.6/site-packages/cobbler/modules/authn_pam.py", line 53, in <module>

from ctypes import CDLL, POINTER, Structure, CFUNCTYPE, cast, pointer, sizeof

File "/usr/lib64/python2.6/ctypes/__init__.py", line 546, in <module>

CFUNCTYPE(c_int)(lambda: None)

MemoryError

[ OK ]

SETROUBLESHOOT shows:

SELinux is preventing /usr/bin/python from 'execute' accesses on the file /var/tmp/ffi9tKgC2 (deleted).

***** Plugin catchall (100. confidence) suggests ***************************

If you believe that python should be allowed execute access on the ffi9tKgC2 (deleted) file by default.

Then you should report this as a bug.

You can generate a local policy module to allow this access.

allow this access for now by executing:

# grep cobblerd /var/log/audit/audit.log | audit2allow -M mypol

# semodule -i mypol.pp

Additional Information:

Source Context unconfined_u:system_r:cobblerd_t:s0

Target Context unconfined_u:object_r:cobbler_tmp_t:s0

Target Objects /var/tmp/ffi9tKgC2 (deleted) [ file ]

Source cobblerd

Source Path /usr/bin/python

Port <Unknown>

Host (removed)

Source RPM Packages python-2.6.6-29.el6_2.2.x86_64

Target RPM Packages

Policy RPM selinux-policy-3.7.19-155.el6_3.noarch

Selinux Enabled True

Policy Type targeted

Enforcing Mode Enforcing

Host Name (removed)

Platform Linux fiat 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13

18:24:36 EDT 2012 x86_64 x86_64

Alert Count 2

First Seen Mon 25 Jun 2012 09:17:11 AM EDT

Last Seen Mon 25 Jun 2012 09:17:11 AM EDT

Local ID 0e7281c6-bac9-4508-86f0-37bcd3b981f3

Raw Audit Messages

type=AVC msg=audit(1340630231.422:38857): avc: denied { execute } for pid=3237 comm="cobblerd" path=2F7661722F746D702F66666939744B674332202864656C6574656429 dev=dm-0 ino=1443260 scontext=unconfined_u:system_r:cobblerd_t:s0 tcontext=unconfined_u:object_r:cobbler_tmp_t:s0 tclass=file

type=SYSCALL msg=audit(1340630231.422:38857): arch=x86_64 syscall=mmap success=no exit=EACCES a0=0 a1=1000 a2=5 a3=1 items=0 ppid=3236 pid=3237 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm=cobblerd exe=/usr/bin/python subj=unconfined_u:system_r:cobblerd_t:s0 key=(null)

Hash: cobblerd,cobblerd_t,cobbler_tmp_t,file,execute

audit2allow

#============= cobblerd_t ==============

allow cobblerd_t cobbler_tmp_t:file execute;

audit2allow -R

#============= cobblerd_t ==============

allow cobblerd_t cobbler_tmp_t:file execute;

and

SELinux is preventing /usr/bin/python from 'search' accesses on the directory /dev/shm/ffiJ5MZtf.

***** Plugin restorecon (99.5 confidence) suggests *************************

If you want to fix the label.

/dev/shm/ffiJ5MZtf default label should be device_t.

Then you can run restorecon.

# /sbin/restorecon -v /dev/shm/ffiJ5MZtf

***** Plugin catchall (1.49 confidence) suggests ***************************

If you believe that python should be allowed search access on the ffiJ5MZtf directory by default.

Then you should report this as a bug.

You can generate a local policy module to allow this access.

allow this access for now by executing:

# grep cobblerd /var/log/audit/audit.log | audit2allow -M mypol

# semodule -i mypol.pp

Additional Information:

Source Context unconfined_u:system_r:cobblerd_t:s0

Target Context system_u:object_r:tmpfs_t:s0

Target Objects /dev/shm/ffiJ5MZtf [ dir ]

Source cobblerd

Source Path /usr/bin/python

Port <Unknown>

Host (removed)

Source RPM Packages python-2.6.6-29.el6_2.2.x86_64

Target RPM Packages

Policy RPM selinux-policy-3.7.19-155.el6_3.noarch

Selinux Enabled True

Policy Type targeted

Enforcing Mode Enforcing

Host Name (removed)

Platform Linux (removed) 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13

18:24:36 EDT 2012 x86_64 x86_64

Alert Count 1

First Seen Mon 25 Jun 2012 09:17:11 AM EDT

Last Seen Mon 25 Jun 2012 09:17:11 AM EDT

Local ID 69c30a55-bcf2-4d0e-b97e-acbc91c0e3b7

Raw Audit Messages

type=AVC msg=audit(1340630231.422:38858): avc: denied { search } for pid=3237 comm="cobblerd" name="/" dev=tmpfs ino=5440 scontext=unconfined_u:system_r:cobblerd_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=dir

type=SYSCALL msg=audit(1340630231.422:38858): arch=x86_64 syscall=open success=no exit=EACCES a0=7fff4eaa8310 a1=c2 a2=180 a3=1 items=4 ppid=3236 pid=3237 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm=cobblerd exe=/usr/bin/python subj=unconfined_u:system_r:cobblerd_t:s0 key=(null)

type=CWD msg=audit(1340630231.422:38858): cwd=/

type=PATH msg=audit(1340630231.422:38858): item=0 name=/dev/shm/ffiJ5MZtf

type=PATH msg=audit(1340630231.422:38858): item=1 name=(null) inode=5440 dev=00:10 mode=041777 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:tmpfs_t:s0

type=PATH msg=audit(1340630231.422:38858): item=2 name=/dev/shm/ffiJ5MZtf

type=PATH msg=audit(1340630231.422:38858): item=3 name=(null) inode=5440 dev=00:10 mode=041777 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:tmpfs_t:s0

Hash: cobblerd,cobblerd_t,tmpfs_t,dir,search

audit2allow

#============= cobblerd_t ==============

allow cobblerd_t tmpfs_t:dir search;

audit2allow -R

#============= cobblerd_t ==============

allow cobblerd_t tmpfs_t:dir search;

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Stuart J. Newman
Engineer 4; Systems

Solar Dynamics Observatory (SDO)

Honeywell Technology Solutions Inc

NASA/Goddard Space Flight Center

Building 14, Room E222

Mail Stop 428.2

Greenbelt, MD 20771

Office: (301) 286-5145

EMail: Stuart.J.Newman@nasa.gov

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