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RE: [Linux-cluster] RHEL 5.3: Joining fence domain hangs when selinux is enabled



That’s just it. There are no logs being generated in audit.log. I’m pretty well versed in creating custom SELInux policies.

 

I’ve reported on issues in the past where SELinux does not generate logs. It was a while ago and have since forgotten what the resolution was but I was fixed by the devs.. I’ll be more than happy to file a bug report.

 

Thx,

M

 

From: linux-cluster-bounces redhat com [mailto:linux-cluster-bounces redhat com] On Behalf Of Ian Hayes
Sent: Wednesday, August 12, 2009 1:26 PM
To: linux clustering
Subject: Re: [Linux-cluster] RHEL 5.3: Joining fence domain hangs when selinux is enabled

 

I'm assuming that you're running the Targeted policy and not the strict policy...

RHEL5 has a module for ccs, but I haven't taken it apart. The files for fencing may be incorrectly labeled or the policy doesn't allow fenced to run correctly.

Look at your /var/log/audit/audit.log files and see what's being denied. You may want to install sealert and setroubleshootd so you can browse the messages. First, check the file contexts of the files that are appearing in your audit logs.  Nothing should be default_t. If anything looks out of whack, try restoring the correct file contexts with restorecon and see if the file contexts have changed.  If you're feeling brave, you can start writing a custom policy module to permit fenced to start up.

The audit logs will tell you everything, and where you will need to start. I managed to knock out a policy for 389Server in about an hour, but I had the benefit of just coming back from Redhat's SELinux class.

On Wed, Aug 12, 2009 at 9:15 AM, de Jong, MarkJan <deJongm teoco com> wrote:

It seems that with selinux enabled, fencing hangs during ‘service cman start’.

 

When selinux is set to enforcing, the cman startup script hangs at “Starting fencing ….” and never times out.

There are NO logs related to the event in /var/log/audit/audit.log, nor anything telling in /var/log/messages. ‘fence_tool dump’ also does not provide any further details.

 

After setting selinux to permissive, fencing starts up without incident.

 

I’m using the following packages:

 

kernel-xen-2.6.18-128.4.1.el5

cman-2.0.98-1.el5_3.4

 

Let me know if I can provide any further info.

 

thanks,

Mark de Jong

 

 

 

 

 


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